A cross-sectional study on the shift work and metabolic syndrome in Japanese male workers

Kawada, Tomoyuki; Otsuka, Toshiaki; Inagaki, Hirofumi; Wakayama, Yoko; Katsumata, Masao; Li, Qing; Li, Yingji

doi:10.3109/13685530903536692

Cited by 23 publications

(22 citation statements)

References 17 publications

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“…Further sensitivity analysis showed that the association between night shift work and the risk of MetS remains statistically significant (RR = 1.62, 95% CI = 1.40–1.89, p heterogeneity = 0.417) after excluding the study of Kawada et al . in which the Japanese MetS criteria was used . Overall, no evidence of publication bias was presented in the current review.…”

Section: Resultsmentioning

confidence: 99%

“…We identified 13 eligible articles from the database ( Fig. 1), including three cohort studies (13)(14)(15), one nested obesity reviews case-control study (16) and nine cross-sectional studies (11,(17)(18)(19)(20)(21)(22)(23)(24). The main characteristics are summarized in Table 1.…”

Section: Description Of Studiesmentioning

confidence: 99%

“…One out of the 13 included studies focused on healthcare provider (14) and another concerned about the police officers (21); the occupations for the remaining 11 studies were mixed. The participants of five studies were male workers (13,19,(22)(23)(24) and two studies were female workers (15,20), while the others included both male and female workers. Five studies were conducted in Asian countries (15,16,19,20,24), involving a total of 15,594 workers (including 953 MetS cases).…”

Section: Description Of Studiesmentioning

confidence: 99%

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Meta‐analysis on night shift work and risk of metabolic syndrome

et al. 2014

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This study aims to quantitatively summarize the association between night shift work and the risk of metabolic syndrome (MetS), with special reference to the dose-response relationship with years of night shift work. We systematically searched all observational studies published in English on PubMed and Embase from 1971 to 2013. We extracted effect measures (relative risk, RR; or odd ratio, OR) with 95% confidence interval (CI) from individual studies to generate pooled results using meta-analysis approach. Pooled RR was calculated using random- or fixed-effect model. Downs and Black scale was applied to assess the methodological quality of included studies. A total of 13 studies were included. The pooled RR for the association between 'ever exposed to night shift work' and MetS risk was 1.57 (95% CI = 1.24-1.98, pheterogeneity = 0.001), while a higher risk was indicated in workers with longer exposure to night shifts (RR = 1.77, 95% CI = 1.32-2.36, pheterogeneity = 0.936). Further stratification analysis demonstrated a higher pooled effect of 1.84 (95% CI = 1.45-2.34) for studies using the NCEP-ATPIII criteria, among female workers (RR = 1.61, 95% CI = 1.10-2.34) and the countries other than Asia (RR = 1.65, 95% CI = 1.39-1.95). Sensitivity analysis confirmed the robustness of the results. No evidence of publication bias was detected. The present meta-analysis suggested that night shift work is significantly associated with the risk of MetS, and a positive dose-response relationship with duration of exposure was indicated.

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Section: Resultsmentioning

confidence: 99%

Section: Description Of Studiesmentioning

confidence: 99%

Section: Description Of Studiesmentioning

confidence: 99%

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Meta‐analysis on night shift work and risk of metabolic syndrome

et al. 2014

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“…In countries such as Japan and Taiwan, when studies do exist, they show conflicting results. While some studies have shown that night-shift work increases the risk of MetS,6 7 other studies have failed to show an association,8 9 whereas in one study shift work was found to be associated with a lower risk of MetS 10. Nonetheless, it should be noted that the burden of MetS in the above countries is relatively low (between 15.7% and 17.0%)11 when compared with countries with multiethnic populations such as Malaysia (between 32% and 43%) 12…”

Section: Introductionmentioning

confidence: 94%

Association between night-shift work, sleep quality and metabolic syndrome

et al. 2018

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“…Health problems because of shift work, or disease promotion by light at night, in both humans and animal models, have been addressed in numerous studies. These include various forms of cancer, especially breast and prostate cancer, though not always based on convincing epidemiological findings [160,[356][357][358][359][360][361][362][363][364][365][366][367][368], cardiovascular diseases [360,[369][370][371][372][373][374][375][376][377][378][379][380][381], peptic ulcers [371,382], obesity and metabolic syndrome [41,381,[383][384][385][386]. A full record of pertinent publications would by far exceed the scope of the current review.…”

Section: Consequences Of Rhythm Perturbationsmentioning

confidence: 99%

Melatonin, the circadian multioscillator system and health: the need for detailed analyses of peripheral melatonin signaling

Hardeland

Madrid

Tan

et al. 2011

Journal of Pineal Research

405

343

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: Evidence is accumulating regarding the importance of circadian core oscillators, several associated factors, and melatonin signaling in the maintenance of health. Dysfunction of endogenous clocks, melatonin receptor polymorphisms, age‐ and disease‐associated declines of melatonin likely contribute to numerous diseases including cancer, metabolic syndrome, diabetes type 2, hypertension, and several mood and cognitive disorders. Consequences of gene silencing, overexpression, gene polymorphisms, and deviant expression levels in diseases are summarized. The circadian system is a complex network of central and peripheral oscillators, some of them being relatively independent of the pacemaker, the suprachiasmatic nucleus. Actions of melatonin on peripheral oscillators are poorly understood. Various lines of evidence indicate that these clocks are also influenced or phase‐reset by melatonin. This includes phase differences of core oscillator gene expression under impaired melatonin signaling, effects of melatonin and melatonin receptor knockouts on oscillator mRNAs or proteins. Cross‐connections between melatonin signaling pathways and oscillator proteins, including associated factors, are discussed in this review. The high complexity of the multioscillator system comprises alternate or parallel oscillators based on orthologs and paralogs of the core components and a high number of associated factors with varying tissue‐specific importance, which offers numerous possibilities for interactions with melatonin. It is an aim of this review to stimulate research on melatonin signaling in peripheral tissues. This should not be restricted to primary signal molecules but rather include various secondarily connected pathways and discriminate between direct effects of the pineal indoleamine at the target organ and others mediated by modulation of oscillators.

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A cross-sectional study on the shift work and metabolic syndrome in Japanese male workers

Abstract: Two-shift work was associated with lower risk of MetS, which is not in accordance with past reports. This finding should therefore be re-analysed, including investigation of the job content in each group.

Cited by 23 publications

References 17 publications

Meta‐analysis on night shift work and risk of metabolic syndrome

Meta‐analysis on night shift work and risk of metabolic syndrome

Association between night-shift work, sleep quality and metabolic syndrome

Melatonin, the circadian multioscillator system and health: the need for detailed analyses of peripheral melatonin signaling

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