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"metabolic syndrome", "shift work"

Motahareh Kheradmand, Zhila Maghbooli, Sedigheh Salemi, Mahnaz Sanjari
BACKGROUND: The insulin resistance syndrome is one of the major contributors of metabolic syndrome, diabetes Type 2 and atherosclerotic cardiovascular disease. A common mutation (677C to T; Ala to Val) in the methylenetetrahydrofolate reductase (MTHFR) gene is associated with decreased specific MTHFR activity and elevation of the homocysteine. The aim of this study is investigation of association between MTHFR 677C > T polymorphism with insulin resistance by using HOMA (Homeostasis Model Assessment) index in nurses who are potentially prone to develop insulin resistance because of unfavorable effects of shift work...
2017: Journal of Diabetes and Metabolic Disorders
David Rabinerson, Lizy Markovitch, Rinnat Gabbay-Ben-Ziv
Work in repeated changing shifts, in general, and night-shifts, in particular, is considered a necessity, encompassing many professions, among them physicians and nurses. This type of work has been shown to adversely affect the normal function of the human body circadian rhythm. This negative influence in turn, is considered to increase characteristic types of morbidity such as metabolic syndrome, type 2 diabetes and increased rate of cardiovascular morbidity. Women working in night-shifts in particular, have been found to face increased rates of breast cancer, as well as menstrual disturbances and decreased fertility...
July 2016: Harefuah
Kyoung Hwa Yu, Yu Hyeon Yi, Yun Jin Kim, Byung Mann Cho, Sang Yeoup Lee, Jeong Gyu Lee, Dong Wook Jeong, So Yeon Ji
BACKGROUND: Shift work is associated with health problems, including metabolic syndrome. This study investigated the association between shift work and metabolic syndrome in young workers. METHODS: A total of 3,317 subjects aged 20-40 years enrolled in the 2011-2012 Korean National Health and Nutrition Examination Survey were divided into shift and day workers. We conducted a cross-sectional study and calculated odds ratios using multivariate logistic regression analysis in order to examine the association between shift work and metabolic syndrome...
March 2017: Korean Journal of Family Medicine
W W Tigbe, M H Granat, N Sattar, M E J Lean
BACKGROUND: The relationship between metabolic risk and time spent sitting, standing and stepping has not been well established. The present study aimed to determine associations of objectively measured time spent siting, standing and stepping, with coronary heart disease (CHD) risk. METHODS: A cross-sectional study of healthy non-smoking Glasgow postal workers, n=111 (55 office workers, 5 women, and 56 walking/delivery workers, 10 women), who wore activPAL physical activity monitors for 7 days...
May 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Thunyarat Anothaisintawee, Dumrongrat Lertrattananon, Sangsulee Thamakaison, Kristen L Knutson, Ammarin Thakkinstian, Sirimon Reutrakul
The circadian system is known to play a role in glucose metabolism. Chronotype reflects the interindividual variability in the phase of entrainment. Those with later chronotype typically prefer later times in the day for different activities such as sleep or meals. Later chronotype has been shown to be associated with metabolic syndrome, increased diabetes risk and poorer glycemic control in type 2 diabetes patients. In addition, "social jetlag", a form of circadian misalignment due to a mismatch between social rhythms and the circadian clock, has been shown to be associated with insulin resistance...
2017: Chronobiology International
Amy C Reynolds, Jessica L Paterson, Sally A Ferguson, Dragana Stanley, Kenneth P Wright, Drew Dawson
Prevalence and impact of metabolic disease is rising. In particular, overweight and obesity are at epidemic levels and are a leading health concern in the Western world. Shift work increases the risk of overweight and obesity, along with a number of additional metabolic diseases, including metabolic syndrome and type 2 diabetes (T2D). How shift work contributes to metabolic disease has not been fully elucidated. Short sleep duration is associated with metabolic disease and shift workers typically have shorter sleep durations...
July 11, 2016: Sleep Medicine Reviews
Tiffany Fleet, Erin Stashi, Bokai Zhu, Kimal Rajapakshe, Kathrina L Marcelo, Nicole M Kettner, Blythe K Gorman, Cristian Coarfa, Loning Fu, Bert W O'Malley, Brian York
Circadian rhythmicity is a fundamental process that synchronizes behavioral cues with metabolic homeostasis. Disruption of daily cycles due to jet lag or shift work results in severe physiological consequences including advanced aging, metabolic syndrome, and even cancer. Our understanding of the molecular clock, which is regulated by intricate positive feedforward and negative feedback loops, has expanded to include an important metabolic transcriptional coregulator, Steroid Receptor Coactivator-2 (SRC-2), that regulates both the central clock of the suprachiasmatic nucleus (SCN) and peripheral clocks including the liver...
October 2016: Journal of Biological Rhythms
Nafiseh Shokri Mashhadi, Saeed Saadat, Mohammad Reza Afsharmanesh, Saeed Shirali
AIMS: The circadian system influences on health and metabolic function that can cause raising some risk factor of metabolic syndrome. Few studies have examined data that incorporate the full complexity of daily beverage intake pattern on lipid profiles. The purpose of this study was to investigate relation between daily water and beverage intake of adults working in day or shift work and lipid profile. MATERIALS AND METHODS: Total beverages intake was estimated in shift and administrative staff of Ahvaz International Airport, Iran...
October 2016: Diabetes & Metabolic Syndrome
Anne B Hansen, Leslie Stayner, Johnni Hansen, Zorana J Andersen
OBJECTIVES: Night shift work has been associated with poor sleep, weight gain, metabolic syndrome, which are recognised risk factor for diabetes. However, only a few studies have examined the effect of shift work on diabetes risk. Here, we study the association between shift work and incidence of diabetes in Danish nurses. METHODS: We used the Danish Nurse Cohort with 28,731 participating female nurses recruited in 1993 (19,898) or 1999 (8833), when self-reported baseline information on diabetes prevalence, lifestyle and working time were collected, and followed them in the Danish Diabetes Register for incidence of diabetes until 2013...
April 2016: Occupational and Environmental Medicine
Heath G Gasier, Colin R Young, Erin Gaffney-Stomberg, Douglas C McAdams, Laura J Lutz, James P McClung
Confined space, limited exercise equipment, rotating shift work and reduced sleep may affect cardiometabolic health in submariners. To test this hypothesis, 53 male U.S. Submariners (20-39 years) were studied before and after a 3-month routine submarine patrol. Measures included anthropometrics, dietary and physical activity, biomarkers of cardiometabolic health, energy and appetite regulation, and inflammation. Before deployment, 62% of submariners had a body fat % (BF%) ≥ 25% (obesity), and of this group, 30% met the criteria for metabolic syndrome...
February 9, 2016: Nutrients
Eman Alefishat, Rana Abu Farha
OBJECTIVE: Shift work is associated with higher risk of metabolic disturbances and cardiovascular diseases. There are contradictory reports on the effect of shift work on lipid parameters in the literature. No studies have investigated any possible association between shift work and the ratio of serum triglyceride to high density lipoprotein cholesterol (TG/HDL-C ratio). This ratio can be used as a predictor for insulin resistance. The main aim of the present cross-sectional study was to investigate the association between shift work and serum TG/HDL-C ratio, TG level, and HDL-C level...
November 2015: Metabolic Syndrome and related Disorders
E F Chernikova
The article provides an overview of domestic and foreign works on the impact of the replaceable labor on the efficiency, general state of health, the health and the dream of workers. Many hours shifts and overtime work were found to disturb likely familiar rhythms (sleep, wakefulness, performance), change the metabolic and hormonal metabolisms, reducing the recovery period between duties, contribute to more rapid development of fatigue. The consequence of circadian dyschrony may be the development of diseases of the cardiovascular system and cancer incidence...
May 2015: Gigiena i Sanitariia
Jen-Hung Chang, Pai-Tsang Huang, Yen-Kuang Lin, Ching-En Lin, Chien-Min Lin, Ying-Hua Shieh, Ying-Chin Lin
OBJECTIVES: This study's objective was to examine association between sleep duration and sleep quality, and metabolic syndrome (MetS) and its components in Taiwanese male police officers. MATERIAL AND METHODS: Male police officers who underwent annual health examinations were invited to join the study and eventually a total of 796 subjects was included in it. The study subjects were divided into 5 groups according to the length (duration) of sleep: < 5, 5-5.9, 6-6...
2015: International Journal of Occupational Medicine and Environmental Health
Yu Cheng Lin, I-Chun Hsieh, Pau-Chung Chen
OBJECTIVES: To establish a practical method for assessing the general metabolic health conditions among different employee groups, this study utilized the total count of metabolic syndrome (MetS) elements as a parameter, and performed a retrospective analysis comparing changes of MetS component count (MSC) of 5 years among day-time work (DW) and day-andnight rotating shift work (RSW) employees. MATERIAL AND METHODS: The data of personal histories, physical examinations, blood tests, abdominal sonographic examinations and occupational records were collected from a cohort of workers in an electronics manufacturing company...
2015: International Journal of Occupational Medicine and Environmental Health
Shahmir Sohail, Lei Yu, David A Bennett, Aron S Buchman, Andrew S P Lim
Circadian rhythms - near 24 h intrinsic biological rhythms - modulate many aspects of human physiology and hence disruption of circadian rhythms may have an important impact on human health. Experimental work supports a potential link between irregular circadian rhythms and several key risk factors for cardiovascular disease including hypertension, obesity, diabetes and dyslipidemia, collectively termed the metabolic syndrome. While several epidemiological studies have demonstrated an association between shift-work and the components of the metabolic syndrome in working-age adults, there is a relative paucity of data concerning the impact of non-occupational circadian irregularity in older women and men...
2015: Chronobiology International
Simon N Archer, Henrik Oster
The mammalian circadian system is a multi-oscillator, hierarchically organised system where a central pacemaker synchronises behavioural, physiological and gene expression rhythms in peripheral tissues. Epidemiological studies show that disruption of this internal synchronisation by short sleep and shift work is associated with adverse health outcomes through mechanisms that remain to be elucidated. Here, we review recent animal and human studies demonstrating the profound effects of insufficient and mistimed sleep on the rhythms of gene expression in central and peripheral tissues...
October 2015: Journal of Sleep Research
Vincent L Wester, Elisabeth F C van Rossum
Cortisol measurements in blood, saliva and urine are frequently used to examine the hypothalamus-pituitary-adrenal (HPA) axis in clinical practice and in research. However, cortisol levels are subject to variations due to acute stress, the diurnal rhythm and pulsatile secretion. Cortisol measurements in body fluids are not always a reflection of long-term cortisol exposure. The analysis of cortisol in scalp hair is a relatively novel method to measure cumulative cortisol exposure over months up to years. Over the past years, hair cortisol concentrations (HCC) have been examined in association with a large number of somatic and mental health conditions...
October 2015: European Journal of Endocrinology
Anne Briançon-Marjollet, Martin Weiszenstein, Marion Henri, Amandine Thomas, Diane Godin-Ribuot, Jan Polak
Modern lifestyle has profoundly modified human sleep habits. Sleep duration has shortened over recent decades from 8 to 6.5 hours resulting in chronic sleep deprivation. Additionally, irregular sleep, shift work and travelling across time zones lead to disruption of circadian rhythms and asynchrony between the master hypothalamic clock and pacemakers in peripheral tissues. Furthermore, obstructive sleep apnea syndrome (OSA), which affects 4 - 15% of the population, is not only characterized by impaired sleep architecture but also by repetitive hemoglobin desaturations during sleep...
2015: Diabetology & Metabolic Syndrome
Jae Uk Jeong, Man Joong Jeon, Joon Sakong
OBJECTIVES: This study was conducted in order to evaluate the association between the working hours of Korean employees and the metabolic syndrome and the effects of long working hours on metabolic syndrome based on the 5th Korean National Health and Nutrition Examination Survey (2010-2012). METHODS: Based on the 5th Korean National Health and Nutrition Examination Survey (2010-2012), 4,456 Korean employees without shift work, aged over 15, who work 30 hours or more per week were targeted in this study...
2014: Annals of Occupational and Environmental Medicine
Yanjun Guo, Yi Rong, Xiji Huang, Hanpeng Lai, Xin Luo, Zhihong Zhang, Yuewei Liu, Meian He, Tangchun Wu, Weihong Chen
BACKGROUND: Shift work is indicated to be associated with adverse metabolic disorders. However, potential effects of shift work on metabolic syndrome (MetS) and its components have not been well established. METHODS: In total, 26,382 workers from Dongfeng-Tongji Cohort were included in this study. Information on shift work history was gathered through questionnaires and metabolic traits were measured. Logistic regression models were used to calculate the odds ratio (OR) and 95% confidence interval (CI) for long-term shift work related with MetS and each component, respectively...
2015: PloS One
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