aphidicolin and Herpes-Simplex

Acyclovir (ACV)-resistant herpes simplex virus type 2 (HSV-2) was isolated from a patient with acquired immunodeficiency syndrome after long-term but intermittent ACV therapy. These thymidine kinase-defective isolates were sensitive in vitro to foscarnet. While combined therapy with ACV and interferon produced only partial clinical improvement, the in vitro effect of this combination against an ACV-resistant isolate from the patient was strongly synergistic. A short course (10-12 days) of intravenous foscarnet controlled severe ulceration, and clinical improvement lasted 6 months. After recurrence and further courses of foscarnet, however, the patient responded poorly, and subsequent HSV isolates were resistant to both ACV and foscarnet and hypersensitive to aphidicolin.

Topics: Acquired Immunodeficiency Syndrome; Acyclovir; Adult; Antiviral Agents; Aphidicolin; Deoxyguanosine; Diterpenes; Drug Resistance, Microbial; Female; Foscarnet; Herpes Simplex; Humans; Phosphonoacetic Acid; Simplexvirus