Food group interactions with genetic poplymorphisms of CCND2, ZNT8 and MC4R in relation to risk of metabolic syndrome and its components

Background: There are contradictions in the role of genetic variations and food group intake on metabolic syndrome (MetS). This study was aimed at examining the interaction between food groups and CCND2 rs11063069, ZNT8 rs13266634 and MC4R rs12970134 polymorphisms, regarding MetS and its components. Methods: In this matched nested case-control study (2006-2014), the data of 1634 (817 pairs) case and controls were selected among participants of the Tehran Lipid and Glucose Study (TLGS). The cases and controls were matched by age, sex and number of follow-up years. Dietary intakes were assessed using a valid and reliable food frequency questionnaire. Polymorphisms were genotyped. Results: A significant interaction was observed between rs12970134 and green vegetable, read meat, and soft drink, in relation to the risk of low high density lipoprotein cholesterol (HDL-C), high triglyceride (TG) and high fasting blood glucose (FBG), respectively (P<0.05). The consumption of vegetables altered the effect of rs11063069 on MetS. Among G allele carriers, being in the highest quartiles of vegetables intake had a decrease risk of MetS, compared to those in the lowest quartile (P=0.007), but this trend was not observed in AA genotype carrier. There was also a significant interaction between rs13266634 and salty snack and fish intakes, in relation to the risk of abdominal obesity (P<0.05). Increasing salty meals by CT+TT genotypes carriers increased the odds ratio of abdominal obesity, while in the CC genotype, this increase was not observed. A significant interaction was also observed between rs11063069 with other vegetables, red-yellow vegetable and fruit intake respectively, regarding the risk of high FBG, low HDL-C and high blood pressure (P<0.05). Conclusion: The present study demonstrates the interaction between food groups and MC4R, ZNT8 and CCND2 polymorphisms. To reduce the risk of MetS, high risk allele carriers of rs12970134 must avoid meat consumption, while in high risk allele carriers of rs11063069 and rs13266634, vegetables and fish should be consumed

Dietary approach to stop hypertension and healthy eating index 2015, modify the association between FTO polymorphisms and obesity phenotypes

Abstract This study aimed to investigate the interaction of the healthy eating index (HEI) and the dietary approach to stop hypertension (DASH) diet scores with FTO polymorphisms in relation to change in obesity traits. A total of 4480 subjects aged ≥ 18 years were selected from participants of the Tehran lipid and glucose study and followed-up 3 years. Selected polymorphisms (rs1421085, rs1121980, rs8050136) were genotyped and genetic risk score (GRS) was computed. HEI and DASH scores were computed based on dietary data. Changes in body mass index (BMI), waist circumference (WC), waist to hip ratio (WHR) and visceral adiposity index (VAI) were measured. Higher adherence to both DASH and HEI scores were increased with higher ages. Individuals with high GRS had a lower change in BMI when they had higher adherence to HEI, compared to subjects with lower HEI score (P trend = 0.01). Change in WC in participants in the fourth quartile of HEI score in minor allele carriers of FTO variants was lower compared to the first quartile; conversely, higher adherence to the DASH score by this genotypic group was related to increase in WC. No significant interaction was seen between FTO polymorphisms and both diet scores regarding changes in any of obesity traits. In conclusion, in individuals with high GRS higher adherence to HEI score was associated with lower change in BMI and WC, while higher adherence to DASH diet was associated with higher change in WC, compared to individuals with lower adherence to both scores

The association between dietary acrylamide intake and the risk of type 2 diabetes incidence in the Tehran lipid and glucose study

Abstract This study aimed at investigating the association of acrylamide consumption with the incidence of type 2 diabetes (T2D) in adults. The 6022 subjects of the Tehran lipid and glucose study participants were selected. The acrylamide content of food items were summed and computed cumulatively across follow up surveys. Multivariable Cox proportional hazard regression analyses were performed to estimate the hazards ratio (HR) and 95% confidence interval (CI) of incident T2D. This study was done on men and women, respectively aged 41.5 ± 14.1 and 39.2 ± 13.0 years. The mean ± SD of dietary acrylamide intake was 57.0 ± 46.8 µg/day. Acrylamide intake was not associated with the incidence of T2D after adjusting for confounding variables. In women, a higher acrylamide intake was positively associated with T2D [HR (CI) for Q4: 1.13 (1.01–1.27), P trend: 0.03] after adjusting for confounding factors. Our results demonstrated that dietary intake of acrylamide was associated with an increased risk of T2D in women

Diet quality and anthropometric indices of patients undergone bariatric surgery: the prospective Tehran obesity treatment study

Abstract Background Patients undergone bariatric surgery (BS) has long-term risks including decrease in diet quality, nutritional deficiencies and weight regain. This study focus on assessing dietary quality and food group components in patients one year after BS, the relationship between dietary quality score and anthropometric indices, and also evaluating the trend of body mass index (BMI) of these patients three years after BS. Methods A total of 160 obese patients (BMI ≥ 35 kg/m2) were undergone sleeve gastrectomy (SG) (n = 108) or gastric bypass (GB) (n = 52), participated in this study. They were assessed for dietary intakes using three 24-hour dietary recalls one year after surgery. Dietary quality was assessed using food pyramid for post BS patients and healthy eating index (HEI). Anthropometric measurements were taken pre-surgery and 1, 2 and 3 years after operation. Results The mean age of patients was 39.9 ± 11 years (79% female). The mean ± SD percentage of excess weight loss was 76.6 ± 21.0 one year after surgery. Intake patterns are generally (up to 60%) not consistent with the food pyramid. The mean total HEI score was 64 ± 12 out of 100. More than %60 of participants is exceeding the recommendations for saturated fat and sodium. The HEI score did not show significant relationship with anthropometric indices. The mean of BMI in SG group increased over three years of follow up, while in GB group, there were no significant differences in BMI during three years of follow up. Conclusions These findings showed that patients had not healthy pattern intake one year after BS. Diet quality did not show significant relationship with anthropometric indices. The trend of BMI three years after surgery was different based on surgery types