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Previous studies showed that intravenous exposure of CdTe QDs at low concentration did not lead to obvious in vivo toxicity in the long term. However, the influence of CdTe QDs on the gut microbiota and the intestine is still unknown. Here, we explored whether single intravenous injection of CdTe QDs at low concentration can affect the gut microbiota and intestine of mice in short term. The results showed that CdTe QDs caused an imbalance of gut microbiota, especially the rapid increase in <jats:italic>Lactobacillus<\/jats:italic> on day 1 post\u2010treatment. Meanwhile, the intestine exhibited the promotion of oxidative stress, inflammatory response, and hemorrhaging on days 5 and 15. These results demonstrate that the gut microbiota and the intestine are very sensitive to the toxicity of low\u2010concentration CdTe QDs. This study provides further insight and method for the biosafety evaluation of nanomaterials.<\/jats:p>","DOI":"10.1002\/jat.4352","type":"journal-article","created":{"date-parts":[[2022,5,26]],"date-time":"2022-05-26T21:29:31Z","timestamp":1653600571000},"page":"1757-1765","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Dysbiosis of gut microbiota and intestinal damage in mice induced by a single intravenous exposure to CdTe quantum dots at low concentration"],"prefix":"10.1002","volume":"42","author":[{"given":"Xiaohui","family":"Li","sequence":"first","affiliation":[{"name":"School of Geography and Biological Information Nanjing University of Posts and Telecommunications  Nanjing China"},{"name":"Key Laboratory for Organic Electronics and Information Displays &amp; Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications  Nanjing 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