Objective:To examine the association between sleep characteristics and night shift work and the risk of polycystic ovary syndrome(PCOS)in Chinese women and to investigate their relationship with infertility in PCOS.Me...Objective:To examine the association between sleep characteristics and night shift work and the risk of polycystic ovary syndrome(PCOS)in Chinese women and to investigate their relationship with infertility in PCOS.Methods:From March 21,2021 to April 31,2021,3927 Chinese women with or without PCOS were recruited online.All participants completed WeChat-based electronic questionnaires.Sleep characteristics were measured using the Pittsburgh sleep quality index.Results:A total of 2871 women were included in the final analysis.Sleep duration(odds ratio[OR],0.857;95%confidence interval[CI],0.763-0.963),sleep midpoint(OR,1.142;95%CI,1.049-1.244),sleep disturbance(OR,1.320;95%CI,0.957-1.146),daytime dysfunction(OR,1.136;95%CI,1.030-1.253),and night shift work(OR,1.628;95%CI,1.264-2.097)were associated with a higher risk of PCOS.After adjusting for confounders,including age,body mass index,smoking status,and coffee and tea drinking status,sleep disturbance(OR,1.314;95%CI,1.111-1.555),daytime dysfunction(OR,1.143;95%CI,1.034-1.264),and night shift work(OR,1.800;95%CI,1.388-2.333)remained associated.In addition,sleep disturbance(OR,1.887;95%CI,1.400-2.542)and subjective sleep quality(OR,1.299;95%CI,1.037-1.627)were associated with infertility in women with PCOS,and sleep disturbance(OR,1.750;95%CI,1.281-2.390)remained significant after adjusting for confounders.Conclusions:Sleep disturbance,daytime dysfunction,and night shift work are significantly associated with PCOS.Screening for sleep disturbances and providing appropriate treatment could be potential strategies for managing PCOS and its long-term complications.展开更多
Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation betw...Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation between stress and fatigue and prolonged night shifts. Twenty-five nurses (9 men, 16 women;16 h night shift (n = 13), 8 h day shift (n = 12)) from Juntendo University Koshigaya Hospital were evaluated for four consecutive workdays separated by off days. Salivary samples were collected upon waking and before sleep on non-working days, before and after the day and night shifts, and before and after the break during the nocturnal schedule, and analyzed for levels of cortisol, chromogranin A, α-amylase activity and secretory immunoglobulin A (sIgA). On non-working days, cortisol levels showed similar kinetic pattern in both nurses. On working days, day-time nurses’ cortisol levels showed normal circadian pattern throughout the shift. Night nurses’ cortisol levels at the beginning of the shift were comparable to that of the normal morning elevation. α-Amylase activity in the night shift nurses was higher than day shift nurses through each period. No significant differences in chromogranin A and sIgA levels were detected between day and night shift workers. A 16 h night shift may cause marked circadian misalignment in cortisol levels.展开更多
文摘Objective:To examine the association between sleep characteristics and night shift work and the risk of polycystic ovary syndrome(PCOS)in Chinese women and to investigate their relationship with infertility in PCOS.Methods:From March 21,2021 to April 31,2021,3927 Chinese women with or without PCOS were recruited online.All participants completed WeChat-based electronic questionnaires.Sleep characteristics were measured using the Pittsburgh sleep quality index.Results:A total of 2871 women were included in the final analysis.Sleep duration(odds ratio[OR],0.857;95%confidence interval[CI],0.763-0.963),sleep midpoint(OR,1.142;95%CI,1.049-1.244),sleep disturbance(OR,1.320;95%CI,0.957-1.146),daytime dysfunction(OR,1.136;95%CI,1.030-1.253),and night shift work(OR,1.628;95%CI,1.264-2.097)were associated with a higher risk of PCOS.After adjusting for confounders,including age,body mass index,smoking status,and coffee and tea drinking status,sleep disturbance(OR,1.314;95%CI,1.111-1.555),daytime dysfunction(OR,1.143;95%CI,1.034-1.264),and night shift work(OR,1.800;95%CI,1.388-2.333)remained associated.In addition,sleep disturbance(OR,1.887;95%CI,1.400-2.542)and subjective sleep quality(OR,1.299;95%CI,1.037-1.627)were associated with infertility in women with PCOS,and sleep disturbance(OR,1.750;95%CI,1.281-2.390)remained significant after adjusting for confounders.Conclusions:Sleep disturbance,daytime dysfunction,and night shift work are significantly associated with PCOS.Screening for sleep disturbances and providing appropriate treatment could be potential strategies for managing PCOS and its long-term complications.
文摘Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation between stress and fatigue and prolonged night shifts. Twenty-five nurses (9 men, 16 women;16 h night shift (n = 13), 8 h day shift (n = 12)) from Juntendo University Koshigaya Hospital were evaluated for four consecutive workdays separated by off days. Salivary samples were collected upon waking and before sleep on non-working days, before and after the day and night shifts, and before and after the break during the nocturnal schedule, and analyzed for levels of cortisol, chromogranin A, α-amylase activity and secretory immunoglobulin A (sIgA). On non-working days, cortisol levels showed similar kinetic pattern in both nurses. On working days, day-time nurses’ cortisol levels showed normal circadian pattern throughout the shift. Night nurses’ cortisol levels at the beginning of the shift were comparable to that of the normal morning elevation. α-Amylase activity in the night shift nurses was higher than day shift nurses through each period. No significant differences in chromogranin A and sIgA levels were detected between day and night shift workers. A 16 h night shift may cause marked circadian misalignment in cortisol levels.
