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Abdominal Adipose Tissue Is Associated With Alterations in Tryptophan-Kynurenine Metabolism and Markers of Systemic Inflammation in People With Human Immunodeficiency Virus

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DOI

  1. Persistent COVID-19 in an Immunocompromised Patient Temporarily Responsive to Two Courses of Remdesivir Therapy

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Interstitial lung abnormalities in people with HIV infection and uninfected controls

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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BACKGROUND: While both adipose tissue accumulation and tryptophan metabolism alterations are features of human immunodeficiency virus (HIV) infection, their interplay is unclear. We investigated associations between abdominal adipose tissue, alterations in kynurenine pathway of tryptophan metabolism, and systemic inflammation in people with HIV (PWH). METHODS: Eight hundred sixty-four PWH and 75 uninfected controls were included. Plasma samples were collected and analyzed for kynurenine metabolites, neopterin, high-sensitivity C-reactive protein (hs-CRP), and lipids. Regression models were used to test associations in PWH. RESULTS: PWH had higher kynurenine-to-tryptophan ratio than uninfected individuals (P < .001). In PWH, increase in waist-to-hip ratio was associated with higher kynurenine-to-tryptophan ratio (P = .009) and quinolinic-to-kynurenic acid ratio (P = .006) and lower kynurenic acid concentration (P = .019). Quinolinic-to-kynurenic acid ratio was associated with higher hs-CRP (P < .001) and neopterin concentrations (P < .001), while kynurenic acid was associated with lower hs-CRP (P = .025) and neopterin concentrations (P = .034). CONCLUSIONS: In PWH, increase in abdominal adipose tissue was associated with increased quinolinic-to-kynurenic acid ratio, suggesting activation of proinflammatory pathway of kynurenine metabolism, with reduction of anti-inflammatory molecules and increase in systemic inflammation. Our results suggest dysregulation of kynurenine metabolism associated with abdominal fat accumulation to be a potential source of inflammation in HIV infection.

OriginalsprogEngelsk
TidsskriftThe Journal of infectious diseases
Vol/bind221
Udgave nummer3
Sider (fra-til)419-427
Antal sider9
ISSN0022-1899
DOI
StatusUdgivet - 14 jan. 2020

Bibliografisk note

© The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.

ID: 57996515