{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T20:30:30Z","timestamp":1791664230766,"version":"4.3.4"},"reference-count":79,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2024,4,2]],"date-time":"2024-04-02T00:00:00Z","timestamp":1712016000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Sichuan Science and Technology Program","award":["2023NSFSC1219"],"award-info":[{"award-number":["2023NSFSC1219"]}]},{"name":"Sichuan Science and Technology Program","award":["2022ZZCX092"],"award-info":[{"award-number":["2022ZZCX092"]}]},{"name":"Sichuan Provincial Financial Support for Innovation Special Project","award":["2023NSFSC1219"],"award-info":[{"award-number":["2023NSFSC1219"]}]},{"name":"Sichuan Provincial Financial Support for Innovation Special Project","award":["2022ZZCX092"],"award-info":[{"award-number":["2022ZZCX092"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biomolecules"],"abstract":"<jats:p>Motilin is a gastrointestinal hormone that is mainly produced in the duodenum of mammals, and it is responsible for regulating appetite. However, the role and expression of motilin are poorly understood during starvation and the weaning stage, which is of great importance in the seeding cultivation of fish. In this study, the sequences of Yangtze sturgeon (Acipenser dabryanus\u00a0Motilin (AdMotilin)) motilin receptor (AdMotilinR) were cloned and characterized. The results of tissue expression showed that by contrast with mammals, AdMotilin mRNA was richly expressed in the brain, whereas AdMotilinR was highly expressed in the stomach, duodenum, and brain. Weaning from a natural diet of T. Limnodrilus to commercial feed significantly promoted the expression of AdMotilin in the brain during the period from day 1 to day 10, and after re-feeding with T. Limnodrilus the change in expression of AdMotilin was partially reversed. Similarly, it was revealed that fasting increased the expression of AdMotilin in the brain (3 h, 6 h) and duodenum (3 h), and the expression of AdMotilinR in the brain (1 h) in a time-dependent manner. Furthermore, it was observed that peripheral injection of motilin-NH2 increased food intake and the filling index of the digestive tract in the Yangtze sturgeon, which was accompanied by the changes of AdMotilinR and appetite factors expression in the brain (POMC, CART, AGRP, NPY and CCK) and stomach (CCK). These results indicate that motilin acts as an indicator of nutritional status, and also serves as a novel orexigenic factor that stimulates food intake in Acipenser dabryanus. This study lays a strong foundation for the application of motilin as a biomarker in the estimation of hunger in juvenile Acipenser dabryanu during the weaning phase, and enhances the understanding of the role of motilin as a novel regulator of feeding in fish.<\/jats:p>","DOI":"10.3390\/biom14040433","type":"journal-article","created":{"date-parts":[[2024,4,3]],"date-time":"2024-04-03T00:58:38Z","timestamp":1712105918000},"page":"433","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Motilin, a Novel Orexigenic Factor, Involved in Feeding Regulation in Yangtze Sturgeon (Acipenser dabryanus)"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7758-0603","authenticated-orcid":false,"given":"Ni","family":"Tang","sequence":"first","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ya","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingzi","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaoqi","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mei","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bin","family":"Wang","sequence":"additional","affiliation":[{"name":"Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanling","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4495-8822","authenticated-orcid":false,"given":"Shupeng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongwei","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Zhou","sequence":"additional","affiliation":[{"name":"Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiqiong","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"St-Pierre, B., Perez Palencia, J.Y., and Samuel, R.S. 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