{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T06:41:30Z","timestamp":1780468890960,"version":"3.54.1"},"reference-count":61,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,7,20]],"date-time":"2024-07-20T00:00:00Z","timestamp":1721433600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Euro Eating Disorders Rev"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Context<\/jats:title><jats:p>Neurohypophysis (NH) function in eating disorders (ED) remains poorly elucidated. Studies on vasopressin and oxytocin display inconclusive findings regarding their levels and associations with psychological complications in ED. The profile of opioid tone, a crucial NH activity regulator, is also unknown.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To characterise the circadian profile of NH hormones and NH opioid tone using positron emission tomography\/MRI (PET\/MRI) imaging in patients with ED compared to healthy controls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Twelve\u2010point plasma circadian profiles of copeptin and oxytocin, alongside nutritional and psychological scores, were assessed in age\u2010matched female participants: 13 patients with anorexia nervosa restrictive\u2010type (ANR), 12 patients recovered from AN (ANrec), 14 patients with bulimia nervosa and 12 controls. Neurohypophysis PET\/MRI [<jats:sup>11<\/jats:sup>C] diprenorphin binding potential (BP<jats:sub>ND<\/jats:sub>) was evaluated in AN, ANrec and controls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Results revealed lower copeptin circadian levels in both ANR and ANrec compared to controls, with no oxytocin differences. Bulimia nervosa exhibited elevated copeptin and low oxytocin levels. [<jats:sup>11<\/jats:sup>C] diprenorphin pituitary binding was fully localised in NH. Anorexia nervosa restrictive\u2010type displayed lower NH [<jats:sup>11<\/jats:sup>C] diprenorphin BP<jats:sub>ND<\/jats:sub> (indicating higher opioid tone) and volume than controls. In ANR, copeptin inversely correlated with osmolarity. Neurohypophysis [<jats:sup>11<\/jats:sup>C] diprenorphin BP<jats:sub>ND<\/jats:sub> did not correlated with copeptin or oxytocin.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Copeptin demonstrated significant group differences, highlighting its potential diagnostic and prognostic value. Oxytocin levels exhibited conflicting results, questioning the reliability of peripheral blood assessment. Increased NH opioid tone in anorexia nervosa may influence the vasopressin or oxytocin release, suggesting potential therapeutic applications.<\/jats:p><\/jats:sec>","DOI":"10.1002\/erv.3125","type":"journal-article","created":{"date-parts":[[2024,7,20]],"date-time":"2024-07-20T07:24:52Z","timestamp":1721460292000},"page":"53-66","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Circadian copeptin and oxytocin profiles in anorexia nervosa: Exploring the interplay with neurohypophysis opioid tone"],"prefix":"10.1002","volume":"33","author":[{"given":"Sandra","family":"Doua","sequence":"first","affiliation":[{"name":"TAPE Research Group Jean Monnet University Lyon University  Saint\u2010Etienne France"},{"name":"Endocrinology Department University Hospital of Saint\u2010Etienne  Saint\u2010Etienne 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