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Intestinal Microbiota, Microbial Translocation, and Systemic Inflammation in Chronic HIV Infection
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Intestinal Microbiota, Microbial Translocation, and Systemic Inflammation in Chronic HIV Infection
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Journal Article
Intestinal Microbiota, Microbial Translocation, and Systemic Inflammation in Chronic HIV Infection
2015
Overview
Background. Despite effective antiretroviral therapy (ART), patients with chronic human immunodeficiency virus (HIV) infection have increased microbial translocation and systemic inflammation. Alterations in the intestinal microbiota may play a role in microbial translocation and inflammation. Methods. We profiled the fecal microbiota by pyrosequencing the gene encoding 16S ribosomal RNA (rRNA) and measured markers of microbial translocation and systemic inflammation in 21 patients who had chronic HIV infection and were receiving suppressive ART (cases) and 16 HIV-uninfected controls. Results. The fecal microbial community composition was significantly different between cases and controls. The relative abundance of Proteobacteria, Gammaproteobacteria, Enterobacteriales, Enterobacteriaceae, Erysipelotrichi, Erysipelotrichales, Erysipelotrichaceae, and Barnesiella was significantly enriched in cases, whereas that of Rikenellaceae and Alistipes was depleted. The plasma soluble CD 14 level (sCD14) was significantly higher and the endotoxin core immunoglobulin M (IgM) level lower in cases, compared with controls. There were significant positive correlations between the relative abundances of Enterobacteriales and Enterobacteriaceae and the sCD14 level; the relative abundances of Gammaproteobacteria, Enterobacteriales, and Enterobacteriaceae and the interleukin 1β(IL-Iβ) level; the relative abundances of Enterobacteriales and Enterobacteriaceae and the interferon γ level; and the relative abundances of Erysipelotrichi and Barnesiella and the TNF-α level. There were negative correlations between endotoxin core IgM and IL-Iβ levels. Conclusions. Patients who have chronic HIV infection and are receiving suppressive ART display intestinal dysbiosis associated with increased microbial translocation and significant associations between specific taxa and markers of microbial translocation and systemic inflammation. This was an exploratory study, the findings of which need to be confirmed.
Publisher
Oxford University Press
Subject
Antiretroviral Therapy, Highly Active - adverse effects
/ Antiretroviral Therapy, Highly Active - methods
/ Bacterial Translocation - genetics
/ Bacterial Translocation - physiology
/ HIV Infections - drug therapy
/ HIV Infections - microbiology
/ HIV/AIDS
/ Human immunodeficiency virus
/ Humans
/ Lipopolysaccharide Receptors - blood
