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Nizoral (Ketoconazole)
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Nizoral

Nizoral is an extra-class medicine which is taken in treatment of infections such as throat yeast infections, vaginal yeast infections, fungal infections, esophagus. Nizoral is a helpful for patients with Cushing's syndrome, hair growth, prostate cancer, eumycetoma, tinea versicolor, leishmaniasis, high blood levels of calcium. Nizoral acts as an anti-fungal drug.

Other names for this medication:

Similar Products:
Grifulvin, Lamisil, Sporanox, Grifulvin V, Diflucan, Fluconazole, Sporanox PulsePak, Onmel, Amphocin, Voriconazole, Abelcet, Fungizone, Vfend, Onmel, Abelcet

 

Also known as:  Ketoconazole.

Description

Nizoral is developed with a help of medical professionals to fight with infections (throat yeast infections, vaginal yeast infections, fungal infections, esophagus), Cushing's syndrome, women hair growth, prostate cancer, eumycetoma, tinea versicolor, leishmaniasis, high blood levels of calcium. Target of Nizoral is to control, ward off, reduce and terminate fungi growth.

Nizoral acts as an anti-fungal drug. Nizoral operates by reducing fungi growth spreads by infection.

Nizoral is also known as Ketoconazole, Fung.

Nizoral is imidazole.

Dosage

You should take it by mouth with full glass of water.

Take Nizoral once a day at the same time.

If you want to achieve most effective results do not stop taking Nizoral suddenly.

Overdose

If you overdose Nizoral and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Generic Nizoral overdosage: feeling lightheaded, diarrhea, migraine, abnormal pain, ears ringing, nausea, rething.

Storage

Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F) away from moisture and heat. Keep container tightly closed. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Nizoral are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.

Contraindications

Do not take Nizoral if you are allergic to Nizoral components.

Do not take Nizoral if you are pregnant, planning to become pregnant, or are breast-feeding.

Do not use Nizoral if you take astemizole (Hismanal), cisapride (Propulsid), midazolam (Versed), triazolam (Halcion).

Be careful if you are taking oral diabetes medicine as glipizide (Glucotrol), chlorpropamide (Diabinese), glyburide (Glynase, Diabeta, Micronase), tolazamide (Tolinase), tolbutamide (Orinase); tacrolimus (Prograf); rifampin (Rimactane, Rifadin); warfarin (Coumadin); cyclosporine (Neoral, Sandimmune); antacids; famotidine (Pepcid, AC Pepcid), cimetidine (Tagamet HB, Tagamet), ranitidine (Zantac 75, Zantac), nizatidine (Axid AR, Axid); digoxin (Lanoxicaps, Lanoxin); methylprednisolone (Medrol); phenytoin (Dilantin); rabeprazole (Aciphex), omeprazole (Prilosec), lansoprazole (Prevacid).

Be careful if you have liver disease, achlorhydria.

Avoid consuming alcohol.

Try to avoid machine driving.

It can be dangerous to stop Nizoral taking suddenly.

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The influence of sodium taurocholate (TC) on the intestinal absorption of drugs was studied in vivo in a chronically isolated internal loop in the rat. The hydrophilic drugs paracetamol (PA) and theophylline (TP) and the lipophilic drugs griseofulvin (GF) and ketoconazole (KE) were used as model drugs. The drug concentrations were kept below the saturation concentration. Absorption kinetics of the drugs were evaluated on the basis of disappearance rates of the drug from luminal solutions in the intestinal loop. Concentrations of TC above the critical micelle concentration (CMC) did not affect the absorption rate of the hydrophilic drugs PA and TP; the barrier function of the intestinal wall for PA and TP was not altered in the presence of taurocholate. The addition of concentrations of TC above the CMC in the perfusion solution resulted in a reduction of the absorption rate of GF and KE. The reduction in the absorption kinetics of GF in the presence of TC correlated well with the reduction of the drug-free fraction in solution due to micellar solubilization. For KE this relation was less clear. It was not possible to determine, on the basis of the phase-separation model, to what extent the fraction of the drug incorporated in TC micelles contributes to the overall diffusion of GF and KE across the preepithelial diffusion barrier. It was concluded that TC exhibits only a minor, if not negligible, effect on the barrier function of the aqueous diffusion barrier adjacent to the intestinal wall.

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Navitoclax is a targeted B-cell lymphoma-2 (Bcl-2) family protein inhibitor. The present study evaluated the effect of ketoconazole, a strong cytochrome P450 (CYP) 3A4 inhibitor, on the pharmacokinetics of navitoclax in patients with cancer.

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Cycloheximide, ketoconazole, or preexposure of organisms to cytochalasin D prevented Balamuthia mandrillaris-associated cytopathogenicity in human brain microvascular endothelial cells, which constitute the blood-brain barrier. In an assay for inhibition of cyst production, these three agents prevented the production of cysts, suggesting that the biosynthesis of proteins and ergosterol and the polymerization of actin are important in cytopathogenicity and encystment.

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Pityrosporum folliculitis (PF) is frequently misdiagnosed as acne vulgaris, resulting in unnecessary and prolonged treatment. Sixty-two patients with PF seen in the Dermatology Clinic, King Gahad Hofuf Hospital, Saudi Arabia were evaluated clinically. The diagnosis was confirmed by routine histology with haemotoxylineosin staining and Periodic acid-Schiff staining. Scrapings of the lesions, especially the molluscum-like papules, were mounted in KOH/Parker blue ink and examined under the microscope. Patients, divided into three groups as follows, were given treatment for 4 weeks: (1) 20 were treated with ketoconazole, 200 mg orally in addition to ketoconazole shampoo 2% daily; (2) 20 were given only ketoconazole, 200 mg daily, orally; (3) 12 used econazole nitrate 1% solution applied twice daily; and (4) 10 used miconazole nitrate 2% cream twice daily. Cases in groups 3 and 4, who did not respond, were given the same treatment as for group 1. All who responded were kept on ketoconazole shampoo 2% twice weekly. PF was commoner in young adult females as the female to male ratio was 2:1 while the mean age was 21.5 years. The most common site involved was the trunk (95%) in the form of papules, pustules and molluscoid lesions. The latter type of lesion yielded the highest number of spores using KOH/Parker blue ink. Biopsy was positive in 87% of the patients but is usually not necessary. Combined topical and systemic ketoconazole produced clearance of the lesions in 20 patients (100%), while systemic therapy only resulted in 75% clearance (15 of 20). Topical econazole and miconazole failed in 20 of 22 (90%) and improved only two patients. There were no significant side-effects from the drugs.

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Tofisopam is an anxiolytic agent of the BZD group, chemically 1(3-4 dimethoxyphenyl)-4methyl-5-ethyl-7,8 dimethoxy-5H-2,3-benzodiazepine. TZP differs from the traditional 1,4-benzodiazepines regarding the positions of the nitrogen atoms. Three clinical cases were reported where tofisopam increased the blood level of immunosuppressive agent leading clinically relevant adverse drug reaction and necessitating reduction of the dose of the drugs or discontinuation of the administration of tofisopam. The administered immunosuppressive agent is a substrate of the CYP3A4 system, so the effect of tofisopam on the CYP3A4 enzyme was investigated in vitro using human recombinant CYP3A4 supersome. Benzyoxy-4-(trifluoromethyl)-coumarin (BFC) was used as substrate. Tofisopam in 0.1, 0.25, 0.5, 0.75, 1 and 5 micromol/l concentrations inhibited dose dependently the enzyme activity. Activity inhibition rates were 4%, 29%, 40%, 56%, 61% and 94%, respectively and the IC50 was 0.8 micromol/l. The IC50 of positive control substance ketoconazole was 0.03 micromol/l. In in vitro experiments the inhibitory effect of tofisopam was lower than that of ketoconazole (potent CYP3A4 inhibitor) with an order of magnitude. According to the in vitro results it could be concluded that tofisopam is an inhibitor of CYP3A4 but to clarify the clinical importance of this inhibition further human clinical data are needed.

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Ketoconazole, cinnamyl-3,4-dihydroxy-alpha-cyanocinnamate, and gossypol are reported inhibitors of the lipoxygenase (LO) and cytochrome P-450 enzyme systems and are potent blockers of swelling-activated efflux of organic osmolytes and volume-sensitive anion channels in C6 glioma cells. To directly test the hypothesis that LO- or cytochrome P-450-derived products of arachidonic acid (AA) participate in the regulation of these volume-sensitive transport pathways, we incubated C6 cells with [1-14C]AA and observed the extent and profile of its conversion under basal conditions and after acute swelling. High-performance liquid chromatographic analysis revealed that most (70-80%) of the labeled AA remained unchanged with only 6-8% and 10-20% of label converted to LO- [12(S)- and 15(S)-hydroxyeicosatetraenoic acid (12- and 15-HETE)] and cyclooxygenase- [prostaglandin (PG) E2 and PGF2a] derived products, respectively. Leukotrienes and epoxyeicosatrienoic acid compounds were not produced. The conversion profile of [1-14C]AA was not altered substantially by cell swelling. Treatment of cells with the LO-derived products 5-, 12-, and 15-HETE or their immediate metabolic precursors, 5(S)-, 12(S)-, and 15(S)-hydroxyperoxyeicosatetraenoic acid, at 5 microM concentrations did not stimulate efflux of [3H]inositol. In addition, treatment with HETEs did not override the inhibition of efflux observed with the LO-cytochrome P-450 blocker ketoconazole. Whole cell patch-clamp experiments demonstrated that volume-sensitive anion channels, the postulated pathway for organic osmolyte efflux in C6 cells, are rapidly and reversibly blocked by ketoconazole in a fashion suggestive of direct inhibition rather than via interruption of a second messenger pathway.(ABSTRACT TRUNCATED AT 250 WORDS)

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Systematic review of randomized controlled trials.

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Ketoconazole, a broad-spectrum imidazole antimycotic agent, interferes with cytochrome P-450 enzyme systems in several organs (testis, ovary, adrenal gland, kidney, liver). It inhibits cholesterol synthesis by a dose-dependent transient braking of the 14 alpha-demethylase. Steroidogenesis is inhibited by its action on the C17-20 lyase, the cholesterol side-chain cleavage enzyme and the 17 alpha-hydroxylase. In gonads it inhibits aromatase and adrenocortical steroid biosynthesis is also inhibited at the 11 beta-hydroxylation and 18-hydroxylation steps. Its antiandrogenic effect may be useful in the management of metastatic prostate carcinoma and in testotoxicosis, its usefulness in the treatment of hirsutism is more questionable. Its anticortisolic effect may be useful in most Cushing's syndromes, where drug control of hypercortisolism is suitable for patients undergoing surgery, as well as those in whom more definitive treatment is delayed. Its usefulness as inhibitor of vitamin D or mineralocorticoids requires further investigation.

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Results revealed that the prevalence of Candida species in diabetic individuals was higher when compared with non-diabetic healthy individuals. The most predominantly isolated species in diabetic and non-diabetic individuals from buccal cavity was Candida albicans. C. tropicalis was predominant among the non-albicans Candida isolated from both diabetic and non-diabetic individuals. Among denture wearers C. glabrata was predominant. In vitro antifungal susceptibility testing shows that ketoconazole, fluconazole and itraconazole were effective against the isolated Candida species.

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Infection of the oral mucous membrane is frequent in patients with removable prostheses, either totally of partially, and particularly when the prostheses is palatal. The principal etiological factor causing the infection is accepted to be "Candidas" aided by the presence of plaque bacteria (in patients with poor oral hygiene care), and a poor fit of the prostheses to the soft tissues. Treatment of the infection must proceed in the following order: a) use of effective medication against oral fungus such as Nystatin or Ketoconazole. b) Meticulous oral hygiene care in the mucous membrane as well as in the prostheses, but using the prostheses as little as possible during the treatment period. c) A total cure of the infection (denture stomatitis) before proceeding to the next phase of the treatment. d) Determination of the adjustment and occlusion of the prostheses in order to determine those areas of the prostheses which need to be refilled because of maladjustment of the prostheses to the soft tissues of the patient.

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The National Committee for Clinical Laboratory Standards reference broth macrodilution method for antifungal susceptibility testing was compared with the E test by testing 86 clinical isolates of Candida spp. and Cryptococcus neoformans. The MIC agreement rates for the two methods for Candida spp. were 73-89% within +/-1 doubling dilution and 87-100% within +/-2 dilutions. For C. neoformans, agreement within +/-1 dilution was > 70% for all the agents tested except fluconazole for which agreement was 35%. Our data support the further evaluation of the E test as an alternative method for antifungal susceptibility testing. However, E test MICs of fluconazole for C. neoformans, particularly C. neoformans var. gattii should be interpreted with caution, as falsely elevated MICs may occur.

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In this study, probe-based assays with rat liver microsome system were used to characterize the inhibitory effects of FKA. Molecular docking study was performed to further explore the binding site of FKA on CYP450 isoforms. In addition, chemical inhibition experiments using specific inhibitors (a-naphthoflavone, quinidine, sulfamethoxazde, ketoconazole, omeprazole) were performed to clarify the individual CYP450 isoform that are responsible for the metabolism of FKA.

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The International Conference of Harmonisation (ICH) E14 guideline for thorough QT studies requires assessing the propensity of new non-antiarrhythmic drugs to affect cardiac repolarization. The present study investigates whether a composite ECG measure of T-wave morphology (Morphology Combination Score [MCS]) can be used together with the heart rate corrected QT interval (QTc) in a fully ICH E14-compliant thorough QT study to exclude clinically relevant repolarization effects of bilastine, a novel antihistamine.

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Ketoconazole may cause severe anaphylactic shock even when taken orally. Invasive catheterization and elevated tryptase levels can provide important information in the management of anaphylactic shock.

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Seven phase I studies were conducted to investigate the effects of repeated dosing of ketoconazole, diltiazem, rifampin, or lithium on the pharmacokinetics (PK) of single oral doses of lurasidone, or the effects of repeated dosing of lurasidone on the PK of digoxin, midazolam, or the oral contraceptive norgestimate/ethinyl estradiol. Two 6-week, phase III studies included evaluation of the potential for interaction between lurasidone and lithium or valproate. Maximum serum or plasma concentration (Cmax) and area under the concentration-time curve (AUC) were calculated.

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Two groups of recent clinical isolates of Candida albicans consisting of 101 isolates for which fluconazole MICs were < or = 0.5 microgram/ml (n = 50) and > or = 4.0 micrograms/ml (n = 51), respectively, were compared for their susceptibilities to fluconazole, clotrimazole, miconazole, ketoconazole, and itraconazole. Susceptibility tests were performed by a photometer-read broth microdilution method with an improved RPMI 1640 medium supplemented with 18 g of glucose per liter (RPMI-2% glucose; J. L. Rodríguez-Tudela and J. V. Martínez-Suárez, Antimicrob. Agents Chemother. 38:45-48, 1994). Preparation of drugs, basal medium, and inocula was done by the recommendations of the National Committee for Clinical Laboratory Standards. The MIC endpoint was calculated objectively from the turbidimetric data read at 24 h as the lowest drug concentration at which growth was just equal to or less than 20% of that in the positive control well (MIC 80%). In vitro susceptibility testing separated azole-susceptible strains from the strains with decreased susceptibilities to azoles if wide ranges of concentrations (20 doubling dilutions) were used for ketoconazole, miconazole, and clotrimazole. By comparison with isolates for which fluconazole MICs were < or = 0.5 microgram/ml, those isolates for which fluconazole MICs were > or = 4.0 micrograms/ml were in general less susceptible to other azole drugs, but different patterns of decreased susceptibility were found, including uniform increases in the MICs of all azole derivatives, higher MICs of several azoles but not others, and elevated MICs of fluconazole only. On the other hand, decreased susceptibility to any other azole drug was never found among strains for which MICs of fluconazole were lower.

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Co-administration of navitoclax with ketoconazole did not increase navitoclax exposure above that observed with navitoclax monotherapy and did not appear to affect its safety profile. Results suggest CYP3A does not play a major role in elimination of navitoclax.

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The purpose of this study was to develop, implement, and evaluate a practice guideline using ketoconazole for the prevention of the adult respiratory distress syndrome (ARDS) in critically ill patients.

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Chronic hypercalcemia, hypercalciuria, and/or nephrolithiasis may be caused by mutations in CYP24A1 causing failure to metabolize 1,25-dihydroxyvitamin D.

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Coccidioidomycosis is a highly variable disease. Initial respiratory tract infection can lead to self-limited pneumonia, pulmonary complications, and extrapulmonary disease. The early infection requires no therapy, except in immunosuppressed patients and other selected patients. Treatment for pulmonary complications may include surgery for cavities or pyopneumothorax (resulting from rupture of a cavity) and antifungal therapy for chronic pneumonia. The majority of extrapulmonary disease occurs in the skin, bones and joints, or meninges and is an indication for treatment with antifungal agents and sometimes adjunctive surgery. Meningitis is a particularly serious consequence of dissemination and currently is best treated with intrathecal instillation of antifungal agents. Antifungal agents useful in the treatment of coccidioidomycosis are amphotericin B, which is administered intravenously and is relatively toxic, and ketoconazole, which is administered orally and whose toxicities are less serious and reversible. Because studies to compare the efficacy of these two drugs have not been performed, selecting between them for use in individual patients is most rationally based on the pharmacologic differences, which lend themselves to different clinical settings. In future years, new antifungal agents will likely be available, some of which will offer significant advantages over present therapies. Itraconazole is an imidazole related to ketoconazole, which appears to be effective and possibly less toxic than ketoconazole. Fluconazole, another imidazole, has broad antifungal activity, a long serum half-life, and excellent penetration into the cerebrospinal fluid. Thus, the pharmacology of this agent would appear ideal for use in treating coccidioidal meningitis. In addition, other compounds with different modes of action are now under investigation in preclinical studies. It is therefore likely that continued improvements will occur in the coming years in the treatment of this disease.

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An animal model for fungal peritonitis was developed and is described. This model was used to compare various therapeutic options for Candida albicans peritonitis. Twenty-four rabbits were treated on three different protocols. Results from these protocols confirm the clinical observation that removal of the catheter is necessary for successful treatment of fungal peritonitis. Further, the combination of catheter replacement and imidazole anti-fungal therapy appears to be curative in this animal model, and suggests that by using this protocol, discontinuation of peritoneal dialysis may not be necessary.

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This study was performed to evaluate whether concomitant treatment with ketoconazole could reduce the clearance of paclitaxel given to ovarian cancer patients. Paclitaxel, 175 mg/m2, was given as a 3-hour continuous intravenous infusion and repeated every 21 days. Initially, ketoconazole, 100 to 1600 mg, was given as a single oral dose 3 hours after paclitaxel. Later, ketoconazole, 200 mg, was given perorally 3 hours before paclitaxel. Plasma drug concentrations were measured by high-pressure liquid chromatography (HPLC), and cytochrome P450 3A (CYP3A) activity was measured with the erythromycin breath test (ERMBT). Ketoconazole did not alter plasma concentrations of paclitaxel or its principal metabolite, 6 alpha-hydroxypaclitaxel. Although there was marked inter- and intrapatient variability in ketoconazole pharmacokinetics, peak plasma concentrations in all but one course were below the 50% inhibitory concentration (IC50) point determined for inhibition of paclitaxel metabolism in vitro. Therefore, paclitaxel and ketoconazole can be coadministered safely without dose adjustments. There was no correlation between ERMBT measurements and serial plasma concentrations of paclitaxel. The erythromycin breath-test measurements did correlate with the corresponding ketoconazole plasma concentrations. The erythromycin breath test is a valuable tool for measuring instantaneous CYP3A activity in vivo. This clinical study confirms the results of prior studies with human-derived materials in vitro, reinforcing the notion that such studies are useful predictors of drug pharmacokinetics and interactions in vivo.

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The CYP17A1 inhibitor abiraterone markedly reduces androgen precursors and is thereby effective in castration-resistant prostate cancer (CRPC). However, abiraterone increases progesterone, which can activate certain mutant androgen receptors (AR) identified previously in flutamide-resistant tumors. Therefore, we sought to determine if CYP17A1 inhibitor treatment selects for progesterone-activated mutant ARs.

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Cutaneous cryptococcosis was diagnosed in 3 cats. No other organ involvement was found. One cat has remained healthy after surgical excision of the cryptococcal skin lesion. One cat was euthanatized after diagnosis. The third cat was treated successfully with a 5-month course of ketoconazole.

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Oxycodone is commonly used to treat severe pain in adults and children. It is extensively metabolized in the liver in adults, but the maturation of metabolism is not well understood. Our aim was to study the metabolism of oxycodone in cryopreserved human hepatocytes from different age groups (3 days, 2 and 5  months, 4  years, adult pool) and predict hepatic plasma clearance of oxycodone using these data. Oxycodone (0.1, 1, and 10 μM) was incubated with hepatocytes for 4 h, and 1 μM oxycodone also with CYP3A inhibitor ketoconazole (1 μM). Oxycodone and noroxycodone concentrations were determined at several time points with liquid chromatography-mass spectrometry. In vitro clearance of oxycodone was used to predict hepatic plasma clearance, using the well-stirred model and published physiological parameters. Noroxycodone was the major metabolite in all batches and ketoconazole inhibited the metabolism markedly in most cases. A clear correlation between in vitro oxycodone clearance and CYP3A4 activity was observed. The predicted hepatic plasma clearances were typically much lower than the published median total plasma clearance from pharmacokinetic studies. The data suggests that there are no children-specific metabolites of oxycodone. Moreover, CYP3A activity seems to be the major determinant in metabolic clearance of oxycodone regardless of age group or individual variability in hepatocyte batches.

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[3H]Loratadine was incubated with human liver microsomes to determine which cytochrome P450 (CYP) enzymes are responsible for its oxidative metabolism. Specific enzymes were identified by correlation analysis, by inhibition studies (chemical and immunoinhibition), and by incubation with various cDNA-expressed human P450 enzymes. Descarboethoxyloratadine (DCL) was the major metabolite of loratadine detected following incubation with pooled human liver microsomes. Although DCL can theoretically form by hydrolysis, the conversion of loratadine to DCL by human liver microsomes was not inhibited by the esterase inhibitor phenylmethylsulfonyl fluoride (PMSF), and was dependent on NADPH. A high correlation (r2 = 0.96, N = 10) was noted between the rate of formation of DCL and testosterone 6 beta-hydroxylation, a CYP3A-mediated reaction. With the addition of ketoconazole (CYP3A4 inhibitor) to the incubation mixtures, the residual rate of formation of DCL correlated (r2 = 0.81) with that for dextromethorphan O-demethylation, a CYP2D6 reaction. Rabbit polyclonal antibodies raised against the rat CYP3A1 enzyme (5 mg IgG/nmol P450) and troleandomycin (0.5 microM), a specific inhibitor of CYP3A4, decreased the formation of DCL by 53 and 75%, respectively, when added to 1.42 microM loratadine microsomal incubations. Quinidine (5 microm), a CYP2D6 inhibitor, inhibited the formation of DCL approximately 20% when added to microsomal incubations of loratadine at concentrations of 7-35 microM. Incubation of loratadine with cDNA-expressed CYP3A4 and CYP2D6 microsomes catalysed the formation of DCL with formation rates of 135 and 633 pmol/min/nmol P450, respectively. The results indicated that loratadine was metabolized to DCL primarily by the CYP3A4 and CYP2D6 enzymes in human liver microsomes. In the presence of a CYP3A4 inhibitor, loratadine was metabolized to DCL by the CYP2D6 enzyme. Conformational and electrostatic analysis of loratadine indicated that its structure is consistent with substrate models for the CYP2D6 enzyme.

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We report a case of cutaneous infection caused by Phialemonium curvatum GAMS et COOKE, 1983, after bone marrow transplantation. The genus Phialemonium was created by GAMS & MCGINNIS in 1983 including three new species: Ph. obovatum, Ph. curvatum and Ph. dimorphosporum, and represents an intermediate genus between Acremonium and Phialophora. Nowadays, the genus Phialemonium is considered to be a pheoid fungus which may cause the eventual lesions observed in pheo- and hyalohyphomycosis. Species of this genus have been described as opportunistic agents in humans and animals, mainly as a result of immunosuppression. In the present case, the patient had multiple myeloma and received an allogenic bone marrow transplant from his HLA-compatible brother. Two months after transplantation, he developed purplish and painful nodular lesions on the right ankle. Some of these lesions drained spontaneously and apparently hyaline mycelial filaments were observed, whose culture was initially identified as Acremonium sp. Subsequent studies showed that the fungus was Phialemonium curvatum. The infection was treated with amphotericin B, followed by ketoconazole. The patient was submitted to surgical debridement followed by two skin grafts to repair the bloody area. The duration of the treatment was 4 months and secondary prophylaxis with ketoconazole alone was maintained for one additional month. No recurrence was observed after discontinuation of treatment. The authors comment on the pathogenicity of the genus Phialemonium.

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Coccidioidal meningitis is lethal in humans. A reproducible murine model was established by lumbar intrathecal injection of Coccidioides immitis arthroconidia. Cerebrospinal fluid (CSF) samples were obtained by cisternal puncture. Lethal infection developed in all mice given 10-60 colony-forming units ( buy nizoral cfu). Lethargy, ataxia, or paralysis preceded death. Temporal studies after challenge with 27 cfu revealed positive brain (4/5 mice) and spinal cord (2/5 mice) cultures on day 3; CSF samples contained 688 leukocytes/mm(3) and 33 cfu/mL. The results of histopathologic analysis were unremarkable. By day 8, all mice were culture positive (5.0 log(10) cfu in brain tissue and 4.1 log(10) cfu in spinal cord tissue); CSF samples contained 4833 leukocytes/mm(3) and 3425 cfu/mL. Histopathologic examinations showed acute meningitis of the brain and spinal cord, some parenchymal invasion and abscesses, and meningeal arteritis. Groups of mice given ketoconazole had prolonged survival and suppressed lung disease; histopathologic examination demonstrated granulomatous meningitis, possibly a more chronic form. With the development of these models, studies of pathogenesis, host response, and therapy are possible.

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A cytoplasmic antigen was obtained from P. brasiliensis yeast cells by water lysis and sonication, with the aim of detecting delayed hypersensitivity to the fungus. This antigen was studied in patients with paracoccidioidomycosis (active and inactive), tuberculosis and histoplasmosis as well as in normal individuals, and it was compared with a mycelial filtrate antigen employed in buy nizoral the past for the same purpose. The yeast paracoccidioidin proved superior to the mycelial preparation (62.0 vs 24.1%) in patients with active paracoccidioidomycosis; however, in inactive cases, both preparations gave similar results. The size of the reactions was also comparable for both products. In normal subjects and in patients with tuberculosis, skin reactivity was low (not over 10%) and within the expected range of the area. In contrast, patients with histoplasmosis proved highly reactive to both antigens. These results indicate that the newer paracoccidioidin has advantages over the mycelial product as it detects a higher proportion of reactors and as such, may be helpful in studies aimed at defining areas of endemicity in countries where paracoccidioidomycosis is present.

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Hepatic microsomes were harvested from 4 dogs after euthanasia. To investigate the effects of KTZ on CYP metabolic Nisargalaya Brahmi Oil Reviews activities, 7-ethoxyresorufin, tolbutamide, bufuralol, and midazolam hydrochloride were used as specific substrates for CYP1A1/2, CYP2C21, CYP2D15, and CYP3A12, respectively. The concentrations of metabolites formed by CYP were measured by high-performance liquid chromatography, except for the resorufin concentrations that were measured by a fluorometric method. The reaction velocity-substrate concentration data were analyzed to obtain kinetic variables, including maximum reaction velocity, Michaelis-Menten constant, and inhibitory constant (Ki).

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We describe a case of canine mycoses initially diagnosed by clinical signs and enzyme-linked immunosorbent assay anti-fungal test, and later confirmed by the isolation of Paecilomyces sp. during the post-mortem examination. The fungus was isolated from lesions in the kidneys, mitral valve, abdominal aorta and vertebral discs. In this kind of process, it is important to identify the responsible agent early in order to make a study of anti-fungal susceptibility Cymbalta Prescription Cost and establish effective treatment.

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We report the case of a 36-year-old woman with Cushing's syndrome caused by a malignant unresectable neuroendocrine carcinoma of the pancreas that developed bilateral ovarian metastases 7 years after diagnosis. In November 2001, because of abdominal pain and jaundice, the patient underwent radiological investigations and exploratory laparotomy that demonstrated the presence of a 3-cm mass of the head of the pancreas, infiltrating the superior mesenteric vein, associated with Sinemet Cr Generic Name enlargement of multiple abdominal lymph nodes and with a liver nodule. Histological examination of one lymph node and of the liver nodule demonstrated the presence of metastases from a well-differentiated neuroendocrine carcinoma showing corticotropin immunoreactivity. A few months later, the patient started to show the clinical symptoms of Cushing's syndrome and underwent steroid-blocking ketoconazole therapy. The clinical endocrine picture was controlled until the end of 2008, when the endocrine symptoms of the Cushing's syndrome worsened and bilateral ovarian tumors appeared. Hysteroannexectomy was performed and ovarian tumors were found to be metastases from a well-differentiated neuroendocrine carcinoma with morphological and immunohistochemical features overlapping those observed in 2002. The clinical situation worsened and the patient died in November 2009. The clinical aspects and the problems in the differential diagnosis are discussed.

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In the present study, the involvement of cytochrome P450 enzyme(s) in the primary metabolism of laquinimod, a new orally active immunomodulator, has been investigated in human liver microsomes. Hydroxylated and dealkylated metabolites were formed. The metabolite formation exhibited single enzyme Michaelis-Menten kinetics with apparent KM in the range of 0.09 to 1.9 mM and Vmax from 22 to 120 pmol/mg/min. A strong correlation between the formation rate of metabolites and 6beta-hydroxylation of testosterone was obtained within a panel of liver microsomes from 15 individuals (r2 = 0.6 to 0.94). Moreover, ketoconazole and troleandomycin, specific inhibitors of CYP3A4 metabolism, demonstrated a significant inhibition of laquinimod metabolism. Furthermore, in incubations with recombinant CYP3A4, all the primary metabolites were formed. In vitro interaction studies with CYP3A4 substrates and possible concomitant medication demonstrated that laquinimod inhibits the metabolism of ethinyl estradiol with an IC50 value of about 150 microM, which is high above the plasma level of laquinimod after clinically relevant doses. Ketoconazole, troleandomycin, erythromycin, prednisolone, and ethinyl estradiol inhibited the metabolism of laquinimod, and IC50 values of 0.2, 11, 24, 87, and 235 microM, respectively, were calculated. In conclusion, the present study demonstrates that laquinimod is a low affinity substrate for CYP3A4 in human liver microsomes. The likelihood for in vivo effects of laquinimod on the metabolism of other CYP3A4 substrates is minor. However, inhibitory effects on the metabolism of laquinimod by potent and specific inhibitors of CYP3A4 Paracetamol Codeine 20 Mg , such as ketoconazole, are anticipated and should be considered in the continued clinical program for laquinimod.

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The Authors report a case of left adrenal mass incidentally discovered by upper abdominal echogram in a 40 year old man. Physical examination showed no signs of hypercortisolism and plasma cortisol and ACTH levels were in the normal range as well as urinary free cortisol. After adrenalectomy, 4 and 8 month follow-up was performed, without clinical, hormonal and TC evolution. Thirteen months later the patient was referred to our department for widespread oedema, hypertension, hypokalemia and alkalosis. These symptoms were associated with dramatically elevated concentrations of plasmatic and free urinary cortisol. TC showed a large mass in the same Arcoxia 220 Mg adrenal region and diffuse hepatic metastases. In spite of mitotane and ketoconazole therapy the patient died few weeks later.

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The aetiology of recurrent vulvovaginal candidiasis (RVVC) caused by Candida albicans remains unclear. To adequately address the role of antifungal resistance as a potential mechanism for RVVC, a longitudinal susceptibility analysis of 177 C. albicans isolates collected from 50 C. albicans RVVC patients over a period of 3 months to 7 years was performed. Antifungals tested included clotrimazole, ketoconazole, miconazole, itraconazole and fluconazole. Results showed that all vaginal isolates were uniformly susceptible to all drugs tested and that successive isolates from individual patients did not show increased resistance to any drug despite long-term exposure to azoles. These results suggest Augmentin Xr Generic Name that episodes of RVVC caused by C. albicans are rarely of ever attributable to azole antifungal resistance.

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The activity of ketoconazole and itraconazole against 102 strains of Candida sp. was compared in the investigation "in vitro". The investigational material was taken from Combivir Sustiva One Pill patients with different types of mycosis. The values of MICs of ketoconazole and itraconazole were 0.04-100.0 micrograms/ml and 0.02-35.0 micrograms/ml, respectively. From the data obtained it is evident that the average efficacy of itraconazole is 3 to 10 times higher in comparison with ketoconazole though 8 strains (7, 8 percent) of investigated strains have shown greater sensitivity to ketoconazole.

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Oral liquids are safe alternatives to solid dosage forms, notably for elderly and pediatric patients that present dysphagia. The use of ready-to-use Generic Cymbalta Availability suspending vehicles such as SyrSpend SF PH4 is a suitable resource for pharmacists as they constitute a safe and timesaving option that has been studied often. The objective of this study was to evaluate the stability of 10 commonly used active pharmaceutical ingredients (allopurinol 20 mg/mL; amitriptyline hydrochloride 10 mg/mL; carbamazepine 25 mg/mL; domperidone 5 mg/mL; isoniazid 10 mg/mL; ketoconazole 20 mg/mL; lisinopril 1 mg/mL; naproxen 25 mg/mL; paracetamol [acetaminophen] 50 mg/mL; and sertraline hydrochloride 10 mg/mL) compounded in oral suspensions using SyrSpend SF PH4 as the vehicle throughout the study period and stored both at controlled refrigerated (2°C to 8°C) and room temperature (20°C to 25°C). Stability was assessed by means of measuring the percent recovery at varying time points throughout a 90-day period. The quantification of the active pharmaceutical ingredients was performed by high-performance liquid chromatography through a stability-indicating method. Methods were adequately validated. Forced-degradation studies showed that at least one parameter influenced the stability of the active pharmaceutical ingredients. All suspensions were assayed and showed active pharmaceutical ingredient contents between 90% and 110% during the 90-day study period. Although the forced-degradation experiments led to visible fluctuations in the chromatographic responses, the final preparations were stable in the storage conditions. The beyond-use dates of the preparations were found to be at least 90 days for all suspensions, both for controlled refrigerated temperature and room temperature. This confirms that SyrSpend SF PH4 is a stable suspending vehicle for compounding with a broad range of different active pharmaceutical ingredients for different medical usages.

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We investigated itraconazole, a new triazole antifungal agent that poorly penetrates ocular tissues after oral administration. We injected itraconazole in doses from 10 to 100 micrograms dissolved in 100% dimethyl sulfoxide into the eyes of New Zealand rabbits. Ocular toxicity studies performed five weeks after administration showed no substantial retinal or histopathologic changes in eyes injected with either 100% dimethyl sulfoxide Trental Pentoxifylline 400 Mg or 10 micrograms of itraconazole. Higher doses caused focal areas of retinal necrosis. Our results indicated that intravitreal doses of 10 micrograms or less of itraconazole may be beneficial in the treatment of fungal endophthalmitis.

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The P2Y(12) receptor is a key player in platelet activation and represents an effective pharmacological target for the inhibition of platelet aggregation and prevention of atherothrombotic events. Indeed, the clinical use of the P2Y(12) receptor inhibitor clopidogrel is an effective strategy for inhibiting platelet activity in patients with acute coronary syndrome, and for preventing thrombotic events in those undergoing percutaneous coronary intervention with stenting. However, clopidogrel has several drawbacks, which include delayed onset of action, large inter-individual variability in platelet response, genetic polymorphism of the metabolizing enzyme, drug-drug interactions (DDIs), and the two-step activation process catalyzed by a series of cytochrome P450 (CYP) isoenzymes. For these reasons, new P2Y(12) receptor inhibitors have been developed in an attempt to improve on the pharmacological and clinical profile of clopidogrel. Three new P2Y(12) receptor inhibitors--prasugrel, cangrelor, and ticagrelor--have arrived, and more are coming into clinical use. Each of these antagonists has individual properties and, according to their mechanism of inhibition, can be divided into irreversible (prasugrel) and reversible inhibitors (ticagrelor, cangrelor). These agents also have different metabolic pathways: prasugrel is a prodrug that requires metabolic activation through a cytochrome-dependent pathway, while ticagrelor and cangrelor do not require metabolic conversion. However, ticagrelor is a CYP3A4 substrate/inhibitor and thus it can be involved in DDIs. Indeed, ticagrelor significantly increases the plasma levels of CYP3A4 substrates such as statins. Moreover, concomitant use with strong CYP3A4 inhibitors (such as ketoconazole, itraconazole, clarithromycin, ritonavir, telithromycin, etc.) is contraindicated, while the co-administration of ticagrelor with potent CYP3A inducers (carbamazepine, rifampicin, phenytoin, phenobarbital) is discouraged. Prasugrel and ticagrelor determine a faster, greater, and more consistent Cymbalta Low Cost adenosine diphosphate (ADP)-receptor inhibition than clopidogrel, with a near complete inhibition of platelet aggregation between 1-2 h after administration of an oral loading dose, while cangrelor shows a rapid and potent platelet inhibitory effect with intravenous infusion. Thus, the different pharmacokinetic and pharmacodynamic characteristics of the P2Y(12) receptor inhibitors enable clinicians to personalize therapy according to patient-specific medical requirements for better prevention of atherothrombotic events. In the present review, we describe the pharmacological properties, the pharmacokinetic and pharmacodynamic differences, and the clinical efficacy of the currently available P2Y(12) receptor inhibitors.

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The aim of the present study was to evaluate the effects of gastric pH on the oral absorption of poorly water-soluble drugs using an in vitro system. A dissolution/permeation system (D/P system) equipped with a Caco-2 cell monolayer was used as the in vitro system to evaluate oral drug absorption, while a small vessel filled with simulated gastric fluid (SGF) was used to reflect the gastric dissolution phase. After applying drugs in their solid forms to SGF, SGF solution containing a 1/100 clinical dose of each drug was mixed with the apical solution of the D/P system, which was changed to fasted state-simulated intestinal fluid. Dissolved and permeated amounts on applied amount of drugs were then monitored for 2h. Similar experiments were performed using the same drugs, but without the gastric phase. Oral absorption with or without the gastric phase was predicted in humans based on the amount of the drug that permeated in the D/P system, assuming that the system without the gastric phase reflected human absorption with an elevated gastric pH. The dissolved amounts of basic drugs with poor water solubility, namely albendazole, dipyridamole, and ketoconazole, in the apical solution and their permeation across a Caco-2 cell monolayer were significantly enhanced when the gastric dissolution process was reflected due to the physicochemical properties of basic drugs. These amounts resulted in the prediction of higher oral absorption with normal gastric pH than with high gastric pH. On the other hand, when diclofenac sodium, the salt form of an acidic drug, was applied to the D/P system with the gastric phase, its dissolved and permeated amounts were significantly lower than those without the gastric phase. However, the oral absorption of diclofenac was predicted to be complete (96-98%) irrespective of gastric pH because the permeated amounts of diclofenac under both conditions were sufficiently high to achieve complete absorption. These estimations of the effects of gastric pH on the oral absorption of poorly water-soluble drugs were consistent with observations in humans. In conclusion, the D/P system with the gastric phase may be a useful tool for better predicting the oral absorption of poorly water-soluble basic drugs. In addition, the effects of gastric pH on the oral absorption of poorly water-soluble drugs may be evaluated by the D/P system with and without the gastric phase.

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Steroid synthesis inhibitors are commonly used in the treatment of patients with Cushing's disease, but may also improve psychopathology in hypercortisolemic depressed patients. Since glucocorticoids exert a negative feedback at pituitary and supra-pituitary levels, the inhibition of steroid synthesis may lead to increased expression of corticotropin-releasing hormone (CRH) and arginine vasopressin (AVP). We studied the effect of treatment with 800 mg ketoconazole (3 weeks) upon the concentrations of basal plasma cortisol in the evening, corticosteroid-binding globulin (CBG), dehydroepiandrosterone-sulfate (DHEA-S), and ACTH as well as the concentrations of cortisol, CRH, and AVP in cerebrospinal fluid (CSF) at 8.30 h in 10 healthy, male volunteers. While we found cortisol plasma concentrations to be unchanged, we noted a significant increase in ACTH (post: 45.1+/-43.5; pre: 14.2+/-5.2 pmol/l; F(1,8)=9.78, p<0.02) and CBG concentrations (post: 38.8+/-4.3; pre: 31.9+/-4.2 microg/l), but DHEA-S plasma concentrations declined (post: 1.75+/-1.83; pre: 2.75+/-2.80 mg/l; F(1,8)=7.9, p<0.03). CRH concentrations in CSF were unchanged after treatment (post: 62.5+/-15.9; pre: 63.7+/-13.9 pg/ml), while there was a trend for AVP concentrations to rise during treatment (post: 2.52+/-1.18; pre: 1.92+/-0.96 pg/ml; paired t=-1.9, p<0.1). Cortisol CSF concentrations declined in the elderly (pre: 52.5+/-23.2; post: 26.7+/-4.6 nmol/l), but not in the young subgroup (pre: 15.6+/-11.3; post: 27.7+/-9.4 nmol/l). We thus conclude that the treatment of healthy controls with steroid-synthesis inhibitors does not lead to a major increase in CRH secretion.

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Twenty patients with COPD (10 women and 10 men; age, 70 ± 8 years) inspired through resistances during practice sessions to identify an individualized target load that caused ratings of intensity and unpleasantness of breathlessness ≥ 50 mm on a 100-mm visual analog scale. At two interventions, blood levels of β-endorphin and adrenocorticotropic hormone (ACTH) were measured, ketoconazole (600 mg) or placebo was administered orally, and patients rated the two dimensions of breathlessness each minute during resistive load breathing (RLB).

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The 47-year-old male patient was admitted to the hospital because of newly diagnosed diabetes and elevated liver function tests (gamma glutamyl transferase 303 U/l). On admission the patient reported a reduction of appetite, which had increased during the past 2 weeks, fatigue, muscular weakness, polyuria and polydypsia. On physical examination the patient was moderately overweight, the blood pressure was normal. There were leg edema, which had not responded to previous treatment. There were no additional signs of right heart failure.

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Recent interest in the neurotoxicity of haloperidol is based on its oxidation in rodents to the pyridinium derivative, HPP+, a structural analog of the neurotoxin, 1-methyl-4-phenylpyridinium (MPP+). Recently, we reported that HPP+ and a newly identified reduced pyridinium, RHPP+, were present in blood and urine of haloperidol-treated schizophrenics and that the concentrations of RHPP+ exceeded those of HPP+. In this study, we examined pathways for formation of RHPP+ in subcellular fractions of human liver (n = 5) and brain (basal ganglia; n = 5). The major pathway was reduction of HPP+ (20 microM) to RHPP+ in cytosol (0.17-0.39 and 0.03-0.07 microM RHPP+/g cytosolic protein per h in liver and brain, respectively). The reactions were inhibited significantly by menadione and in brain also by daunorubicin. The inhibition profile, cytosolic location and strict NADPH dependence suggest that the enzymes involved are ketone reductases. A second pathway was oxidation of reduced haloperidol (50 microM), a major metabolite of haloperidol in blood and brain, to RHPP+. In liver microsomes, 0.17-0.63 mumol RHPP+ was formed /g microsomal protein per h. A potent inhibitor of the pathway was ketoconazole (IC50, 0.8 microM), which suggests that P-450 3A isozymes could be involved. In brain mitochondria but not microsomes, reduced haloperidol (120 microM) was oxidised to RHPP+ at a small but significant rate (0.005-0.020 mumol RHPP+/g mitochondrial protein per h) which was not attenuated by SKF 525A, quinidine, ketoconazole, or monoamine oxidase inhibitors. Further studies are warranted to establish the biological importance of these metabolites in vivo.

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Cushing's syndrome (CS) is a rare disease caused by a chronic excess of cortisol. Hypercortisolaemia may affect reproductive system leading to infertility in women. However, some of the patients remain fertile, although pregnancy is uncommon. In our report, we describe the case of a 31-years old woman suffering from hypertension, oligomenorrhea, easy bruising, muscle weakness and elevated levels of cortisol. During hospitalization, high level of serum cortisol with stiff diurnal rhythm and undetectable plasma ACTH concentration were found. The overnight 1 mg dexamethasone (DEX) suppression test and the test with 8 mg of DEX were performed - plasma cortisol levels after both doses of DEX were over expected values. Thus, the diagnosis of ACTH independent hypercortisolaemia was established. After three weeks of ketoconazole treatment, high level of β-HCG was found corresponding to the third week of pregnancy. The ketoconazole was shift to metyrapone but afterwards ketoconazole was added again. The treatment was well tolerated and pregnancy proceeded without complications. US scan revealed a 2 cm adenoma of the left adrenal gland, confirmed by CT. An adrenalectomy was performed. Concluding, we think that medical treatment of CS in pregnant women is well tolerated and safe both for the mother and fetus.

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To examine the clinical presentation, endoscopic features, laboratory diagnosis, and outcome of cytomegalovirus esophagitis in patients with the acquired immunodeficiency syndrome (AIDS).

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The aims of this study were to determine the incidence of fungal infections in hospital intensive care units and to evaluate a molecular method to detect these infections.

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A simple, rapid and highly sensitive LC-MS/MS method was developed and validated for the determination of ketoconazole in human plasma. Sample preparation was accomplished through a single step liquid-liquid extraction by ethyl acetate. The chromatography separation was carried out on a Hedera CN (150mm×2.1mm, 5μm) column with isocratic elution using acetonitrile and 10mM ammonium acetate containing 0.1% formic acid (45:55, v/v) as the mobile phase. The flow rate was 0.5mL/min. Detection was performed in the positive ion electrospray ionization mode using multiple reaction monitoring of the transitions of 531.2→489.3 and 286.1→217.1 for ketoconazole and letrozole (the internal standard), respectively. The method exhibited good linearity over the concentration range of 0.01-12ng/mL for ketoconazole. The intra- and inter-batch precision and accuracy of ketoconazole were all within the acceptable criteria. The method was successfully applied to a clinical study of the exposure to ketoconazole in Chinese seborrheic dermatitis patients after topical administration of two ketoconazole formulations of foam and lotion, respectively. The study results showed that there was little systemic absorption of ketoconazole in patients for the two formulations, and the ketoconazole foam and lotion are safe therapeutic drugs for seborrheic dermatitis patients.

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To characterize possible Trichophyton rubrum phenotypes, which circulate in two Brazilian localities, we tested 53 isolates of this dermatophyte for their ability to assimilate several carbon sources, for keratinase, proteinase, phospholipase, lipase and desoxiribonuclease (DNase) secretions, and for their susceptibility to the antifungals fluconazole, ketoconazole and itraconazole. For each method, the isolates were submitted to similarity analysis and the methods were evaluated for their discriminatory indexes. None of the isolates were capable of assimilating arabinose, dulcitol, lactose, melibiose, ribose and xylose, while all of the isolates assimilated maltose, sucrose and sorbitol. However, adonitol, cellobiose, dextrin, erythritol, fructose, galactose, inulin, mannitol, mannose, raffinose, rhamnose and trehalose were assimilated by some isolates but not by others. All isolates secreted keratinase and DNase, while none secreted phospholipase. Proteinase and lipase were secreted only by some isolates. All but four isolates were resistant to fluconazole, most of them were sensitive to ketoconazole and all were sensitive to itraconazole. Carbohydrate assimilation was the method that presented the highest discriminatory index, and also the method that displayed the largest number of biotypes. Taken together, these data suggest that significant phenotypic variations exist among T. rubrum isolates. They seem to occur independently from their geographic origins.

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Maraviroc was metabolized to its N-dealkylated product via a single CYP enzyme characterized by a K(m) of 21 microM and V(max) of 0.45 pmol pmol(-1) min(-1) in human liver microsomes and was inhibited by ketoconazole (CYP3A4 inhibitor). In a panel of recombinant CYP enzymes, CYP3A4 was identified as the major CYP responsible for maraviroc metabolism. Using recombinant CYP3A4, N-dealkylation was characterized by a K(m) of 13 microM and a V(max) of 3 pmol pmol(-1) CYP min(-1). Simulations therefore focused on the effect of CYP3A4 inhibitors on maraviroc pharmacokinetics. The simulated median AUC ratios were in good agreement with observed clinical changes (within twofold in all cases), although, in general, there was a trend for overprediction in the magnitude of the DDI.

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A 54-year-old woman presented with clinical and biochemical features of Cushing's syndrome and an unsuppressed ACTH concentration. She denied recent exogenous corticosteroid use.

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The preparation and in vitro antifungal activity of a novel series of cis-5-alkyl (or alkenyl)-3-phenyl-3-(1H-azol-1-ylmethyl)-2-methylisoxazol idines are described. The overall activity of the 3-(1H-imidazol-1-ylmethyl) analogues was higher than that of the corresponding 3-(1H-1,2,4-triazol-1-ylmethyl) derivatives. Compound 4b emerged as the most potent derivative. When compared to ketoconazole, several of the analogues tested demonstrated equipotent or superior activity against Trichophyton and Candida sp.

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The many drugs that are available at present to treat fungal infections can be divided into four broad groups on the basis of their mechanism of action. These antifungal agents either inhibit macromolecule synthesis (flucytosine), impair membrane barrier function (polyenes), inhibit ergosterol synthesis (allylamines, thiocarbamates, azole derivatives, morpholines), or interact with microtubules (griseofulvin). Drug resistance has been identified as the major cause of treatment failure among patients treated with flucytosine. A lesion in the UMP-pyrophosphorylase is the most frequent clinical determinant of resistance to 5FC in Candida albicans. Despite extensive use of polyene antibiotics for more than 30 years, emergence of acquired resistance seems not be a significant clinical problem. Polyene-resistant Candida isolates have a marked decrease in their ergosterol content. Acquired resistance to allylamines has not been reported from human pathogens, but, resistant phenotypes have been reported for variants of Saccharomyces cerevisiae and of Ustilago maydis. Tolerance to morpholines is seldom found. Intrinsic resistance to griseofulvin is due to the absence of a prolonged energy-dependent transport system for this antibiotic. Resistance to azole antifungal agents is known to be exceptional, although it does now appear to be increasing in importance in some groups of patients infected with e.g. Candida spp., Histoplasma capsulatum or Cryptococcus neoformans. For example, resistance to fluconazole is emerging in C. albicans, the major agent of oro-pharyngeal candidosis in AIDS patients, after long-term suppressive therapy. In the majority of cases, primary and secondary resistance to fluconazole and cross-resistance to other azole antifungal agents seems to originate from decreased intracellular accumulation of the azoles, which may result from reduced uptake or increased efflux of the molecules. In most C. albicans isolates the decreased intracellular levels can be correlated with enhanced azole efflux, a phenomenon linked to an increase in the amounts of mRNA of a C. albicans ABC transporter gene CDR1 and of a gene (BEN(r) or CaMDR) coding for a transporter belonging to the class of major facilitator multidrug efflux transporters. Not only fluconazole, ketoconazole and itraconazole are substrates for CDR1, terbinafine and amorolfine have also been established as substrates, BEN(r) overexpression only accounts for fluconazole resistance. Other sources of resistance: changes in membrane sterols and phospholipids, altered or overproduced target enzyme(s) and compensatory mutations in the Delta5,6-desaturase.

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The in vitro activities of propolis against 29 strains of dermatophytes were compared with those of terbinafine, itraconazole, ketoconazole, and fluconazole. Minimal inhibitory concentrations (MICs) were determined according to a National Committee for Clinical Laboratory Standards broth microdilution method. Among the systemic antifungals tested, terbinafine was the most potent. Propolis showed important antifungal activity and it merits further investigation as a potentially useful agent for the treatment of dermatophytosis.

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Major depressive disorder affects a substantial percentage of the U.S. population, and can be highly debilitating. Selective serotonin reuptake inhibitors are commonly prescribed to treat depression, but may not be as effective for more severe or persistent depression.

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The content of ursolic acid was found to be 2.66% (w/w) in the SC extract and heavy metal contents along with trace elements were within the prescribed limits as per WHO guidelines. The inhibitory potential of SC extract on RLM was found to be 23.64±1.80%. CYP3A4 and CYP2D6 inhibitory effect of SC and ursolic acid (IC50: 197.49±2.68, 211.45±3.54 and IC50: 229.25±2.52, 212.66±1.26 µg/mL) was less as compared to that known inhibitors, ketoconazole and quinidine respectively.

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At present, the resistance of Saccharomyces in patients with oral fungal infection is not significant, most Saccharomyces albicans are sensitive to fluconazole, ketoconazole and nystatin. The MIC of fluconazole and ketoconazole are lower than nystatin, implying when the clinical effect of nystain is poor, to use an azole antifungal is optional. The MIC is relative to therapeutic effect to some degree, but it is not consistent completely.

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Hospital in-patients in university medical center.

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The pharmacokinetic variables of the parent zopiclone were not significantly affected by gemfibrozil. However, gemfibrozil raised the mean peak plasma concentration (C(max)) of N-oxide-zopiclone (1.6-fold; P<0.001) and that of N-desmethyl-zopiclone (1.2-fold; P<0.001). The mean area under the plasma concentration-time curve (AUC(0)-infinity) values of N-oxide-zopiclone and N-desmethyl-zopiclone were raised 2-fold (P<0.001) and 1.2-fold (P<0.01), respectively. The renal clearance of N-oxide-zopiclone was reduced by 48% by gemfibrozil (P<0.001). The pharmacodynamic effects of zopiclone, measured using psychometric tests, were not affected by gemfibrozil. In vitro, ketoconazole (1 microM) and itraconazole (8 microM) decreased the elimination rate of zopiclone enantiomers by about 65-95%, while montelukast (16 microM), gemfibrozil (200 microM) and sulfaphenazole (10 microM) had no appreciable effect.

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Preoperative immunosuppressive therapy was either cyclosporine A (CyA) alone or in combination with ketoconazole (Group 1; n=18), or azathioprine combined with prednisolone (Group 2; n=7). Surgical excision of residual draining tracts, cryptectomy, and anal sacculectomy were performed. Only dogs with postoperative clinical follow-up exceeding 9 months were retained for the study.

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A 19-year-old male patient with chronic cutaneous leishmania is was treated topically with paromomycin sulphate (15%) and methylbenzethonium chloride (12%) in petrolatum album. After application twice daily for two periods of 32 and 44 days the lesions were completely healed. Previous treatment for 9 months with ketoconazole (400 mg/day) together with the topical application of thiabendazole (2.5%) in base had been unsuccessful. No major side effects were observed after paromomycin sulphate application.

nizoral oitment to buy 2017-11-08

We investigated the metabolism of vitamin D2 to hydroxyvitamin D2 metabolites ((OH)D2) by human placentas ex-utero, adrenal glands ex-vivo and cultured human epidermal keratinocytes and colonic Caco-2 cells, and identified 20(OH)D2, 17,20(OH)₂D2, 1,20(OH)₂D2, 25(OH)D2 and 1,25(OH)₂D2 as products. Inhibition of product formation by 22R-hydroxycholesterol indicated involvement of CYP11A1 in 20- and 17-hydroxylation of vitamin D2, while use of ketoconazole indicated involvement of CYP27B1 in 1α-hydroxylation of products. Studies with purified human CYP11A1 confirmed the ability of this enzyme to convert vitamin D2 to 20(OH)D2 and 17,20(OH)₂D2. In placentas and Caco-2 cells, production of 20(OH)D2 was higher than 25(OH)D2 while in human keratinocytes the production of 20(OH)D2 and 25(OH)D2 were comparable. HaCaT keratinocytes showed high accumulation of 1,20(OH)₂D2 relative to 20(OH)D2 indicating substantial CYP27B1 activity. This is the first in vivo evidence for a novel pathway of vitamin D2 metabolism initiated by CYP11A1 and modified by CYP27B1, with the product profile showing tissue- and cell-type specificity.

nizoral buy online 2016-12-22

African green monkeys (vervets) have been proposed as an alternate species that might allow improved access and provide high-quality pharmacokinetic results comparable with other primates. However, no oral data are available in vervets to evaluate cross-species predictive performance. Therefore, this study was conducted to evaluate the use of the vervet to predict human oral pharmacokinetics and drug interactions. Oral pharmacokinetic studies were conducted in the vervet for eight compounds: phenytoin, moxifloxacin, erythromycin, lidocaine, propranolol, ciprofloxacin, metroprolol, and prednisolone. To assess drug-drug interactions, co-administration experiments were conducted with ketoconazole and either propranolol or erythromycin. In general, the vervet provided similar predictivity for human oral exposure as cynomolgus or rhesus monkeys. In all non-human primates, human exposure to phenytoin would be over-predicted, and erythromycin, lidocaine, and propranolol under-predicted, with good predictivity for the other compounds studied. Furthermore, in the vervet, ketoconazole co-administration resulted in a six-fold increase in exposure to erythromycin, demonstrating proof of concept for drug-drug interaction screening. These data support further exploration of the vervet as an alternate primate species for use in preclinical pharmacokinetic screening.