A free-choice high-fat high-sugar diet induces glucose intolerance and insulin unresponsiveness to a glucose load not explained by obesity.
Summary of "A free-choice high-fat high-sugar diet induces glucose intolerance and insulin unresponsiveness to a glucose load not explained by obesity."
Objectives:In diet-induced obesity, it is not clear whether impaired glucose metabolism is caused directly by the diet, or indirectly via obesity. This study examined the effects of different free-choice, high-caloric, obesity-inducing diets on glucose metabolism. In these free-choice diets, saturated fat and/or a 30% sugar solution are provided in an addition to normal chow pellets.Method:In the first experiment, male rats received a free-choice high-fat high-sugar (HFHS), free-choice high-fat (HF) or a chow diet. In a second experiment, male rats received a free-choice high-sugar (HS) diet or chow diet. For both experiments, after weeks 1 and 4, an intravenous glucose tolerance test was performed.Results:Both the HFHS and HF diets resulted in obesity with comparable plasma concentrations of free fatty acids. Interestingly, the HF diet did not affect glucose metabolism, whereas the HFHS diet resulted in hyperglycemia, hyperinsulinemia and in glucose intolerance because of a diminished insulin response. Moreover, adiposity in rats on the HF diet correlated positively with the insulin response to the glucose load, whereas adiposity in rats on the HFHS diet showed a negative correlation. In addition, total caloric intake did not explain differences in glucose tolerance. To test whether sugar itself was crucial, we next performed a similar experiment in rats on the HS diet. Rats consumed three times as much sugar when compared with rats on the HFHS diet, which resulted in obesity with basal hyperinsulinemia. Glucose tolerance, however, was not affected.Conclusion:Together, these results suggest that not only obesity or total caloric intake, but the diet content also is crucial for the glucose intolerance that we observed in rats on the HFHS diet.International Journal of Obesity advance online publication, 17 August 2010; doi:10.1038/ijo.2010.164.
 Department of Neuroscience and Pharmacology, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands  Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterd
This article was published in the following journal.
Name: International journal of obesity (2005)
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20714332
- DOI: http://dx.doi.org/10.1038/ijo.2010.164
Juvenile chinook salmon of three strains responded to inclusion of 28.7% of gelatinized starch in the diet with different degrees of reduction in growth rate and feed efficiency relative to control fi...
Consumption of a high energy diet, containing high amounts of saturated fat and refined sugar has been associated with impairment of cognitive function in rodents and humans. We sought to contrast the...
Streptanthus tortuosus Kell. suspension cells will grow in a medium with sucrose as carbohydrate source. It was investigated whether the cells are able to take up sucrose or whether sucrose has to be...
Adverse early nutrition leads to metabolic aberrations in adulthood. Molecular and cellular mechanisms responsible are emerging; specific nutritional causes remain unclarified. We investigated gestati...
A photomixotrophic tissue culture system for Nicotiana plumbaginifolia and N. tabacum has been developed in which a primary symptom (bleching) of the inhibition of photosynthetic electron transport by...
Dietary consumption of fructose has increased by nearly 50% since 1960. A high fructose diet (HFrD) results in greater visceral adiposity and systemic insulin resistance than a high gluco...
Gestational diabetes mellitus (GDM) is a condition in which high blood sugar levels occur during pregnancy. GDM increases the risk of medical complications during pregnancy which may harm...
The purpose of this proposed randomized, controlled trial is to compare the effects of high monounsaturated fat diets and high carbohydrate diets on body weight, body composition, glycemic...
Gestational diabetes (GDM) is a condition that manifests as high blood sugar levels (hyperglycemia) during pregnancy in previously healthy women. It develops as a result of increased mater...
The purpose of the study is to see if a low glycemic index diet will reduce blood sugar levels in pregnant women with high blood sugar levels.
Medical and Biotech [MESH] Definitions
A glycosidase that hydrolyzes a glucosylceramide to yield free ceramide plus glucose. Deficiency of this enzyme leads to abnormally high concentrations of glucosylceramide in the brain in GAUCHER DISEASE. EC 220.127.116.11.
A course of food intake that is high in FATS and low in CARBOHYDRATES. This diet provides sufficient PROTEINS for growth but insufficient amount of carbohydrates for the energy needs of the body. A ketogenic diet generates 80-90% of caloric requirements from fats and the remainder from proteins.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
A non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases IMMUNITY, and provides energy for muscle tissue, BRAIN, and the CENTRAL NERVOUS SYSTEM.
A diet typical of the Mediterranean region characterized by a pattern high in fruits and vegetables, cereals and bread, potatoes, poultry, beans, nuts, olive oil and fish while low in red meat and dairy and moderate in alcohol consumption.