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Cancidas: profile and news
Merck Announces Strong Full-Year and Fourth-Quarter 2005 Earnings ... Jan 31, 2006 Read the factors that are changing the Antifungals Market today ... Jan 25, 2006 Merck Announces Initial Steps In Global Restructuring Program Nov 28, 2005 Merck Announces New Unisured Discount Program Targeted to More ... Oct 7, 2005 Merck to invest $15 mn to beef up marketing Sep 27, 2005 KAI Pharmaceuticals Announces Appointment of Chief Medical Officer ... Aug 31, 2005 Merck re-enters India; product launches in pipeline Jul 22, 2005 Merck re-enters Indian market Jul 22, 2005 Merck re-enters India with $15 mn investment:- Jul 22, 2005 Merck Announces Second-Quarter 2005 Earnings Per Share (EPS) of 33 ... Jul 21, 2005 Merck Announces First-Quarter 2005 Earnings Per Share -EPS- of 62 ... Apr 21, 2005 Merck Announces New Unisured Discount Program Targeted to More ... Apr 19, 2005 14-month-old baby Massimo needs help to stay alive waiting for a ... Mar 5, 2005 Other information Indication For the treatment of Esophageal Candidiasis and Invasive Aspergillosis in patients who are refractory to or intolerant of other therapies Pharmacology Caspofungin is an antifungal drug, and belongs to a new class termed the echinocandins. It is used to treat Aspergillus and Candida infection, and works by inhibiting cell wall synthesis. Antifungals in the echinocandin class inhibit the synthesis of glucan in the cell wall, probably via the enzyme 1,3-beta glucan synthase. There is a potential for resistance development to occur, however in vitro resistance development to Caspofungin by Aspergillus species has not been studied. Mechanism Of Action Caspofungin inhibits the synthesis of b (1,3)-D-glucan, an essential component of the cell wall of Aspergillus species and Candida species. b (1,3)-D-glucan is not present in mammalian cells. The primary target is Beta-(1,3)-glucan synthase. Drug Category Antifungals; Antifungals; ATC:J02AX04 Brand Names/Synonyms Cancidas; Caspofungin; Caspofungin Acetate; M991; MK-0991 Dosage Forms POWDER FOR SOLUTION Absorption 92% tissue distribution within 36-48 hours after IV infusion Interactions -->Interactions for Caspofungin: Studies in vitro show that caspofungin acetate is not an inhibitor of any enzyme in the cytochrome P450 (CYP) system. In clinical studies, caspofungin did not induce the CYP3A4 metabolism of other drugs. Caspofungin is not a substrate for P-glycoprotein and is a poor substrate for cytochrome P450 enzymes. Clinical studies in healthy volunteers show that the pharmacokinetics of CANCIDAS are not altered by itraconazole, amphotericin B, mycophenolate, nelfinavir, or tacrolimus. CANCIDAS has no effect on the pharmacokinetics of itraconazole, amphotericin B, or the active metabolite of mycophenolate. CANCIDAS reduced the blood AUC0-12 of tacrolimus (FK-506, PrografÒ3) by approximately 20%, peak blood concentration (Cmax) by 16%, and 12-hour blood concentration (C12hr) by 26% in healthy subjects when tacrolimus (2 doses of 0.1 mg/kg 12 hours apart) was administered on the 10th day of CANCIDAS 70 mg daily, as compared to results from a control period in which tacrolimus was administered alone. For patients receiving both therapies, standard monitoring of tacrolimus blood concentrations and appropriate tacrolimus dosage adjustments are recommended. In two clinical studies, cyclosporine (one 4 mg/kg dose or two 3 mg/kg doses) increased the AUC of caspofungin by approximately 35%. CANCIDAS did not increase the plasma levels of cyclosporine. There were transient increases in liver ALT and AST when CANCIDAS and cyclosporine were co-administered. A drug-drug interaction study with rifampin in healthy volunteers has shown a 30% decrease in caspofungin trough concentrations. Patients on rifampin should receive 70 mg of CANCIDAS daily. In addition, results from regression analyses of patient pharmacokinetic data suggest that co-administration of other inducers of drug clearance (efavirenz, nevirapine, phenytoin, dexamethasone, or carbamazepine) with CANCIDAS may result in clinically meaningful reductions in caspofungin concentrations. It is not known which drug clearance mechanism involved in caspofungin disposition may be inducible. When CANCIDAS is co-administered with inducers of drug clearance, such as efavirenz, nevirapine, phenytoin, dexamethasone, or carbamazepine, use of a daily dose of 70 mg of CANCIDAS should be considered. |
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