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Altered gut microbiome composition in HIV infection: causes, effects and potential intervention.

Altered gut microbiome composition in HIV infection: causes, effects and potential intervention.
Author Information (click to view)

Bandera A, De Benedetto I, Bozzi G, Gori A,


Bandera A, De Benedetto I, Bozzi G, Gori A, (click to view)

Bandera A, De Benedetto I, Bozzi G, Gori A,

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Current opinion in HIV and AIDS 2017 10 17() doi 10.1097/COH.0000000000000429

Abstract
PURPOSE OF REVIEW
Aim of this review is to summarize the alterations occurring in gut microbiome composition after HIV infection, and to underline how intestinal dysbiosis can affect immune homeostasis, immune recovery, and persisting immune activation under antiretroviral therapy (ART). Many interventions have been suggested, mostly with inconclusive results.

RECENT FINDINGS
Recent evidence showed that gut microbiota from HIV-infected patients harbor reproducible differences compared to uninfected individuals. In this line, there is growing evidence that alterations in gut ecology during HIV infection correlate with persistence of immune defects and chronic inflammation. A reduced microbial diversity in feces of HIV-infected patients is highly associated with microbial translocation and monocyte activation markers; moreover, changes in mucosa-associated bacteria correlate with inflammation and T-cell activation.

SUMMARY
Studying the human host-microbiota interaction suggests that the consequences of HIV infection on microbial composition can influence immune status in HIV patients. ART induces microbiome changes that are independent of HIV infection, and some imply that ART may enhance dysbiosis. Studies and trials evaluated the effects of administering probiotics and prebiotics, finding a potential benefit on inflammation markers and immune cell activation. Emerging data on fecal microbial transplantation need to be assessed with further studies.

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