Activation of tumor necrosis factor — α system in HIV-1 infection: Association with markers of immune activation
- 1 January 1995
- journal article
- research article
- Published by Springer Nature in Infection
- Vol. 23 (1) , 9-15
- https://doi.org/10.1007/bf01710050
Abstract
The relationships between serum levels of soluble tumor necrosis factor receptors (sTNFRs) and other prognostic and immunological parameters in different immunological subgroups of 64 HIV-1 infected patients were studied. In the patient group as a whole, the raised serum levels of sTNFRs were significantly inversely correlated to the numbers of CD4+ and CD8+ lymphocytes and significantly positively correlated with serum levels of neopterin, HIV-1 p24 antigen and the soluble CD8/CD8+ lymphocyte ratio. However, when the patients were classified into three separate immunological subgroups according to the numbers of CD4+ lymphocytes, only serum levels of neopterin were significantly correlated to levels of sTNFRs in all the defined immunological subgroups. These results indicate that HIV-1 infection is associated with a persistent and chronic immune activation in the TNF system manifested by raised serum levels of sTNFRs, which may reflect sustained activation of the immune system particularly in monocytes/macrophages. Further, these results confirm that, when comparing immunological and virological parameters in HIV-1 infection, different results may be obtained in different immunological subgroups of patients. Die Beziehung zwischen den Spiegeln von löslichem Tumornekrosefaktor-Rezeptor (sTNFR) und anderen prognostischen und immunologischen Parametern wurde in verschiedenen immunologischen Untergruppen von 64 HIV-1 infizierten Patienten untersucht. In der Gesamtgruppe bestand eine signifikante, inverse Korrelation zwischen erhöhten sTNFR-Spiegeln und der Zahl CD4+ und CD8+ Lymphozyten sowie eine signifikante positive Korrelation zu den Serumspiegeln von HIV-1 p24-Antigen, Neopterin und dem Quotienten aus löslichem CD8 und CD8+ Lymphozyten. Bei Unterteilung der Patienten nach CD4+ Zahlen in drei verschiedene immunologische Gruppen bestand in allen definierten immunologischen Untergruppen nur noch eine signifikante Korrelation zwischen Neopterin und dem sTNFR-Spiegel. Diese Ergebnisse lassen annehmen, daß die Infektion mit HIV-1 mit einer persistierenden und chronischen Immunaktivierung des TNF Systems einhergeht, die sich in erhöhten Serumspiegeln von sTNFR zeigt und Ausdruck einer Immunaktivierung, vor allem des Monozyten/Makrophagen-Systems ist. Die Ergebnisse bestätigen außerdem, daß sich beim Vergleich immunologischer und virologischer Parameter der HIV-1 Infektion in den verschiedenen immunologischen Untergruppen der Patienten unterschiedliche Ergebnisse herausstellen können.Keywords
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