scholarly journals Working in Shifts and the Metabolic Syndrome: Epidemiological Evidence and Physiopathological Mechanisms

2018 ◽  
Vol 24 (3) ◽  
pp. 144-151
Author(s):  
Oţelea Marina Ruxandra ◽  
Raşcu Agripina ◽  
Ion Ileana ◽  
Arghir Ioan Anton ◽  
Badiu Adela ◽  
...  

Abstract The Metabolic syndrome (MetS) is considered as an association of the abdominal obesity, abnormal metabolism of the lipids and glucose (high level of triglycerides, low level of HDL-cholesterol and high level of glycemia) and high values of blood pressure, determined by an underlying mechanism of insulin resistance. As a result of environmental-gene interaction, MetS is associated with unhealthy nutrition, smoking, alcohol abuse, lack of physical activity, shorter sleep duration and desynchronization of the circadian rhytm caused by working in shifts. The aim of this article is to review the effects of working in shifts on the MetS through the epidemiological evidence and the perspective of the physiopathological mechanisms.

2014 ◽  
Vol 112 (11) ◽  
pp. 1826-1836 ◽  
Author(s):  
Camilla T. Damsgaard ◽  
Stine-Mathilde Dalskov ◽  
Rikke P. Laursen ◽  
Christian Ritz ◽  
Mads F. Hjorth ◽  
...  

An increasing number of children are exhibiting features of the metabolic syndrome (MetS) including abdominal fatness, hypertension, adverse lipid profile and insulin resistance. Healthy eating practices during school hours may improve the cardiometabolic profile, but there is a lack of evidence. In the present study, the effect of provision of school meals rich in fish, vegetables and fibre on a MetS score (primary outcome) and on individual cardiometabolic markers and body composition (secondary outcomes) was investigated in 834 Danish school children. The study was carried out as a cluster-randomised, controlled, non-blinded, cross-over trial at nine schools. Children aged 8–11 years received freshly prepared school lunch and snacks or usual packed lunch from home (control) each for 3 months. Dietary intake, physical activity, cardiometabolic markers and body composition were measured at baseline and after each dietary period. The school meals did not affect the MetS score (P= 1·00). However, it was found that mean arterial pressure was reduced by 0·4 (95 % CI 0·0, 0·8) mmHg (P= 0·04), fasting total cholesterol concentrations by 0·05 (95 % CI 0·02, 0·08) mmol/l (P= 0·001), HDL-cholesterol concentrations by 0·02 (95 % CI 0·00, 0·03) mmol/l, TAG concentrations by 0·02 (95 % CI 0·00, 0·04) mmol/l (bothP< 0·05), and homeostasis model of assessment-insulin resistance by 0·10 (95 % CI 0·04, 0·16) points (P= 0·001) compared with the control diet in the intention-to-treat analyses. Waist circumference increased 0·5 (95 % CI 0·3, 0·7) cm (P< 0·001), but BMIz-score remained unaffected. Complete-case analyses and analyses adjusted for household educational level, pubertal status and physical activity confirmed the results. In conclusion, the school meals did not affect the MetS score in 8–11-year-olds, as small improvements in blood pressure, TAG concentrations and insulin resistance were counterbalanced by slight undesired effects on waist circumference and HDL-cholesterol concentrations.


2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Saeid Golbidi ◽  
Ismail Laher

The lack of adequate physical activity and obesity created a worldwide pandemic. Obesity is characterized by the deposition of adipose tissue in various parts of the body; it is now evident that adipose tissue also acts as an endocrine organ capable of secreting many cytokines that are though to be involved in the pathophysiology of obesity, insulin resistance, and metabolic syndrome. Adipokines, or adipose tissue-derived proteins, play a pivotal role in this scenario. Increased secretion of proinflammatory adipokines leads to a chronic inflammatory state that is accompanied by insulin resistance and glucose intolerance. Lifestyle change in terms of increased physical activity and exercise is the best nonpharmacological treatment for obesity since these can reduce insulin resistance, counteract the inflammatory state, and improve the lipid profile. There is growing evidence that exercise exerts its beneficial effects partly through alterations in the adipokine profile; that is, exercise increases secretion of anti-inflammatory adipokines and reduces proinflammatory cytokines. In this paper we briefly describe the pathophysiologic role of four important adipokines (adiponectin, leptin, TNF-α, and IL-6) in the metabolic syndrome and review some of the clinical trials that monitored these adipokines as a clinical outcome before and after exercise.


2014 ◽  
Vol 32 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Amanda Oliva Gobato ◽  
Ana Carolina J. Vasques ◽  
Mariana Porto Zambon ◽  
Antonio de Azevedo Barros Filho ◽  
Gabriel Hessel

Objective: To verify the prevalence of metabolic syndrome and insulin resistance in obese adolescents and its relationship with different body composition indicators. Methods: A cross-sectional study comprising 79 adolescents aged ten to 18 years old. The assessed body composition indicators were: body mass index (BMI), body fat percentage, abdominal circumference, and subcutaneous fat. The metabolic syndrome was diagnosed according to the criteria proposed by Cook et al. The insulin resistance was determined by the Homeostasis Model Assessment for Insulin Resistance (HOMA-IR) index for values above 3.16. The analysis of ROC curves was used to assess the BMI and the abdominal circumference, aiming to identify the subjects with metabolic syndrome and insulin resistance. The cutoff point corresponded to the percentage above the reference value used to diagnose obesity. Results: The metabolic syndrome was diagnosed in 45.5% of the patients and insulin resistance, in 29.1%. Insulin resistance showed association with HDL-cholesterol (p=0.032) and with metabolic syndrome (p=0.006). All body composition indicators were correlated with insulin resistance (p<0.01). In relation to the cutoff point evaluation, the values of 23.5 and 36.3% above the BMI reference point allowed the identification of insulin resistance and metabolic syndrome. The best cutoff point for abdominal circumference to identify insulin resistance was 40%. Conclusions: All body composition indicators, HDL-cholesterol and metabolic syndrome showed correlation with insulin resistance. The BMI was the most effective anthropometric indicator to identify insulin resistance.


2020 ◽  
Author(s):  
Izabela Zając-Gawlak ◽  
Jana Pelclová ◽  
Dorota Groffik ◽  
Miroslava Pridalová ◽  
Agnieszka Nawrat-Szołtysik ◽  
...  

Abstract Background: There are few studies assessing the health of older women with respect to their physical activity. This study sought to determine whether changes in the physical activity of 59 women aged 60+ measured seven years apart and the risk of the participants developing the metabolic syndrome (MetS) were related to each other. Methods: The physical activity of the participants was measured using the accelerometers in 2009 and 2016. Their risk for the MetS was assessed as per the NCEP-ATP III criteria. Results: The number of steps the participants took daily increased between 2009 and 2016 from 10.944±3,560 to 11.652±4865. Women who maintained a high level of physical activity between the measurements, or increased it, had a significantly higher mean concentration of high-density cholesterol in 2016 (80.3 vs. 64.5 mg/dL and 79.2 vs. 66.9mg/dL, respectively). In the latter, a lower concentration of triglycerides (TG) (123.8 vs. 158.3mg/dL) was also observed. In 2016, only 7 women met 3 or more criteria for MetS compared with 24 in 2009; at the same time, the mean number of the MetS criteria met by a participant fell from 2.2±1.4 to 1.4±1.0.Conclusions: The number of MetS criteria that the participants met in 2016 was lower than in 2007, probably due to the high number of steps taken daily. Therefore, their risk of developing cardiovascular diseases was lower too.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 5159-5159
Author(s):  
J. P. Nobes ◽  
S. E. Langley ◽  
R. W. Laing

5159 Background: The association between androgen deprivation therapy (ADT) for prostate cancer and metabolic syndrome has been reported, with insulin resistance as the key to its development. This is the first study to investigate the effect of metformin and lifestyle changes on the development of ADT-related metabolic syndrome. Methods: Forty men with any stage of prostate cancer, due to receive ADT with a GnRH agonist, were recruited to a prospective randomised pilot study. The control arm comprised 20 patients receiving ADT alone. Men in the intervention arm (n=20) received ADT with 6 months of metformin, a low glycaemic index diet and a regular aerobic exercise programme. All patients were investigated pre-treatment and at 6 months for the metabolic syndrome, insulin resistance, and related biochemical and physical parameters. Results: After 6 months a significant reduction in metabolic syndrome cases (NCEP ATP III definition) was seen in the intervention arm (p=0.042), with an equal number seen in the control arm as at baseline. There was an increase in HDL cholesterol in both arms, which reached greater significance in the intervention arm (p=0.008) than the controls (p=0.015). The table shows an improvement in abdominal girth, weight, body mass index, and systolic blood pressure in the intervention arm, when measured as a % change over 6 months. Biochemical markers of insulin resistance did not significantly differ between each group. Conclusions: ADT is widely used in prostate cancer, but metabolic complications may be responsible for an increased cardiovascular mortality. The preventative role of metformin and lifestyle changes has been evaluated in this study, showing potential beneficial effects. However, the anticipated increased incidence of insulin resistance and metabolic syndrome has not been demonstrated in men receiving ADT alone, which may be due to small study size. Further studies will ascertain whether overall survival can ultimately be improved by this approach. [Table: see text] No significant financial relationships to disclose.


2004 ◽  
Vol 29 (6) ◽  
pp. 808-829 ◽  
Author(s):  
Lindsay E. Robinson ◽  
Terry E. Graham

The metabolic syndrome comprises an array of cardiovascular disease (CVD) risk factors such as abdominal obesity, dyslipidemia, hypertension, and glucose intolerance. Insulin resistance and/or increased abdominal (visceral) obesity have been suggested as potential etiological factors. More recently, increasing evidence has associated insulin resistance and subclinical inflammation involving cytokines derived from adipose tissue, or adipocytokines. Despite the fact that precise mechanisms have yet to be established, there is a significant role for both diet and physical activity to improve the many factors associated with the metabolic syndrome, including modulation of various adipocytokines. Although both diet and physical activity have been studied for their ability to modify cytokines in more traditional inflammatory conditions, such as rheumatoid arthritis, they have been less studied in relation to inflammation as an underlying cause of the metabolic syndrome and/or CVD. A more thorough understanding of the clustering of metabolic abnormalities and their underlying etiology will help to define diet and physical activity guidelines for preventing and treating the metabolic syndrome, an important aspect of CVD prevention. This paper will address potential underlying causes of the metabolic syndrome, with a focus on the putative mechanistic role of adipocytokines, and will discuss the impact of diet and physical activity on the metabolic syndrome. Key words: insulin resistance syndrome, obesity, adipose tissue, skeletal muscle, cytokines, TNF-α, IL-6, PAI-1, inflammation, nutrition, exercise


2019 ◽  
Vol 28 (1) ◽  
pp. 9-20
Author(s):  
Hanna Alajõe ◽  
Kadri Suija ◽  
Anneli Rätsep ◽  
Ruth Kalda ◽  
Margus Lember

The aim of the current study was to analyse the food choices and physical activity of obese adult Estonian persons, and associations with the prevalence of metabolic syndrome. The study was carried out on 76 patients aged over 35 years whose body mass index was ≥30 kg/m2. The subjects were recruited through family physicians. The subjects’ consumption of three food groups (fruit, vegetables, whole-grain products) and physical activity based on the IPAQ questionnaire was compared with the prevalence of metabolic syndrome based on five indicators (waist circumference, triglycerides, HDL- cholesterol and fasting plasma glucose, blood pressure). The prevalence of metabolic syndrome was found to be 50%. The results of the study did not show statistically significant correlations between prevalence of metabolic syndrome and age or gender. Neither were there any significant age or gender differences in the subjects’ nutritional and activity behaviour. Comparison of the nutritional behaviour of persons with and without the metabolic syndrome showed that daily consumers of fruit had a 4.48 times lower risk of metabolic syndrome than those who ate fruit more seldom. No statistically significant correlation was found between physical activity and prevalence of metabolic syndrome. Based on the current study, the daily consumption of fruit can be an essential protective factor against metabolic syndrome in obese patients and provides a simple recommendation physicians can give their patients to follow.


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