Gut microbiota, skin microbiota, and alopecia areata: A Mendelian randomization study

Author:

Li Zishun1ORCID,Zhao Changpu12,Chen Renwu1,Li Meiling1,Wang Fei1,Hao Chenyuan1,Li Rongzhi1,Zhang Yu1,Xu Yuying1

Affiliation:

1. Second Clinical Medical College Henan University of Traditional Chinese Medicine Zhengzhou China

2. Department of Hepatobiliary and Gastroenterology Henan Provincial Hospital of Traditional Chinese medicine Zhengzhou China

Abstract

AbstractBackgroundObservational studies have shown an association between skin microbiota and alopecia areata (AA), but the causal connection remains ambiguous.MethodsWe obtained data on skin microbiota and AA from summary statistics of Genome‐Wide Association Studies and applied statistical methods from Mendelian randomization (MR) to assess causal relationships. Additionally, we investigated whether the skin microbiota acts as a mediator in the pathway from gut microbiota to AA.ResultsIn the MR analysis of KORA FF4 and AA, the inverse‐variance weighting method indicated that Corynebacterium (odds ratio [OR] = 0.82, 95% confidence interval [CI]: 0.70–0.96, p = 0.02) and asv037 (OR = 0.87, 95% CI: 0.76–0.99, p = 0.05) exerted protective effects, while Betaproteobacteria (OR = 1.21, 95% CI: 1.01–1.44, p = 0.03), asv015 (OR = 1.27, 95% CI: 1.05–1.54, p = 0.02), and Burkholderiales (OR = 1.20, 95% CI: 1.04–1.38, p = 0.01) were identified as risk factors in AA. In the MR analysis of PopGen and AA, asv001 (OR = 1.12, 95% CI: 1.01–1.24, p = 0.04), asv054 (OR = 1.13, 95% CI: 1.01–1.25, p = 0.03), and asv059 (OR = 1.14, 95% CI: 1.02–1.27, p = 0.02) were found to potentially increase the risk in AA. Furthermore, in the influence of gut microbiota on AA, the skin microbiota did not act as a mediator.ConclusionOur analysis suggests potential causal relationships between certain skin microbiota and AA, revealing insights into its pathogenesis and potential intervention strategies.

Publisher

Wiley

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