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- 저자 : Roberto Barbosa Bazotte (검색결과 4 건)
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Mauricio Fumio Sybuia,Ma´rcio Guilhermetti,Camila Sampaio Mangolim,Roberto Barbosa Bazotte,Graciette Matioli 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.6
The impact of cyclodextrins (CDs) on postprandial glycemic response employing the real-time continuous glucose monitoring system (RT-CGMS) was investigated. For this purpose, α-CD, β-CD, γ-CD, HP-β-CD, curdlan, and dextrin at doses of 10 and 100 mg/kg were orally administered in rats. The RT-CGMS was efficient to evaluate the impact of CDs on postprandial glycemia. The results showed that α-CD, β-CD, dextrin, and curdlan did not reduce the glycemic response after the administration of starch. In contrast, the HP-β-CD (100 mg/kg) attenuated the rise in glycemia. Moreover, the γ-CD blunts the postprandial glycemic excursion at doses of 10 and 100 mg/kg. Therefore, γ-CD could attenuate the rise in glycemia promoted by oral administration of starch. Considering that the treatment of postprandial hyperglycemia is necessary to prevent type 2 diabetes, this study opens the perspective of better control of postprandial glycemia by the addition of γ-CD in food.
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Prefrontal Cortex and Hippocampus Inflammation in Mice Fed High-Carbohydrate or High-Fat Diets
Marina Masetto Antunes,Guilherme Godoy,Laureane Nunes Masi,Rui Curi,Roberto Barbosa Bazotte 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.1
We previously reported that a high-carbohydrate diet (HCD) induced systemic inflammation and higher gene expression of proinflammatory mediators in the liver, skeletal muscle, and brain than a high-fat diet (HFD). However, the differences between the groups were less pronounced in the brain. In this study, we extended the evaluation of inflammation to specific areas of the brain. In this study, we evaluated the gene expression of caspase 2, caspase 3, caspase 9, cyclooxygenase-2 (Cox 2), inducible nitric oxide synthase (iNOS), interleukin (IL), IL-6, IL-1β, IL-10, IL-4, tumor necrosis factor-alpha (TNF-α), integrin subunit alpha m (Itgam), S100 protein (S100), allograft inflammatory factor 1 (Aif1), and glial fibrillary acidic protein (Gfap) in the prefrontal cortex and hippocampus of male Swiss mice that were fed with HCD or HFD for 8 weeks. The HCD group exhibited higher IL-1β expression, whereas the HFD group showed higher TNF-α expression in the prefrontal cortex. In the hippocampus, TNF-α expression was higher in the HFD group. IL-1β and TNF-α are proinflammatory cytokines that have been associated with impaired brain function and numerous brain disorders. Our results indicate that both HCD and HFD promote prefrontal cortex inflammation; however, the hippocampus seems more sensitive to a HFD than HCD.
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Biological Effects of Hydrolyzed Quinoa Extract from Seeds of Chenopodium quinoa Willd.
Quele Adriana Meneguetti,Mislaine Adriana Brenzan,Marcia Regina Batista,Roberto Barbosa Bazotte,Daniel Rodrigues Silva,Diógenes Aparício Garcia Cortez 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.6
An extract from seeds of Chenopodium quinoa Willd. (quinoa), termed hydrolyzed quinoa (HQ), was obtained by enzymatic hydrolysis from seeds of the quinoa variety BRS-Piabiru. Analysis of the physical and chemical properties of quinoa and HQ showed that the hydrolyzed extract is rich in essential amino acids, particularly those with branched chains (leucine, isoleucine, and valine). In addition, we evaluated the biological effects of HQ, particularly the toxicological potential. For this purpose, male Wistar rats were assigned randomly to four groups: (1) sedentary supplemented group, which received HQ (2,000 mg/kg); (2) sedentary control group, non-supplemented; (3) exercised supplemented group (i.e., rats subjected to aerobic physical exercise that received HQ [2,000 mg/kg]); and (4) exercised control group (i.e., rats subjected to aerobic physical exercise, non-supplemented). After 30 days, all groups were analyzed for levels of serum glucose, cholesterol, triacylglycerol, total protein, albumin, uric acid, and urea and activities of the enzymes alkaline phosphatase, aspartate aminotransferase, and alanine aminotransferase. Body weight gain, dietary intake, and lipid deposition were also analyzed. The results showed no hepatic and renal toxicity of HQ. Moreover, decreased food intake, body weight, fat deposition, and blood triacylglycerol level were observed in the supplemented groups (sedentary and exercised supplemented groups). These results suggest a potential use of HQ in human nutrition.
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Wilson Eik Filho,Bruna Juliana Wanczinski Ferrari,Marina Masetto Antunes,Patrícia Batista Travassos,Helenir Medri de Souza,Eniuce Menezes de Souza,Roberto Barbosa Bazotte 한국식품영양과학회 2021 Journal of medicinal food Vol.24 No.9
We compared the effect of oral glucose versus oral glucose combined with glycerol (glucose + glycerol) in promoting glucose recovery during hypoglycemia. These studies were carried out in two series of experiments. In the first series of experiments, 16 overnight fasted rats received an intraperitoneal injection of lispro insulin (1 IU/kg), and 25 min later, they received oral water (control), glucose (0.25 g/kg), glycerol (2.5 g/kg), or glucose (0.25 g/kg) + glycerol (2.5 g/kg). In the second series of experiments on 164 eligible type 1 diabetic (T1D) patients, 30 individuals with a history of hypoglycemia were recruited. Five volunteers did not meet the inclusion criteria and two subjects were excluded after starting the clinical investigation; 23 patients concluded the study. All patients with symptoms of hypoglycemia ingested oral glucose (15 g) or glucose (15 g) + glycerol (9.45 g). To treat hypoglycemia in T1D patients, preparations containing glucose alone or glucose + glycerol were used alternately (2 weeks/2 weeks) in a double-blind crossover scheme. Throughout the clinical research (4 weeks), glucose concentrations were assessed with a continuous glucose monitoring device and the results after the use of glucose alone or glucose + glycerol preparations were compared. Oral glucose combined with glycerol was more effective in promoting glucose recovery in comparison with glucose alone, not only in rats but also in T1D patients. Taken together, our experimental and clinical investigations reported the best performance of oral administration of glucose + glycerol in comparison with isolated glucose.
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