9-(2-Phosphonylmethoxyethyl)adenine in the treatment of murine acquired immunodeficiency disease and opportunistic herpes simplex virus infections.

Antimicrobial Agents and Chemotherapy
J D GangemiH K Hochkeppel

Abstract

The murine model of acquired immunodeficiency disease was used to evaluate both the antiretroviral and antiherpetic activities of the acyclic nucleotide analog 9-(2-phosphonylmethoxyethyl)adenine (PMEA). The antiretroviral activity of PMEA was compared with that of azidothymidine (AZT) in mice receiving the drug either immediately after infection or at late times in disease progression. Both AZT (oral, 30 mg/kg) and PMEA (parenteral, 25 and 5 mg/kg) were effective in slowing the development of disease when administered daily beginning on the day of infection. In contrast, neither drug alone was effective in modifying disease outcome when administered several weeks after viral infection. Human recombinant alpha interferon (rhuIFN alpha-B/D at 5 x 10(7) U/kg) was also ineffective when administered late in the course of disease. However, when administered in combination, both alpha interferon and PMEA (25 mg/kg) were able to suppress disease progression even when treatment was initiated as late as 3 weeks postinfection. Mice that were immunocompromised due to LP-BM5 virus infection were highly susceptible to acute (lethal) infection with herpes simplex virus type 1, whereas their immunocompetent littermates were not. PMEA was as e...Continue Reading

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Apr 1, 1993·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·J NeytsE De Clercq
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