PMID- 8599114 OWN - NLM STAT- MEDLINE DCOM- 19960425 LR - 20190618 IS - 0036-8075 (Print) IS - 0036-8075 (Linking) VI - 271 IP - 5255 DP - 1996 Mar 15 TI - HIV-1 dynamics in vivo: virion clearance rate, infected cell life-span, and viral generation time. PG - 1582-6 AB - A new mathematical model was used to analyze a detailed set of human immunodeficiency virus-type 1 (HIV-1) viral load data collected from five infected individuals after the administration of a potent inhibitor of HIV-1 protease. Productively infected cells were estimated to have, on average, a life-span of 2.2 days (half-life t 1/2 = 1.6 days), and plasma virions were estimated to have a mean life-span of 0.3 days (t 1/2 = 0.24 days). The estimated average total HIV-1 production was 10.3 x 10(9) virions per day, which is substantially greater than previous minimum estimates. The results also suggest that the minimum duration of the HIV-1 life cycle in vivo is 1.2 days on average, and that the average HIV-1 generation time--defined as the time from release of a virion until it infects another cell and causes the release of a new generation of viral particles--is 2.6 days. These findings on viral dynamics provide not only a kinetic picture of HIV-1 pathogenesis, but also theoretical principles to guide the development of treatment strategies. FAU - Perelson, A S AU - Perelson AS AD - Theoretical Division, Los Alamos National Laboratory, NM 87545, USA. FAU - Neumann, A U AU - Neumann AU FAU - Markowitz, M AU - Markowitz M FAU - Leonard, J M AU - Leonard JM FAU - Ho, D D AU - Ho DD LA - eng GR - AI27742/AI/NIAID NIH HHS/United States GR - N01 AI45218/AI/NIAID NIH HHS/United States GR - RR06555/RR/NCRR NIH HHS/United States GR - etc. PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Antiviral Agents) RN - 0 (HIV Protease Inhibitors) RN - 0 (RNA, Viral) RN - 0 (Thiazoles) RN - HG18B9YRS7 (Valine) RN - O3J8G9O825 (Ritonavir) SB - IM MH - Antiviral Agents/administration & dosage/therapeutic use MH - CD4 Lymphocyte Count MH - CD4-Positive T-Lymphocytes/*cytology/*virology MH - Cell Survival MH - HIV Infections/drug therapy/*virology MH - HIV Protease Inhibitors/administration & dosage/therapeutic use MH - HIV-1/drug effects/*physiology MH - Half-Life MH - Humans MH - Kinetics MH - Models, Biological MH - RNA, Viral/blood MH - Regression Analysis MH - Ritonavir MH - Thiazoles/administration & dosage/therapeutic use MH - Valine/administration & dosage/analogs & derivatives/therapeutic use MH - Viremia MH - Virion/drug effects/*physiology MH - Virus Replication EDAT- 1996/03/15 00:00 MHDA- 1996/03/15 00:01 CRDT- 1996/03/15 00:00 PHST- 1996/03/15 00:00 [pubmed] PHST- 1996/03/15 00:01 [medline] PHST- 1996/03/15 00:00 [entrez] AID - 10.1126/science.271.5255.1582 [doi] PST - ppublish SO - Science. 1996 Mar 15;271(5255):1582-6. doi: 10.1126/science.271.5255.1582.