Implication of corticotropic hormone axis in eating behaviour pattern in obese and type 2 diabetic participants

Emotional and external eating styles associated with obesity

BACKGROUND

Obesity is related to eating habits. Overeating is the most behavioural trait implicated in obesity; emotional, external and rigid restrained eating are three maladaptive eating habits that are associated to overeating.

OBJECTIVES

The current study assesses the eating styles of Algerian adults. It identifies and analyses differences in eating styles in a sample from adults with normal BMI and who have obesity. The study examines the relationship between eating styles and BMI.

METHODS

The sample consisted of 200 volunteers aged from 31 to 62 years old, 110 with obesity and 90 having normal BMI. The participants were recruited from hospital and university employees. They were questioned about their eating habits. The participants did not receive any treatment. To assess eating styles, participants completed the DEBQ.

RESULTS

The prevalence of women was in the majority, representing 61% (n = 122) in the total sample (63.63% (n = 70) with obesity, and 55.77% (n = 52) with normal BMI). The prevalence of men represents 39% (n = 78) in the total sample (36.36% (n = 40) with obesity, and 42.22% (n = 38) with normal BMI). Participants with obesity showed pathological eating styles. They scored higher on emotional and external eating styles than to normal BMI group. However, restraint eating showed a slight no significant increase. The mean scores ± standard deviations observed in each eating styles were: emotional eating (2.88 ± 0.99** vs. 1.71 ± 0.32), external eating (3.31 ± 0.68** vs. 1.96 ± 0.29), and retrained eating (1.81 ± 0.7^ns vs. 1.3 ± 0.30). The linear regression analysis showed an effect of emotional and external eating on BMI.

CONCLUSION

These results could be used to provide clinical information at the initial screening for obesity criteria, obesity prevention and treatment.

Association between food insecurity and emotional eating in Latinos and the mediating role of perceived stress

OBJECTIVE

To examine the association between food insecurity and emotional eating (EE) in US Latinxs and explore the mediating role of perceived stress.

DESIGN

Cross-sectional analysis. Food insecurity was measured with the six-item US Department of Agriculture Household Food Security Scale; EE with the Three-Factor Eating Questionnaire R18-V2; and perceived stress with Cohen's Perceived Stress Scale-10. Covariates included age, sex, education, marital status, household size and country of birth. Mediation was tested using the Baron and Kenny method and the mediated proportion was calculated. Analyses included multivariable linear regression and multinomial logistic regression.

SETTING

A largely Latinx city in Massachusetts, USA. Participants were recruited from a community health centre serving a large portion of this Latinx community.

PARTICIPANTS

Latinx individuals (n 580), aged 21-84 years.

RESULTS

Overall, 34·4 % were food insecure and 33·8 % experienced High EE. Food insecurity was associated (adjusted OR; 95 % CI) with higher odds of High EE (1·96; 1·28, 3·02) but not Low EE (1·27; 0·82, 1·99). Food insecurity was associated (β; 95 % CI) with higher perceived stress (5·69; 4·20, 7·19). Perceived stress was associated (adjusted OR; 95 % CI) with High EE (1·09; 1·06, 1·12) but not Low EE (1·00; CI 0·97, 1·02). When perceived stress was added in the main effects model, food insecurity was no longer associated (OR; 95 % CI) with High EE (1·31; 0·83, 2·07) and explained 69·9 % of the association between food insecurity and High EE.

CONCLUSIONS

The association between food insecurity and high EE among Latinxs may be largely mediated by perceived stress. Longitudinal studies are needed.

Association Between Cortisol, Insulin Resistance and Zinc in Obesity: a Mini-Review

Adipose tissue is considered an endocrine organ and its excess compromises the immune response and the metabolism of hormones and nutrients. Furthermore, visceral fat accumulation contributes to increased cortisol synthesis, which in turn induces metallothionein and Zip14 expression, which are proteins that contribute to reducing plasma zinc levels. Zinc plays a critical role in the secretion and signaling of insulin. Changes in the biochemical parameters of zinc, as observed in individuals who are obese, contribute to the manifestation of related disorders such as insulin resistance. Thus, the purpose of this review is to provide an update on the current information on the relationship between cortisol, zinc, and insulin resistance in obesity. The data in the literature provide evidence that cortisol affects zinc metabolism, and indicate possible repercussions on insulin signaling that might contribute to the development of resistance to the actions of insulin in obesity.

Association of Dysfunctional Eating Patterns and Metabolic Risk Factors for Cardiovascular Disease among Latinos

BACKGROUND

Latinos are at high risk for cardiovascular disease (CVD). Identifying behavioral factors associated with CVD risk in this population may provide novel targets for further research to reduce chronic disease disparities. Dysfunctional eating patterns (emotional eating [EE], uncontrolled eating [UE], and cognitive restraint of eating [CR]) may be associated with CVD risk but little is known about this relationship in Latinos.

OBJECTIVE

The aim of this study was to examine associations between dysfunctional eating patterns and metabolic risk factors for CVD in Latinos.

DESIGN

The study used a cross-sectional design.

PARTICIPANTS/SETTING

Latino individuals (n=602), aged 21 to 84 years, were enrolled in the study from September 2011 to May 2013 from a community health center that serves 80% to 85% of the Latino population in Lawrence, MA. Individuals with complete data were included in this analysis (n=578).

MEASURES

Dysfunctional eating patterns were measured with the Three Factor Eating Questionnaire-R18V2. CVD risk factors examined included obesity assessed by body mass index and waist circumference and diagnoses of type 2 diabetes, hypertension, and hyperlipidemia abstracted from electronic health records.

STATISTICAL ANALYSIS

Multivariable logistic and Poisson regressions adjusting for age, sex, perceived income, employment, education, physical activity, and perceived stress were performed. The no dysfunctional eating category (ie, no EE, no UE, or no CR) was used as the reference category in all analyses.

RESULTS

High EE was associated with greater odds of obesity (odds ratio [OR] 2.19, 95% CI 1.38 to 3.45) and central obesity (OR 2.97, 95% CI 1.81 to 4.87), and diagnosis of type 2 diabetes (OR 1.99, 95% CI 1.13 to 3.48) and hypertension (OR 2.01, 95% CI 1.16 to 3.48). High UE was associated with obesity (OR 1.96, 95% CI 1.20 to 3.21) and central obesity (OR 2.33, 95% CI 1.38 to 3.94). Low and high CR were associated with obesity (OR 2.26, 95% CI 1.43 to 3.56 and OR 2.77, 95% CI 1.75 to 4.37, respectively) and central obesity (OR 2.04, 95% CI 1.25 to 3.32 and 2.51, 95% CI 1.54 to 4.08, respectively) and diagnosis of type 2 diabetes (OR 1.83, 95% CI 1.05 to 3.16 and OR 2.73, 95% CI 1.58 to 4.70, respectively) and hyperlipidemia (OR 1.94, 95% CI 1.16 to 3.24 and OR 2.14, 95% CI 1.28 to 3.55, respectively). Lastly, high EE and low and high CR were associated with increased odds of having a greater number of metabolic CVD risk factors (incidence-rate ratio [IRR] 1.33, 95% CI 1.13 to 1.58; IRR 1.34, 95% CI 1.13 to 1.58; and IRR 1.44, 95% CI 1.22 to 1.71, respectively).

CONCLUSIONS

Dysfunctional eating patterns were positively associated with metabolic CVD risk factors in this Latino sample, with dose-response relationships for some associations. Future studies are needed to determine whether dysfunctional eating patterns influence CVD risk factors among Latinos.

Eat and Death: Chronic Over-Eating

Obesity-related co-morbidities decrease life quality, reduce working ability and lead to early death. The total amount of dietary fat consumption may be the most potent food-related risk factor for weight gain. In this respect, dietary intake of high-caloric, high-fat diets due to chronic over-eating and sedentary lifestyle lead to increased storage of triglycerides not only in adipose tissue but also ectopically in other tissues . Increased plasma concentrations of non-esterified free fatty acids and lipid-overloaded hypertrophic adipocytes may cause insulin resistance in an inflammation-independent manner. Even in the absence of metabolic disorders, mismatch between fatty acid uptake and utilization leads to the accumulation of toxic lipid species resulting in organ dysfunction. Lipid-induced apoptosis, ceramide accumulation, reactive oxygen species overproduction, endoplasmic reticulum stress, and mitochondrial dysfunction may play role in the pathogenesis of lipotoxicity. The hypothalamus senses availability of circulating levels of glucose, lipids and amino acids, thereby modifies feeding according to the levels of those molecules. However, the hypothalamus is also similarly vulnerable to lipotoxicity as the other ectopic lipid accumulated tissues. Chronic overnutrition most likely provides repetitive and persistent signals that up-regulate inhibitor of nuclear factor kappa B kinase beta subunit/nuclear factor kappa B (IKKβ/NF-κB) in the hypothalamus before the onset of obesity. However, the mechanisms by which high-fat diet induced peripheral signals affect the hypothalamic arcuate nucleus remain largely unknown. In this chapter, besides lipids and leptin, the role of glucose and insulin on specialized fuel-sensing neurons of hypothalamic neuronal circuits has been debated.

Protein Restriction During the Last Third of Pregnancy Malprograms the Neuroendocrine Axes to Induce Metabolic Syndrome in Adult Male Rat Offspring

Metabolic malprogramming has been associated with low birth weight; however, the interplay between insulin secretion disruption and adrenal function upon lipid metabolism is unclear in adult offspring from protein-malnourished mothers during the last third of gestation. Thus, we aimed to study the effects of a maternal low-protein diet during the last third of pregnancy on adult offspring metabolism, including pancreatic islet function and morphophysiological aspects of the liver, adrenal gland, white adipose tissue, and pancreas. Virgin female Wistar rats (age 70 d) were mated and fed a protein-restricted diet (4%, intrauterine protein restricted [IUPR]) from day 14 of pregnancy until delivery, whereas control dams were fed a 20.5% protein diet. At age 91 d, their body composition, glucose-insulin homeostasis, ACTH, corticosterone, leptin, adiponectin, lipid profile, pancreatic islet function and liver, adrenal gland, and pancreas morphology were assessed. The birth weights of the IUPR rats were 20% lower than the control rats (P < .001). Adult IUPR rats were heavier, hyperphagic, hyperglycemic, hyperinsulinemic, hyperleptinemic, and hypercorticosteronemic (P < .05) with higher low-density lipoprotein cholesterol and lower high-density lipoprotein cholesterol, adiponectin, ACTH, and insulin sensitivity index levels (P < .01). The insulinotropic action of glucose and acetylcholine as well as muscarinic and adrenergic receptor function were impaired in the IUPR rats (P < .05). Maternal undernutrition during the last third of gestation disrupts the pancreatic islet insulinotropic response and induces obesity-associated complications. Such alterations lead to a high risk of metabolic syndrome, characterized by insulin resistance, visceral obesity, and lower high-density lipoprotein cholesterol.