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Effects of glucose loads of 50 and 100g on carbohydrate and lipid oxidation in normal human subjects
Braz. j. med. biol. res ; 21(4): 773-9, 1988. ilus
Artigo em Inglês | LILACS | ID: lil-60783
ABSTRACT
The effects of 50 - and 100-g glucose loads on carbohydrate and lipid oxidation and substrate metabolism of seven normal subjects were studied in the postabsorptive state and for 3 h following glucose ingestion. 2. The increases in the non-protein respiratory quotient (npRQ) and carbohydrate oxidation rate were larger after the ingestion of 100 g glucose than after the 50-g glucose load. The total amount of glucose oxidized during the test with 100 g of glucose ingested orally (100-g OGT) (13.4 ñ 0.8 g/m2) was significantly greater than oxidized during the 50-g OGT (9.5 ñ 0.6 g/m2), whereas lipid oxidation predominated in the tests with the smaller dose of glucose. The difference between the amounts of glucose oxidized during the two tests was greater when the increments above the basal values of glucose oxidation were compared (100-g OGT = 8.0 ñ 0.5 g/m2 vs 50-g OGT = 3.8 ñ 0.5 g/m2; P < 0.001). 3. The glucose disposal data revealed that the subjects not only oxidized more of the hexose after the ingestion of 100 g of glucose but they also stored more after the 50-g glucose meal. 4. The changes in the concentrations of glucose, lactate, pyruvate, alanine and insulin in the blood were also related to the amount of the glucose load. 5. It is suggested that the modulation of this oxidative response to glucose ingestion occurs in the insulin-dependent tissues
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Índice: LILACS (Américas) Assunto principal: Carboidratos / Glucose / Lipídeos Limite: Adulto / Feminino / Humanos / Masculino Idioma: Inglês Revista: Braz. j. med. biol. res Assunto da revista: Biologia / Medicina Ano de publicação: 1988 Tipo de documento: Artigo / Documento de projeto

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Índice: LILACS (Américas) Assunto principal: Carboidratos / Glucose / Lipídeos Limite: Adulto / Feminino / Humanos / Masculino Idioma: Inglês Revista: Braz. j. med. biol. res Assunto da revista: Biologia / Medicina Ano de publicação: 1988 Tipo de documento: Artigo / Documento de projeto