{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T16:13:49Z","timestamp":1772208829371,"version":"3.50.1"},"reference-count":42,"publisher":"Walter de Gruyter GmbH","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BM"],"published-print":{"date-parts":[[2022,12,7]]},"abstract":"<jats:p>There is limited information is known about the composition difference of the gut microbiota in patients with constipation and healthy controls. Here, the faecal 16S rRNA fastq sequence data of microbiota from the publicly available American Gut Project (AGP) were analysed. The tendency score matching (PSM) method was used to match in a 1:1 manner to control for confounding factors age, gender, body mass index (BMI), and country. A total of 524 participants including 262 patients with constipation and 262 healthy controls were included in this analysis. The richness and evenness of the gut microbiota in the constipation group were significantly lower than those in the control group. The dominant genera in the constipation group include <jats:italic>Escherichia_Shigella<\/jats:italic>, <jats:italic>Pseudomonas,<\/jats:italic> and <jats:italic>Citrobacter.<\/jats:italic> The dominant genera in the control group include <jats:italic>Faecalibacterium, Prevotella, Roseburia, Clostridium_XlVa,<\/jats:italic> and <jats:italic>Blautia<\/jats:italic>. The abundance of three butyrate production-related pathways were significantly higher in the constipation group than in the control groups. There was no significant difference in the diversity and gut microbiota composition in patients with constipation at different ages. In conclusion, patients with constipation showed gut microbiota and butyrate metabolism dysbiosis. This dysbiosis might provide a reference for the diagnosis and clinical therapy of diseases.<\/jats:p>","DOI":"10.3920\/bm2022.0009","type":"journal-article","created":{"date-parts":[[2022,11,15]],"date-time":"2022-11-15T09:50:32Z","timestamp":1668505832000},"page":"427-436","source":"Crossref","is-referenced-by-count":10,"title":["Alteration of the faecal microbiota composition in patients with constipation: evidence of American Gut Project"],"prefix":"10.1163","volume":"13","author":[{"given":"Y.S.","family":"Xu","sequence":"first","affiliation":[{"name":"Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, China P.R."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y.H.","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mathematics, Shandong University, Jinan, China 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