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Yoshioka T, So R, Funada S, Tsutsumi S, Nakaya T, Okubo R, Minami T, Tabuchi T. Association of night-shift work with gambling and problem gambling among workers in Japan: A nationwide cross-sectional study. Addict Behav 2024; 156:108071. [PMID: 38805772 DOI: 10.1016/j.addbeh.2024.108071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/24/2024] [Accepted: 05/20/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND AND AIMS Night-shift work disturbs sleep and is associated with poor health conditions among workers. We aimed to investigate the association between night-shift work and gambling among workers and the association between night-shift work and problem gambling in working and gambling participants. METHODS This cross-sectional study used data from an online survey conducted between February 6 and 27, 2023 in Japan. A total of 21,134 workers participated in this study, including 9,739 respondents who had gambled in the past year. We estimated the association between night-shift work and gambling among workers and the association between night-shift work and problem gambling among those who gambled at the survey. We defined problem gambling as a score ≥ 8 on the Problem Gambling Severity Index. All estimates were weighted using a nationally representative survey in Japan. We fitted multivariable weighted logistic regression models after adjusting for 14 confounders. RESULTS The weighted prevalence of gambling among non-night and night-shift workers was 42.1 % and 55.4 %, respectively. When focusing on workers gambling in the survey, the prevalence of problem gambling among non-night and night-shift workers was 8.8 % and 24.2 %, respectively. The weighted multivariable logistic regression analyses showed that night-shift work was associated with gambling participation among workers (adjusted odds ratio [aOR], 1.39, 95 % confidence interval [CI] 1.25-1.53, p < 0.001). In addition, night-shift work was associated with problem gambling among those who gambled (aOR 1.94, 95 % CI 1.57-2.40, p < 0.001). CONCLUSIONS Night-shift work was associated with gambling among workers and with problem gambling among those who gambled.
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Affiliation(s)
- Takashi Yoshioka
- Health Technology Assessment Unit, Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan; Institute of Clinical Epidemiology, Showa University, Tokyo, Japan.
| | - Ryuhei So
- Department of Psychiatry, Okayama Psychiatric Medical Center, Okayama, Japan; CureApp, Inc., Tokyo, Japan
| | - Satoshi Funada
- Health Technology Assessment Unit, Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Shiori Tsutsumi
- Graduate School of Health Management, Keio University, Kanagawa, Japan; Department of Drug Dependence Research, National Institute of Mental Health, Tokyo, Japan
| | - Tomoki Nakaya
- Graduate School of Environmental Studies, Tohoku University, Miyagi, Japan
| | - Ryo Okubo
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Hokkaido, Japan
| | - Tetsuji Minami
- Division of Quality Assurance Programs, Institute for Cancer Control, National Cancer Center, Tokyo, Japan
| | - Takahiro Tabuchi
- Division of Epidemiology, School of Public Health, Tohoku University Graduate School of Medicine, Miyagi, Japan; Cancer Control Center, Osaka International Cancer Institute, Osaka, Japan; The Tokyo Foundation for Policy Research, Tokyo, Japan
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Sadeghi M, Sadeghifar M, Golshahi J, Khani A, Rouhani S, Shokri K, Rabiei K. Exposure to occupational air pollution and vascular endothelial dysfunction in workers of the steel industry in Iran. Toxicol Ind Health 2024; 40:425-431. [PMID: 38743474 DOI: 10.1177/07482337241254630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Air pollution is recognized as a risk factor for cardiovascular diseases; however, the precise underlying mechanisms remain unclear. This study investigated the impact of occupational air pollution exposure on endothelial function in workers within the steel industry. Specifically, we examined male employees in the coke-making division of the Isfahan Steel Company in Iran, as well as those in administrative roles with no known history of cardiovascular risk. Data on age, body mass index, duration of employment, blood pressure, fasting blood sugar, and lipid profile were collected. To assess endothelial function, flow-mediated dilation (FMD) was measured. The baseline brachial artery diameter was greater (mean difference [95% CI] = 0.068 mm [0.008 to 0.128]), while the FMD was lower (mean difference [95% CI] = -0.908 % [-1.740 to -0.075]) in the coke-making group than in the control group. After controlling for potential confounding variables, it was observed that working in the coke-making sector of the industry was associated with lower FMD (F = 3.954, p = .049). These findings indicated that occupational air pollution exposure among workers in the steel industry is linked to impaired endothelium-dependent vasodilation.
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Affiliation(s)
- Masoumeh Sadeghi
- Cardiac Rehabilitation Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mostafa Sadeghifar
- Isfahan Cardiovascular Research Centre, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jafar Golshahi
- Hypertension Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Azam Khani
- Heart Failure Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sina Rouhani
- Cardiac Rehabilitation Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Kasra Shokri
- Chamran Cardiovascular Medical and Research Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Katayoun Rabiei
- Pediatric Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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Imeshtari V, Imeshtari A, La Torre G. Cardiovascular risk in young healthcare professionals: A cross-sectional study. Work 2024:WOR220701. [PMID: 38995743 DOI: 10.3233/wor-220701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND In the last years cardiovascular risk has decreased in grown adults and elderly while it seems to be rising among young adults. OBJECTIVE to assess the 10-year cardiovascular risk (CVR) in young healthcare professionals at the teaching hospital in Rome, using two scores, and identify possible determinants in order to design and implement preventive strategies. METHODS A cross-sectional study was carried out between January 2019 and July 2020. Participants underwent medical history collection, physical examination, and blood tests. CVR was calculated using CUORE and Framingham Risk Scores. A multiple linear regression analysis was conducted having the scores as dependent variables. Diagnostic tests were used for checking model assumptions. RESULTS The study was carried out including 525 participants, 58.5% physicians and 32.1% nurses. Multivariate analysis was carried out only for men, since the pp plot for the whole population and for females for the dependent variables showed some evidence of non-normality, and the residual plot shows variance of the residuals was not constant across the range of fitted values. CVR, using the Framingham equation, directly correlated with age (β = 0.260; p < 0.001). Using the CUORE score, qualification as a physician (p < 0.001) is associated with a lower risk of having a CVR, while age (p < 0.001) is directly proportional to this risk. CONCLUSIONS Increasing age consistently emerges as a prominent factor, positively influencing both the Framingham risk score and CUORE score, but this association was found only for men. Being a doctor is a protective factor for the CUORE score.
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Affiliation(s)
- Valentin Imeshtari
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy
| | - Anila Imeshtari
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy
| | - Giuseppe La Torre
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy
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Yang L, Gan YH, He XY, Deng YT, Zhang W, You J, Kuo K, Zhang YR, Huang SY, Wu BS, Guo Y, Zhang Y, Dong Q, Feng JF, Cheng W, Yu JT. Shift work effects on incident neuropsychiatric disorders and shift work tolerance. J Affect Disord 2024; 362:323-333. [PMID: 38971194 DOI: 10.1016/j.jad.2024.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 02/28/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
BACKGROUND Shift work is associated with susceptibility to several neuropsychiatric disorders. This study aims to investigate the effect of shift work on the incidence of neuropsychiatric disorders, and highlighting how individual variability may influence the association. METHODS UK Biobank participants with employment information were included. Cox survival was conducted in main and subgroup analyses. Correlation analyses explored the impact of shift work on brain structures, and mediation analyses were performed to elucidate the shared underlying mechanisms. Shift work tolerance was evaluated through survival analyses contrasting the risks associated with five neuropsychiatric disorders in shift versus non-shift workers across different demographic or occupational strata. RESULTS The analysis encompassed 254,646 participants. Shift work was associated with higher risk of dementia (HR 1.29, 95 % CI 1.10-1.52), anxiety (1.08, 1.01-1.15), depression (1.29, 1.22-1.36), and sleep disorders (1.18, 1.09-1.28), but not stroke (p = 0.20). Shift work was correlated with decreasing volume of various brain regions, particularly in thalamus, lateral orbitofrontal, and middle temporal. Mediation analysis revealed that increased immune response and glucose levels are common pathways linking shift work to these disorders. We observed diversity in shift work tolerance across different individual characteristics, among which socioeconomic status and length of working hours were the most essential. LIMITATIONS Self-reported employment information may cause misclassification and recall bias. And since we focused on the middle-aged population, the conclusions may not be representative of younger or older populations. CONCLUSIONS Our findings indicated the need to monitor shift worker health and provide personalized management to help adapt to shift work.
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Affiliation(s)
- Liu Yang
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yi-Han Gan
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiao-Yu He
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yue-Ting Deng
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Zhang
- Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Jia You
- Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Kevin Kuo
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ya-Ru Zhang
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shu-Yi Huang
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bang-Sheng Wu
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yu Guo
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yi Zhang
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jian-Feng Feng
- Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Wei Cheng
- Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Jin-Tai Yu
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China.
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Festus ID, Spilberg J, Young ME, Cain S, Khoshnevis S, Smolensky MH, Zaheer F, Descalzi G, Martino TA. Pioneering new frontiers in circadian medicine chronotherapies for cardiovascular health. Trends Endocrinol Metab 2024; 35:607-623. [PMID: 38458859 DOI: 10.1016/j.tem.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 03/10/2024]
Abstract
Cardiovascular disease (CVD) is a global health concern. Circadian medicine improves cardiovascular care by aligning treatments with our body's daily rhythms and their underlying cellular circadian mechanisms. Time-based therapies, or chronotherapies, show special promise in clinical cardiology. They optimize treatment schedules for better outcomes with fewer side effects by recognizing the profound influence of rhythmic body cycles. In this review, we focus on three chronotherapy areas (medication, light, and meal timing) with potential to enhance cardiovascular care. We also highlight pioneering research in the new field of rest, the gut microbiome, novel chronotherapies for hypertension, pain management, and small molecules that targeting the circadian mechanism.
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Affiliation(s)
- Ifene David Festus
- Centre for Cardiovascular Investigations, University of Guelph; Guelph, Ontario, Canada; Department of Biomedical Sciences, University of Guelph; Guelph, Ontario, Canada
| | - Jeri Spilberg
- Centre for Cardiovascular Investigations, University of Guelph; Guelph, Ontario, Canada; Department of Biomedical Sciences, University of Guelph; Guelph, Ontario, Canada
| | - Martin E Young
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sean Cain
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Melbourne, Victoria, Australia
| | - Sepideh Khoshnevis
- Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Michael H Smolensky
- Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, USA; Department of Internal Medicine, Division of Cardiology, McGovern School of Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Fariya Zaheer
- Department of Biomedical Sciences, University of Guelph; Guelph, Ontario, Canada
| | - Giannina Descalzi
- Department of Biomedical Sciences, University of Guelph; Guelph, Ontario, Canada
| | - Tami A Martino
- Centre for Cardiovascular Investigations, University of Guelph; Guelph, Ontario, Canada; Department of Biomedical Sciences, University of Guelph; Guelph, Ontario, Canada.
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Yang MJ, Jia ZW, Wang E, Li JC, Tang AM, Song ZB, Zhang Z. Night shift work and myocardial infarction in the UK Biobank. Occup Med (Lond) 2024:kqae045. [PMID: 38944843 DOI: 10.1093/occmed/kqae045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
BACKGROUND Shift work has become popular along with adverse effects such as disrupted biological rhythms, metabolic changes, sleep disorders and myocardial infarction. Studies have shown a link between myocardial infarction and shift work, but evidence is still lacking. AIMS We aim to explore the association between present and past shift work and risk of myocardial infarction in a large population of European workers. METHODS We analysed data from the UK Biobank with >500 000 participants and an average 12-year follow-up duration. Cox proportional hazard models were employed to analyse the relationship between present shift work (n = 265 064), lifetime duration or frequency of shift work (n = 71 428) and the risk of myocardial infarction, as well as the association between rest day during shift work and myocardial infarction incidents in night shift workers (n = 14 588). RESULTS Night shift workers had a higher risk of myocardial infarction compared to day workers, including 'shift but never/rarely night shifts' (hazard ratio [HR] = 1.09, 95% confidence interval [CI] 1.00-1.20), 'some night shifts' (HR = 1.13, 95% CI 1.01-1.27) and 'usual/permanent night shifts' (HR = 1.21, 95% CI 1.07-1.37), respectively. Similarly, higher frequency and longer duration of night shift work were associated with the increased risk of myocardial infarction (<10 years: HR = 1.20, 95% CI 1.01-1.42; ≥10 years: HR = 1.51, 95% CI 1.28-1.77; or an average of more than eight nights per month: HR = 1.45, 95% CI 1.23-1.71). However, longer rest days couldn't decrease myocardial infarction risk compared to those who rest 1 day. CONCLUSIONS Present and lifetime exposure to night shifts were associated with a risk of myocardial infarction and did not benefit from longer rest days.
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Affiliation(s)
- M J Yang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Z W Jia
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - E Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - J C Li
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- Bioinformatics Center, Furong Laboratory & Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - A M Tang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Z B Song
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Z Zhang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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Miller MR, Landrigan PJ, Arora M, Newby DE, Münzel T, Kovacic JC. Water, Soil, Noise, and Light Pollution: JACC Focus Seminar, Part 2. J Am Coll Cardiol 2024; 83:2308-2323. [PMID: 38839205 DOI: 10.1016/j.jacc.2024.03.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 03/06/2024] [Indexed: 06/07/2024]
Abstract
Various forms of pollution carry a substantial burden with respect to increasing the risk of causing and exacerbating noncommunicable diseases, especially cardiovascular disease. The first part of this 2-part series on pollution and cardiovascular disease provided an overview of the impact of global warming and air pollution. This second paper provides an overview of the impact of water, soil, noise, and light pollution on the cardiovascular system. This review discusses the biological mechanisms underlying these effects and potential environmental biometrics of exposure. What is clear from both these pollution papers is that significant efforts and redoubled urgency are needed to reduce the sources of pollution in our environment, to incorporate environmental risk factors into medical education, to provide resources for research, and, ultimately, to protect those who are particularly vulnerable and susceptible.
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Affiliation(s)
- Mark R Miller
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, United Kingdom.
| | - Philip J Landrigan
- Global Observatory on Planetary Health, Boston College, Boston, Massachusetts, USA; Centre Scientifique de Monaco, Monaco, Monaco
| | - Manish Arora
- Department of Environmental Medicine and Climate Science, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - David E Newby
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, United Kingdom
| | - Thomas Münzel
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Mainz, Germany; German Centre for Cardiovascular Research, Partner Site Rhine-Main, Mainz, Germany
| | - Jason C Kovacic
- Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia; St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia; Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; School of Human Sciences, University of Western Australia, Crawley, Western Australia, Australia
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Hong HC, Kim YM. Multimorbidity and its Associated Factors in Korean Shift Workers: Population-Based Cross-Sectional Study. JMIR Public Health Surveill 2024; 10:e55014. [PMID: 38857074 PMCID: PMC11196912 DOI: 10.2196/55014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/11/2024] [Accepted: 05/14/2024] [Indexed: 06/11/2024] Open
Abstract
BACKGROUND Multimorbidity is a crucial factor that influences premature death rates, poor health, depression, quality of life, and use of health care. Approximately one-fifth of the global workforce is involved in shift work, which is associated with increased risk for several chronic diseases and multimorbidity. About 12% to 14% of wage workers in Korea are shift workers. However, the prevalence of multimorbidity and its associated factors in Korean shift workers are rarely reported. OBJECTIVE This study aimed to assess multimorbidity prevalence, examine the factors associated with multimorbidity, and identify multimorbidity patterns among shift workers in Korea. METHODS This study is a population-based cross-sectional study using Korea National Health and Nutrition Examination Survey data from 2016 to 2020. The study included 1704 (weighted n=2,697,228) Korean shift workers aged 19 years and older. Multimorbidity was defined as participants having 2 or more chronic diseases. Demographic and job-related variables, including regular work status, average working hours per week, and shift work type, as well as health behaviors, including BMI, smoking status, alcohol use, physical activity, and sleep duration, were included in the analysis. A survey-corrected logistic regression analysis was performed to identify factors influencing multimorbidity among the workers, and multimorbidity patterns were identified with a network analysis. RESULTS The overall prevalence of multimorbidity was 13.7% (302/1704). Logistic regression indicated that age, income, regular work, and obesity were significant factors influencing multimorbidity. Network analysis results revealed that chronic diseases clustered into three groups: (1) cardiometabolic multimorbidity (hypertension, dyslipidemia, diabetes, coronary heart disease, and stroke), (2) musculoskeletal multimorbidity (arthritis and osteoporosis), and (3) unclassified diseases (depression, chronic liver disease, thyroid disease, asthma, cancer, and chronic kidney disease). CONCLUSIONS The findings revealed that several socioeconomic and behavioral factors were associated with multimorbidity among shift workers, indicating the need for policy development related to work schedule modification. Further organization-level screening and intervention programs are needed to prevent and manage multimorbidity among shift workers. We also recommend longitudinal studies to confirm the effects of job-related factors and health behaviors on multimorbidity among shift workers in the future.
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Affiliation(s)
- Hye Chong Hong
- Department of Nursing, Chung-Ang University, Seoul, Republic of Korea
| | - Young Man Kim
- College of Nursing, Jeonbuk National University, Jeonju, Republic of Korea
- Research Institute of Nursing Science, Jeonbuk National University, Jeonju, Republic of Korea
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, Republic of Korea
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9
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Mayer-Suess L, Ibrahim A, Moelgg K, Cesari M, Knoflach M, Högl B, Stefani A, Kiechl S, Heidbreder A. Sleep disorders as both risk factors for, and a consequence of, stroke: A narrative review. Int J Stroke 2024; 19:490-498. [PMID: 37885093 PMCID: PMC11134986 DOI: 10.1177/17474930231212349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND AND PURPOSE Sleep disorders are increasingly implicated as risk factors for stroke, as well as a determinant of stroke outcome. They can also occur secondary to the stroke itself. In this review, we describe the variety of different sleep disorders associated with stroke and analyze their effect on stroke risk and outcome. METHODS A search term-based literature review ("sleep," "insomnia," "narcolepsy," "restless legs syndrome," "periodic limb movements during sleep," "excessive daytime sleepiness" AND "stroke" OR "cerebrovascular" in PubMed; "stroke" and "sleep" in ClinicalTrials.gov) was performed. English articles from 1990 to March 2023 were considered. RESULTS Increasing evidence suggests that sleep disorders are risk factors for stroke. In addition, sleep disturbance has been reported in half of all stroke sufferers; specifically, an increase is not only sleep-related breathing disorders but also periodic limb movements during sleep, narcolepsy, rapid eye movement (REM) sleep behavior disorder, insomnia, sleep duration, and circadian rhythm sleep-wake disorders. Poststroke sleep disturbance has been associated with worse outcome. CONCLUSION Sleep disorders are risk factors for stroke and associated with worse stroke outcome. They are also a common consequence of stroke. Recent guidelines suggest screening for sleep disorders after stroke. It is possible that treatment of sleep disorders could both reduce stroke risk and improve stroke outcome, although further data from clinical trials are required.
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Affiliation(s)
- Lukas Mayer-Suess
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Abubaker Ibrahim
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Kurt Moelgg
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Matteo Cesari
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michael Knoflach
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- VASCage—Research Centre on Clinical Stroke Research, Innsbruck, Austria
| | - Birgit Högl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ambra Stefani
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Neurological Clinical Research Institute, Massachusetts General Hospital, Boston, MA, USA
| | - Stefan Kiechl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- VASCage—Research Centre on Clinical Stroke Research, Innsbruck, Austria
| | - Anna Heidbreder
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Department of Neurology, Johannes Kepler University Linz, Linz, Austria
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10
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Bunescu MG, Gheorman V, Marcu IR, Lungulescu CV, Dinescu VC. Tackling Shift Work: Cardiovascular Health in the Auto Industry. Healthcare (Basel) 2024; 12:1097. [PMID: 38891172 PMCID: PMC11171793 DOI: 10.3390/healthcare12111097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/21/2024] [Accepted: 05/25/2024] [Indexed: 06/21/2024] Open
Abstract
Shift work, particularly in the auto industry, presents significant health challenges, notably in how it impacts cardiovascular health due to irregular work schedules and associated sleep disruptions. This prospective study evaluated 4683 workers from a single Romanian automotive enterprise to investigate the relationship between fixed shift work schedules and cardiovascular health outcomes. Our analysis focused on fixed-shift workers, excluding those on rotating shifts to reduce variability and enhance the clarity of the findings. The findings reveal that night shift workers are at a heightened risk of cardiovascular diseases (CVDs) compared to their day shift counterparts. Night shift workers demonstrated a higher CVD incidence (4.3%) compared to day shift workers (2.6%), with an odds ratio (OR) of 1.68 (95% CI: 1.08 to 2.62, p = 0.021). This association remained significant after adjusting for potential confounders, with an adjusted OR of 1.74 (95% CI: 1.09 to 2.75, p = 0.019). Male night shift workers exhibited a significantly higher CVD incidence (4.5%) compared to male day shift workers (3.0%), with an OR of 1.75 (95% CI: 1.07 to 2.89, p = 0.026). Female night shift workers also showed a higher CVD incidence (3.4%) compared to female day shift workers (1.3%), although this was not statistically significant. These findings underscore the urgent need for targeted interventions and effective strategies to mitigate these risks and promote the cardiovascular health and overall well-being of shift workers in the auto industry. This research contributes to a deeper understanding of how non-traditional work schedules affect health and provides a basis for implementing protective measures in occupational settings.
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Affiliation(s)
- Marius Gabriel Bunescu
- Occupational Medicine Department, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, Petru Rares 2 Street, 200349 Craiova, Romania;
| | - Veronica Gheorman
- Department 3 Medical Semiology, University of Medicine and Pharmacy of Craiova, Petru Rares 2 Street, 200349 Craiova, Romania
| | - Iulia Rahela Marcu
- Department of Physical and Rehabilitation Medicine, University of Medicine and Pharmacy of Craiova, Petru Rares 2 Street, 200349 Craiova, Romania;
| | - Cristian Virgil Lungulescu
- Oncology Department, University of Medicine and Pharmacy of Craiova, Petru Rares 2 Street, 200349 Craiova, Romania;
| | - Venera Cristina Dinescu
- Department of Health Promotion and Occupational Medicine, University of Medicine and Pharmacy of Craiova, Petru Rares 2 Street, 200349 Craiova, Romania;
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11
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Aldrich JC, Scheinfeld AR, Lee SE, Dusenbery KJ, Mahach KM, Van de Veire BC, Fonken LK, Gaudet AD. Effects of dim light at night in C57BL/6 J mice on recovery after spinal cord injury. Exp Neurol 2024; 375:114725. [PMID: 38365132 PMCID: PMC10981559 DOI: 10.1016/j.expneurol.2024.114725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/09/2024] [Accepted: 02/12/2024] [Indexed: 02/18/2024]
Abstract
Spinal cord injury (SCI) can cause long-lasting locomotor deficits, pain, and mood disorders. Anatomical and functional outcomes are exacerbated by inflammation after SCI, which causes secondary damage. One promising target after SCI is manipulating the circadian system, which optimizes biology and behavior for time of day - including neuroimmune responses and mood-related behaviors. Circadian disruption after SCI is likely worsened by a disruptive hospital environment, which typically includes dim light-at-night (dLAN). Here, we hypothesized that mice subjected to SCI, then placed in dLAN, would exhibit worsened locomotor deficits, pain-like behavior, and anxiety-depressive-like symptoms compared to mice maintained in light days with dark nights (LD). C57BL/6 J mice received sham surgery or moderate T9 contusion SCI, then were placed permanently in LD or dLAN. dLAN after SCI did not worsen locomotor deficits; rather, SCI-dLAN mice showed slight improvement in open-field locomotion at the final timepoint. Although dLAN did not alter SCI-induced heat hyperalgesia, SCI-dLAN mice exhibited an increase in mechanical allodynia at 13 days post-SCI compared to SCI-LD mice. SCI-LD and SCI-dLAN mice had similar outcomes using sucrose preference (depressive-like) and open-field (anxiety-like) tests. At 21 dpo, SCI-dLAN mice had reduced preference for a novel juvenile compared to SCI-LD, implying that dLAN combined with SCI may worsen this mood-related behavior. Finally, lesion size was similar between SCI-LD and SCI-dLAN mice. Therefore, newly placing C57BL/6 J mice in dLAN after SCI had modest effects on locomotor, pain-like, and mood-related behaviors. Future studies should consider whether clinically-relevant circadian disruptors, alone or in combination, could be ameliorated to enhance outcomes after SCI.
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Affiliation(s)
- John C Aldrich
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Ashley R Scheinfeld
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Sydney E Lee
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Kalina J Dusenbery
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Kathryn M Mahach
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Brigid C Van de Veire
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Laura K Fonken
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin
| | - Andrew D Gaudet
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin, USA; Department of Neurology, Dell Medical School, The University of Texas at Austin.
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12
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d’Ettorre G, Piscitelli P, Pellicani V, Tornese R, Ceccarelli G, d’Ettorre G, La Torre G. Occupational Risk for Coronary Artery Disease in Shift Workers - A Systematic Review. LA MEDICINA DEL LAVORO 2024; 115:e2024015. [PMID: 38686577 PMCID: PMC11181222 DOI: 10.23749/mdl.v115i2.15532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 04/08/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Coronary artery disease (CAD) prevention in shift workers (SWs) poses a significant challenge worldwide, as CAD remains a major cause of mortality and disability. In the past, SWs were found at higher risk of CAD than non-s SWs. Nevertheless, the pathogenic mechanism between shift work and CAD to date is unclear. This systematic review aims to enhance understanding of the risk of CAD occurrence in SWs. METHODS A systematic literature review was conducted from January 2013 to December 2023. MEDLINE/Pubmed databases were used initially, and additional relevant studies were searched from references. Shift work was defined as any schedule outside traditional shifts, including the night shift. RESULTS Fifteen pertinent papers were categorized into risk assessment or risk management. Findings demonstrated an increased risk of CAD among SWs compared to non-SWs, with an increased CAD risk observed for both shift work and night shift work. DISCUSSION Duration-response associations indicate that greater shift exposure is linked to higher CAD risk. SWs incur an increased risk of CAD through the atherosclerotic process. As shift work duration increases as the risk of atherosclerosis is higher, workers demonstrate a higher prevalence and severity of coronary artery plaques. CONCLUSIONS The evidence-based results underscore the increased risk of CAD in SWs and are sufficient for proposing guidelines aimed at reducing the risk of CAD in SWs and at managing people with CAD in return to work characterized by disrupted circadian rhythms.
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Affiliation(s)
- Gabriele d’Ettorre
- Department of Occupational Medicine, Local Health Authority, Lecce, Italy
| | - Prisco Piscitelli
- Department of Experimental Medicine, University of Salento, Lecce, Italy
- Vito Fazzi Hospital. Local Health Autority, Lecce, Italy
| | | | | | - Giancarlo Ceccarelli
- Azienda Ospedaliero-Universitaria Policlinico Umberto I, Rome, Italy
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, Rome, Italy
| | - Gabriella d’Ettorre
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, Rome, Italy
| | - Giuseppe La Torre
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, Rome, Italy
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13
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Bezie AE, Getachew Yenealem D, Asega Belay A, Bitew Abie A, Abebaw T, Melaku C, Mamaye Y, Hailu Tesfaye A. Prevalence of work-related burnout and associated factors among police officers in central Gondar zone, Northwest Ethiopia, 2023. Front Public Health 2024; 12:1355625. [PMID: 38716240 PMCID: PMC11074469 DOI: 10.3389/fpubh.2024.1355625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 04/04/2024] [Indexed: 05/14/2024] Open
Abstract
Introduction Work-related burnout is a state of physical and psychological fatigue and exhaustion resulting from chronic workplace stress related to work. The police workforce is vulnerable to this psychosocial hazard, which affects service delivery by police workers. However, there is little evidence about the prevalence of work-related burnout and associated factors among police officers in Ethiopia. Therefore, this research investigated the prevalence and predictor variables of work-related burnout among police officers in central Gondar zone, Northwest Ethiopia, 2023. Methods An institution-based cross-sectional study was carried out from April 12 to May 12, 2023. A sample of 633 police officers was recruited through multistage random sampling techniques. To measure work-related burnout, a standardized, self-administered Copenhagen Burnout Inventory was used. To enter the collected data, EpiData V 4.6 and to analyze SPSS V 26 were used. To examine the association between work-related burnout and its predictor variables, both bivariable (p < 0.2) and multivariable (<0.05) logistic regression analyses were performed, and statistical significance was established via multivariable logistic regression. Results The response rate in this study was 96.05% (n = 608). The majority, 452 (74.3%) of the police officers, were male; the median (IQR) age of participants was 28. In the past six months, 45.7% of the police officers had experienced work-related burnout (n = 278). Being female, having a high job demand, having a high level of organizational police stress, having a moderate level of operational police stress, having a high level of operational police stress, experiencing job dissatisfaction, and sleeping troubles were risk factors significantly related to the occurrence of work-related burnout among police officers. Conclusion According to this study, a significant number of police officers suffer from burnout due to their work. Police officers' work-related burnout was found to be influenced by factors such as sex, job demands, job satisfaction, workplace stress, organizational police stress, and sleeping troubles. To address this problem, improving the handling of work pressure, developing a stress management program, finding joy at work by improving interpersonal relationships and working conditions, offering support and inspiration to female police officers, and ensuring sufficient and restful sleep are advised.
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Affiliation(s)
- Anmut Endalkachew Bezie
- Department of Occupational Health and Safety, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Dawit Getachew Yenealem
- Department of Environmental and Occupational Health and Safety, College of Medicine and Health Sciences, Institute of Public Health, University of Gondar, Gondar, Ethiopia
| | - Azanaw Asega Belay
- Department of Occupational Health and Safety, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Alebachew Bitew Abie
- Department of Environmental Health, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Tadiwos Abebaw
- Department of Occupational Health and Safety, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Christian Melaku
- Department of Occupational Health and Safety, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Yimer Mamaye
- Department of Occupational Health and Safety, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Amensisa Hailu Tesfaye
- Department of Environmental and Occupational Health and Safety, College of Medicine and Health Sciences, Institute of Public Health, University of Gondar, Gondar, Ethiopia
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14
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Soomro QH, Koplan BA, Costea AI, Roy-Chaudhury P, Tumlin JA, Kher V, Williamson DE, Pokhariyal S, McClure CK, Charytan DM. Arrhythmia and Time of Day in Maintenance Hemodialysis: Secondary Analysis of the Monitoring in Dialysis Study. Kidney Med 2024; 6:100799. [PMID: 38572395 PMCID: PMC10987926 DOI: 10.1016/j.xkme.2024.100799] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024] Open
Abstract
Rationale & Objective The incidence of arrhythmia varies by time of day. How this affects individuals on maintenance dialysis is uncertain. Our objective was to quantify the relationship of arrhythmia with the time of day and timing of dialysis. Study Design Secondary analysis of the Monitoring in Dialysis study, a multicenter prospective cohort study. Settings & Participants Loop recorders were implanted for continuous cardiac monitoring in 66 participants on maintenance dialysis with a follow up of 6 months. Exposure Time of day based on 6-hour intervals. Outcomes Event rates of clinically significant arrhythmia. Analytical Approach Negative binomial mixed effects regression models for repeated measures were used to evaluate data from the Monitoring in Dialysis study for differences in diurnal patterns of clinically significant arrhythmia among those with end-stage kidney disease with heart failure and end-stage kidney disease alone. We additionally analyzed rates according to presence of heart failure, time of dialysis shift, and dialysis versus nondialysis day. Results Rates of clinically significant arrhythmia peaked between 12:00 AM and 5:59 AM and were more than 1.5-fold as frequent during this interval than the rest of the day. In contrast, variations in atrial fibrillation peaked between 6:00 AM and 11:59 AM, but variations across the day were qualitatively small. Clinically significant arrhythmia occurred at numerically higher rate in individuals with end-stage kidney disease and heart failure (5.9 events/mo; 95% CI, 1.3-26.8) than those without heart failure (4.0 events/mo; 95% CI, 0.9-17.9). Although differences in overall rate were not significant, their periodicity was significantly different (P < 0.001), with a peak between 12:00 AM and 6:00 AM with kidney failure alone and between 6:00 AM and 11:59 AM in those with heart failure. Although the overall clinically significant arrhythmia rate was similar in morning compared with evening dialysis shifts (P = 0.43), their periodicity differed with a peak between 12:00 AM and 5:59 AM in those with AM dialysis and a later peak between 6:00 AM and 11:59 AM in those with PM shifts. Limitations Post hoc analysis, unable to account for unmeasured confounders. Conclusion Clinically significant arrhythmias showed strong diurnal patterns with a maximal peak between 12:00 AM and 5:59 AM and noon. Although overall arrhythmia rates were similar, the peak rate occurred overnight in individuals without heart failure and during the morning in individuals with heart failure. Further exploration of the influence of circadian rhythm on arrhythmia in the setting of hemodialysis is needed.
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Affiliation(s)
- Qandeel H. Soomro
- Nephrology Division, Department of Medicine, NYU Langone Medical Center, New York, New York
| | | | | | - Prabir Roy-Chaudhury
- University of North Carolina Kidney Center, Chapel Hill, North Carolina
- WG (Bill) Hefner VA Medical Center, Salisbury, North Carolina
| | - James A. Tumlin
- Georgia Nephrology Clinical Research Institute, Atlanta, Georgia
| | - Vijay Kher
- Fortis Escorts Kidney & Urology Institute, Fortis Escorts Hospital, New Delhi, India
| | | | | | | | - David M. Charytan
- Nephrology Division, Department of Medicine, NYU Langone Medical Center, New York, New York
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15
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Jankowiak S, Rossnagel K, Bauer J, Schulz A, Liebers F, Latza U, Romero Starke K, Seidler A, Nübling M, Riechmann-Wolf M, Letzel S, Wild P, Arnold N, Beutel M, Pfeiffer N, Lackner K, Münzel T, Schulze A, Hegewald J. Night shift work and cardiovascular diseases among employees in Germany: five-year follow-up of the Gutenberg Health Study. Scand J Work Environ Health 2024; 50:142-151. [PMID: 38258536 PMCID: PMC11006091 DOI: 10.5271/sjweh.4139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Indexed: 01/24/2024] Open
Abstract
OBJECTIVE This study aimed to determine if there is an increased risk of incident cardiovascular diseases (CVD) resulting from cumulative night shift work in the German population-based Gutenberg Health Study (GHS). METHODS We examined working participants of the GHS at baseline and after five years. Cumulative night shift work in the 10 years before baseline was assessed and categorized as low (1-220 nights ≙ up to 1 year), middle (221-660 nights ≙ 1-3 years), and high (>660 nights ≙ more than 3 years) night shift exposure. Hazard ratios (HR) were estimated for incident "quality-assured CVD events" using Cox proportional hazard models. RESULTS At baseline, 1092 of 8167 working participants performed night shift work. During the follow-up, 202 incident cardiovascular events occurred. The crude incidence rates for CVD per 1000 person-years were 6.88 [95% confidence interval (CI) 4.80-9.55] for night shift workers and 5.19 (95% CI 4.44-6.04) for day workers. Cumulative incidence curves showed a higher cumulative incidence in workers exposed to night shift work compared to day workers after five years. The adjusted HR for incident CVD events were 1.26 (95% CI 0.68-2.33), 1.37 (95% CI 0.74-2.53) and 1.19 (95% CI 0.67-2.12) for employees in the low, middle and high night shift categories compared to employees without night shift work, respectively. CONCLUSIONS The observed tendencies indicate that night shift work might be negatively associated with cardiovascular health. We expect the continued follow-up will clarify the long-term impact of night shift work.
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16
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Cavanaugh D, Urbanucci A, Mohamed NE, Tewari AK, Figueiro M, Kyprianou N. Link between circadian rhythm and benign prostatic hyperplasia (BPH)/lower urinary tract symptoms (LUTS). Prostate 2024; 84:417-425. [PMID: 38193363 PMCID: PMC10922447 DOI: 10.1002/pros.24656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/21/2023] [Accepted: 12/08/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND Benign prostatic hyperplasia (BPH) is the most common urologic disease in aging males, affecting 50% of men over 50 and up to 80% of men over 80 years old. Its negative impact on health-related quality of life implores further investigation into its risk factors and strategies for effective management. Although the exact molecular mechanisms underlying pathophysiological onset of BPH are poorly defined, the current hypothesized contributors to BPH and lower urinary tract symptoms (LUTS) include aging, inflammation, metabolic syndrome, and hormonal changes. These processes are indirectly influenced by circadian rhythm disruption. In this article, we review the recent evidence on the potential association of light changes/circadian rhythm disruption and the onset of BPH and impact on treatment. METHODS A narrative literature review was conducted using PubMed and Google Scholar to identify supporting evidence. The articles referenced ranged from 1975 to 2023. RESULTS A clear relationship between BPH/LUTS and circadian rhythm disruption is yet to be established. However, common mediators influence both diseases, including proinflammatory states, metabolic syndrome, and hormonal regulation that can be asserted to circadian disruption. Some studies have identified a possible relationship between general LUTS and sleep disturbance, but little research has been done on the medical management of these diseases and how circadian rhythm disruption further affects treatment outcomes. CONCLUSIONS There is evidence to implicate a relationship between BPH/LUTS and circadian rhythm disruptions. However, there is scarce literature on potential specific link in medical management of the disease and treatment outcomes with circadian rhythm disruption. Further study is warranted to provide BPH patients with insights into circadian rhythm directed appropriate interventions.
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Affiliation(s)
- Dana Cavanaugh
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Tisch Cancer Institute at Mount Sinai, New York, NY, USA
| | - Alfonso Urbanucci
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology and FiCanMid, Tampere University, Tampere, Finland
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Nihal E. Mohamed
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Tisch Cancer Institute at Mount Sinai, New York, NY, USA
| | - Ashutosh K. Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Tisch Cancer Institute at Mount Sinai, New York, NY, USA
| | - Mariana Figueiro
- Tisch Cancer Institute at Mount Sinai, New York, NY, USA
- Light and Health Research Center, Department of Population Health Science and Policy, Mount Sinai Health, New York, NY, USA
| | - Natasha Kyprianou
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Tisch Cancer Institute at Mount Sinai, New York, NY, USA
- Department of Oncological Sciences, Icahn School of medicine at Mount Sinai, New York, NY, USA
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17
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Eckle T, Bertazzo J, Khatua TN, Tabatabaei SRF, Bakhtiari NM, Walker LA, Martino TA. Circadian Influences on Myocardial Ischemia-Reperfusion Injury and Heart Failure. Circ Res 2024; 134:675-694. [PMID: 38484024 PMCID: PMC10947118 DOI: 10.1161/circresaha.123.323522] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 02/08/2024] [Indexed: 03/19/2024]
Abstract
The impact of circadian rhythms on cardiovascular function and disease development is well established, with numerous studies in genetically modified animals emphasizing the circadian molecular clock's significance in the pathogenesis and pathophysiology of myocardial ischemia and heart failure progression. However, translational preclinical studies targeting the heart's circadian biology are just now emerging and are leading to the development of a novel field of medicine termed circadian medicine. In this review, we explore circadian molecular mechanisms and novel therapies, including (1) intense light, (2) small molecules modulating the circadian mechanism, and (3) chronotherapies such as cardiovascular drugs and meal timings. These promise significant clinical translation in circadian medicine for cardiovascular disease. (4) Additionally, we address the differential functioning of the circadian mechanism in males versus females, emphasizing the consideration of biological sex, gender, and aging in circadian therapies for cardiovascular disease.
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Affiliation(s)
- Tobias Eckle
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Júlia Bertazzo
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Tarak Nath Khatua
- Centre for Cardiovascular Investigations, Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Seyed Reza Fatemi Tabatabaei
- Centre for Cardiovascular Investigations, Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Naghmeh Moori Bakhtiari
- Centre for Cardiovascular Investigations, Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Lori A Walker
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Tami A. Martino
- Centre for Cardiovascular Investigations, Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
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18
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Zeng Q, Oliva VM, Moro MÁ, Scheiermann C. Circadian Effects on Vascular Immunopathologies. Circ Res 2024; 134:791-809. [PMID: 38484032 DOI: 10.1161/circresaha.123.323619] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 02/12/2024] [Indexed: 03/19/2024]
Abstract
Circadian rhythms exert a profound impact on most aspects of mammalian physiology, including the immune and cardiovascular systems. Leukocytes engage in time-of-day-dependent interactions with the vasculature, facilitating the emigration to and the immune surveillance of tissues. This review provides an overview of circadian control of immune-vascular interactions in both the steady state and cardiovascular diseases such as atherosclerosis and infarction. Circadian rhythms impact both the immune and vascular facets of these interactions, primarily through the regulation of chemoattractant and adhesion molecules on immune and endothelial cells. Misaligned light conditions disrupt this rhythm, generally exacerbating atherosclerosis and infarction. In cardiovascular diseases, distinct circadian clock genes, while functioning as part of an integrated circadian system, can have proinflammatory or anti-inflammatory effects on these immune-vascular interactions. Here, we discuss the mechanisms and relevance of circadian rhythms in vascular immunopathologies.
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Affiliation(s)
- Qun Zeng
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland (Q.Z., V.M.O., C.S.)
| | - Valeria Maria Oliva
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland (Q.Z., V.M.O., C.S.)
| | - María Ángeles Moro
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain (M.Á.M.)
| | - Christoph Scheiermann
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland (Q.Z., V.M.O., C.S.)
- Geneva Center for Inflammation Research, Switzerland (C.S.)
- Translational Research Centre in Oncohaematology, Geneva, Switzerland (C.S.)
- Biomedical Center, Institute for Cardiovascular Physiology and Pathophysiology, Walter Brendel Center for Experimental Medicine, Faculty of Medicine, Ludwig-Maximilians-Universität Munich, Germany (C.S.)
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19
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Li W, Tiedt S, Lawrence JH, Harrington ME, Musiek ES, Lo EH. Circadian Biology and the Neurovascular Unit. Circ Res 2024; 134:748-769. [PMID: 38484026 DOI: 10.1161/circresaha.124.323514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/14/2024] [Indexed: 03/19/2024]
Abstract
Mammalian physiology and cellular function are subject to significant oscillations over the course of every 24-hour day. It is likely that these daily rhythms will affect function as well as mechanisms of disease in the central nervous system. In this review, we attempt to survey and synthesize emerging studies that investigate how circadian biology may influence the neurovascular unit. We examine how circadian clocks may operate in neural, glial, and vascular compartments, review how circadian mechanisms regulate cell-cell signaling, assess interactions with aging and vascular comorbidities, and finally ask whether and how circadian effects and disruptions in rhythms may influence the risk and progression of pathophysiology in cerebrovascular disease. Overcoming identified challenges and leveraging opportunities for future research might support the development of novel circadian-based treatments for stroke.
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Affiliation(s)
- Wenlu Li
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston (W.L., E.H.L.)
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
| | - Steffen Tiedt
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
- Institute for Stroke and Dementia Research, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany (S.T.)
| | - Jennifer H Lawrence
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
- Department of Neurology, Washington University School of Medicine, St. Louis, MO (J.H.L., E.S.M.)
| | - Mary E Harrington
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
- Neuroscience Program, Smith College, Northampton, MA (M.E.H.)
| | - Erik S Musiek
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
- Department of Neurology, Washington University School of Medicine, St. Louis, MO (J.H.L., E.S.M.)
| | - Eng H Lo
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston (W.L., E.H.L.)
- Consortium International pour la Recherche Circadienne sur l'AVC, Munich, Germany (W.L., S.T., J.H.L., M.E.H., E.S.M., E.H.L.)
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20
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Abstract
The brain is a complex organ, fundamentally changing across the day to perform basic functions like sleep, thought, and regulating whole-body physiology. This requires a complex symphony of nutrients, hormones, ions, neurotransmitters and more to be properly distributed across the brain to maintain homeostasis throughout 24 hours. These solutes are distributed both by the blood and by cerebrospinal fluid. Cerebrospinal fluid contents are distinct from the general circulation because of regulation at brain barriers including the choroid plexus, glymphatic system, and blood-brain barrier. In this review, we discuss the overlapping circadian (≈24-hour) rhythms in brain fluid biology and at the brain barriers. Our goal is for the reader to gain both a fundamental understanding of brain barriers alongside an understanding of the interactions between these fluids and the circadian timing system. Ultimately, this review will provide new insight into how alterations in these finely tuned clocks may lead to pathology.
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Affiliation(s)
- Velia S Vizcarra
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Ryann M Fame
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Lauren M Hablitz
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
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21
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Sansom K, Reynolds A, Windred D, Phillips A, Dhaliwal SS, Walsh J, Maddison K, Singh B, Eastwood P, McArdle N. The interrelationships between sleep regularity, obstructive sleep apnea, and hypertension in a middle-aged community population. Sleep 2024; 47:zsae001. [PMID: 38180870 PMCID: PMC10925954 DOI: 10.1093/sleep/zsae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 12/20/2023] [Indexed: 01/07/2024] Open
Abstract
STUDY OBJECTIVES Little is known about the interrelationships between sleep regularity, obstructive sleep apnea (OSA) and important health markers. This study examined whether irregular sleep is associated with OSA and hypertension, and if this modifies the known association between OSA and hypertension. METHODS Six hundred and two adults (age mean(SD) = 56.96(5.51) years, female = 60%) from the Raine Study who were not evening or night shift workers were assessed for OSA (in-laboratory polysomnography; apnea-hypopnea index ≥ 15 events/hour), hypertension (doctor diagnosed, or systolic blood pressure ≥140 mmHg and/or diastolic ≥90 mmHg) and sleep (wrist actigraphy for ≥5 days). A sleep regularity index (SRI) was determined from actigraphy. Participants were categorized by tertiles as severely irregular, mildly irregular, or regular sleepers. Logistic regression models examined the interrelationships between SRI, OSA and hypertension. Covariates included age, sex, body mass index, actigraphy sleep duration, insomnia, depression, activity, alcohol, smoking, and antihypertensive medication. RESULTS Compared to regular sleepers, participants with mildly irregular (OR 1.97, 95% confidence intervals [CI] 1.20 to 3.27) and severely irregular (OR 2.06, 95% CI: 1.25 to 3.42) sleep had greater odds of OSA. Compared to those with no OSA and regular sleep, OSA and severely irregular sleep combined had the highest odds of hypertension (OR 2.34 95% CI: 1.07 to 5.12; p for interaction = 0.02) while those with OSA and regular/mildly irregular sleep were not at increased risk (p for interaction = 0.20). CONCLUSIONS Sleep irregularity may be an important modifiable target for hypertension among those with OSA.
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Affiliation(s)
- Kelly Sansom
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, WA, Australia
- Queen Elizabeth II Medical Centre, West Australian Sleep Disorders Research Institute, Nedlands, WA, Australia
- Flinders University, College of Medicine and Public Health, Flinders Health and Medical Research Institute - Sleep Health, Adelaide, SA, Australia
| | - Amy Reynolds
- Flinders University, College of Medicine and Public Health, Flinders Health and Medical Research Institute - Sleep Health, Adelaide, SA, Australia
| | - Daniel Windred
- School of Psychological Sciences, Monash University, Turner Institute for Brain and Mental Health, Clayton, VIC, Australia
| | - Andrew Phillips
- School of Psychological Sciences, Monash University, Turner Institute for Brain and Mental Health, Clayton, VIC, Australia
| | - Satvinder S Dhaliwal
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Bentley, WA, Australia
- Office of the Provost, Singapore University of Social Sciences, Clementi, Singapore
- Duke-NUS Medical School, National University of Singapore, Singapore
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Jennifer Walsh
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, WA, Australia
- Queen Elizabeth II Medical Centre, West Australian Sleep Disorders Research Institute, Nedlands, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Kathleen Maddison
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, WA, Australia
- Queen Elizabeth II Medical Centre, West Australian Sleep Disorders Research Institute, Nedlands, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Bhajan Singh
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, WA, Australia
- Queen Elizabeth II Medical Centre, West Australian Sleep Disorders Research Institute, Nedlands, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Peter Eastwood
- Health Futures Institute, Murdoch University, Perth, WA, Australia
| | - Nigel McArdle
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, WA, Australia
- Queen Elizabeth II Medical Centre, West Australian Sleep Disorders Research Institute, Nedlands, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
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22
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Kraft CJ, Namsrai BE, Tobolt D, Etheridge ML, Finger EB, Bischof JC. CPA toxicity screening of cryoprotective solutions in rat hearts. Cryobiology 2024; 114:104842. [PMID: 38158172 DOI: 10.1016/j.cryobiol.2023.104842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
In clinical practice, donor hearts are transported on ice prior to transplant and discarded if cold ischemia time exceeds ∼5 h. Methods to extend these preservation times are critically needed, and ideally, this storage time would extend indefinitely, enabling improved donor-to-patient matching, organ utilization, and immune tolerance induction protocols. Previously, we demonstrated successful vitrification and rewarming of whole rat hearts without ice formation by perfusion-loading a cryoprotective agent (CPA) solution prior to vitrification. However, these hearts did not recover any beating even in controls with CPA loading/unloading alone, which points to the chemical toxicity of the cryoprotective solution (VS55 in Euro-Collins carrier solution) as the likely culprit. To address this, we compared the toxicity of another established CPA cocktail (VEG) to VS55 using ex situ rat heart perfusion. The CPA exposure time was 150 min, and the normothermic assessment time was 60 min. Using Celsior as the carrier, we observed partial recovery of function (atria-only beating) for both VS55 and VEG. Upon further analysis, we found that the VEG CPA cocktail resulted in 50 % lower LDH release than VS55 (N = 4, p = 0.017), suggesting VEG has lower toxicity than VS55. Celsior was a better carrier solution than alternatives such as UW, as CPA + Celsior-treated hearts spent less time in cardiac arrest (N = 4, p = 0.029). While we showed substantial improvement in cardiac function after exposure to vitrifiable concentrations of CPA by improving both the CPA and carrier solution formulation, further improvements will be required before we achieve healthy cryopreserved organs for transplant.
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Affiliation(s)
- Casey J Kraft
- Department of Biomedical Engineering, University of Minnesota, USA
| | | | - Diane Tobolt
- Department of Surgery, University of Minnesota, USA
| | | | - Erik B Finger
- Department of Surgery, University of Minnesota, USA.
| | - John C Bischof
- Department of Biomedical Engineering, University of Minnesota, USA; Department of Mechanical Engineering, University of Minnesota, USA; Institute for Engineering in Medicine, University of Minnesota, USA.
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23
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Sagheer U, Al-Kindi S, Abohashem S, Phillips CT, Rana JS, Bhatnagar A, Gulati M, Rajagopalan S, Kalra DK. Environmental Pollution and Cardiovascular Disease: Part 2 of 2: Soil, Water, and Other Forms of Pollution. JACC. ADVANCES 2024; 3:100815. [PMID: 38939394 PMCID: PMC11198458 DOI: 10.1016/j.jacadv.2023.100815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/21/2023] [Indexed: 06/29/2024]
Abstract
With a growing body of evidence that now links environmental pollution to adverse cardiovascular disease (CVD) outcomes, pollution has emerged as an important risk factor for CVD. There is thus an urgent need to better understand the role of pollution in CVD, key pathophysiological mechanisms, and to raise awareness among health care providers, the scientific community, the general population, and regulatory authorities about the CV impact of pollution and strategies to reduce it. This article is part 2 of a 2-part state-of-the-art review on the topic of pollution and CVD-herein we discuss major environmental pollutants and their effects on CVD, highlighting pathophysiological mechanisms, and strategies to reduce CVD risk.
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Affiliation(s)
- Usman Sagheer
- Division of Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Sadeer Al-Kindi
- Division of Cardiology, Department of Medicine, University Hospitals, Harrington Heart and Vascular Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - Shady Abohashem
- Divison of Cardiovascular Imaging, Radiology Department, Massachusetts General Hospital-Harvard Medical School, Boston, Massachusetts, USA
| | - Colin T. Phillips
- Department of Cardiology, Maine Medical Center, Portland, Maine, USA
| | - Jamal S. Rana
- The Permanente Medical Group, Department of Cardiology, Oakland Medical Center, Oakland, California, USA
| | - Aruni Bhatnagar
- Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Martha Gulati
- Department of Cardiology, Barbra Streisand Women's Heart Center, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Sanjay Rajagopalan
- Division of Cardiology, Department of Medicine, University Hospitals, Harrington Heart and Vascular Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - Dinesh K. Kalra
- Division of Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, USA
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24
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Aldrich JC, Scheinfeld AR, Lee SE, Dusenbery KJ, Mahach KM, Van de Veire BC, Fonken LK, Gaudet AD. Effects of dim light at night in C57BL/6J mice on recovery after spinal cord injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.15.557980. [PMID: 37745393 PMCID: PMC10516041 DOI: 10.1101/2023.09.15.557980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Spinal cord injury (SCI) can cause long-lasting locomotor deficits, pain, and mood disorders. Anatomical and functional outcomes are exacerbated by inflammation after SCI, which causes secondary damage. One promising target after SCI is manipulating the circadian system, which optimizes biology and behavior for time of day - including neuroimmune responses and mood-related behaviors. Circadian disruption after SCI is likely worsened by a disruptive hospital environment, which typically includes dim light-at-night (dLAN). Here, we hypothesized that mice subjected to SCI, then placed in dLAN, would exhibit worsened locomotor deficits, pain-like behavior, and anxiety-depressive-like symptoms compared to mice maintained in light days with dark nights (LD). C57BL/6J mice received sham surgery or moderate T9 contusion SCI, then were placed permanently in LD or dLAN. dLAN after SCI did not worsen locomotor deficits; rather, SCI-dLAN mice showed slight improvement in open-field locomotion at the final timepoint. Although dLAN did not alter SCI-induced heat hyperalgesia, SCI-dLAN mice exhibited an increase in mechanical allodynia at 13 days post-SCI compared to SCI-LD mice. SCI-LD and SCI-dLAN mice had similar outcomes using sucrose preference (depressive-like) and open-field (anxiety-like) tests. At 21 dpo, SCI-dLAN mice had reduced preference for a novel juvenile compared to SCI-LD, implying that dLAN combined with SCI may worsen this mood-related behavior. Finally, lesion size was similar between SCI-LD and SCI-dLAN mice. Therefore, newly placing C57BL/6J mice in dLAN after SCI had modest effects on locomotor, pain-like, and mood-related behaviors. Future studies should consider whether clinically-relevant circadian disruptors, alone or in combination, could be ameliorated to enhance outcomes after SCI.
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Affiliation(s)
- John C Aldrich
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Ashley R Scheinfeld
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Sydney E Lee
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Kalina J Dusenbery
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Kathryn M Mahach
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Brigid C Van de Veire
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
| | - Laura K Fonken
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin
| | - Andrew D Gaudet
- Department of Psychology, College of Liberal Arts, The University of Texas at Austin
- Department of Neurology, Dell Medical School, The University of Texas at Austin
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25
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Ikeda H, Kubo T. The association between work interval regularity and sleep regularity: a 2-week observational study in daytime employees. J Occup Health 2024; 66:uiae009. [PMID: 38365438 PMCID: PMC11019564 DOI: 10.1093/joccuh/uiae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/05/2024] [Indexed: 02/18/2024] Open
Abstract
OBJECTIVES Several health issues are associated with irregular sleep patterns. However, it is unclear what causes workers to sleep irregularly. The work interval (WI) between the end of one day's working hours and the start of the next day's working hours contains sleep opportunities, and an irregular WI may result in irregular sleep. This study investigated this association among Japanese daytime workers. METHODS This study recruited 141 daytime workers without shiftwork for a 14-day observational study. Participants reported the WI duration, WI timing, time in bed (TIB: difference between bedtime and wake-up time), and bedtime timing every day before bedtime. The SD over 14 days was used to calculate the regularity scores. Logistic regression analysis was performed. The dependent variables were ≥60 minutes of TIB SD and bedtime timing SD, whereas the independent variables were WI duration and timing SD. RESULTS The odds ratios (ORs) (95% CIs) for ≥60 minutes of TIB SD across categories of WI duration SD were 1.000 (reference) for <30 minutes, 1.344 (0.337-5.360) for 30-60 minutes, and 4.743 (1.441-15.607) for ≥60 minutes. The ORs (95% CIs) for ≥60 min of bedtime timing SD across categories of WI timing SD were 1.000 for <30 minutes, 4.154 (1.574-10.965) for 30-60 minutes, and 7.714 (2.124-28.015) for ≥60 minutes. CONCLUSIONS Regularity of WI was associated with regularity of sleep. To ensure worker health, workers should have regular WI, and if they are exposed to irregular WI, they should make every effort to maintain regular sleep.
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Affiliation(s)
- Hiroki Ikeda
- Japan Organization of Occupational Health and Safety, National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, 214-8585, Kawasaki, Japan
| | - Tomohide Kubo
- Japan Organization of Occupational Health and Safety, National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, 214-8585, Kawasaki, Japan
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26
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Ribeiro R, Saldanha N, Matos P, Teófilo V, Moreira S, Pinho P, Norton P. Sneddon's Syndrome and the Capability to Work: With Regard to a Clinical Case. Indian J Occup Environ Med 2024; 28:83-85. [PMID: 38783872 PMCID: PMC11111150 DOI: 10.4103/ijoem.ijoem_247_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 05/25/2024] Open
Abstract
Sneddon's syndrome is a rare condition characterized by the presence of neurocutaneous lesions, including reticular livedo and an increase in thrombotic risk, and it is associated with a greater risk of cerebrovascular disease. It is diagnosed through a skin biopsy and neurological manifestations. In this study, we present a clinical report of a 39-year-old nurse exposed to shift and night work in an intensive care unit. She was diagnosed with Sneddon's syndrome, whose workplace had to be readapted, considering the complications and restrictions of her condition and aiming her protection and healthcare promotion. Night work can exacerbate cerebral and cardiovascular events due to its impact on metabolism, blood pressure profile, and hormone concentrations. Therefore, given a syndrome characterized by an increased thrombotic risk associated with cerebrovascular events, the restriction of night work is imperative. The occupational physician is responsible for intervening in the workplace and preventing long-term consequences for employees.
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Affiliation(s)
- Rui Ribeiro
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Nuno Saldanha
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Pedro Matos
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Vanessa Teófilo
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Salomé Moreira
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Paulo Pinho
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
| | - Pedro Norton
- Occupational Health Service of Centro Hospitalar e Universitário de São João (CHUSJ), Porto, Portugal
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27
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Vestergaard JM, Dalbøge A, Bonde JPE, Garde AH, Hansen J, Hansen ÅM, Larsen AD, Härmä M, Costello S, Böttcher M, Kolstad HA. Night shift work characteristics and risk of incident coronary heart disease among health care workers: national cohort study. Int J Epidemiol 2023; 52:1853-1861. [PMID: 37741924 DOI: 10.1093/ije/dyad126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/13/2023] [Indexed: 09/25/2023] Open
Abstract
BACKGROUND Night work has been associated with coronary heart disease. The present study examined exposure-response relations between quantitative night work characteristics and coronary heart disease (angina pectoris or myocardial infarction) with the aim to contribute to evidence-based recommendations for low-risk night work schedules. METHODS We followed 100 149 night workers (80% women) and 153 882 day workers (78% women), all health care workers in Denmark with day by day payroll information on night shifts from 2007 to 2015. We analysed data with Poisson regression stratified by sex and adjusted for age, calendar year, diabetes, family history of cardiovascular disease, educational level, occupation, indicators for obesity, hypercholesterolaemia, and hypertension. RESULTS Female and male night workers worked on average 1.7 and 1.8 night shifts per month for an average duration of less than 4 years. During follow-up, 1198 night and 2128 day workers were hospitalized with first-time coronary heart disease. When compared with day workers, the overall incidence rate ratios for female and male night workers were 1.06 [95% confidence interval (CI): 0.97, 1.17] and 1.22 (95% CI 1.07, 1.39). Highest risks were observed in top exposure categories for several night work characteristics. However, no consistent exposure-response relations by number of monthly night shifts, cumulative night shifts, years with rotating night shifts, years with any night shift and consecutive night shifts were observed among the night workers of either sex. CONCLUSIONS This study of a population with low exposure to night work does not indicate that reducing extent of monthly night shifts, cumulative night shifts, years with rotating night shifts, years with any night shift and consecutive night shifts would reduce the risk of coronary heart disease.
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Affiliation(s)
- Jesper Medom Vestergaard
- Department of Occupational Medicine, Danish Ramazzini Centre, Aarhus University Hospital, Aarhus, Denmark
- Department of Occupational Medicine, Danish Ramazzini Centre, University Research Clinic, Goedstrup Hospital, Herning, Denmark
| | - Annett Dalbøge
- Department of Occupational Medicine, Danish Ramazzini Centre, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Peter Ellekilde Bonde
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Anne Helene Garde
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Johnni Hansen
- Danish Cancer Institute, Danish Cancer Society, Copenhagen, Denmark
| | - Åse Marie Hansen
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Mikko Härmä
- Finnish Institute for Occupational Health, Helsinki, Finland
| | - Sadie Costello
- Environmental Health Science, School of Public Health, University of California, Berkeley, CA, USA
| | - Morten Böttcher
- Department of Cardiology, Gødstrup Hospital, NIDO, Herning, Denmark
| | - Henrik Albert Kolstad
- Department of Occupational Medicine, Danish Ramazzini Centre, Aarhus University Hospital, Aarhus, Denmark
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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28
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Young ME. The Cardiac Circadian Clock: Implications for Cardiovascular Disease and its Treatment. JACC Basic Transl Sci 2023; 8:1613-1628. [PMID: 38205356 PMCID: PMC10774593 DOI: 10.1016/j.jacbts.2023.03.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 01/12/2024]
Abstract
Virtually all aspects of physiology fluctuate with respect to the time of day. This is beautifully exemplified by cardiovascular physiology, for which blood pressure and electrophysiology exhibit robust diurnal oscillations. At molecular/biochemical levels (eg, transcription, translation, signaling, metabolism), cardiovascular-relevant tissues (such as the heart) are profoundly different during the day vs the night. Unfortunately, this in turn contributes toward 24-hour rhythms in both risk of adverse event onset (eg, arrhythmias, myocardial infarction) and pathogenesis severity (eg, extent of ischemic damage). Accumulating evidence indicates that cell-autonomous timekeeping mechanisms, termed circadian clocks, temporally govern biological processes known to play critical roles in cardiovascular function/dysfunction. In this paper, a comprehensive review of our current understanding of the cardiomyocyte circadian clock during both health and disease is detailed. Unprecedented basic, translational, and epidemiologic studies support a need to implement chronobiological considerations in strategies designed for both prevention and treatment of cardiovascular disease.
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Affiliation(s)
- Martin E. Young
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
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29
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Jain N, Lehrer HM, Chin BN, Tracy EL, Evans MA, Krafty RT, Buysse DJ, Hall MH. Heart rate and heart rate variability following sleep deprivation in retired night shift workers and retired day workers. Psychophysiology 2023; 60:e14374. [PMID: 37409638 PMCID: PMC10770290 DOI: 10.1111/psyp.14374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 05/24/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023]
Abstract
Shift workers experience poor sleep and dysregulated cardiac autonomic function during sleep. However, it is unknown if this dysregulation persists into retirement, potentially accelerating the age-associated risk for adverse cardiovascular outcomes. Using sleep deprivation as a physiological challenge to cardiovascular autonomic function, we compared heart rate (HR) and high-frequency heart rate variability (HF-HRV) during baseline and recovery sleep following sleep deprivation between retired night shift and day workers. Participants were retired night shift (N = 33) and day workers (N = 37) equated on age (mean [standard deviation] = 68.0 [5.6] years), sex (47% female), race/ethnicity (86% White), and body mass index. Participants completed a 60-h lab protocol including one night of baseline polysomnography-monitored sleep, followed by 36 h of sleep deprivation and one night of recovery sleep. Continuously recorded HR was used to calculate HF-HRV. Linear mixed models compared HR and HF-HRV during non-rapid eye movement (NREM) and REM sleep between groups during baseline and recovery nights. Groups did not differ on HR or HF-HRV during NREM or REM sleep (ps > .05) and did not show differential responses to sleep deprivation. In the full sample, HR increased and HF-HRV decreased from baseline to recovery during NREM (ps < .05) and REM (ps < .01). Both groups exhibited cardiovascular autonomic changes during recovery sleep following 36 h of sleep deprivation. Sleep deprivation appears to induce cardiovascular autonomic changes that persist into recovery sleep in older adults, regardless of shift work history.
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Affiliation(s)
- Naveen Jain
- School of Medicine, University of Pittsburgh
| | | | | | | | | | - Robert T. Krafty
- Department of Biostatistics and Bioinformatics, Emory University
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30
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Latimer MN, Williams LJ, Shanmugan G, Carpenter BJ, Lazar MA, Dierickx P, Young ME. Cardiomyocyte-specific disruption of the circadian BMAL1-REV-ERBα/β regulatory network impacts distinct miRNA species in the murine heart. Commun Biol 2023; 6:1149. [PMID: 37952007 PMCID: PMC10640639 DOI: 10.1038/s42003-023-05537-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023] Open
Abstract
Circadian disruption increases cardiovascular disease (CVD) risk, through poorly understood mechanisms. Given that small RNA species are critical modulators of cardiac physiology/pathology, we sought to determine the extent to which cardiomyocyte circadian clock (CCC) disruption impacts cardiac small RNA species. Accordingly, we collected hearts from cardiomyocyte-specific Bmal1 knockout (CBK; a model of CCC disruption) and littermate control (CON) mice at multiple times of the day, followed by small RNA-seq. The data reveal 47 differentially expressed miRNAs species in CBK hearts. Subsequent bioinformatic analyses predict that differentially expressed miRNA species in CBK hearts influence processes such as circadian rhythmicity, cellular signaling, and metabolism. Of the induced miRNAs in CBK hearts, 7 are predicted to be targeted by the transcriptional repressors REV-ERBα/β (integral circadian clock components that are directly regulated by BMAL1). Similar to CBK hearts, cardiomyocyte-specific Rev-erbα/β double knockout (CM-RevDKO) mouse hearts exhibit increased let-7c-1-3p, miR-23b-5p, miR-139-3p, miR-5123, and miR-7068-3p levels. Importantly, 19 putative targets of these 5 miRNAs are commonly repressed in CBK and CM-RevDKO heart (of which 16 are targeted by let-7c-1-3p). These observations suggest that disruption of the circadian BMAL1-REV-ERBα/β regulatory network in the heart induces distinct miRNAs, whose mRNA targets impact critical cellular functions.
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Affiliation(s)
- Mary N Latimer
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lamario J Williams
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Gobinath Shanmugan
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Bryce J Carpenter
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Mitchell A Lazar
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Pieterjan Dierickx
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Bad Nauheim, Germany
| | - Martin E Young
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
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31
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Li Z, Huang L, Luo Y, Yu B, Tian G. Effects and possible mechanisms of intermittent fasting on health and disease: a narrative review. Nutr Rev 2023; 81:1626-1635. [PMID: 36940184 DOI: 10.1093/nutrit/nuad026] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023] Open
Abstract
The imbalance between energy intake and expenditure in an environment of continuous food availability can lead to metabolic disturbances in the body and increase the risk of obesity and a range of chronic noncommunicable diseases. Intermittent fasting (IF) is one of the most popular nonpharmacological interventions to combat obesity and chronic noncommunicable diseases. The 3 most widely studied IF regimens are alternate-day fasting, time-restricted feeding, and the 5:2 diet. In rodents, IF helps optimize energy metabolism, prevent obesity, promote brain health, improve immune and reproductive function, and delay aging. In humans, IF's benefits are relevant for the aging global population and for increasing human life expectancy. However, the optimal model of IF remains unclear. In this review, the possible mechanisms of IF are summarized and its possible drawbacks are discussed on the basis of the results of existing research, which provide a new idea for nonpharmaceutical dietary intervention of chronic noncommunicable diseases.
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Affiliation(s)
- Zimei Li
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Liansu Huang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Yuheng Luo
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Bing Yu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Gang Tian
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
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Park S, Lee J, Lee JH. Synergistic interaction between long shifts and short rest periods on depression in shift workers: A cross-sectional study from Korea. Am J Ind Med 2023; 66:977-983. [PMID: 37596767 DOI: 10.1002/ajim.23529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/23/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Long shifts and short rest periods (SRP) between shifts are important factors that greatly affect shift workers' health. However, reports on the psychological effects of shift work, such as depression, have been inconsistent. Therefore, this study aimed to investigate the combined effect of long shifts and SRP on depression in shift workers. METHODS This cross-sectional study included 3295 shift workers in the sixth Korean Working Conditions Survey. The relative excess risk due to interaction (RERI) was computed to estimate the combined effect of long shifts and SRP on depression. RESULTS Depression in shift workers was not significantly associated with long shifts or SRP after adjustment, but the risk was significantly increased when exposed to both factors simultaneously (odds ratio 1.36, 95% confidence interval 1.03-1.79). The RERI between the two factors was statistically significant (p = 0.020), indicating a synergistic interaction with depression. Sensitivity analysis by occupation showed a significant interaction in the combined group of office and service workers (p = 0.034). CONCLUSIONS Simultaneous exposure to SRP and long shifts should be avoided when planning shift work schedules or devising health policies for shift workers. Special consideration is needed for healthcare and service workers, who may be particularly vulnerable to negative health impacts due to shift work.
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Affiliation(s)
- Sungjin Park
- Department of Occupational and Environmental Medicine, Gangnam Giein Hospital, Seoul, Republic of Korea
| | - Jongin Lee
- Department of Occupational and Environmental Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - June-Hee Lee
- Department of Occupational and Environmental Medicine, Soonchunhyang University Hospital, Seoul, Republic of Korea
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Velazquez-Kronen R, MacDonald LA, Akinyemiju TF, Cushman M, Howard VJ. Shiftwork, long working hours and markers of inflammation in a national US population-based sample of employed black and white men and women aged ≥45 years. Occup Environ Med 2023; 80:635-643. [PMID: 37813482 PMCID: PMC10936900 DOI: 10.1136/oemed-2023-108902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023]
Abstract
OBJECTIVES Work schedule demands contribute to circadian disruption and may influence health via an inflammatory response. We examined the impact of shiftwork and long work hours on inflammation in a national US sample. METHODS Participants included 12 487 employed black and white men and women aged ≥45 years enrolled in the REasons for Geographic and Racial Differences in Stroke Study who completed an occupational questionnaire (2011-2013) and clinical examination (2013-2016). Cross-sectional associations between shiftwork and work hours with log-transformed high-sensitivity C reactive protein (CRP) and white blood cell (WBC) count were examined by multiple linear regression analysis, overall and by race-sex subgroups. RESULTS Overall, rotating shift workers had higher log-CRP concentration compared with day workers (β=0.09, 95% CI:0.02 to 0.16) and findings for WBC were null. Black women had the highest geometric mean CRP (2.82 mg/L), while white men had the highest WBC (6.35×109/L). White men who worked afternoons had higher log-CRP compared with those who worked days (β=0.20, 95% CI: 0.08 to 0.33). Black men engaged in shiftwork <10 years working ≥55 hours/week had higher log-CRP and log-WBC compared with those working days <55 hours/week (β=0.33, 95% CI: 0.02 to 0.64 and β=0.10, 95% CI: 0.003 to 0.19). Among shift workers, non-retired white women working forward and backward shift rotations had higher log-CRP compared with those working forward only (β=0.49, 95% CI: 0.02 to 0.96). CONCLUSIONS Shift workers had higher inflammatory markers compared with day workers and race-sex disparities should be examined further. These findings highlight a potential biological pathway linking work schedule demands and chronic disease.
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Affiliation(s)
- Raquel Velazquez-Kronen
- Field Research Branch, Division of Field Studies and Engineering, National Institute for Occupational Safety and Health, Cincinnati, Ohio, USA
| | - Leslie A MacDonald
- Field Research Branch, Division of Field Studies and Engineering, National Institute for Occupational Safety and Health, Cincinnati, Ohio, USA
| | - Tomi F Akinyemiju
- Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Mary Cushman
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont, USA
| | - Virginia J Howard
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Leung GK, Huggins KE, Bonham MP, Kleve S. Exploring Australian night shift workers' food experiences within and outside of the workplace: a qualitative photovoice study. Public Health Nutr 2023; 26:2276-2287. [PMID: 37548181 DOI: 10.1017/s1368980023001519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
OBJECTIVE Night shift workers are at a 20 to 40 % increased risk of metabolic diseases, which may be associated with their disrupted eating patterns. This qualitative study explores factors that influence night shift workers' eating habits, within and outside of the workplace, to identify target areas for health promotion strategies. PARTICIPANTS AND SETTING Eligible participants resided in Australia, working at least three overnight shifts per month. DESIGN The photovoice method was used, whereby participants were asked to take photos that represent their typical eating habits. These photos were incorporated as prompts in a semi-structured interview, which explored factors influencing eating habits on night shifts and days-off and perceptions and enablers to healthy eating. RESULTS Ten participants completed the study. Thematic analysis generated four main themes, which were mapped onto the Social Ecological Model (SE Model). Aligned with the SE Model, our results show night shift workers' eating habits are influenced by intrapersonal, interpersonal and (work) organisational levels. Participants reported that at work, appropriate food preparation facilities are required to enable healthy food choices. Poor shift work rostering leads to prolonged fatigue on days-off, limiting their ability and motivation to engage in healthy eating. Consequently, night shift workers seem to require additional supports from their social networks and enhanced food literacy skills, in order to adopt/ maintain healthy eating behaviours. CONCLUSIONS Night shift work creates individual and environmental barriers to healthy eating, which are present during and outside of work. Health promotion strategies for this population should include multiple approaches to address these barriers.
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Affiliation(s)
- Gloria Kw Leung
- Department of Nutrition, Dietetics and Food, Monash University. Level 1, 264 Ferntree Gully Road, Notting Hill, VIC3168, Australia
| | - Kate E Huggins
- Department of Nutrition, Dietetics and Food, Monash University. Level 1, 264 Ferntree Gully Road, Notting Hill, VIC3168, Australia
| | - Maxine P Bonham
- Department of Nutrition, Dietetics and Food, Monash University. Level 1, 264 Ferntree Gully Road, Notting Hill, VIC3168, Australia
| | - Sue Kleve
- Department of Nutrition, Dietetics and Food, Monash University. Level 1, 264 Ferntree Gully Road, Notting Hill, VIC3168, Australia
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Frank J, Mustard C, Smith P, Siddiqi A, Cheng Y, Burdorf A, Rugulies R. Work as a social determinant of health in high-income countries: past, present, and future. Lancet 2023; 402:1357-1367. [PMID: 37838441 DOI: 10.1016/s0140-6736(23)00871-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 01/17/2023] [Accepted: 04/27/2023] [Indexed: 10/16/2023]
Abstract
This paper, the first in a three-part Series on work and health, provides a narrative review of research into work as a social determinant of health over the past 25 years, the key emerging challenges in this field, and the implications of these challenges for future research. By use of a conceptual framework for work as a social determinant of health, we identified six emerging challenges: (1) the influence of technology on the nature of work in high-income countries, culminating in the sudden shift to telework during the COVID-19 pandemic; (2) the intersectionality of work with gender, sexual orientation, age, race, ethnicity, migrant status, and socioeconomic status as codeterminants of health disparities; (3) the arrival in many Organisation for Economic Co-operation and Development countries of large migrant labour workforces, who are often subject to adverse working conditions and social exclusion; (4) the development of precarious employment as a feature of many national labour markets; (5) the phenomenon of working long and irregular hours with potential health consequences; and (6) the looming threat of climate change's effects on work. We conclude that profound changes in the nature and availability of work over the past few decades have led to widespread new psychosocial and physical exposures that are associated with adverse health outcomes and contribute to increasing disparities in health. These new exposures at work will require novel and creative methods of data collection for monitoring of their potential health impacts to protect the workforce, and for new research into better means of occupational health promotion and protection. There is also an urgent need for a better integration of occupational health within public health, medicine, the life sciences, and the social sciences, with the work environment explicitly conceptualised as a major social determinant of health.
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Affiliation(s)
- John Frank
- Usher Institute, University of Edinburgh, Edinburgh, UK; Institute for Work & Health, Toronto, ON, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
| | - Cameron Mustard
- Institute for Work & Health, Toronto, ON, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Peter Smith
- Institute for Work & Health, Toronto, ON, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Arjumand Siddiqi
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Yawen Cheng
- Institute of Health Policy and Management, National Taiwan University, Taipei, Taiwan
| | - Alex Burdorf
- Department of Public Health, Erasmus Medical Center, Rotterdam, Netherlands
| | - Reiner Rugulies
- National Research Centre for the Working Environment, Copenhagen, Denmark; Section of Epidemiology, Department of Public Health, University of Copenhagen, Denmark
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Gupta D, Mohan L, Goel A, Kathrotia R. Evaluation of the Diurnal Cycle of Blood Pressure and Sleep in Shift Workers. Cureus 2023; 15:e48029. [PMID: 38034193 PMCID: PMC10687815 DOI: 10.7759/cureus.48029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND Circadian misalignment of physiological factors in shift workers is poorly studied in the Indian population. In the present study, 24-hour blood pressure measurements were taken on the same subject twice, once during his morning and night shifts. Sleep was also monitored by a self-reported sleep diary, which was confirmed with an activity monitor, and the sleep quality was assessed using sleep questionnaires. OBJECTIVE This study aimed to discover the pattern of blood pressure variation, the dipping and non-dipping status, and its correlation with sleep. METHODOLOGY This observational study was conducted in the Department of Physiology, All India Institute of Medical Sciences (AIIMS), Rishikesh, from April 2019 to September 2019, among security guards working rotating shifts in the Rishikesh hospital premises. Participants were given an activity sheet with instructions to document their daily activities for a complete 24-hour period on the designated measurement day, including recording the time of waking up and going to sleep. A wrist-worn activity monitor was utilised to assess the self-reported sleep duration provided by each participant on the activity sheet. RESULTS The present study showed the mean age of the participants as 27.03 ± 2.71 years, along with a mean body mass index (BMI) of 22.10 ± 1.64. Sleep duration was significantly higher during the morning shift (5.81 ± 1.08 hours) compared to the night shift (4.02 ± 1.70 hours) on the day of ambulatory blood pressure monitoring (ABPM) recording. The mean difference in systolic blood pressure between night shift workers between their awake and sleep periods was 15.91 ± 8.44 mmHg. However, no statistically significant disparity was seen when comparing the systolic blood pressure at the 24-hour mark during wakefulness and sleep between those working morning and night shifts (p >0.05). CONCLUSION The current study's findings indicate that participation in shift work, particularly night shift work, could potentially play a role in the emergence of irregular circadian blood pressure patterns and potentially lead to a lack of nocturnal blood pressure decline.
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Affiliation(s)
- Divya Gupta
- Physiology, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
- Physiology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Latika Mohan
- Physiology, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
| | - Arun Goel
- Physiology, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
| | - Rajesh Kathrotia
- Physiology, All India Institute of Medical Sciences, Rajkot, Rajkot, IND
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Cheng WY, Desmet L, Depoortere I. Time-restricted eating for chronodisruption-related chronic diseases. Acta Physiol (Oxf) 2023; 239:e14027. [PMID: 37553828 DOI: 10.1111/apha.14027] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/05/2023] [Accepted: 07/26/2023] [Indexed: 08/10/2023]
Abstract
The circadian timing system enables organisms to adapt their physiology and behavior to the cyclic environmental changes including light-dark cycle or food availability. Misalignment between the endogenous circadian rhythms and external cues is known as chronodisruption and is closely associated with the development of metabolic and gastrointestinal disorders, cardiovascular diseases, and cancer. Time-restricted eating (TRE, in human) is an emerging dietary approach for weight management. Recent studies have shown that TRE or time-restricted feeding (TRF, when referring to animals) has several beneficial health effects, which, however, are not limited to weight management. This review summarizes the effects of TRE/TRF on regulating energy metabolism, gut microbiota and homeostasis, development of cardiovascular diseases and cancer. Furthermore, we will address the role of circadian clocks in TRE/TRF and propose ways to optimize TRE as a dietary strategy to obtain maximal health benefits.
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Affiliation(s)
- Wai-Yin Cheng
- Translational Research Center for Gastrointestinal Disorders, Gut Peptide Research Lab, University of Leuven, Leuven, Belgium
| | - Louis Desmet
- Translational Research Center for Gastrointestinal Disorders, Gut Peptide Research Lab, University of Leuven, Leuven, Belgium
| | - Inge Depoortere
- Translational Research Center for Gastrointestinal Disorders, Gut Peptide Research Lab, University of Leuven, Leuven, Belgium
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Jørgensen SD, Kidmose P, Mikkelsen K, Blech M, Hemmsen MC, Rank ML, Kjaer TW. Long-term ear-EEG monitoring of sleep - A case study during shift work. J Sleep Res 2023; 32:e13853. [PMID: 36889935 DOI: 10.1111/jsr.13853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 03/10/2023]
Abstract
The interest in sleep as a potential clinical biomarker is growing, but the standard method of sleep assessment, polysomnography, is expensive, time consuming, and requires a lot of expert assistance for both set-up and interpretation. To make sleep analysis more available both in research and in the clinic, there is a need for a reliable wearable device for sleep staging. In this case study, we test ear-electroencephalography. A wearable, where electrodes are placed in the outer ear, as a platform for longitudinal at-home recording of sleep. We explore the usability of the ear-electroencephalography in a shift work case with alternating sleep conditions. We find the ear-electroencephalography platform to be reliable both in terms of showing substantial agreement to polysomnography after long-time use (with an overall agreement, using Cohen's kappa, of 0.72) and by being unobtrusive enough to wear during night shift conditions. We find that fractions of non-rapid eye movement sleep and transition probability between sleep stages show great potential as sleep metrics when exploring quantitative differences in sleep architecture between shifting sleep conditions. This study shows that the ear-electroencephalography platform holds great potential as a reliable wearable for quantifying sleep "in the wild", pushing this technology further towards clinical adaptation.
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Affiliation(s)
| | - Preben Kidmose
- Department of Electrical and Computer Engineering, Aarhus University, Aarhus, Denmark
| | - Kaare Mikkelsen
- Department of Electrical and Computer Engineering, Aarhus University, Aarhus, Denmark
| | | | | | | | - Troels Wesenberg Kjaer
- Department of Neurology, Zealand University Hospital, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
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Baillieul S, Denis C, Barateau L, Arquizan C, Detante O, Pépin JL, Dauvilliers Y, Tamisier R. The multifaceted aspects of sleep and sleep-wake disorders following stroke. Rev Neurol (Paris) 2023; 179:782-792. [PMID: 37612191 DOI: 10.1016/j.neurol.2023.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/25/2023]
Abstract
Sleep-wake disorders (SWD) are acknowledged risk factors for both ischemic stroke and poor cardiovascular and functional outcome after stroke. SWD are frequent following stroke, with sleep apnea (SA) being the most frequent SWD affecting more than half of stroke survivors. While sleep disturbances and SWD are frequently reported in the acute phase, they may persist in the chronic phase after an ischemic stroke. Despite the frequency and risk associated with SWD following stroke, screening for SWD remains rare in the clinical setting, due to challenges in the assessment of post-stroke SWD, uncertainty regarding the optimal timing for their diagnosis, and a lack of clear treatment guidelines (i.e., when to treat and the optimal treatment strategy). However, little evidence support the feasibility of SWD treatment even in the acute phase of stroke and its favorable effect on long-term cardiovascular and functional outcomes. Thus, sleep health recommendations and SWD treatment should be systematically embedded in secondary stroke prevention strategy. We therefore propose that the management of SWD associated with stroke should rely on a multidisciplinary approach, with an integrated diagnostic, treatment, and follow-up strategy. The challenges in the field are to improve post-stroke SWD diagnosis, prognosis and treatment, through a better appraisal of their pathophysiology and temporal evolution.
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Affiliation(s)
- S Baillieul
- Université Grenoble Alpes, Inserm, U1300, CHU Grenoble Alpes, Service Universitaire de Pneumologie Physiologie, 38000 Grenoble, France.
| | - C Denis
- National Reference Centre for Orphan Diseases Narcolepsy Rare Hypersomnias, Sleep Disorders Unit, Department of Neurology, CHU de Montpellier, University of Montpellier, Montpellier, France
| | - L Barateau
- National Reference Centre for Orphan Diseases Narcolepsy Rare Hypersomnias, Sleep Disorders Unit, Department of Neurology, CHU de Montpellier, University of Montpellier, Montpellier, France; Institute for Neurosciences of Montpellier (INM), University of Montpellier, Inserm, Montpellier, France
| | - C Arquizan
- Department of Neurology, Hôpital Gui-de-Chauliac, Montpellier, France; Inserm U1266, Paris, France
| | - O Detante
- Neurology Department, Grenoble Alpes University Hospital, Grenoble, France
| | - J-L Pépin
- Université Grenoble Alpes, Inserm, U1300, CHU Grenoble Alpes, Service Universitaire de Pneumologie Physiologie, 38000 Grenoble, France
| | - Y Dauvilliers
- National Reference Centre for Orphan Diseases Narcolepsy Rare Hypersomnias, Sleep Disorders Unit, Department of Neurology, CHU de Montpellier, University of Montpellier, Montpellier, France; Institute for Neurosciences of Montpellier (INM), University of Montpellier, Inserm, Montpellier, France
| | - R Tamisier
- Université Grenoble Alpes, Inserm, U1300, CHU Grenoble Alpes, Service Universitaire de Pneumologie Physiologie, 38000 Grenoble, France
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Coleman JJ, Robinson CK, von Hippel W, Holmes KE, Kim J, Pearson S, Lawless RA, Hubbard AE, Cohen MJ. What Happens on Call Doesn't Stay on Call. The Effects of In-house Call on Acute Care Surgeons' Sleep and Burnout: Results of the Surgeon Performance (SuPer) Trial. Ann Surg 2023; 278:497-505. [PMID: 37389574 DOI: 10.1097/sla.0000000000005971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
OBJECTIVE We sought to quantify the effects of in-house call(IHC) on sleep patterns and burnout among acute care surgeons (ACS). BACKGROUND Many ACS take INC, which leads to disrupted sleep and high levels of stress and burnout. METHODS Physiological and survey data of 224 ACS with IHC were collected over 6 months. Participants continuously wore a physiological tracking device and responded to daily electronic surveys. Daily surveys captured work and life events as well as feelings of restfulness and burnout. The Maslach Burnout Inventory (MBI) was administered at the beginning and end of the study period. RESULTS Physiological data were recorded for 34,135 days, which includes 4389 nights of IHC. Feelings of moderate, very, or extreme burnout occurred 25.7% of days and feelings of being moderately, slightly, or not at all rested occurred 75.91% of days. Decreased amount of time since the last IHC, reduced sleep duration, being on call, and having a bad outcome all contribute to greater feelings of daily burnout ( P <0.001). Decreased time since last call also exacerbates the negative effect of IHC on burnout ( P <0.01). CONCLUSIONS ACS exhibit lower quality and reduced amount of sleep compared with an age-matched population. Furthermore, reduced sleep and decreased time since the last call led to increased feelings of daily burnout, accumulating in emotional exhaustion as measured on the MBI. A reevaluation of IHC requirements and patterns as well as identification of countermeasures to restore homeostatic wellness in ACS is essential to protect and optimize our workforce.
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Affiliation(s)
- Jamie J Coleman
- Department of Surgery, University of Louisville, Louisville, KY
| | | | | | - Kristen E Holmes
- Department of Psychology, University of Queensland, Brisbane, Queensland, Australia
| | | | - Samuel Pearson
- Business School, University of Queensland, Brisbane, Queensland, Australia
| | - Ryan A Lawless
- Department of Surgery, Orlando Regional Medical Center, Orlando, FL
| | - Alan E Hubbard
- Department of Biostatistics, University of California Berkeley, Berkeley, CA
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Patterson PD, Friedman JC, Ding S, Miller RS, Martin-Gill C, Hostler D, Platt TE. Acute Effect of Night Shift Work on Endothelial Function with and without Naps: A Scoping Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6864. [PMID: 37835134 PMCID: PMC10572584 DOI: 10.3390/ijerph20196864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/23/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023]
Abstract
We examined the breadth and depth of the current evidence investigating napping/sleeping during night shift work and its impact on non-invasive measures of endothelial function. We used a scoping review study design and searched five databases: Ovid Medline, EMBASE, Ovid APA PsycInfo, Web of Science Core Collection, and EBSCO CINAHL. We limited our search to English language and publications from January 1980 to September 2022. Our reporting adhered to the PRISMA-ScR guidance for scoping reviews. Our search strategy yielded 1949 records (titles and abstracts) after deduplication, of which 36 were retained for full-text review. Five articles were retained, describing three observational and two experimental research studies with a total sample of 110 individuals, which examined the non-invasive indicators of endothelial function in relation to the exposure to night shift work. While there is some evidence of an effect of night shift work on the non-invasive indicators of endothelial function, this evidence is incomplete, limited to a small samples of shift workers, and is mostly restricted to one measurement technique for assessing endothelial function with diverse protocols. In addition, there is no identifiable research investigating the potential benefits of napping during night shift work on non-invasive measures of endothelial function.
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Affiliation(s)
- Paul D. Patterson
- Department of Emergency Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Community Health Services and Rehabilitation Sciences, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Jacob C. Friedman
- Department of Emergency Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Community Health Services and Rehabilitation Sciences, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Samuel Ding
- Department of Emergency Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Community Health Services and Rehabilitation Sciences, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Rebekah S. Miller
- Health Sciences Library System, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Christian Martin-Gill
- Department of Emergency Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - David Hostler
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA;
| | - Thomas E. Platt
- Department of Community Health Services and Rehabilitation Sciences, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
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Dobrowolska-Zrałka K, Kujawa K, Regulska-Ilow B. Association of the Length of Service of 24/48 Firefighters with the Quality of Their Diet and Selected Anthropometric Parameters. Nutrients 2023; 15:4029. [PMID: 37764812 PMCID: PMC10536748 DOI: 10.3390/nu15184029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
The aim of the study was to examine the association of lengths of service (LS) ≤ 10 years and >10 years in 24/48 shifts with the quality of the observed diet based on the Nutrient Rich Food Index (NRF9.3) and selected anthropometric parameters of 130 firefighters of the State Fire Service (SFS) in Wroclaw, Poland. The study also analysed the individual components of the men's diets required to calculate the NRF9.3 index in both seniority groups. Men with LS > 10 years had statistically significant higher body weight (89.00 kg vs. 81.59 kg), body-fat level (22.80 kg vs. 17.95 kg), waist circumference (96.50 cm vs. 89.00 cm), body-fat percentage (21.94 ± 4.06% vs. 25.00 ± 5.45%), body mass index (BMI) (28.10 kg/m2 vs. 25.40 kg/m2) and waist-hip ratio (WHR) (0.84 0.92 vs. 0.84), compared to the LF ≤ 10 years group. In contrast, the quality of the men's dietary adherence, based on the calculated NRF9.3 index, did not differ between the study groups, and was 662.50 ± 103.1 and 664.78 for the LS ≤ 10 years and LS > 10 years groups, respectively. Based on a statistical analysis using the NRF9.3 diet quality index by tertile (NRF9.3-C), a leading and statistically significant association of LS > 10 years vs. ≤10 years was observed as to most of the anthropometric parameters studied. In contrast, the association of participants' diet quality, as assessed by the NRF9.3 index value, was insignificant for all anthropometric parameters studied.
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Affiliation(s)
- Karolina Dobrowolska-Zrałka
- Department of Dietetics and Bromatology, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland;
| | - Krzysztof Kujawa
- Statistical Analysis Centre, Wroclaw Medical University, ul. K. Marcinkowskiego 2-6, 50-368 Wroclaw, Poland;
| | - Bożena Regulska-Ilow
- Department of Dietetics and Bromatology, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland;
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Viklund A, Andersson T, Selander J, Kader M, Albin M, Bodin T, Härmä M, Ljungman P, Bigert C. Night and shift work patterns and incidence of type 2 diabetes and hypertension in a prospective cohort study of healthcare employees. Scand J Work Environ Health 2023; 49:439-448. [PMID: 37436135 PMCID: PMC10822121 DOI: 10.5271/sjweh.4104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Indexed: 07/13/2023] Open
Abstract
OBJECTIVES This study aimed to evaluate effects of night and shift work patterns on type 2 diabetes (T2D) and hypertension in a longitudinal study, with detailed information on working hours. METHODS The cohort comprised about 28 000 nurses and nursing assistants employed for more than one year 2008-2016 in Stockholm, Sweden. The employee register held detailed individual information on daily working hours. Information on diagnoses came from national and regional registers. Hazard ratios (HR) and confidence intervals (CI) were estimated by discrete-time proportional hazard models, adjusting for sex, age, country of birth, and profession. RESULTS During follow-up in 2013-2017, we identified 232 cases of T2D and 875 of hypertension. We observed an increased risk of T2D, but not hypertension, among employees who worked only night shifts the previous year (HR 1.59, 95% CI 1.02-2.43) and those with intensive shift work (>120 afternoon and/or night shifts the previous year: HR 1.67, 95% CI 1.11-2.48) compared to only day work. There was a non-significantly increased risk of T2D related to mixed day and afternoon shifts (HR 1.34, 95% CI 0.97-1.88). We observed tendencies in increased risk of T2D related to frequent spells of ≥3 consecutive night shifts and with number of years with exclusive (but not mixed) night work. CONCLUSIONS Permanent night work and frequent afternoon and/or night shifts were associated with an increased risk of T2D the following year, but not hypertension. The T2D risk was, to some extent, affected by frequent spells of several night shifts in a row and by cumulative years with permanent night work.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Carolina Bigert
- Institute of Environmental Medicine, Karolinska Institutet, Solnavägen 4 10th Floor, SE-113 65 Stockholm, Sweden.
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Yang M, Yoo H, Kim SY, Kwon O, Nam MW, Pan KH, Kang MY. Occupational Risk Factors for Stroke: A Comprehensive Review. J Stroke 2023; 25:327-337. [PMID: 37813670 PMCID: PMC10574301 DOI: 10.5853/jos.2023.01011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 10/11/2023] Open
Abstract
For primary prevention, it is important for public health and clinical medicine to identify and characterize modifiable risk factors of stroke. In existing literature, the impact of occupational variables on ischemic and hemorrhagic stroke has been extensively studied. This review summarizes the available data on the significance of occupational variables in stroke. The results of this review suggest that there is sufficient evidence for the relationship between increased risk of stroke and job stress, working in extreme temperatures, long working hours, and/or shift work. The association between long working hours and occupational exposure to noise and chemicals remains inconclusive although several studies have reported this finding. This review will act as a step toward future research and provide information that may serve as a baseline for developing targeted interventions to prevent stroke in the working population.
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Affiliation(s)
- Munyoung Yang
- Department of Occupational and Environmental Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyoungseob Yoo
- Department of Occupational and Environmental Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seo-Young Kim
- Department of Occupational and Environmental Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ohwi Kwon
- Department of Occupational and Environmental Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Min-Woo Nam
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Seoul, Korea
| | - Kwang Hyun Pan
- Department of Neurology, Anam Hospital, Korea University, Seoul, Korea
| | - Mo-Yeol Kang
- Department of Occupational and Environmental Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Zhang Y, Zhao X, Guo C, Zhang Y, Zeng F, Yin Q, Li Z, Shao L, Zhou D, Liu L. The Circadian System Is Essential for the Crosstalk of VEGF-Notch-mediated Endothelial Angiogenesis in Ischemic Stroke. Neurosci Bull 2023; 39:1375-1395. [PMID: 36862341 PMCID: PMC10465432 DOI: 10.1007/s12264-023-01042-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/18/2022] [Indexed: 03/03/2023] Open
Abstract
Ischemic stroke is a major public health problem worldwide. Although the circadian clock is involved in the process of ischemic stroke, the exact mechanism of the circadian clock in regulating angiogenesis after cerebral infarction remains unclear. In the present study, we determined that environmental circadian disruption (ECD) increased the stroke severity and impaired angiogenesis in the rat middle cerebral artery occlusion model, by measuring the infarct volume, neurological tests, and angiogenesis-related protein. We further report that Bmal1 plays an irreplaceable role in angiogenesis. Overexpression of Bmal1 promoted tube-forming, migration, and wound healing, and upregulated the vascular endothelial growth factor (VEGF) and Notch pathway protein levels. This promoting effect was reversed by the Notch pathway inhibitor DAPT, according to the results of angiogenesis capacity and VEGF pathway protein level. In conclusion, our study reveals the intervention of ECD in angiogenesis in ischemic stroke and further identifies the exact mechanism by which Bmal1 regulates angiogenesis through the VEGF-Notch1 pathway.
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Affiliation(s)
- Yuxing Zhang
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Changsha, 410208, China
- Hunan University of Chinese Medicine, Changsha, 410006, China
| | - Xin Zhao
- Hunan University of Chinese Medicine, Changsha, 410006, China
| | - Chun Guo
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
| | - Ying Zhang
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
- Hunan University of Chinese Medicine, Changsha, 410006, China
| | - Fukang Zeng
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Changsha, 410208, China
- Hunan University of Chinese Medicine, Changsha, 410006, China
| | - Qian Yin
- Hunan University of Chinese Medicine, Changsha, 410006, China
| | - Zhong Li
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
| | - Le Shao
- Hunan University of Chinese Medicine, Changsha, 410006, China
- Laboratory of Prevention and Transformation of Major Diseases in Internal Medicine of Traditional Chinese Medicine, Changsha, 410007, China
| | - Desheng Zhou
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China.
| | - Lijuan Liu
- Department of Neurology, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China.
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Khan D, Edgell H, Rotondi M, Tamim H. The association between shift work exposure and cognitive impairment among middle-aged and older adults: Results from the Canadian Longitudinal Study on Aging (CLSA). PLoS One 2023; 18:e0289718. [PMID: 37610977 PMCID: PMC10446236 DOI: 10.1371/journal.pone.0289718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/23/2023] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Shift work, especially rotating and night shift work, has been linked to a wide range of detrimental health outcomes. Occupational factors like shift work and their potential impact on cognitive functions have received little attention, and the evidence is inconclusive. The objective of our study is to explore associations between shift work exposure and cognitive impairment indicators based on comparisons with the normative standards from the Canadian population. METHODS Cross-sectional analyses were performed using baseline Canadian Longitudinal Study on Aging database, including 47,811 middle-aged and older adults (45-85 years). Three derived shift work variables were utilized: ever exposed to shift work, shift work exposure in longest job, and shift work exposure in current job. Four cognitive function tests were utilized, Rey Auditory Verbal Learning Tests (immediate and delayed) representing memory domain, and Animal Fluency, and Mental Alteration, representing the executive function domain. All cognitive test scores included in study were normalized and adjusted for the participant's age, sex, education and language of test administration (English and French), which were then compared to normative data to create "cognitive impairment' variables. Unadjusted and adjusted multivariable logistic regression models were used to determine associations between shift work variables and cognitive impairment individually (memory and executive function domains), and also for overall cognitive impairment. RESULT Overall, one in every five individuals (21%) reported having been exposed to some kind of shift work during their jobs. Exposure to night shift work (both current and longest job) was associated with overall cognitive impairment. In terms of domain-based measures, night shift work (longest job) was associated with memory function impairment, and those exposed to rotating shift work (both current and longest job) showed impairment on executive function measures, when compared to daytime workers. CONCLUSION This study suggests disruption to the circadian rhythm, due to shift work has negative impact on cognitive function in middle-aged and older adults and this warrants further investigation.
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Affiliation(s)
- Durdana Khan
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Heather Edgell
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Michael Rotondi
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Hala Tamim
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
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Makris KC, Heibati B, Narui SZ. Chrono-modulated effects of external stressors on oxidative stress and damage in humans: A scoping review on night shift work. ENVIRONMENT INTERNATIONAL 2023; 178:108048. [PMID: 37463540 DOI: 10.1016/j.envint.2023.108048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Oxidative stress and tissue damage (OSD) play a pivotal role as an early-stage process in chronic disease pathogenesis. However, there has been little research to better understand the temporal (χρόνος[chronos]) dimensions of OSD process associated with environmental (non-genetic, including behaviors/lifestyle) and/or occupational stressors, like night shift work. OSD processes have recently attracted attention in relation to time-resolved external stressor trajectories in personalized medicine (prevention) initiatives, as they seem to interact with circadian clock systems towards the improved delineation of the early stages of (chronic) disease process. OBJECTIVES This work critically reviewed human studies targeting the temporal dynamics of OSD and circadian clock system's activity in response to environmental/occupational stressors; the case of night shift work was examined. METHODS Being a key stressor influencing OSD processes and circadian rhythm, night shift work was evaluated as part of a scoping review of research in OSD, including inflammatory and metabolic processes to determine the extent of OSD research undertaken in human populations, methodologies, tools and biomarkers used and the extent that the temporal dimensions of exposure and biological effect(s) were accounted for. Online databases were searched for papers published from 2000 onwards, resulting in the selection of 53 original publications. RESULTS AND DISCUSSION The majority of studies (n = 41) took place in occupational settings, while the rest were conducted in the general population or patient groups. Most occupational studies targeted outcomes of oxidative stress/damage (n = 19), followed by the combination of OSD with inflammatory response (n = 10), and studies focused on metabolic outcomes (n = 12). Only a minor fraction of the studies measured biomarkers related to circadian rhythm, such as, melatonin, its metabolite, or cortisol. Night shift work was associated with select biomarkers of OSD and inflammation, albeit with mixed results. Although much progress in delineating the biological mechanisms of OSD process has been made, an equally thorough investigation on the temporal trajectory of OSD processes as triggered by environmental/occupational stressors in human studies has yet to fully evolve.
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Affiliation(s)
- Konstantinos C Makris
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus.
| | - Behzad Heibati
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus; Department of Research, Cancer Registry Norway, Oslo, Norway
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48
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Patterson PD, Okerman TS, Roach DGL, Weaver MD, Patterson CG, Martin SE, Okwiya N, Nong L, Eyiba C, Huff JR, Ruzicka A, Ruggieri J, McIlvaine Q, Weiss LS. Effect of Short versus Long Duration Naps on Blood Pressure during Simulated Night Shift Work: A Randomized Crossover Trial. PREHOSP EMERG CARE 2023; 27:815-824. [PMID: 37347964 DOI: 10.1080/10903127.2023.2227891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/02/2023] [Accepted: 06/11/2023] [Indexed: 06/24/2023]
Abstract
OBJECTIVE Blunting of the sleep-related dip in blood pressure (BP) has been linked to numerous cardiovascular outcomes including myocardial infarction. Blunting of BP dipping occurs during night shift work and previous research suggest that a 60-min or longer on-shift nap is needed to restore normal/healthy BP dipping. We sought to determine the effect of different durations of napping on BP during and following simulated night shifts. We hypothesized that the greatest benefit in terms of restoration of normal BP dipping during night shift work would be observed during a longer duration nap versus a shorter nap opportunity. METHODS We used a randomized crossover laboratory-based study design. Participants consented to complete three separate 72-hr conditions that included a 12-hr simulated night shift. Nap conditions included a 30-min and 2-hr nap compared to a no-nap condition. Ambulatory BP monitoring was assessed hourly and every 10-30 mins during in-lab naps. Blunted BP dipping during in-lab naps was the primary outcome. Goal enrollment of 25 (35 with attrition) provided 80% power to detect a mean difference of 5 mmHg in BP between nap conditions. RESULTS Of the 58 screened, 28 were consented, and 26 completed all three 72-hr conditions. More than half (53.6%) were female. Mean age was 24.4 years (SD7.2). Most (85.7%) were certified as emergency medical technicians or paramedics. The mean percentage dip in systolic BP (SBP) and diastolic BP (DBP) did not differ between the 30-min and 2-hr nap conditions (p > 0.05), yet a greater proportion of participants experienced a 10-20% dip in SBP or DBP during the 2-hr nap versus the 30-min nap (p < 0.05). For every additional minute of total sleep during the 30-min nap, the percentage of SBP dip improved by 0.60%, and the percentage of DBP dip improved by 0.68% (p < 0.05). These improvements approximate to a 6% per minute relative advancement toward normal/healthy BP dipping. CONCLUSIONS Restoration of a normal/healthy dip in BP is achievable during short and long duration nap opportunities during simulated night shift work. Our findings support the hypothesis that BP dipping is more common during longer 2-hr versus shorter 30-min naps. TRIAL REGISTRATION ClinicalTrials.gov, NCT04469803. Registered on 9 July 2020.
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Affiliation(s)
- P Daniel Patterson
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Health and Rehabilitation Sciences, Emergency Medicine Program, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Tiffany S Okerman
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Health and Rehabilitation Sciences, Emergency Medicine Program, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - David G L Roach
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Matthew D Weaver
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Massachusetts
- Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
| | - Charity G Patterson
- School of Health and Rehabilitation Sciences, SHRS Data Center, and Department of Physical Therapy, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Sarah E Martin
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Nicholas Okwiya
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Lily Nong
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Health and Rehabilitation Sciences, Emergency Medicine Program, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Chinemeh Eyiba
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jordan R Huff
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Health and Rehabilitation Sciences, Emergency Medicine Program, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Anna Ruzicka
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Julia Ruggieri
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Quentin McIlvaine
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Health and Rehabilitation Sciences, Emergency Medicine Program, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Leonard S Weiss
- School of Medicine, Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
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Sooriyaarachchi P, Jayawardena R, Pavey T, King NA. The effect of shift work on different hematological parameters among healthcare workers. Chronobiol Int 2023; 40:918-925. [PMID: 37424389 DOI: 10.1080/07420528.2023.2231079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/01/2023] [Accepted: 06/24/2023] [Indexed: 07/11/2023]
Abstract
Shift workers frequently experience alterations in their circadian rhythms, which are correlated with variations in hematological parameters. Changes in blood cells may be related to an individual's health status. Therefore, this study aimed to compare the relationship between shift work and changes in blood cells among a group of healthcare workers in Sri Lanka. A comparative cross-sectional study was conducted among healthcare workers, recruited by a stratified random sampling technique. Socio-demographic data were collected using a structured questionnaire. Venous blood samples were obtained and analyzed for the determination of total and differential blood cell counts. Descriptive statistics were used for the analysis of sociodemographic and hematological parameters. A sample of 37-day workers and 39 shift workers were included in the analysis. The mean ages (years) were not significantly different between the groups (36.8 ± 10.8 vs 39.1 ± 12.0; P = 0.371). Shift employees showed a significantly higher total mean white blood cell count (WBC) of 7548.75 mm-3 compared to day workers' 6869.19 mm-3 (P = 0.027). They also had higher mean absolute counts for all different WBC types (Neutrophils: 3949.2 vs 3557.7 , Lymphocyte: 2756.5 vs 2614.2 , Eosinophil: 317.6 vs 233.4 , Monocytes: 491.63 vs 432.51 , Basophils: 31.68 vs 29.22 ). Shift employees exhibited higher WBC counts than day workers at the same level of work experience. The length of shift work exposure revealed a positive link with neutrophil (r = 0.225 ) and eosinophil counts (r = 0.262 ), whereas these correlations were negative for day workers. Shift workers were associated with higher WBC counts in healthcare workers compared to their day-working counterparts.
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Affiliation(s)
- Piumika Sooriyaarachchi
- Faculty of Health, School of Exercise and Nutrition Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
- Health and Wellness Unit, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Ranil Jayawardena
- Faculty of Health, School of Exercise and Nutrition Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
- Department of Physiology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Toby Pavey
- Faculty of Health, School of Exercise and Nutrition Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Neil A King
- Faculty of Health, School of Exercise and Nutrition Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
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Vallejo-Giraldo V, Sanchez-Medina L, Vasquez-Trespalacios EM. Overweight/obesity and physiological variables in workers exposed to rotating shift in a food production factory. Rev Bras Med Trab 2023; 21:e20221005. [PMID: 38313778 PMCID: PMC10835425 DOI: 10.47626/1679-4435-2022-1005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/31/2022] [Indexed: 02/06/2024] Open
Abstract
Introduction Shift work has been hypothesized as a potential risk factor for overweight/obesity or other metabolic changes. We examined the relationship between work shift and body mass index, waist-hip ratio, lipid profile, and glucose concentration in workers from a food manufacturing factory in Colombia. Objectives To investigate the association between shift work and changes in physiological variables in food manufacturing industry workers in Medellín, Colombia. Methods This cross-sectional study was conducted with 763 employees from a food manufacturing factory. Information was collected from the medical records from the occupational health provider institution in charge of workers' periodic follow-up. Results The study sample consisted of 637 (83.5%) men and 126 (16.5%) women. Mean age was 43.35 ± 9.8 years, and mean body mass index was 25.49 ± 3.23 kg/m2. After adjusting for potential confounders, logistic multivariate regression revealed a statistically significant association between shift work and higher body mass index and higher total cholesterol levels compared with dayshift (p < 0.05). Finally, the analysis of waist-hip ratio for each shift scheme and sex showed that this ratio was higher for rotating shift workers, with a significant difference for women. Conclusions Significant associations were observed between shift work and overweight/obesity and hypercholesterolemia. However, these findings should be confirmed by longitudinal studies.
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