Acute and short-term insulin-induced molecular adaptations of GLUT2 gene expression in the renal cortex of diabetic rats

Increased GLUT2 gene expression in the renal proximal tubule of diabetic rats is an adaptive condition, which may be important in the diabetic nephropathy development. We investigated the effects of insulin treatment upon the renal GLUT2 overexpression of diabetic rats. Acute treatment, surprisingly, induced a rapid further increase in GLUT2 mRNA content. Twelve hours after insulin injection, GLUT2 mRNA was twice the value of saline-injected rats (P < 0.001), when GLUT2 protein remained unchanged. In response to short-term treatment, both GLUT2 mRNA and protein were increased in 1-day treated rats (P < 0.05 versus saline-injected), decreasing after that, and reaching, within 6 days, values close to those of non-diabetic rats. Concluding, insulin treatment induced: initially, an additional upregulation of GLUT2 gene expression, involving posttranscriptional modulation; thereafter, downregulation of GLUT2 expression, which returns to non-diabetic levels. The former may be related to increased insulin concentration, the latter may be due to glycemic control. © 2005 Elsevier B.V. All rights reserved.

Effects of physical exercise and cinnamon extract on blood chemistry of type 1 diabetic rats

The present study was designed to analyze the effects of the association between cinnamon extract and aerobic exercise on the glycemic control and serum lipid profile of diabetic rats. Fifty Wistar male rats divided into five groups: control (C), sedentary nondiabetic rats; diabetic (D), sedentary diabetic rats; diabetic cinnamon (DC), sedentary diabetic rats that received cinnamon extract; diabetic exercise (DE), sedentary diabetic rats subjected to physical training; and diabetic cinnamon exercise (DCE), diabetic rats that received cinnamon extract and were subjected to physical training. For the induction of diabetes, the rats received alloxan. The cinnamon was administered to once a day for four weeks. The groups performed swimming exercises for one hour each day with lead overloads (3% - 5% of b.w) for five days a week for four weeks. Body weight loss was lower in the DE group compared to the other diabetic groups. The basal serum glucose of all the diabetic groups was higher compared to the control group. Group D had higher serum cholesterol concentrations compared to the DE and DCE groups. The resting blood lactate in group D was higher than the resting blood lactate in the DC and DE groups. Aerobic exercise partially counteracted the diabetic effects on body weight, serum cholesterol and blood lactate concentrations. No additional beneficial effects of cinnamon extract and aerobic exercise were observed on the parameters studied.

Effects of 12-week overground walking training at ventilatory threshold velocity in type 2 diabetic women

This study analyzed the effects of overground walking training at ventilatory threshold (VT) velocity on glycaemic control, body composition, physical fitness and lipid profile in DM2 women. Nineteen sedentary patients were randomly assigned to a control group (CG; n=10, 55.9±2.2 years) or a trained group (TG; n=9, 53.4±2.3 years). Both groups were subjected to anthropometric measures, a 12-h fasting blood sampling and a graded treadmill exercise test at baseline and after a 12-week period, during which TG followed a training program involving overground walking at VT velocity for 20-60min/session three times/week. Significant group×time interactions (P<0.05) in glycated hemoglobin (HbA1c), body mass, body mass index (BMI), peak oxygen uptake (VO 2peak) and exercise duration were observed as effects of training exercise, whereas intervention did not induced significant changes (P>0.05) in fasting blood glucose, submaximal fitness parameters and lipid profile. Our results suggest that overground walking training at VT velocity improves long term glycaemic control, body composition and exercise capacity, attesting for the relevance of this parameter as an effective strategy for the exercise intensity prescription in DM2 population. © 2011 Elsevier B.V.

Avaliação do sinal insulínico em ratos adultos com doença periodontal

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Yacon (Smallanthus sonchifolius): compostos fenólicos totais e efeitos sobre a glicemia e estresse oxidativo em ratos diabéticos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Processo de reparo ósseo de cavidades cirúrgicas preenchidas ou não com osso autógeno e recobertas por membrana de matriz óssea homógena em diabéticos: análise histomorfométrica em tíbia de ratos

Pós-graduação em Odontologia - FOA

Fatores de risco para macrossomia fetal em gestações complicadas por diabete ou hiperglicemia diária

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação imuno-histoquímica da remodelação óssea alveolar em ratos diabéticos durante a movimentação ortodôntica associada à laserterapia

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do programa de dispensação de glicosímetros e insumos para automonitoração da glicemia capilar no município de Botucatu-SP

Pós-graduação em Enfermagem (mestrado profissional) - FMB

Desenvolvimento e avaliação de um protocolo de atenção farmacêutica intensiva com metodologia educacional de empoderamento para adultos com Diabetes mellitus tipo 2 - estudo translacional fase 1

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito da fonte de amido e do manejo alimentar no controle da glicemia em cães com diabete mellitus naturalmente adquirida

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Respostas endócrinas, metabólicas, cardíacas e hematológicas de eqüinos submetidos ao exercício intenso e à administração de cafeína, aminofilina e clembuterol

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito do Diabetes mellitus e da insulinoterapia na osseointegração estabelecida ao redor de implantes instalados em tíbia de ratos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do efeito do tratamento periodontal não-cirúrgico sobre parâmetros clínicos e imunológicos em pacientes portadores de Diabetes mellitus Tipo 2: estudo clínico e imunológico

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dopplervelocimetria da artéria umbilical e controle glicêmico materno como marcadores de alterações vasculares e apoptóticas placentárias

Pós-graduação em Ginecologia, Obstetrícia e Mastologia - FMB