• J Pain · Jul 2023

    Fecal microbiota transplantation revealed a pain-related gut microbiota community in ovariectomized mice.

    • Renyuan Wang, Chang Jiang, Zhaoyi Wu, Zhe Wang, Ying Peng, Zhuoxuan Li, Zhiyang Zhang, Haodong Lin, and Zixian Chen.
    • Trauma Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
    • J Pain. 2023 Jul 1; 24 (7): 120312121203-1212.

    AbstractHigher sensitivity to pain is a common clinical symptom in postmenopausal females. The gut microbiota (GM) has recently been identified as participating in various pathophysiological processes and may change during menopause and contribute to multiple postmenopausal symptoms. Here, we investigated the possible correlation between GM alteration and allodynia in ovariectomized (OVX) mice. Results showed that OVX mice exhibited allodynia from 7 weeks after surgery compared with sham-operated (SHAM) mice by comparing pain-related behaviors. Fecal microbiota transplantation (FMT) from OVX mice induced allodynia in normal mice while FMT from SHAM mice alleviated allodynia in OVX mice. Microbiome 16S rRNA sequencing and linear discriminant analysis revealed alteration of the GM after OVX. Furthermore, Spearman's correlation analysis showed associations between pain-related behaviors and genera, and further verification identified the possible pain-related genera complex. Our findings provide new insights into the underlying mechanisms of postmenopausal allodynia, and suggest pain-related microbiota community as a promising therapeutic target. PERSPECTIVE: This article provided the evidence of gut microbiota playing essential roles in postmenopausal allodynia. This work intended to offer a guidance for further mechanism investigation into gut-brain axis and probiotics screening for postmenopausal chronic pain.Copyright © 2023 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.

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