Document 3062 DOCN M94A3062 TI Course of CD8+CD38+ lymphocyte subset during continuous AZT-ddC combination therapy in 25 HIV infected individuals. DT 9412 AU Holmgren C; Knechten H; Praxiszentrum, Aachen, Germany. SO Int Conf AIDS. 1994 Aug 7-12;10(1):162 (abstract no. PB0073). Unique Identifier : AIDSLINE ICA10/94369513 AB INTRODUCTION: The CD8+CD38+ lymphocyte subset is a marker for progression of HIV infection but there have been few reports about the course of this subset during antiretroviral combination therapy. Thus, development of this subset may indicate response to therapy or progression of HIV infection. OBJECTIVE: To evaluate the course of CD8+CD38+ lymphocyte subset during continuous AZT-ddC combination therapy as a possible predictive marker for response to antiretroviral AZT-ddC combination therapy or progression of HIV disease. METHODS: In an ongoing study CD8+CD38+ lymphocyte subsets of 25 HIV infected individuals on AZT-ddC combination therapy were measured in two color flow cytometry (Becton Dickinson FACScan and IMK Plus reagent kit). Measurements were carried out monthly starting six months before beginning the therapy. Patients on therapy were classified as responders or non-responders according to further immunological and clinical parameters and analysed separately. RESULTS: In about 200 tests in 25 HIV patients there was no clear evidence for course of CD8+CD38+ lymphocytes to indicate response to AZT-ddC combination therapy or progression of HIV infection. DISCUSSION AND CONCLUSION: Objective and practicable routine parameters for response to AZT-ddC combination therapy are not satisfactory. Reports about the course of CD8+CD38+ lymphocyte subsets during this treatment have been scarse. According to our results on a small group of patients the CD8+CD38+ lymphocyte subset does not seem to be an additional or supplementary predictive marker for response to AZT-ddC combination therapy. Further studies on more individuals has to be carried out to widen results. Pre-treatment and stage of HIVdisease would be interesting points of views to be taken into consideration. DE Antigens, CD8/*BLOOD Antigens, Differentiation/*BLOOD Drug Therapy, Combination Flow Cytometry Follow-Up Studies Human HIV Infections/*DRUG THERAPY/IMMUNOLOGY Leukocyte Count T-Lymphocyte Subsets/*DRUG EFFECTS/IMMUNOLOGY Zalcitabine/*ADMINISTRATION & DOSAGE Zidovudine/*ADMINISTRATION & DOSAGE MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).