Induction of interleukin-10 by HIV antigens in peripheral mononuclear cells of health care workers after occupational exposure to HIV-1-positive blood

Induction of interleukin-10 by HIV antigens in peripheral mononuclear cells of health care workers after occupational exposure to HIV-1-positive blood

Author Rodrigues, Denise do Socorro da Silva Autor UNIFESP Google Scholar
Brunialti, Milena Karina Coló Autor UNIFESP Google Scholar
Medeiros, Eduardo Alexandrino Servolo de Autor UNIFESP Google Scholar
Diaz, Ricardo Sobhie Autor UNIFESP Google Scholar
Turcato Junior, Gilberto Autor UNIFESP Google Scholar
Salomão, Reinaldo Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Evaluation of HIV-induced IL-2 production by peripheral blood mononuclear cells (PBMC) and HIV-specific T helper and cytotoxic T lymphocyte (CTL) responses in health care workers (HCW) occupationally exposed to HIV reveals a high rate of response to HIV among non-seroconverters. IL-10 is also known to interfere with HIV infection in vitro. To evaluate the induction of IL-10 by HIV antigens in HCW occupationally exposed to HIV, 18 HCW with percutaneous injury were enrolled in this study, 9 of them exposed to HIV-contaminated blood, and 9 exposed to HIV-negative blood. PBMC were incubated on plates coated with HIV-1 antigens, and IL-10 was measured in supernatants by ELISA. Five of nine HCW exposed to HIV-contaminated blood presented HIV-induced IL-10. Two of nine HCW exposed to HIV-negative source patients also had detectable levels of HIV-induced IL-10, one of them in the sample obtained on the day of accidental exposure. There was a relationship between the type of device involved in injury and IL-10 production. Individuals exposed to hollow needles or scalpels presented HIV-induced IL-10, whereas those exposed to solid needles and to digital puncture did not, suggesting a relationship between infectious load and IL-10. Although occupational exposure to HIV leads to a low rate of seroconversion, these individuals can develop an antigen-specific immune response characterized in our study by induction of IL-10 in PBMC in vitro.
Keywords HIV-1
Interleukin-10
Needlestick injury
Occupational exposure
Health care worker
Language English
Date 2002-06-01
Published in Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 35, n. 6, p. 697-701, 2002.
ISSN 0100-879X (Sherpa/Romeo, impact factor)
Publisher Associação Brasileira de Divulgação Científica
Extent 697-701
Origin http://dx.doi.org/10.1590/S0100-879X2002000600010
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000176452400010
SciELO ID S0100-879X2002000600010 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/1459

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