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Devineni D , Gallo JM
Zalcitabine - Clinical Pharmacokinetics and Efficacy
Clinical Pharmacokinetics. 1995 May;28(5) :351-360
PMID: ISI:A1995QX20100002   
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Zalcitabine (ddC) was the first drug to be approved under the US Food and Drug Administration's (FDA's) accelerated drug approval process, Zalcitabine is a potent nucleoside analogue inhibitor of reverse transcriptase used in the treatment of HIV infection. It is approximately 10-fold more potent than zidovudine (AZT) on a molar basis in vitro. Zalcitabine is well absorbed orally and reaches maximal plasma concentrations within 1 to 2 hours. In humans it is mainly eliminated by renal excretion of unchanged drug, and patients with renal failure may exhibit a prolonged half-life, A variety of clinical trials have evaluated the efficacy of zalcitabine based on improved survival and decreased frequency of opportunistic infections and on a surrogate marker of HIV disease, the CD4 count, or the concentration of an antigen associated with HIV, p24. Alternating zalcitabine therapy with zidovudine therapy was associated with increased CD4+ lymphocyte counts and reduced plasma p24 antigen levels, Zalcitabine can cause peripheral neuropathy (in 17 to 31% of patients), which is dose-related and is completely reversible when the drug is discontinued. Zalcitabine will continue to play a role in chemotherapeutic approaches to HIV.
Times Cited: 13 Review QX201 CLIN PHARMACOKINET