{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T00:49:00Z","timestamp":1793148540230,"version":"4.5.0"},"reference-count":0,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2023,12,1]],"date-time":"2023-12-01T00:00:00Z","timestamp":1701388800000},"content-version":"vor","delay-in-days":548,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sleep Sci"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:p>\n          Objectives Night-shift work has been associated with several negative effects on worker\u2019s health, possibly due to circadian desynchronization, sleep deprivation and suppression of nocturnal melatonin secretion including exposure to light during the work shift. The objective of this study was to evaluate the impact of fixed night-shift work versus day-shift work on the sleep-wake cycle and on the night and day levels of cortisol and melatonin.<\/jats:p><jats:p>\n          Material and Methods Saliva samples were obtained from 36 individuals, 19 day workers (12 women and 7 men) and 17 night workers (12 women and 5 men) from a university hospital in southern Brazil, with no history of chronic diseases. Demographic and personal information were obtained through a self-administered questionnaire and sleep information by the Munich chronotype questionnaire.<\/jats:p><jats:p>\n          Results Salivary cortisol showed normal circadian rhythm in day- and night-shift workers, but was attenuated in night-shift workers during their working hours and on leave days. Night workers sleep fewer hours at night and have higher negative social jet lag than day workers.<\/jats:p><jats:p>\n          Conclusion Intervals between night shifts can be beneficial for the recovery of the hypothalamic-pituitary-adrenal axis, minimizing the negative effects on workers\u2019 health, in addition to a preventive approach to aspects related to sleep hygiene and healthy life habits.<\/jats:p>","DOI":"10.5935\/1984-0063.20220034","type":"journal-article","created":{"date-parts":[[2022,6,3]],"date-time":"2022-06-03T11:42:53Z","timestamp":1654256573000},"page":"143-148","source":"Crossref","is-referenced-by-count":42,"title":["Effect of night-shift work on cortisol circadian rhythm and melatonin levels"],"prefix":"10.1055","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8124-2527","authenticated-orcid":false,"given":"Maria Carlota Borba","family":"Brum","sequence":"additional","affiliation":[{"name":"Clinical Hospital of Porto Alegre, Division of Occupational Medicine - Porto Alegre - Rio Grande do Sul - Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martha Bergan","family":"Senger","sequence":"additional","affiliation":[{"name":"Clinical Hospital of Porto Alegre, Division of Clinical Pathology - Porto Alegre - Rio Grande do Sul - Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudia Carolina","family":"Schnorr","sequence":"additional","affiliation":[{"name":"Clinical Hospital of Porto Alegre, Division of Peripheral Vascular Surgery - Porto Alegre - Rio Grande do Sul - Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lethicia Rozales","family":"Ehlert","sequence":"additional","affiliation":[{"name":"Clinical Hospital of Porto Alegre, Division of Clinical Pathology - Porto Alegre - Rio Grande do Sul - Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ticiana da Costa","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Clinical Hospital of Porto Alegre, Division of Endocrinology - Porto Alegre - Rio Grande do Sul - Brazil."},{"name":"Federal University of Rio Grande do Sul, School of Medicine, Department of Internal Medicine - Porto Alegre - Rio Grande do Sul - Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2023,12,1]]},"container-title":["Sleep Science"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.5935\/1984-0063.20220034.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,1]],"date-time":"2023-12-01T23:37:38Z","timestamp":1701473858000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.5935\/1984-0063.20220034"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6]]},"references-count":0,"journal-issue":{"issue":"02","published-online":{"date-parts":[[2023,12,1]]},"published-print":{"date-parts":[[2022,6]]}},"URL":"https:\/\/doi.org\/10.5935\/1984-0063.20220034","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["1984-0659","1984-0063"],"issn-type":[{"value":"1984-0659","type":"print"},{"value":"1984-0063","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,6]]}}}