{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T03:23:05Z","timestamp":1782962585057,"version":"3.54.5"},"reference-count":56,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,8,29]],"date-time":"2022-08-29T00:00:00Z","timestamp":1661731200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007129","name":"Natural Science Foundation of Shandong Province","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Physiol."],"abstract":"<jats:p><jats:bold>Objectives:<\/jats:bold> Obstructive sleep apnea (OSA) is an independent risk factor for metabolic syndrome (MetS). Recent studies have indicated that circadian clock genes were dysregulated in OSA. In addition, it is clear that the impairment of circadian clocks drives the progression of MetS. Therefore, we hypothesized that circadian rhythm disruption links OSA with MetS.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> A total of 118 participants, who underwent polysomnography (PSG) and were diagnosed as healthy snorers (control, <jats:italic>n<\/jats:italic> = 29) or OSA (<jats:italic>n<\/jats:italic> = 89) patients based on the apnea\u2013hypopnea index (AHI), were enrolled in the present study. General information, anthropometric data, blood biochemical indicators, clock gene expressions, and levels of oxidative and inflammatory indicators were collected, determined, and compared in all the participants.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> We found that Brain and muscle aryl hydrocarbon receptor nuclear translocator-like protein 1 (Bmal1) and Differentiated embryo chondrocyte 1 (Dec1) were upregulated, while Period 1 (Per1) was reduced in OSA patients. In addition, these changing trends were closely associated with the hypoxia indicator of AHI and have a significant impact on the presence of MetS components, such as hyperglycemia (Dec1 and Per1, <jats:italic>p<\/jats:italic> &amp;lt; 0.05 and 0.001, respectively), hypertension (Bmal1 and Dec1, <jats:italic>p<\/jats:italic> &amp;lt; 0.001 and 0.01, respectively), hyperlipidemia (Dec1, <jats:italic>p<\/jats:italic> &amp;lt; 0.01), and obesity (Dec1, <jats:italic>p<\/jats:italic> &amp;lt; 0.05). Notably, expressions of Dec1 correlated with IR and predicted the presence of MetS in OSA patients. Finally, we also observed that Dec1 expression was interrelated with levels of both oxidative indicators and inflammatory biomarkers (IL-6) in OSA.<\/jats:p><jats:p><jats:bold>Conclusion:<\/jats:bold> This study concluded that circadian clock disruptions, especially Dec1, link OSA with MetS in an oxidative and inflammatory-related manner. Circadian clock Dec1 can be used as a specific biomarker (<jats:italic>p<\/jats:italic> &amp;lt; 0.001) and therapeutic target in OSA combined with Mets patients.<\/jats:p>","DOI":"10.3389\/fphys.2022.932596","type":"journal-article","created":{"date-parts":[[2022,8,29]],"date-time":"2022-08-29T14:45:05Z","timestamp":1661784305000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":30,"title":["Circadian clock disruptions link oxidative stress and systemic inflammation to metabolic syndrome in obstructive sleep apnea patients"],"prefix":"10.3389","volume":"13","author":[{"given":"Xiaoming","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuejian","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiu","family":"Meng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinhao","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Bing","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Na","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuening","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaozhi","family":"Hou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baowei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Xia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2022,8,29]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"93","DOI":"10.1016\/j.cmet.2016.09.014","article-title":"Rhythmic oxygen levels reset circadian clocks through Hif1\u03b1","volume":"25","author":"Adamovich","year":"2017","journal-title":"Cell Metab."},{"key":"B2","doi-asserted-by":"publisher","first-page":"685","DOI":"10.1007\/s10787-018-0458-0","article-title":"Il-6 signalling pathways and the development of type 2 diabetes","volume":"26","author":"Akbari","year":"2018","journal-title":"Inflammopharmacology"},{"key":"B3","doi-asserted-by":"publisher","first-page":"1347","DOI":"10.1210\/en.2010-1068","article-title":"Impairment of peripheral circadian clocks precedes metabolic abnormalities in Ob\/Ob mice","volume":"152","author":"Ando","year":"2011","journal-title":"Endocrinology"},{"key":"B4","doi-asserted-by":"publisher","first-page":"994","DOI":"10.1126\/science.aah4965","article-title":"Circadian time signatures of fitness and disease","volume":"354","author":"Bass","year":"2016","journal-title":"Science (New York, NY)"},{"key":"B5","doi-asserted-by":"publisher","first-page":"687","DOI":"10.1016\/s2213-2600(19)30198-5","article-title":"Estimation of the global prevalence and burden of obstructive sleep apnoea: a literature-based analysis","volume":"7","author":"Benjafield","year":"2019","journal-title":"Lancet. 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