phosphofructokinase/obesitas

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Mononuclear leukocytes from obese patients with type II diabetes have reduced activity of hexokinase, 6-phosphofructokinase and glucose-6-phosphate dehydrogenase.

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In the present study we measured the activity of some cytosolic enzymes involved in intracellular glucose metabolism in mononuclear leukocytes from 77 obese subjects of which 39 were nondiabetic and 38 had newly-diagnosed untreated type II diabetes mellitus. 28 subjects (19 nondiabetic and 18

Obesity and the regulation of phosphofructokinase in heart: an apparent insensitivity to adrenergic activation in mature-age genetically obese rats.

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The activity ratio of phosphofructokinase in perfused rat heart and its activation by epinephrine was examined in non-obese, fat-fed obese, and genetically obese rats. For non-obese colony rats there was an age-dependent increase in the activity ratio of phosphofructokinase from 0.2 at 40 days to

Regulation of pathways of glucose metabolism in the kidney. The activity of the pentose phosphate pathway, glycolytic route and the regulation of phosphofructokinase in the kidney of lean and genetically obese (ob/ob) mice; comparison with effects of diabetes.

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The activities of enzymes of the glycolytic route, the pentose phosphate pathway and NADPH-linked enzymes have been measured in the kidneys of genetically obese (ob/ob) mice and their lean litter mates. The renal content of glucose 6-phosphate (G6P), fructose 6-phosphate (F6P), fructose

Metabolic flux through phosphofructokinase and fructose 1,6-diphosphatase and its relation to lipogenesis in genetically obese rats.

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Defective allosteric regulation of phosphofructokinase in genetically-obese mice.

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Purification and properties of liver phosphofructokinase from normal and obese mice.

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Insensitivity of cardiac phosphofructokinase to adrenergic activation in Zucker rats. A post-receptor defect.

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The apparent insensitivity of phosphofructokinase to activation by adrenaline in hearts from genetically obese Zucker (fa/fa) rats [Patten, Filsell & Clark (1982) Metab. Clin. Exp. 31, 1137-1141] was examined in detail. Perfusion of hearts from obese (fa/fa) animals with medium containing 1nM-100

Different types of postinsulin receptor defects contribute to insulin resistance in hearts of obese Zucker rats.

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The influence of obesity on myocardial function and metabolism was studied in obese (fa/fa) and thin (Fa/Fa) Zucker rats using the isolated perfused heart as model. Cardiac performance of obese Zucker rats was not impaired. Instead, left ventricular pressure and contractility were increased as

Neuroglial metabolic compartmentation underlying leptin deficiency in the obese ob/ob mice as detected by magnetic resonance imaging and spectroscopy methods.

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Manganese-Enhanced Magnetic Resonance Imaging (MEMRI), (1)H and (13)C High-Resolution-Magic Angle Spinning (HR-MAS) Spectroscopy, and genomic approaches were used to compare cerebral activation and neuronal and glial oxidative metabolism in ad libitum fed C57BL6/J leptin-deficient, genetically obese

Impaired 6-phosphofructokinase activity in mononuclear leukocytes from patients with type II diabetes mellitus.

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Seven cytoplasmic enzyme activities were measured in extracts of mononuclear leukocytes (lymphocytes plus monocytes) obtained from 19 type II diabetic humans and 10 healthy control subjects. 6-Phosphofructokinase activity was significantly decreased in cell extracts from diabetics, while other

Isozyme analysis of human polymorphonuclear leukocyte phosphofructokinase from insulin resistant individuals.

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Phosphofructokinase (PFK) from human polymorphonuclear leukocytes (PMN) was characterized by immunological titration with subunit specific antibodies and column chromatography on QAE-Sephadex in three different groups: control, type II diabetic, and obese individuals. It was found that PMN

Comparison of risk factors for obesity in young, nonobese African-American and Caucasian women.

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OBJECTIVE To determine whether specific risk factors for obesity were more evident in young, normal-weight African-American (AA) compared to Caucasian-American (CA) women. METHODS Cross-sectional age-matched study. METHODS Young, nonobese, sedentary AA (n= 13, 22.5y of age, 23.6% body fat) and CA

Mouse (C57BL/KsJ) liver phosphofructokinase. Allosteric kinetics and age-related changes in the genetically diabetic state.

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The regulatory kinetic properties of phosphofructokinase partially purified from the livers of C57BL/KsJ mice were studied. The fructose 6-phosphate saturation curves were highly pH dependent. At a fixed MgATP concentration (1 mM), allosteric kinetics was observed in the range of pH studied (7.3 to

Enzymatic studies of liver cells obtained by fine needle biopsy from mice with the obese-hyperglycemic syndrome (genesymbol ob).

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In an enzymatic study of livers from obese hyperglycemic mice (obob) and their lean litter mates, microdissected freeze-dried fine needle biopsies were used. Carbohydrate, fatty acid and ketone body metabolism was examined through assays of phosphofructokinase (PFK), 3-hydroxyacyl-CoA dehydrogenase

Morphology and enzyme activities of the retinal capillaries in mice with the obese-hyperglycaemic syndrome (gene symbol ob).

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The retinal capillary bed from 67 obese-hyperglycaemic mice and 64 lean litter mates was isolated by trypsin digestion and investigated with respect to structure and enzyme activities. There was no significant difference in the ratio between numbers of endothelial and mural cells. The capillary

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