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However, the role of Dex in stress-induced anxiety-like behaviors and cognitive impairment is still unclear. In this study, we tested the role of Dex in anxiety-like behavior and cognitive impairment induced by acute restrictive stress and analyzed the alterations of the intestinal flora to explore the possible mechanism. Behavioral and cognitive tests, including open field test, elevated plus-maze test, novel object recognition test, and Barnes maze test, were performed. Intestinal gut Microbe 16S rRNA sequencing was analyzed. We found that intraperitoneal injection of Dex significantly improved acute restrictive stress-induced anxiety-like behavior, recognition, and memory impairment. After habituation in the environment, mice (male, 8\u00a0weeks, 18\u201323\u00a0g) were randomly divided into a control group (control,\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200910), dexmedetomidine group (Dex,\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200910), AS with normal saline group (AS\u2009+\u2009NS,\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200910) and AS with dexmedetomidine group (AS\u2009+\u2009Dex,\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200910). By the analysis of intestinal flora, we found that acute stress caused intestinal flora disorder in mice. Dex intervention changed the composition of the intestinal flora of acute stress mice, stabilized the ecology of the intestinal flora, and significantly increased the levels of\n                    <jats:italic>Blautia<\/jats:italic>\n                    (A genus of anaerobic bacteria) and\n                    <jats:italic>Coprobacillus<\/jats:italic>\n                    . These findings suggest that Dex attenuates acute stress-impaired learning and memory in mice by maintaining the homeostasis of intestinal flora.\n                  <\/jats:p>","DOI":"10.1186\/s40001-024-01832-5","type":"journal-article","created":{"date-parts":[[2024,5,6]],"date-time":"2024-05-06T04:01:52Z","timestamp":1714968112000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Dexmedetomidine attenuates acute stress-impaired learning and memory in mice by maintaining the homeostasis of intestinal flora"],"prefix":"10.1186","volume":"29","author":[{"given":"Hao","family":"Feng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yizi","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingni","family":"Xiao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Dai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaolan","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Feng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiao","family":"Qin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,5,6]]},"reference":[{"key":"1832_CR1","doi-asserted-by":"publisher","first-page":"88","DOI":"10.1097\/AJP.0000000000000779","volume":"36","author":"B Mei","year":"2020","unstructured":"Mei B, Xu G, Han W, Lu X, Liu R, Cheng X, Chen S, Gu E, Liu X, Zhang Y, G Perioperative Neurocognitive Disorders Study. 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