背景:高密度脂蛋白是指与脂代谢有关的高密度脂蛋白,但研究表明其功能不仅局限于脂代谢范畴;同时运动调节高密度脂蛋白的活性和数量,但最佳的运动方式有待于研究。目的:总结高密度脂蛋白的生物学功能及运动调节高密度脂蛋白研究进展,展...背景:高密度脂蛋白是指与脂代谢有关的高密度脂蛋白,但研究表明其功能不仅局限于脂代谢范畴;同时运动调节高密度脂蛋白的活性和数量,但最佳的运动方式有待于研究。目的:总结高密度脂蛋白的生物学功能及运动调节高密度脂蛋白研究进展,展望了高密度脂蛋白研究的可能方向,旨在为健身训练方案的制定提供理论支持,为后续研究提供参考;方法:以关键词"HDL and exercise,HDL and biological function"搜索Pub Med数据库,筛选到1990至2015年间文章98篇;按纳入、排除标准最后纳入文献44篇。结果与结论:高密度脂蛋白主要功能包括介导糖、蛋白质、脂肪代谢、抗炎、抗氧化及介导胰岛素分泌的功能,同时总结运动对高密度脂蛋白浓度,分子数及组份影响的研究。研究表明抗阻与耐力组合训练提高高密度脂蛋白浓度及功能效果最显著。展开更多
The relationship between Nigerian Bonny Light crude oil (NBLCO) induced hypoglycaemia and endogenous serum insulin concentration;the role of antioxidant vitamin C or E supplementation was the focus of this study. Fort...The relationship between Nigerian Bonny Light crude oil (NBLCO) induced hypoglycaemia and endogenous serum insulin concentration;the role of antioxidant vitamin C or E supplementation was the focus of this study. Forty adult male Wistar rats were randomly divided into group I, which served as the control, group II, which was oral gavaged 6 ml/kg of NBLCO, groups III and IV, which were in addition to 6 ml/kg of NBLCO supplemented with 9 ml/kg and 1 mg/kg of vitamin E or C, respectively for 28 days. Results showed that NBLCO significantly (p < 0.05) lower body weight and food intake compared with control. These effects exerted by NBLCO were however significantly (p < 0.05) reversed by vitamin E or C supplementation. The NBLCO significantly (p < 0.05) reduced fasting blood glucose (FBG) when compared with control, the antioxidant vitamins supplementation significantly (p < 0.05) reversed the crude oil effect. The mean serum insulin level in NBLCO, vitamin E or C supplemented groups is not significantly different from the control. There was no significant correlation between FBG and fasting serum insulin concentrations in all the groups on day 28. It has been demonstrated in this study that direct oral ingestion of crude oil (NBLCO) could reduce food intake, body weight and cause hypoglycemia;the hypoglycemia may not be a function of serum insulin concentration. Interestingly, the hazardous effects of NBLCO could be ameliorated with antioxidant vitamin C or E supplementation.展开更多
Objective:To investigate the relationship between polymorphism within the 5'-untranslated region(5'-UTR)of IGF-I gene and its periparturient concentration in Iranian Holstein dairy cows.Methods:Blood samples(5...Objective:To investigate the relationship between polymorphism within the 5'-untranslated region(5'-UTR)of IGF-I gene and its periparturient concentration in Iranian Holstein dairy cows.Methods:Blood samples(5 mL,n=37)were collected by caudal venipuncture from each animal into sample lubes containing the EDTA and DNA was extracted from blood.In order to measure ICF-I concentration the collection of blood samples(n=111)was also done at 14 d before calving(prepartum),25 and 45 d postpartum.Results:We found evidence for a significant effect of C to T mutation in position 512 of IGF-I gene on its serum concentration in dairy cows in Iran.Cows with CC genotype had significantly higher concentration(Mean-SD)of IGF-I at 14 d prepartum(91.8±18.1)μg/L compared to those with TT genotype(73.3±14.4)μg/L(P=0.04).A significant trend(quadratic)was found for IGF-I concentration,as higher in CC cows compared to ones with TT genotype,during the 14 d before calving to 45 d postpartum(P=0.01).Conclusions:We concluded that C/T transition in the promoter region of IGF-I gene can influence the serum concentration of ICF-I in periparturient dairy cows.展开更多
文摘背景:高密度脂蛋白是指与脂代谢有关的高密度脂蛋白,但研究表明其功能不仅局限于脂代谢范畴;同时运动调节高密度脂蛋白的活性和数量,但最佳的运动方式有待于研究。目的:总结高密度脂蛋白的生物学功能及运动调节高密度脂蛋白研究进展,展望了高密度脂蛋白研究的可能方向,旨在为健身训练方案的制定提供理论支持,为后续研究提供参考;方法:以关键词"HDL and exercise,HDL and biological function"搜索Pub Med数据库,筛选到1990至2015年间文章98篇;按纳入、排除标准最后纳入文献44篇。结果与结论:高密度脂蛋白主要功能包括介导糖、蛋白质、脂肪代谢、抗炎、抗氧化及介导胰岛素分泌的功能,同时总结运动对高密度脂蛋白浓度,分子数及组份影响的研究。研究表明抗阻与耐力组合训练提高高密度脂蛋白浓度及功能效果最显著。
文摘The relationship between Nigerian Bonny Light crude oil (NBLCO) induced hypoglycaemia and endogenous serum insulin concentration;the role of antioxidant vitamin C or E supplementation was the focus of this study. Forty adult male Wistar rats were randomly divided into group I, which served as the control, group II, which was oral gavaged 6 ml/kg of NBLCO, groups III and IV, which were in addition to 6 ml/kg of NBLCO supplemented with 9 ml/kg and 1 mg/kg of vitamin E or C, respectively for 28 days. Results showed that NBLCO significantly (p < 0.05) lower body weight and food intake compared with control. These effects exerted by NBLCO were however significantly (p < 0.05) reversed by vitamin E or C supplementation. The NBLCO significantly (p < 0.05) reduced fasting blood glucose (FBG) when compared with control, the antioxidant vitamins supplementation significantly (p < 0.05) reversed the crude oil effect. The mean serum insulin level in NBLCO, vitamin E or C supplemented groups is not significantly different from the control. There was no significant correlation between FBG and fasting serum insulin concentrations in all the groups on day 28. It has been demonstrated in this study that direct oral ingestion of crude oil (NBLCO) could reduce food intake, body weight and cause hypoglycemia;the hypoglycemia may not be a function of serum insulin concentration. Interestingly, the hazardous effects of NBLCO could be ameliorated with antioxidant vitamin C or E supplementation.
基金supported by grant of the School of Veterinary MedicineShiraz University(grant number:87GRVT47)and partly by National Elite Foundation of Iran(number:88GRDIM83440)
文摘Objective:To investigate the relationship between polymorphism within the 5'-untranslated region(5'-UTR)of IGF-I gene and its periparturient concentration in Iranian Holstein dairy cows.Methods:Blood samples(5 mL,n=37)were collected by caudal venipuncture from each animal into sample lubes containing the EDTA and DNA was extracted from blood.In order to measure ICF-I concentration the collection of blood samples(n=111)was also done at 14 d before calving(prepartum),25 and 45 d postpartum.Results:We found evidence for a significant effect of C to T mutation in position 512 of IGF-I gene on its serum concentration in dairy cows in Iran.Cows with CC genotype had significantly higher concentration(Mean-SD)of IGF-I at 14 d prepartum(91.8±18.1)μg/L compared to those with TT genotype(73.3±14.4)μg/L(P=0.04).A significant trend(quadratic)was found for IGF-I concentration,as higher in CC cows compared to ones with TT genotype,during the 14 d before calving to 45 d postpartum(P=0.01).Conclusions:We concluded that C/T transition in the promoter region of IGF-I gene can influence the serum concentration of ICF-I in periparturient dairy cows.
