HVN TATUA Metadata Record - Effects of a dairy protein (whey) hydrolysate on blood sugar, metabolic rate, gut and immune function after eating.
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Dairy components, especially whey protein, have been shown to help with glucose regulation after eating by enhancing insulin secretion, thereby preventing hyperglycaemia. Hydrolysing intact whey protein breaking down the intact protein into smaller peptide chains, some of which have bioactive effects, and have been hypothesised to further promote glucose regulation by lowering glucose excursion after a meal. Moreover, breaking down the intact protein can also make the whey protein more digestible and easily absorbed by the gut.However, the beneficial effect of hydrolysed whey protein on other aspects of postprandial metabolism has not been studied in detail. One novel component of this study is to assess the effect of hydrolysed whey protein on increasing energy expenditure after a meal, also referred to as diet-induced thermogenesis (DIT). Increasing protein intake has long been known to increase DIT. The higher DIT may potentially increase fat oxidation, therefore beneficial for the prevention of weight gain. We are interested to find out whether the more easily absorbed hydrolysed whey protein can further increase energy expenditure. Further, the widespread consumption of proinflammatory higher carbohydrate and higher fat food predisposes people to weight gain and poor metabolic health. Additionally, the 'leakiness' within the gut may cause gut-derived endotoxin, bacterial lipopolysaccharide (LPS) to diffuse into the systemic circulation, triggering an inflammatory response, which is also commonly seen in people with type-2 diabetes. Based on the current understanding from in vitro and in silico studies, whey protein and hydrolysed whey protein have potent antioxidant activity, which may potentially help with alleviating inflammation after eating. This study addresses these gaps and set out to test the efficacy of hydrolysed whey protein in helping to promote glucose regulation and increase energy expenditure, and to help maintain gut barrier function and lower inflammation after a meal.