Antiretroviral-Related Adipocyte Dysfunction and Lipodystrophy in HIV-Infected Patients: Alteration of the PPAR -Dependent PathwaysReport as inadecuate




Antiretroviral-Related Adipocyte Dysfunction and Lipodystrophy in HIV-Infected Patients: Alteration of the PPAR -Dependent Pathways - Download this document for free, or read online. Document in PDF available to download.

PPAR ResearchVolume 2009 2009, Article ID 507141, 8 pages

Review Article

Institut national de la santé et de la recherche médicale Inserm, UMRS 893, 75012 Paris, France

Faculté de Médecine, Université Pierre et Marie Curie UPMC-Paris 6, 75012 Paris, France

Assistance Publique - Hôpitaux de Paris AP-HP, Hôpital Tenon, Service de Biochimie et Hormonologie, 75020 Paris, France

Received 8 August 2008; Accepted 9 October 2008

Academic Editor: Lawrence Serfaty

Copyright © 2009 Martine Caron et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lipodystrophy and metabolic alterations are major complications of antiretroviral therapy in HIV-infected patients. In vitro studies using cultured murine and human adipocytes revealed that some protease inhibitors PIs and nucleoside reverse transcriptase inhibitors NRTIs were implicated to a different extent in adipose cell dysfunction and that a chronic incubation with some PIs decreased mRNA and protein expression of PPAR . Defective lamin A maturation linked to PI inhibitory activity could impede the nuclear translocation of SREBP1c, therefore, reducing PPAR expression. Adipose cell function was partially restored by the PPAR agonists, thiazolidinediones. Adverse effects of PIs and NRTIs have also been reported in macrophages, a cell type that coexists with, and modulates, adipocyte function in fat tissue. In HIV-infected patients under ART, a decreased expression of PPAR and of PPAR -related genes was observed in adipose tissue, these anomalies being more severe in patients with ART-induced lipoatrophy. Altered PPAR expression was reversed in patients stopping PIs. Treatment of patients with agonists of PPAR could improve, at least partially, the subcutaneous lipoatrophy. These data indicate that decreased PPAR expression and PPAR -related function, resulting from ART-induced adipose tissue toxicity, play a central role in HIV-related lipoatrophy and metabolic consequences.





Author: Martine Caron, Corinne Vigouroux, Jean-Philippe Bastard, and Jacqueline Capeau

Source: https://www.hindawi.com/



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