Insulin resistance causes obesity and metabolic proteins in numerous animal models of obesity (caused by diet or genetic modification), it is worth noting that excess calories turned entirely to synthesize fat and did not seem to cause an increase in tissue protein synthesis rate (47). Interestingly, hyperinsulinaemia developed with obesity plays an important role in the expansion of fat tissue, but whether it also plays a role in the lower protein depo- sition of rodents lack of leptin or the leptin receptor (48.49) is not clear. Recent studies in a mouse model of diet uong- induced obesity (50) also showed that changes in protein mass can happen, but it depends on the animal species are in the stage of dynamic development subsidiary solely obesity ment or static stage of obesity. More specifically, it was found that while weight gain, muscle mass is increased with fat mass and is associated with an increased rate of muscle protein synthesis (50). However, chronic obesity When installed, ie the period of weight stable, the volume decreased in association with the rate of protein synthesis. Therefore, as the beginning of uong- diet caused obesity in this mouse model seems to be an anabolic interval for skeletal muscle, possibly because of increased weight bearing and more exposed to mechanical load gas that can have a physical effect of training together with the changes in anabolic hormone production. However, as obesity continues to grow, the chronic exposure to exog- enous and endogenous lipid overload, may be due to the saturation point of the capacity of adipose tissue, seems to be harmful to the metabolism muscle mass and muscle (50). these observations thus highlighting the importance of characterizing the changes occurring in skeletal muscle protein metabolism in both dynamic and static phases of obesity.
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