PMID- 8948369 OWN - NLM STAT- MEDLINE DCOM- 19961220 LR - 20191024 IS - 1077-9450 (Print) IS - 1077-9450 (Linking) VI - 13 IP - 4 DP - 1996 Dec 1 TI - CD8+ lymphocyte responses to antiretroviral therapy of HIV infection. PG - 320-6 AB - CD8+ T lymphocytes may mediate important host responses to human immunodeficiency virus (HIV) infection by human leukocyte antigen (HLA)-restricted cytotoxicity and production of soluble HIV suppressor factors. CD8+ lymphocytes are also important for the suppression of many latent pathogens responsible for opportunistic disease in HIV-infected patients. There has been no systematic analysis of the responses of CD8+ lymphocyte counts to antiretroviral therapy. We compared CD8+ lymphocyte responses in seven trials of nucleoside or non-nucleoside analog reverse transcriptase inhibitors and in two trials of ritonavir, a HIV protease inhibitor. Nucleoside analog and non-nucleoside analog reverse transcriptase inhibitor monotherapy resulted in no substantial changes in CD8+ counts relative to baseline or placebo. Combination nucleoside analog therapy resulted in variable peak responses (-145 to +240 cells/mm3), which remained significantly above baseline for 0 to 12 weeks. In contrast, ritonavir monotherapy caused a peak increase of 892 CD8+ cells/mm3, which remained significantly above baseline for 32 weeks. There was a significant correlation (Rs 0.61, p = 0.01) between the peak CD4+ cell and CD8+ responses to each therapy, but no significant correlation between the peak viral load responses and peak CD8+ cell responses. These findings suggest that the greater CD8+ response seen with ritonavir may be due to its specific inhibition of HIV protease and also that the CD8+ response is dependent on new CD4+ cell production. The CD8+ lymphocyte proliferation observed with protease inhibitor therapy could result in improved suppression of HIV replication by the immune system and should be confirmed in a prospective trial comparing protease inhibitors with both nucleoside and non-nucleoside analog therapies. FAU - Carr, A AU - Carr A AD - HIV Medicine Unit, St. Vincent's Hospital, Sydney, Australia. FAU - Emery, S AU - Emery S FAU - Kelleher, A AU - Kelleher A FAU - Law, M AU - Law M FAU - Cooper, D A AU - Cooper DA LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - J Acquir Immune Defic Syndr Hum Retrovirol JT - Journal of acquired immune deficiency syndromes and human retrovirology : official publication of the International Retrovirology Association JID - 9501482 RN - 0 (Acetamides) RN - 0 (Acetophenones) RN - 0 (HIV Protease Inhibitors) RN - 0 (Pyridines) RN - 0 (Reverse Transcriptase Inhibitors) RN - 2T8Q726O95 (Lamivudine) RN - 3S1R1LZ09H (loviride) RN - 4B9XT59T7S (Zidovudine) RN - 6L3XT8CB3I (Zalcitabine) RN - CI9X00489L (2',3'-dideoxycytidinene) RN - EC 2.7.7.49 (HIV Reverse Transcriptase) RN - K3GDH6OH08 (Didanosine) RN - O3J8G9O825 (Ritonavir) SB - IM CIN - J Acquir Immune Defic Syndr Hum Retrovirol. 1997 Jun 1;15(2):176-7. PMID: 9241121 CIN - J Acquir Immune Defic Syndr Hum Retrovirol. 1998 Aug 1;18(4):391-3. PMID: 9704947 MH - Acetamides/therapeutic use MH - Acetophenones/therapeutic use MH - CD4-Positive T-Lymphocytes/immunology MH - CD8-Positive T-Lymphocytes/*immunology MH - Didanosine/therapeutic use MH - Drug Therapy, Combination MH - HIV Infections/drug therapy/*immunology/virology MH - HIV Protease Inhibitors/*therapeutic use MH - HIV Reverse Transcriptase/antagonists & inhibitors MH - Humans MH - Lamivudine/therapeutic use MH - Lymphocyte Count MH - Pyridines/therapeutic use MH - Reverse Transcriptase Inhibitors/*therapeutic use MH - Ritonavir/therapeutic use MH - Viral Load MH - Zalcitabine/analogs & derivatives/therapeutic use MH - Zidovudine/therapeutic use EDAT- 1996/12/01 00:00 MHDA- 1996/12/01 00:01 CRDT- 1996/12/01 00:00 PHST- 1996/12/01 00:00 [pubmed] PHST- 1996/12/01 00:01 [medline] PHST- 1996/12/01 00:00 [entrez] AID - 10.1097/00042560-199612010-00004 [doi] PST - ppublish SO - J Acquir Immune Defic Syndr Hum Retrovirol. 1996 Dec 1;13(4):320-6. doi: 10.1097/00042560-199612010-00004.