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Brain and muscle ARNT-like protein 1 (BMAL1), an essential transcription factor in circadian regulation, has garnered significant interest due to its crucial involvement in ovarian physiology and reproductive function. Dysregulated BMAL1 signaling has been linked to compromised folliculogenesis, diminished steroidogenesis, mitochondrial dysfunction, elevated oxidative stress, and irregularities in meiotic spindle organization, all of which may negatively impact oocyte quality and early embryo development. Recent experimental and clinical findings indicate that results of assisted reproduction may be influenced by circadian disruption, sleep problems, obesity, ageing, and metabolic dysfunction.<\/jats:p>","DOI":"10.3390\/genes17080981","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T09:31:59Z","timestamp":1787304719000},"page":"981","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["BMAL1-Mediated Circadian Regulation of Oocyte Quality and IVF Outcomes"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9477-7619","authenticated-orcid":false,"given":"Charalampos","family":"Voros","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, \u2018Alexand\u2019 General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-3036-7212","authenticated-orcid":false,"given":"Nektaria","family":"Zagorianakou","sequence":"additional","affiliation":[{"name":"Scientific Laboratory for Innovative Technologies in Internal Medicine, Preventive Medicine and Overall Care, Department of Nursing, School of Health Sciences, University of Ioannina, 45500 Ioannina, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stylianos","family":"Makrydimas","sequence":"additional","affiliation":[{"name":"Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fotios","family":"Chatzinikolaou","sequence":"additional","affiliation":[{"name":"Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Georgios","family":"Papadimas","sequence":"additional","affiliation":[{"name":"Athens Medical School, National and Kapodistrian University of Athens, 15772 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aristotelis Marios","family":"Koulakmanidis","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, \u2018Alexand\u2019 General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikolaos","family":"Thomakos","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, \u2018Alexand\u2019 General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2106-5922","authenticated-orcid":false,"given":"Panagiotis","family":"Antsaklis","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, \u2018Alexand\u2019 General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7108-211X","authenticated-orcid":false,"given":"Georgios","family":"Daskalakis","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, \u2018Alexand\u2019 General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George","family":"Makrydimas","sequence":"additional","affiliation":[{"name":"Department of Obstetrics & Gynecology, University Hospital of Ioannina, 45500 Ioannina, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Pfaff, D.W. 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