File Name: fructose weight gain and the insulin resistance syndrome .zip
- Fructose, weight gain, and the insulin resistance syndrome.
- Oral Glucose Tolerance Test Uses, Procedure and Results
- Fructose, insulin resistance, and metabolic dyslipidemia
- Insulin resistance
Fructose, weight gain, and the insulin resistance syndrome.
Obesity and type 2 diabetes are occurring at epidemic rates in the United States and many parts of the world. The "obesity epidemic" appears to have emerged largely from changes in our diet and reduced physical activity. An important but not well-appreciated dietary change has been the substantial increase in the amount of dietary fructose consumption from high intake of sucrose and high fructose corn syrup, a common sweetener used in the food industry. A high flux of fructose to the liver, the main organ capable of metabolizing this simple carbohydrate, perturbs glucose metabolism and glucose uptake pathways, and leads to a significantly enhanced rate of de novo lipogenesis and triglyceride TG synthesis, driven by the high flux of glycerol and acyl portions of TG molecules from fructose catabolism. These metabolic disturbances appear to underlie the induction of insulin resistance commonly observed with high fructose feeding in both humans and animal models. Fructose-induced insulin resistant states are commonly characterized by a profound metabolic dyslipidemia, which appears to result from hepatic and intestinal overproduction of atherogenic lipoprotein particles. Thus, emerging evidence from recent epidemiological and biochemical studies clearly suggests that the high dietary intake of fructose has rapidly become an important causative factor in the development of the metabolic syndrome.
Clue is on a mission to help you understand your body, periods, ovulation, and so much more. Start tracking today. Under normal conditions, the hormone insulin rises briefly after eating. It stimulates the liver and muscles to take up sugar from the blood and convert it to energy. That then causes blood sugar to fall, and then insulin to fall. With normal insulin sensitivity, both sugar and insulin are normal on a fasting blood test. With insulin resistance, blood sugar may be normal, but insulin is high.
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Oral Glucose Tolerance Test Uses, Procedure and Results
Mandarino, Ralph A. We examined the effect of pioglitazone on abdominal fat distribution to elucidate the mechanisms via which pioglitazone improves insulin resistance in patients with type 2 diabetes mellitus. Abdominal fat distribution was evaluated using magnetic resonance imaging at L4—5. The total body glucose MCR during the first and second insulin clamp steps increased after pioglitazone treatment [first MCR, 3. These results demonstrate that a shift of fat distribution from visceral to sc adipose depots after pioglitazone treatment is associated with improvements in hepatic and peripheral tissue sensitivity to insulin. Early studies showed that troglitazone ameliorates insulin resistance and improves hyperglycemia, hyperinsulinemia, and dyslipidemia in type 2 diabetic patients 1 — 5. Although the precise mechanism of action of the thiazolidinediones remains to be determined, their glucose-lowering effect seems to depend on the presence of insulin 6.
Fructose, insulin resistance, and metabolic dyslipidemia
People with diabetes often hear that they should not eat sweet foods because these can cause spikes in blood sugar. Could honey be a healthful alternative to the sugar in sweets and snacks? The pancreas secretes insulin , a hormone, to keep blood sugar at safe levels. In a person with diabetes , the body either cannot use insulin correctly or it cannot produce enough.
The contribution of high fructose corn syrup HFCS to metabolic disorder and obesity, independent of high fat, energy-rich diets, is controversial. Impaired dopamine function is associated with obesity and high fat diet, but the effect of HFCS on the dopamine system has not been investigated. The objective of this study was to test the effect of HFCS on weight gain, glucose regulation, and evoked dopamine release using fast-scan cyclic voltammetry. HFCS consumption with chow diet did not induce weight gain compared to water, chow-only controls but did induce glucose dysregulation and reduced evoked dopamine release in the dorsolateral striatum. These data show that HFCS can contribute to metabolic disorder and altered dopamine function independent of weight gain and high-fat diets.
Insulin resistance IR is a pathological condition in which cells fail to respond normally to the hormone insulin. Insulin is a hormone that allows glucose to enter cells which also reduces blood glucose blood sugar. Insulin is released by the pancreas in response to carbohydrates consumed in the diet. In states of insulin resistance, the same amount of insulin does not have the same effect on glucose transport and blood sugar levels. There are many causes of insulin resistance and the underlying process is still not completely understood. Risk factors for insulin resistance include obesity , sedentary lifestyle , family history of diabetes, various health conditions, and certain medications. Insulin resistance is considered a component of the metabolic syndrome.
Когда он наконец заговорил, голос его звучал подчеркнуто ровно, хотя было очевидно, что это давалось ему нелегко. - Увы, - тихо сказал Стратмор, - оказалось, что директор в Южной Америке на встрече с президентом Колумбии. Поскольку, находясь там, он ничего не смог бы предпринять, у меня оставалось два варианта: попросить его прервать визит и вернуться в Вашингтон или попытаться разрешить эту ситуацию самому. Воцарилась тишина. Наконец Стратмор поднял усталые глаза на Сьюзан. Выражение его лица тут же смягчилось.
The insulin resistance syndrome is a cluster of related variables that appears to be of major importance in the pathogenesis of coronary artery disease. The.