title: Detection of human herpesvirus 7 DNA in peripheral blood reflects mainly CD4+ cell count in patients infected with HIV.
abstract: The opportunistic behavior and the potential interactions of human herpesvirus 7 (HHV-7) with human immunodeficiency virus (HIV)-1 in HIV-1-infected patients were investigated in comparison with HHV-6, another human roseolovirus. Roseolovirus DNAs were detected and quantified in peripheral blood mononuclear cells (PBMCs) from 198 HIV-seronegative healthy blood donors, 38 HIV-1-infected patients classified as long-term non-progressors, and 99 HIV-1-infected patients classified as progressors. The rate of HHV-7 DNA detection was higher in healthy donors (78%) than in long-term non-progressors (47%; P = 0.0003) or in progressors (52%; P < 0.0001). HHV-7 cell load was higher in healthy donors (median: 212 EqCop/10(6) PBMCs) and in long-term non-progressors (median: 105 EqCop/10(6) PBMCs) than in progressors (median: 48 EqCop/10(6) PBMCs; P < 0.0001 and P = 0.015, respectively). Among progressors, HHV-7 detection was correlated positively with the CD4(+) T-lymphocyte count (P = 0.028). Neither HHV-7 detection rate nor cell load was correlated with the HIV-1 plasma load. As a whole, HHV-6 detection rate and cell load were lower than the HHV-7 counterparts, albeit exhibiting similar differences between healthy donors, long-term non-progressors, and progressors. In conclusion, HHV-7 infection does not appear to be stimulated by HIV-1 infection, nor interact with it. Rather, HHV-7 detection rate and cell load reflect CD4(+) T-lymphocyte count, with higher values in healthy donors and long-term non-progressors than in progressors.
authors.affiliation: Laboratoire de Virologie, UPRES EA 2387, Groupe Hospitalier Pitié-Salpêtrière, Paris, France. david.boutolleau@psl.ap-hop-paris.fr
authors.forename: David
authors.initials: D
authors.lastname: Boutolleau
authors.forename: Olivia
authors.initials: O
authors.lastname: Bonduelle
authors.forename: Amélie
authors.initials: A
authors.lastname: Sabard
authors.forename: Laure
authors.initials: L
authors.lastname: Devers
authors.forename: Henri
authors.initials: H
authors.lastname: Agut
authors.forename: Agnès
authors.initials: A
authors.lastname: Gautheret-Dejean
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000821:virology*; D000328:Adult; D018791:CD4 Lymphocyte Count; D003430:Cross-Sectional Studies; D004279:DNA, Viral / Q000097:blood*; D005602:France; D015658:HIV Infections / Q000150:complications* / Q000276:immunology*; D020276:HIV Long-Term Survivors; D015497:HIV-1; D015654:Herpesvirus 6, Human / Q000302:isolation & purification; D016199:Herpesvirus 7, Human / Q000302:isolation & purification*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000821:virology; D019349:Roseolovirus Infections / Q000821:virology*; D019562:Viral Load; D014766:Viremia
chemical_list: D004279:DNA, Viral