PMID- 12508143 OWN - NLM STAT- MEDLINE DCOM- 20030130 LR - 20171116 IS - 0022-1899 (Print) IS - 0022-1899 (Linking) VI - 187 IP - 1 DP - 2003 Jan 1 TI - Influence of plasma viremia on defects in number and immunophenotype of blood dendritic cell subsets in human immunodeficiency virus 1-infected individuals. PG - 26-37 AB - Dendritic cells (DCs) are postulated to be involved in transmission of human immunodeficiency virus (HIV) type 1 to T cells and in stimulation of HIV-1-specific cell-mediated immunity. Blood DCs have been categorized as myeloid (mDC) and plasmacytoid (pDC) subsets, on the basis of differences in phenotype and function. Blood DC subset numbers and expression of costimulatory molecules and HIV-1 coreceptors on DCs were measured in the blood of treated and untreated HIV-1-infected subjects and uninfected control subjects. Absolute numbers of mDCs and pDCs were lower in HIV-1-infected subjects than in control subjects, most significantly in those with active HIV-1 replication. Increased surface expression of costimulatory molecules was observed on both DC subsets in subjects with HIV-1 viremia. Highly active antiretroviral therapy suppression of plasma viremia resulted in increases in blood DC numbers and decreases in DC costimulatory molecule expression. These findings further define the impact of HIV-1 replication on blood DC subsets in vivo. FAU - Barron, Michelle A AU - Barron MA AD - Division of Infectious Diseases, Department of Medicine, University of Colorado Health Sciences Center, Denver 80262, USA. FAU - Blyveis, Naomi AU - Blyveis N FAU - Palmer, Brent E AU - Palmer BE FAU - MaWhinney, Samantha AU - MaWhinney S FAU - Wilson, Cara C AU - Wilson CC LA - eng GR - AI-07447 5T32/AI/NIAID NIH HHS/United States GR - K08 AI-01459/AI/NIAID NIH HHS/United States GR - P01 AI-43664/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20021213 PL - United States TA - J Infect Dis JT - The Journal of infectious diseases JID - 0413675 RN - 0 (Antigens, CD) RN - 0 (B7-2 Antigen) RN - 0 (CD40 Antigens) RN - 0 (CD86 protein, human) RN - 0 (HLA-DR Antigens) RN - 0 (Membrane Glycoproteins) RN - 0 (RNA, Viral) RN - 0 (Receptors, CCR5) RN - 0 (Receptors, CXCR4) SB - IM MH - Acquired Immunodeficiency Syndrome/drug therapy/*immunology MH - Adult MH - Antigens, CD/blood MH - Antiretroviral Therapy, Highly Active MH - B7-2 Antigen MH - CD40 Antigens/blood MH - Dendritic Cells/*immunology MH - *HIV-1 MH - HLA-DR Antigens/blood MH - Humans MH - Immunophenotyping MH - Longitudinal Studies MH - Membrane Glycoproteins/blood MH - Middle Aged MH - RNA, Viral/blood MH - Receptors, CCR5/blood MH - Receptors, CXCR4/blood MH - T-Lymphocytes/immunology MH - Viremia/*immunology EDAT- 2003/01/01 04:00 MHDA- 2003/01/31 04:00 CRDT- 2003/01/01 04:00 PHST- 2002/04/17 00:00 [received] PHST- 2002/09/10 00:00 [revised] PHST- 2003/01/01 04:00 [pubmed] PHST- 2003/01/31 04:00 [medline] PHST- 2003/01/01 04:00 [entrez] AID - JID020432 [pii] AID - 10.1086/345957 [doi] PST - ppublish SO - J Infect Dis. 2003 Jan 1;187(1):26-37. doi: 10.1086/345957. Epub 2002 Dec 13.