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Published on: October 12, 2018
Gut Microbiota in Human Immunodeficiency Virus-Infected Individuals Linked to Coronary Heart Disease
Jan Kehrmann1, Jannis Menzel1, Mohammadkarim Saeedghalati2
1Institute of Medical Microbiology, University Hospital Essen.
Insights
Human immunodeficiency virus (HIV) infection impacts gut microbiota diversity, influencing coronary heart disease (CHD) risk. Microbiome community structures, not just species, may aid CHD risk assessment in HIV patients.
Area of Science:
- Microbiome research
- Cardiovascular health in infectious diseases
- Human virology
Background:
- Human immunodeficiency virus (HIV) infection is a known risk factor for coronary heart disease (CHD).
- HIV infection is associated with alterations in the gut microbiota composition and function.
Purpose of the Study:
- To investigate the association between gut microbiota and coronary heart disease (CHD) in individuals with HIV.
- To identify specific microbial patterns linked to CHD in the HIV-infected population.
Main Methods:
- Analysis of gut microbiota composition in 60 HIV-infected individuals (30 with CHD, 30 without CHD).
- Comparison of alpha-diversity, beta-diversity, and bacterial genus co-occurrence networks between groups.
- Multidimensional scaling to identify distinct microbiome clusters.
Main Results:
- Gut microbiota associated with CHD exhibited lower alpha-diversity.
- Distinct co-occurrence networks of bacterial genera were observed between CHD+ and CHD- individuals.
- Two microbiome clusters emerged, dominated by Prevotella or Bacteroides, with significant differences in 49 genera and distinct demographic profiles (e.g., sexual behavior).
Conclusions:
- Gut microbiota community structures, rather than individual species, may be valuable for assessing CHD risk in HIV-infected individuals.
- Sexual behavior is a significant factor influencing gut microbiota diversity and should be considered in future HIV-related CHD research.
Background:
Human immunodeficiency virus (HIV) infection is an independent risk factor for coronary heart disease (CHD) and is associated with perturbation of the gut microbiota.
Methods:
We analyzed gut microbiota in 30 HIV-infected individuals with CHD (CHD+) and 30 without CHD (CHD-) of the HIV-HEART study group.
Results:
Gut microbiota linked to CHD was associated with lower α-diversity. Despite insignificant differences in β-diversity, co-occurrence networks of bacterial genera clearly diverged between CHD+ and CHD- individuals. Multidimensional scaling separated HIV-infected individuals into 2 microbiome clusters, dominated by the genus Prevotella or Bacteroides. The relative abundance of 49 other genera was significantly different between both clusters. The Prevotella-rich cluster was largely composed of men who have sex with men (MSM) (97%), whereas the Bacteroides-rich cluster comprised both MSM (45%) and heterosexual individuals (55%). MSM of the Bacteroides-rich cluster were characterized by reduced α-diversity, advanced immunological HIV stage, longer antiretroviral therapy with more ART regimens, and longer use of protease inhibitors, compared with Prevotella-rich MSM.
Conclusions:
Community structures of gut microbiota rather than individual species might facilitate risk assessment of CHD in HIV-infected individuals. Sexual behavior appears to be an important factor affecting gut microbiota β-diversity and should be considered in future studies.
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