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https://www.readbyqxmd.com/read/28912826/can-yesterday-s-smoking-research-inform-today-s-shiftwork-research-epistemological-consequences-for-exposures-and-doses-due-to-circadian-disruption-at-and-off-work
#1
Thomas C Erren, Philip Lewis
In 1950, landmark epidemiology studies by Wynder & Graham and Doll & Hill contributed to identifying smoking as a potent carcinogen. In 2007, IARC classified shiftwork involving circadian disruption (CD) as probably carcinogenic; however, epidemiological evidence in regards to the carcinogenicity of shiftwork that involves nightwork is conflicting. We hypothesize that shiftwork research is lacking chronobiological and methodological rigor and that lessons can be learned from comparison with smoking research...
2017: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/28820862/shiftwork-and-the-retinal-vasculature-diameters-among-police-officers
#2
Luenda E Charles, Ja K Gu, Claudia C Ma, Lisa M Grady, Anna Mnatsakanova, Michael E Andrew, Desta Fekedulegn, John M Violanti, Ronald Klein
OBJECTIVE: To investigate associations of central retinal arteriolar equivalent (CRAE), a measure of retinal arteriolar width, and central retinal venular equivalents (CRVE), a measure of retinal venular width, with shiftwork in 199 police officers (72.9% men). METHODS: Shiftwork (day, afternoon, night) was assessed using electronic payroll records. Four digital retinal images per officer were taken. Mean diameters of the retinal vasculature were compared across shifts using analysis of variance (ANOVA)/analysis of covariance (ANCOVA)...
August 17, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28709906/effects-of-feeding-time-on-daily-rhythms-of-neuropeptide-and-clock-gene-expression-in-the-rat-hypothalamus
#3
Dawei Wang, Anne-Loes Opperhuizen, Jane Reznick, Nigel Turner, Yan Su, Gregory J Cooney, Andries Kalsbeek
Shiftworkers are exposed to several adverse health conditions, one being eating at night. Food consumption at an unnatural time-of-day is thought to be one of the main factors responsible for the increased risk of developing metabolic diseases, such as obesity and diabetes mellitus. The underlying mechanism is considered to include disruption of the circadian organization of physiology, leading to disruption of metabolism. When food is consumed at night, the hypothalamus, a brain region central to homeostasis, receives contradicting input from the central clock and the systemic circulation...
July 11, 2017: Brain Research
https://www.readbyqxmd.com/read/28707432/mechanisms-of-breast-cancer-risk-in-shift-workers-association-of-telomere-shortening-with-the-duration-and-intensity-of-night-work
#4
Johanna Samulin Erdem, Heidi Ødegaard Notø, Øivind Skare, Jenny-Anne S Lie, Marte Petersen-Øverleir, Edyta Reszka, Beata Pepłońska, Shanbeh Zienolddiny
Occupational factors such as shiftwork and especially night work that involves disruption of the circadian rhythm may contribute to increased breast cancer risk. Circadian disruption may also affect telomere length (TL). While short TL generally is associated with increased cancer risk, its association with breast cancer risk is inconclusive. We suggest that working schedules might be an important factor in assessment of effects of TL on breast cancer risk. Moreover, telomere shortening might be a potential mechanism for night work-related breast cancer...
August 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28677140/coping-strategies-and-social-support-needs-of-experienced-and-inexperienced-nurses-performing-shiftwork
#5
Jane Gifkins, Rebecca Loudoun, Amy Johnston
AIM: The aim of this investigation was to compare perceptions of nurses exposed to short or longer term shift work and their experiences working under this type of scheduling. BACKGROUND: Shift work is a crucial component of nurses' working lives, ensuring continuous care for patients. This study fills a research gap around the personal experiences of shift working nurses and the strategies used to manage the impacts of shift work. DESIGN: Qualitative case study design...
July 5, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28650914/associations-of-rotational-shift-work-and-night-shift-status-with-hypertension-a-systematic-review-and-meta-analysis
#6
Sandhya Manohar, Charat Thongprayoon, Wisit Cheungpasitporn, Michael A Mao, Sandra M Herrmann
BACKGROUND: The reported risks of hypertension (HTN) in rotating shift and night shift workers are controversial. The objective of this meta-analysis was to assess the association between shift work status and HTN. METHODS: A literature search was performed using MEDLINE, EMBASE and Cochrane Database from inception through October 2016. Studies that reported odds ratios (OR) comparing the risk of HTN in shift workers were included. A prespecified subgroup analysis by rotating shift and night shift statuses were also performed...
June 24, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28637448/vitamin-d-levels-and-deficiency-with-different-occupations-a-systematic-review
#7
Daniel Sowah, Xiangning Fan, Liz Dennett, Reidar Hagtvedt, Sebastian Straube
BACKGROUND: Vitamin D deficiency is prevalent worldwide, but some groups are at greater risk. We aim to evaluate vitamin D levels in different occupations and identify groups vulnerable to vitamin D deficiency. METHODS: An electronic search conducted in Medline, Embase, the Cochrane Central Register of Controlled Trials, and CINAHL Plus with Full Text generated 2505 hits; 71 peer-reviewed articles fulfilled the inclusion criteria. Occupations investigated included outdoor and indoor workers, shiftworkers, lead/smelter workers, coalminers, and healthcare professionals...
June 22, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28539147/sunlight-exposure-work-hours-caffeine-consumption-and-sleep-duration-in-the-naval-environment
#8
Nita L Shattuck, Panagiotis Matsangas
BACKGROUND: Sailors in the U.S. Navy are habitual shiftworkers, often experiencing circadian misalignment due to their irregular work/rest schedules. This study assessed the effect of sunlight exposure, work hours, and caffeinated beverage consumption on the daily sleep duration of crewmembers of a U.S. Navy ship during a 2-wk underway period. METHODS: Working in an artificially lit area with no access to sunlight during work hours, U.S. Navy crew members (N = 91) used daily logs to report their daily activity, caffeinated beverage consumption, and exposure to sunlight while off-duty; sleep was assessed by wrist-worn actigraphy...
June 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28535713/the-relationship-between-shiftwork-and-violence-against-nurses-a-case-control-study
#9
Steve Sun, Susan Goodwin Gerberich, Andrew D Ryan
This study investigated the potential relationship between shiftwork and work-related physical assault (PA) against nurses who are at high risk of violence globally. Nurses (6,300), randomly selected from the licensing database and working in Minnesota, were surveyed regarding PA experiences. Through a nested case-control study, nurses who reported a PA in the previous 12 months and controls who were randomly selected from their assault-free working months, respectively, identified exposures experienced during the month prior to the assault month (cases) and the random non-PA months (controls)...
May 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28502410/performance-awareness-predicting-cognitive-performance-during-simulated-shiftwork-using-chronobiological-measures
#10
Drew M Morris, June J Pilcher, Joseph B Mulvihill, Melissa A Vander Wood
Physiological tracers of circadian rhythms and a performance awareness index were examined as predictors of cognitive performance during two sleep deprivation conditions common to occupational shiftwork. Study 1: Thirty-three sleep-deprived participants completed a simulated nightshift. Study 2: Thirty-two partially sleep-deprived participants completed a simulated dayshift. A standardized logic test was used to measure cognitive performance. Body temperature and heart rate were measured as chronobiological indices of endogenous circadian rhythms...
September 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28488901/association-of-shiftwork-and-immune-cells-among-police-officers-from-the-buffalo-cardio-metabolic-occupational-police-stress-study
#11
Michael D Wirth, Michael E Andrew, Cecil M Burchfiel, James B Burch, Desta Fekedulegn, Tara A Hartley, Luenda E Charles, John M Violanti
Shift workers suffer from a constellation of symptoms associated with disruption of circadian rhythms including sleep abnormalities, and abnormal hormone secretion (e.g. melatonin, cortisol). Recent, but limited, evidence suggests that shift workers have elevated levels of circulating white blood cells (WBCs) compared to their day working counterparts. Interestingly, recent reviews highlight the strong linkage between the immune system and circadian rhythms which includes, but is not limited to, circulating cell populations and functions...
May 10, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28486414/break-in-sedentary-behavior-reduces-the-risk-of-noncommunicable-diseases-and-cardiometabolic-risk-factors-among-workers-in-a-petroleum-company
#12
Chutima Jalayondeja, Wattana Jalayondeja, Keerin Mekhora, Petcharatana Bhuanantanondh, Asadang Dusadi-Isariyavong, Rujiret Upiriyasakul
Although prolonged sitting appears as a novel risk factor related to health outcomes for all ages, its association needs to be replicated in occupational conditions. This study explored the associations between sedentary behavior and four noncommunicable diseases (NCDs) as well as two cardiometabolic risk factors (CMRFs) among workers in a petroleum company, Thailand. All workers were invited to complete the online self-report questionnaire. Sedentary behavior was measured as the amount of time sitting at work, during recreation, and while commuting...
May 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28376169/re-night-shiftwork-and-breast-cancer-incidence-three-prospective-studies-and-meta-analysis-of-published-studies
#13
Thomas C Erren, Peter Morfeld, J Valérie Groß
No abstract text is available yet for this article.
April 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28282858/the-impact-of-shiftwork-on-skeletal-muscle-health
#14
REVIEW
Brad Aisbett, Dominique Condo, Evelyn Zacharewicz, Séverine Lamon
(1) Background: About one in four workers undertake shift rosters that fall outside the traditional 7 a.m.-6 p.m. scheduling. Shiftwork alters workers' exposure to natural and artificial light, sleep patterns, and feeding patterns. When compared to the rest of the working population, shiftworkers are at a greater risk of developing metabolic impairments over time. One fundamental component of metabolic health is skeletal muscle, the largest organ in the body. However, cause-and-effect relationships between shiftwork and skeletal muscle health have not been established; (2) Methods: A critical review of the literature was completed using online databases and reference lists; (3) Results: We propose a conceptual model drawing relationships between typical shiftwork consequences; altered light exposure, sleep patterns, and food and beverage consumption, and drivers of skeletal muscle health-protein intake, resistance training, and hormone release...
March 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28220912/shift-schedule-work-family-relationships-marital-communication-job-satisfaction-and-health-among-transport-service-shift-workers
#15
Irena Iskra-Golec, Lawrence Smith, Ewa Wilczek-Rużyczka, Patrycja Siemiginowska, Joanna Wątroba
OBJECTIVES: Existing research has documented that shiftwork consequences may depend on the shift system parameters. Fast rotating systems (1-3 shifts of the same kind in a row) and day work have been found to be less disruptive biologically and socially than slower rotating systems and afternoon and night work. The aim of this study was to compare day workers and shift workers of different systems in terms of rotation speed and shifts worked with regard to work-family and family-work positive and negative spillover, marital communication style, job satisfaction and health...
February 21, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28211842/assessment-of-upper-limb-musculoskeletal-pain-and-posture-in-workers-of-packaging-units-of-pharmaceutical-industries
#16
Yasser Labbafinejad, Hossein Danesh, Zahra Imanizade
BACKGROUND: Work-related musculoskeletal disorders are defined as the disabling or painful injury to the muscles, nerves or tendons that are caused by work or aggravated by it. Some studies confirm the association between working in packaging units in various industries and the pain in the upper limb, but also there are controversies about the possible risk factors among different working populations. OBJECTIVE: The present study aims to define the potential ergonomic risk factors for musculoskeletal pain in the upper limb...
2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28177907/genetic-variation-of-clock-genes-and-cancer-risk-a-field-synopsis-and-meta-analysis
#17
REVIEW
Clara Benna, Charlotte Helfrich-Förster, Senthilkumar Rajendran, Halenya Monticelli, Pierluigi Pilati, Donato Nitti, Simone Mocellin
BACKGROUND: The number of studies on the association between clock genes' polymorphisms and cancer susceptibility has increased over the last years but the results are often conflicting and no comprehensive overview and quantitative summary of the evidence in this field is available. RESULTS: Literature search identified 27 eligible studies comprising 96756 subjects (cases: 38231) and investigating 687 polymorphisms involving 14 clock genes. Overall, 1025 primary and subgroup meta-analyses on 366 gene variants were performed...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28166415/adverse-metabolic-and-mental-health-outcomes-associated-with-shiftwork-in-a-population-based-study-of-277-168-workers-in-uk-biobank
#18
Cathy A Wyse, Carlos A Celis Morales, Nicolas Graham, Yu Fan, Joey Ward, Anne M Curtis, Daniel Mackay, Daniel J Smith, Mark E S Bailey, Stephany Biello, Jason M R Gill, Jill P Pell
BACKGROUND: Reported associations between shiftwork and health have largely been based on occupation-specific, or single sex studies that might not be generalizable to the entire working population. The objective of this study was to investigate whether shiftwork was independently associated with obesity, diabetes, poor sleep, and well-being in a large, UK general population cohort. METHODS: Participants of the UK Biobank study who were employed at the time of assessment were included...
August 2017: Annals of Medicine
https://www.readbyqxmd.com/read/27995401/shiftwork-is-not-associated-with-increased-risk-of-nafld-findings-from-the-national-health-and-nutrition-examination-survey
#19
Maya Balakrishnan, Hashem B El-Serag, Fasiha Kanwal, Aaron P Thrift
AIMS: There is increased focus on the metabolic impact of shiftwork, especially given the significant number of employees who work nighttime or rotating shifts. Nonalcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome. We conducted a cross-sectional study to examine the association between shiftwork and the risk of NAFLD. METHODS: We used aggregated data from the 2005-2006, 2007-2008, and 2009-2010 cycles of the National Health and Nutrition Examination Survey (NHANES)...
February 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27870902/sleep-duration-exercise-shift-work-and-polycystic-ovarian-syndrome-related-outcomes-in-a-healthy-population-a-cross-sectional-study
#20
Audrey J R Lim, Zhongwei Huang, Seok Eng Chua, Michael S Kramer, Eu-Leong Yong
CONTEXT: Few studies have examined the associations between sleep duration, shiftwork, and exercise to the infrequent menstruation, hyperandrogenism, and ovarian morphological changes observed in women with polycystic ovarian syndrome (PCOS). OBJECTIVE: To examine whether lifestyle factors, including short sleep duration, insufficient exercise, and shiftwork, alone or in combination, are associated with the reproductive and metabolic abnormalities typical of PCOS in a healthy population...
2016: PloS One
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