Effect of -55CT Polymorphism of UCP3 on Insulin Resistance and Cardiovascular Risk Factors after a High Protein/Low Carbohydrate versus a Standard Hypocaloric Diet

2016 ◽  
Vol 68 (3) ◽  
pp. 157-163 ◽  
Author(s):  
Daniel Antonio de Luis ◽  
Rocío Aller ◽  
Olatz Izaola ◽  
Enrique Romero

Background: The C/C genotype of a polymorphism in the uncoupling protein3 (UCP3) promoter (-55C->T) (rs1800849) is associated with an increased body mass index. Objective: The aim of our study was to investigate the effect of polymorphism on the UCP3 promoter (-55C->T) on insulin resistance and cardiovascular risk factors secondary to a high protein/low carbohydrate vs. a standard hypocaloric diets (1,000 kcal/day). Design: A population of 283 obese subjects was analyzed in a randomized trial. A nutritional evaluation was performed at the beginning and at the end of a 9-month period in which subjects received 1 of 2 diets (diet HP: high protein/low carbohydrate vs. diet S: standard diet). Results: Weight improvement was higher in non-T carriers. With both diets and only in wild genotype (diet HP vs. diet S), total cholesterol (-9.7 ± 4.0 vs. -11.1 ± 2.0 mg/dl; p > 0.05) and low density lipoprotein (LDL) cholesterol (-8.3 ± 3.0 vs. -5.5 ± 2.7 mg/dl; p > 0.05) decreased. The improvement in these parameters was similar in subjects with diet HP than HS. With diet HP and only in wild genotype, glucose (-5.2 ± 2.2 mg/dl; p < 0.05), triglycerides (-15.5 ± 3.9 mg/dl; p < 0.05), insulin levels (-3.9 ± 3.1 UI/l; p < 0.05) and homeostasis model assessment (HOMA-R; -0.6 ± 0.1 units; p < 0.05) decreased. Conclusion: Carriers of T allele have a different response than non-carrier subjects, with a lack of decrease of LDL cholesterol, glucose, insulin levels and HOMA-R. The weight loss was lower in T carriers. HP diet showed a better metabolic response than S diet in 55CC homozygous.

2016 ◽  
Vol 115 (9) ◽  
pp. 1661-1668 ◽  
Author(s):  
Ala’a Alkerwi ◽  
Nicolas Sauvageot ◽  
Georgina E. Crichton ◽  
Merrill F. Elias ◽  
Saverio Stranges

AbstractThis study examined the association of chocolate consumption with insulin resistance and serum liver enzymes in a national sample of adults in Luxembourg. A random sample of 1153 individuals, aged 18–69 years, was recruited to participate in the cross-sectional Observation of Cardiovascular Risk Factors in Luxembourg study. Chocolate consumption (g/d) was obtained from a semi-quantitative FFQ. Blood glucose and insulin levels were used for the homoeostasis model assessment of insulin resistance (HOMA-IR). Hepatic biomarkers such as serum γ-glutamyl-transpeptidase (γ-GT), serum aspartate transaminase and serum alanine transaminase (ALT) (mg/l) were assessed using standard laboratory assays. Chocolate consumers (81·8 %) were more likely to be younger, physically active, affluent people with higher education levels and fewer chronic co-morbidities. After excluding subjects taking antidiabetic medications, higher chocolate consumption was associated with lower HOMA-IR (β=−0·16, P=0·004), serum insulin levels (β=−0·16, P=0·003) and γ-GT (β=−0·12, P=0·009) and ALT (β=−0·09, P=0·004), after adjustment for age, sex, education, lifestyle and dietary confounding factors, including intakes of fruits and vegetables, alcohol, polyphenol-rich coffee and tea. This study reports an independent inverse relationship between daily chocolate consumption and levels of insulin, HOMA-IR and liver enzymes in adults, suggesting that chocolate consumption may improve liver enzymes and protect against insulin resistance, a well-established risk factor for cardiometabolic disorders. Further observational prospective research and well-designed randomised-controlled studies are needed to confirm this cross-sectional relationship and to comprehend the role and mechanisms that different types of chocolate may play in insulin resistance and cardiometabolic disorders.


2015 ◽  
Vol 66 (2-3) ◽  
pp. 125-131 ◽  
Author(s):  
Daniel Antonio de Luis ◽  
Rocío Aller ◽  
Olatz Izaola ◽  
G. Díaz Soto ◽  
J.J. López Gómez ◽  
...  

Objective: We decided to investigate the role of this polymorphism on cardiovascular risk factors and weight loss secondary to a high-protein/low-carbohydrate vs. a standard hypocaloric diet (1,000 kcal/day) over a period of 9 months. Material and methods: A nutritional evaluation was performed at the beginning and at the end of a 9-month period in which subjects received 1 of 2 diets (diet HP: high protein/low carbohydrate vs. S: standard diet). Results: One hundred and four patients (54.7%) had the genotype G1359G and 86 (45.3%) patients had G1359A (77 patients, 25.8%) or A1359A (9 patients, 3.7%) (A-allele-carriers). In subjects with both genotypes, the body mass index, weight, fat mass, waist circumference and systolic blood pressures decreased with both diets. After the diet type HP and in subjects with both genotypes, the glucose, leptin, total cholesterol, LDL-cholesterol, insulin and HOMA-R levels decreased. After diet S and in all subjects, the total cholesterol, LDL cholesterol and leptin levels decreased, too. Conclusion: Our interventional study didn't show a relationship between the rs1049353 CNR-1 polymorphism and body weight response after two different hypocaloric (low carbohydrate/high protein vs. standard) diets over a period of 9 months. However, a low-carbohydrate/high-protein diet for 9 months improved glucose metabolism in subjects with both genotypes.


Author(s):  
Nijole Kazukauskiene ◽  
Aurelija Podlipskyte ◽  
Giedrius Varoneckas ◽  
Narseta Mickuviene

Background: Individuals with insulin resistance (IR) have a high risk of diabetes or metabolic syndrome, and they are more likely to have depression. Furthermore, IR by itself is a major cardiovascular risk factor in healthy persons. Thus, we aimed to investigate IR in association with thyroid function, psychoemotional state, and cardiovascular risk factors among 45–84-year-old citizens of Palanga. Methods: A randomized epidemiological study was performed with 850 subjects. All participants were evaluated for sociodemographic, clinical, and cardiovascular risk factors and biochemical analysis. IR was evaluated by the homeostasis model assessment of IR (HOMA-IR). Results: All study participants were stratified into groups without IR (HOMA-IR ≤ 2.7) and with IR (HOMA-IR > 2.7). The analysis of parameters between the two study groups showed some statistically significant relationships between IR and cardiovascular risk factors. The predictable accuracy was presented using receiver performance characteristic curves for HOMA-IR scores in women and men separately. If the HOMA-IR score is higher than 3.45, individuals are significantly more likely to have type 2 diabetes mellitus (T2DM). Conclusions: An increase of fasting glucose and more frequent incidence of metabolic syndrome, diabetes, and cardiovascular diseases in subjects with IR are associated with the prevalence of cardiovascular risk factors. There was no significant association between thyroid function and HOMA-IR. HOMA-IR cut-offs could predict the presence of T2DM.


2004 ◽  
pp. 715-718 ◽  
Author(s):  
KM Choi ◽  
J Lee ◽  
KW Lee ◽  
JA Seo ◽  
JH Oh ◽  
...  

OBJECTIVE: Ghrelin is a recently discovered peptide, which is produced primarily in the stomach. This orexigenic peptide participates not only in the induction of mealtime hunger but also in long-term body weight regulation and energy homeostasis. Adiponectin is a protein secreted by adipocytes, and has been proposed to mediate obesity-related insulin resistance. Moreover, concentrations of adiponectin are reduced in individuals with obesity, insulin resistance and cardiovascular disease. However, human data are sparse about the direct relationship between adiponectin, ghrelin and cardiovascular risk factors including insulin resistance. DESIGN: Three hundred and thirty-eight elderly Korean women (mean age+/-s.d., 72.3+/-5.5 years) were included in the present study. METHODS: Plasma ghrelin and adiponectin levels were measured by RIA. Anthropometric measurements were taken and a 75 g oral glucose tolerance test performed. Fasting insulin and lipid profile were measured and insulin resistance was determined using the homeostasis model assessment insulin resistance index (HOMA-R) and the quantitative insulin sensitivity check index. RESULTS: Plasma adiponectin levels were negatively correlated with central obesity indices such as waist circumference (r=-0.27, P<0.001) and waist-to-hip ratio (WHR) (r=-0.32, P<0.001), and with insulin resistance indices such as fasting insulin (r=-0.17, P=0.004) and HOMA-R (r=-0.13, P=0.035). Plasma ghrelin levels were negatively correlated with WHR (r=-0.12, P=0.03), but plasma adiponectin and ghrelin levels were not correlated (r=0.03, P=0.66). Multiple regression analysis showed that adiponectin was associated with WHR, fasting insulin and fasting glucose levels. When ghrelin was used as a dependent variable, only WHR remained in the final fitted model. CONCLUSION: Fasting plasma adiponectin and ghrelin levels were found to be associated with central obesity or insulin resistance. However, plasma adiponectin and ghrelin concentrations were not associated with each other in elderly Korean women.


2015 ◽  
Vol 19 (3) ◽  
pp. 486-493 ◽  
Author(s):  
Raquel Burrows ◽  
Paulina Correa-Burrows ◽  
Marcela Reyes ◽  
Estela Blanco ◽  
Cecilia Albala ◽  
...  

AbstractObjectiveTo analyse the prevalence of cardiovascular risk factors in healthy adolescents of low to middle socio-economic status and to study the influence of anthropometric, biological and lifestyle factors on the risk of metabolic syndrome (MetS).DesignCross-sectional study. BMI, waist circumference, blood pressure, fat and lean mass (by dual-energy X-ray absorptiometry), TAG, HDL-cholesterol, glucose, insulin, homeostatic model assessment–insulin resistance index (HOMA-IR), food intake and physical activity were measured. Cardiovascular risk factors were defined using the International Diabetes Federation criteria and insulin resistance using HOMA-IR ≥2·6. Bivariate and multivariate regressions examined the associations between MetS and anthropometric, biological and lifestyle factors.SettingObservational cohort study including Chilean adolescents, who were part of a follow-up study beginning in infancy.SubjectsAdolescents aged 16–17 years (n 667).ResultsIn the sample, 16·2 % had obesity and 9·5 % had MetS. Low HDL-cholesterol (69·9 %), abdominal obesity (33·3 %) and fasting hyperglycaemia (8·7 %) were the most prevalent cardiovascular risk factors. In males, obesity (OR=3·7; 95 % CI 1·2, 10·8), insulin resistance (OR=3·0; 95 % CI 1·1, 8·2), physical inactivity (OR=2·9; 95 % CI 1·1, 7·7) and sarcopenia (OR=21·2; 95 % CI 4·2, 107·5) significantly increased the risk of MetS. In females, insulin resistance (OR=4·9; 95 % CI 1·9, 12·6) and sarcopenia (OR=3·6; 95 % CI 1·1, 11·9) were significantly associated with MetS.ConclusionsHigh prevalences of obesity, abdominal obesity, dyslipidaemia, fasting hyperglycaemia and MetS were found in healthy adolescents. In both sexes, sarcopenia and insulin resistance were important risk factors of MetS. Promotion of active lifestyles at the school level and regulation of the sale of energy-dense foods are needed.


Circulation ◽  
2016 ◽  
Vol 133 (suppl_1) ◽  
Author(s):  
Ala’a Alkerwi ◽  
Nicolas Sauvageot ◽  
Georgina E. Crichton ◽  
Merrill F. Elias ◽  
Saverio Stranges ◽  
...  

Introduction: Research into the health effects of cocoa has received much attention over the past few years. Several systematic reviews and meta-analyses of existing studies have generally agreed on a potentially beneficial association between chocolate consumption and risk for cardiometabolic disorders. However, evidence regarding a potential role of chocolate consumption in insulin resistance and hepatic biomarkers, from human epidemiological studies, is lacking. Hypothesis: We assessed the hypothesis that daily chocolate consumption would be inversely associated with insulin resistance and hepatic biomarkers in appraently healthy adults. Methods: A random sample of 1153 individuals, aged 18-69 years, was recruited between 2007 and 2009 to participate in the Observation of Cardiovascular Risk Factors (ORISCAV-LUX) study. Chocolate consumption in g/day was obtained from a semi-quantitative food-frequency questionnaire. Blood glucose and insulin were used for the homeostasis model assessment of insulin resistance (HOMA-IR). Hepatic biomarkers, namely serum γ-glutamyl-transpeptidase (γ-GT), serum Aspartate Transaminase (AST) and serum Alanine Transaminase (ALT) in mg/l were assessed using standard laboratory assays. Results: Chocolate consumers (81.8 %) were more likely to be younger, physically active, affluent people with higher education levels and have fewer chronic comorbidities. After exclusion of subjects taking antidiabetic medications, higher chocolate consumption was associated with lower HOMA-IR (β= -0.16, P=0.004), serum insulin levels (β= -0.16, P=0.003), and liver enzymes, including γGT (β= -0.12, P=0.009) and ALT (β= -0.09, P=0.004) after adjustment for age, sex, education, lifestyle (smoking status and physical activity) and dietary confounding factors, including daily energy intake, consumption of fruit and vegetables, alcohol, as well as polyphenol-rich coffee, and tea. Conclusion: This is the first population-based study reporting an independent inverse relationship between daily chocolate consumption and levels of insulin, HOMA-IR and liver enzymes in adults.. Small dietary changes with respect to chocolate consumption may improve liver enzymes and protect against insulin resistance, a well-established risk factor for cardiometabolic disorders.


Author(s):  
Habib Yarizadeh ◽  
Alireza Bahiraee ◽  
Sara Asadi ◽  
Niloofar Sadat Maddahi ◽  
Leila Setayesh ◽  
...  

Abstract. Objective: The genetic variants near the melanocortin-4 receptor gene (MC4R), a key protein regulating energy balance and adiposity, have been related to obesity and cardiovascular risk factors. However, qualitative and quantitative aspects of diet may modulate the association of this polymorphism with obesity and cardiovascular diseases (CVDs). The aim of this study was to evaluate interactions among MC4R rs17782313, the Dietary Approaches to Stop Hypertension (DASH) diet and risk factors for CVDs. Method: This cross-sectional study was conducted on 266 Iranian women categorized by body mass index (BMI) range of 25–40 kg/m2 as overweight or obese. CVD risk factors included waist circumference (WC), lipid profile, blood pressure, insulin circulation and fasting blood sugar (FBS). Insulin and FBS were used to calculate homeostatic model assessment insulin resistance (HOMA-IR) Body composition was assessed by a multi-frequency bioelectrical impedance analyzer, InBody 770 scanner. Results: The findings of this study show that high adherence to the DASH diet in the CC groups were associated with decreased SBP and DBP compared to the TT group. In addition, a significant difference between women with high adherence to the DASH diet compared to low adherence was observed for body weight (p < 0.001), fat free mass (FFM) (p = 0.01) and BMI (p = 0.02). Women with the CC genotype had higher insulin (mg/dl) (mean and SD, for TT: 14.6 ± 4.6, TC: 17.3 ± 9.2, CC: 15.3 ± 4.8, p = 0.04) and HOMA-IR (mean for and SD, TT: 3.1 ± 1.07, TC: 3.9 ± 2.4, CC: 3.2 ± 1.1, p = 0.01) than TT group. Inclusion of potential confounding variables (age, physical activity, BMI and daily caloric intake) did not attenuate the difference. Conclusion: Among overweight/obese Iranian women with the CC genotype, incorporating the DASH diet may serve as a dietary prescription to decrease CVD risk. A dietary intervention trial is warranted.


Author(s):  
Güzin Özden ◽  
Ayşe Esin Kibar Gül ◽  
Eda Mengen ◽  
Ahmet Ucaktürk ◽  
Hazım Alper Gürsu ◽  
...  

Abstract Objectives The objective of this study is to investigate the cardiovascular risk factors associated with metabolic syndrome (MetS), which is increasingly becoming prevalent in childhood obesity. Methods A total of 113 patients, 76 of whom were between the ages of 10 and 17 (mean age: 14.5 ± 1.8 years) and diagnosed with obesity (30 non-MetS and 46 MetS using IDF) and 37 of whom constituted the control group, participated in the study. Echocardiographic examination and atherogenicity parameters (Atherogenic index of plasma [AIP: logTG/HDL], total cholesterol/HDL, and TG/HDL ratio and non-HDL) were evaluated. Results The most common component accompanying obese MetS was found to be hypertension and low HDL. While obesity duration, body mass index (BMI), blood pressure, fasting insulin, insulin resistance, atherogenicity parameters were determined to be significantly higher in the obese-MetS group. Echocardiography showed that while the thickness, volume, and diameter of LV end-diastolic wall, left ventricular mass (LVM), LVM index (LVMI g/m2) and relative wall thickness (RWT) were significantly high in the MetS group, however, mitral E/A ratio was significantly lower (p<0.05). Change in LV geometry consistent with concentric remodeling (increased RWT, normal LVMI) was visible in obese groups. LVM were positively significantly related to BMI, waist circumference, insulin resistance, blood pressure, LDL level, and negative to mitral E/A ratio. In the obese-MetS group, LVMI was positively correlated to office systolic BP, left atrium end-diastolic volume/index. Conclusions LVMI and atherogenicity parameters that were found to be significantly higher in obese MetS exhibit increased cardiovascular risk in childhood.


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