Polymorphisms in the stearoyl-CoA desaturase gene modify blood glucose response to dietary oils varying in monounsaturated fatty acid content in adults with obesity

ABSTRACT Diets varying in saturated (SFA) and monounsaturated fatty acid (MUFA) content can impact glycemic control; however, whether underlying differences in genetic make-up can influence blood glucose responses to these dietary fatty acids is unknown. We examined the impact of dietary oils varying in SFA/MUFA content on changes in blood glucose levels (primary outcome) and whether these changes were modified by variants in the stearoyl-CoA desaturase (SCD) gene (secondary outcome). Obese men and women participating in the randomized, crossover, isocaloric, controlled-feeding Canola Oil Multicenter Intervention Trial II consumed 3 dietary oils for 6 wk, with washout periods of ˜6 wk between each treatment. Diets studied included a high SFA/low MUFA Control oil (36.6% SFA/28.2% MUFA), a conventional canola oil (6.2% SFA/63.1% MUFA), and a high oleic acid canola oil (5.8% SFA/74.7% MUFA). No differences in fasting blood glucose were observed following the consumption of the dietary oils. However, when stratified by SCD genotypes, significant SNP-by-treatment interactions on blood glucose response were found with additive models for rs1502593 (p=0.01), rs3071 (p=0.02), and rs522951 (p=0.03). The interaction for rs3071 remained significant (p=0.005) when analyzed with a recessive model, where individuals carrying the CC genotype showed an increase (0.14±0.09 mmol/L) in blood glucose levels with the Control oil diet, but reductions in blood glucose with both MUFA oil diets. Individuals carrying the AA and AC genotypes experienced reductions in blood glucose in response to all 3 oils. These findings identify a potential new target for personalized nutrition approaches aimed at improving glycemic control.

Acacia Gum Is Well Tolerated While Increasing Satiety and Lowering Peak Blood Glucose Response in Healthy Human Subjects

Acacia gum (AG) is a non-viscous soluble fiber that is easily incorporated into beverages and foods. To determine its physiological effects in healthy human subjects, we fed 0, 20, and 40 g of acacia gum in orange juice along with a bagel and cream cheese after a 12 h fast and compared satiety, glycemic response, gastrointestinal tolerance, and food intake among treatments. Subjects (n = 48) reported less hunger and greater fullness at 15 min (p = 0.019 and 0.003, respectively) and 240 min (p = 0.036 and 0.05, respectively) after breakfast with the 40 g fiber treatment. They also reported being more satisfied at 15 min (p = 0.011) and less hungry with the 40 g fiber treatment at 30 min (p = 0.012). Subjects reported more bloating, flatulence, and GI rumbling on the 40 g fiber treatment compared to control, although values for GI tolerance were all low with AG treatment. No significant differences were found in area under the curve (AUC) or change from baseline for blood glucose response, although actual blood glucose with 20 g fiber at 30 min was significantly less than control. Individuals varied greatly in their postprandial glucose response to all treatments. AG improves satiety response and may lower peak glucose response at certain timepoints, and it is well tolerated in healthy human subjects. AG can be added to beverages and foods in doses that can help meet fiber recommendations.

RESPONS GLUKOSA DARAH BENIH IKAN JELAWAT (Leptobarbus hoeveni Blkr) DALAM MEDIA YANG DIBERI EKSTRAK DAUN UBI JALAR (Ipomoea batatas)

Use of sweet potato leaf extract to determine the blood glucose response of jelawat fish (L. hoeveni, Blkr) seeds maintained in the media.This study aims to determine the optimal concentration of sweet potato leaf extract to reduce the stress level of Jelawat fish (L. hoeveni, Blkr) seeds by measuring blood glucose. In this study, four treatments were used with three replications using a concentration of 2ml / L sweet potato leaf extract, 4ml / L extract concentration, 6ml / L extract concentration, and control. The results showed that the 2ml / L extract concentration was the best because it was proven that the fish blood glucose response at every 1st, 6th, 12th hour, 24th hour, 168th hour fish (L. hoeveni, Blkr) seed blood glucose levels nettle nearly close to normal blood glucose levels in fish.