Serum IL-10 levels in HIV-positive subjects: Correlation with CDC stages

F. Ameglio, P. Cordiali Fei, M. Solmone, C. Bonifati, G. Prignano, A. Giglio, F. Caprilli, G. Gentili, M. R. Capobianchi

Research output: Contribution to journalArticle

Abstract

HIV-1 infection and the HIV gpl20 have been shown to induce an IL-10 increase in cultured peripheral blood mononuclear cells. Furthermore, the expression of this cytokine has been reported to increase in lymphnodes of infected patients along the disease course, and a shift from the TH-1 towards the TH-0/TH-2 phenotypes (with subsequent IL-10 release) has been hypothesized to underly AIDS progression. In this study the serum IL-10 levels found in 30 HIV-negative controls and in 65 HIV-positive patients, untreated with AZT and negative for HBsAg and HCV-Ab have been compared, using a commercial, competitive ELISA method based on a polyclonal anti-IL-10 serum. With this test, HIV-positive sera showed IL-10 levels significantly higher than those found in the controls. In addition the IL-10 levels progressively increased in the subsequent CDC stages, without further changes from the stage III to the stage IV. Accordingly, patients evaluated two times in CDC stage II with a time interval of at least one year, showed significant IL-10 increases, even more pronounced when the same patients passed from CDC stage II to stage III. Furthermore, a significant, negative correlation was observed between the circulating IL-10 levels and the patients' CD4/CD8 ratios. These data may be important from a clinical point of view since IL-10 monitoring could be considered as a surrogate marker for evaluating the disease progression. In addition, several immunological abnormalities present in HIV positive patients, such as the monocyte/macrophage impairment and the hypergammaglobulinemia could be related to the enhanced IL-10 expression.

Original languageEnglish
Pages (from-to)48-52
Number of pages5
JournalJournal of Biological Regulators and Homeostatic Agents
Volume8
Issue number2
Publication statusPublished - 1994

Keywords

  • CDC stages
  • HIV
  • IL-10
  • serum
  • TH-0
  • TH-1
  • TH-2

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Endocrinology
  • Physiology
  • Immunology
  • Medicine (miscellaneous)
  • Endocrinology, Diabetes and Metabolism
  • Physiology (medical)

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