目的:评价有氧及抗阻运动对糖尿病前期患者的糖脂代谢水平、疾病转归情况以及心血管风险的影响。方法:选取2019年12月~2020年12月广西医科大学第一附属医院糖尿病前期患者84例,均接受糖尿病饮食宣教,用随机法分为有氧运动组及抗阻运动组...目的:评价有氧及抗阻运动对糖尿病前期患者的糖脂代谢水平、疾病转归情况以及心血管风险的影响。方法:选取2019年12月~2020年12月广西医科大学第一附属医院糖尿病前期患者84例,均接受糖尿病饮食宣教,用随机法分为有氧运动组及抗阻运动组各42例,两组3次/w中强度运动,50 min/次,进行为期12个月的运动干预。分析患者运动干预前、运动干预6个月后及运动干预12个月后的糖化血红蛋白(HbA1c)、血糖和血脂水平变化。结果:两组患者运动干预前基线资料、HbA1c、空腹血糖、餐后2 h血糖(2 h PG)、总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)生化指标比较差异无统计学意义(P>0.05);两组患者运动干预6、12个月后各项指标较干预前均有改善,差异有统计学意义(P<0.05)。两组运动干预6个月后,抗阻组降低2 h PG水平优于有氧运动组,差异有统计学意义(P<0.05),HbA1c、空腹血糖、TC、TG、HDL-C和LDL-C指标比较差异无统计学意义(P>0.05)。两组运动干预12个月后,抗阻组降低HbA1c、空腹血糖和2 h PG水平优于有氧运动组,差异有统计学意义(P<0.05),TC、TG、HDL-C和LDL-C指标两组比较差异无统计学意义(P>0.05)。结论:有氧及抗阻运动有效改善糖尿病前期患者血糖水平和脂质代谢,延缓病情发展,降低心血管风险,运动疗法对糖尿病前期人群转归正常具有积极作用。展开更多
Aim To investigate the effect of berberine on damaged morphology and glucolipid metabolization in skeletal muscle of diabetic rat and the relationship between peroxisome proliferator-activated receptor （PPARs） α/γ...Aim To investigate the effect of berberine on damaged morphology and glucolipid metabolization in skeletal muscle of diabetic rat and the relationship between peroxisome proliferator-activated receptor （PPARs） α/γ/δ protein expression. Methods Type 2 diabetes mellitus rats were induced by an injection of 35 mg.kg^-1 streptozotocin （STZ） and a high-carbohydrate/ high-fat diet for 16 weeks. From week 17 to 32, diabetic rats were given low-, middle-, high-dose berberine （75, 150, 300 mg.kg^-1）, fenofibrate （100 mg.kg^-1） and rosiglitazone （4 mg.kg^-1） by oral administration, respectively. The skeletal muscle structure was observed with hematoxylin-eosin （HE） staining, glycogen and triglyceride contents were measured by spectrophotometry and PPAR α/γ/δ protein expressions were detected by immunohistochemistry. Results Fiber distribution remained normal in skeletal muscles of all the groups, middle-, high-dose berberine partly improved diabetic fibre atrophy, increased glycogen and decreased triglyceride levels in diabetic muscle （P〈 0.01）. Middle-, high-dose berberine and rosiglitazone all significantly reduced PPARy protein level in diabetic skeletal muscle （P 〈 0.01）; middle-, high-dose berberine and fenofibrate strikingly increased both PPARu and PPAR8 expression （P〈 0.01）. Conclusion Berberine modulates PPAR α/γ/δ protein expression in diabetic skeletal muscle which may contribute to ameliorate fibre damage and glucolipid metabolization.展开更多
Background Cold stress has negative effects on the growth and health of mammals, and has become a factor restricting livestock development at high latitudes and on plateaus. The gut-liver axis is central to energy met...Background Cold stress has negative effects on the growth and health of mammals, and has become a factor restricting livestock development at high latitudes and on plateaus. The gut-liver axis is central to energy metabolism, and the mechanisms by which it regulates host energy metabolism at cold temperatures have rarely been illustrated. In this study, we evaluated the status of glycolipid metabolism and oxidative stress in pigs based on the gut-liver axis and propose that AMP-activated protein kinase(AMPK) is a key target for alleviating energy stress at cold temperatures by dietary fat supplementation.Results Dietary fat supplementation alleviated the negative effects of cold temperatures on growth performance and digestive enzymes, while hormonal homeostasis was also restored. Moreover, cold temperature exposure increased glucose transport in the jejunum. In contrast, we observed abnormalities in lipid metabolism, which was characterized by the accumulation of bile acids in the ileum and plasma. In addition, the results of the ileal metabolomic analysis were consistent with the energy metabolism measurements in the jejunum, and dietary fat supplementation increased the activity of the mitochondrial respiratory chain and lipid metabolism. As the central nexus of energy metabolism, the state of glycolipid metabolism and oxidative stress in the liver are inconsistent with that in the small intestine. Specifically, we found that cold temperature exposure increased glucose transport in the liver, which fully validates the idea that hormones can act on the liver to regulate glucose output. Additionally, dietary fat supplementation inhibited glucose transport and glycolysis, but increased gluconeogenesis, bile acid cycling, and lipid metabolism. Sustained activation of AMPK, which an energy receptor and regulator, leads to oxidative stress and apoptosis in the liver;dietary fat supplementation alleviates energy stress by reducing AMPK phosphorylation.Conclusions Cold stress reduced the growth performance and aggravated glycolipid metabolism disorders and oxidative stress damage in pigs. Dietary fat supplementation improved growth performance and alleviated cold temperature-induced energy stress through AMPK-mediated mitochondrial homeostasis. In this study, we high-light the importance of AMPK in dietary fat supplementation-mediated alleviation of host energy stress in response to environmental changes.展开更多
文摘目的:评价有氧及抗阻运动对糖尿病前期患者的糖脂代谢水平、疾病转归情况以及心血管风险的影响。方法:选取2019年12月~2020年12月广西医科大学第一附属医院糖尿病前期患者84例,均接受糖尿病饮食宣教,用随机法分为有氧运动组及抗阻运动组各42例,两组3次/w中强度运动,50 min/次,进行为期12个月的运动干预。分析患者运动干预前、运动干预6个月后及运动干预12个月后的糖化血红蛋白(HbA1c)、血糖和血脂水平变化。结果:两组患者运动干预前基线资料、HbA1c、空腹血糖、餐后2 h血糖(2 h PG)、总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)生化指标比较差异无统计学意义(P>0.05);两组患者运动干预6、12个月后各项指标较干预前均有改善,差异有统计学意义(P<0.05)。两组运动干预6个月后,抗阻组降低2 h PG水平优于有氧运动组,差异有统计学意义(P<0.05),HbA1c、空腹血糖、TC、TG、HDL-C和LDL-C指标比较差异无统计学意义(P>0.05)。两组运动干预12个月后,抗阻组降低HbA1c、空腹血糖和2 h PG水平优于有氧运动组,差异有统计学意义(P<0.05),TC、TG、HDL-C和LDL-C指标两组比较差异无统计学意义(P>0.05)。结论:有氧及抗阻运动有效改善糖尿病前期患者血糖水平和脂质代谢,延缓病情发展,降低心血管风险,运动疗法对糖尿病前期人群转归正常具有积极作用。
文摘Aim To investigate the effect of berberine on damaged morphology and glucolipid metabolization in skeletal muscle of diabetic rat and the relationship between peroxisome proliferator-activated receptor （PPARs） α/γ/δ protein expression. Methods Type 2 diabetes mellitus rats were induced by an injection of 35 mg.kg^-1 streptozotocin （STZ） and a high-carbohydrate/ high-fat diet for 16 weeks. From week 17 to 32, diabetic rats were given low-, middle-, high-dose berberine （75, 150, 300 mg.kg^-1）, fenofibrate （100 mg.kg^-1） and rosiglitazone （4 mg.kg^-1） by oral administration, respectively. The skeletal muscle structure was observed with hematoxylin-eosin （HE） staining, glycogen and triglyceride contents were measured by spectrophotometry and PPAR α/γ/δ protein expressions were detected by immunohistochemistry. Results Fiber distribution remained normal in skeletal muscles of all the groups, middle-, high-dose berberine partly improved diabetic fibre atrophy, increased glycogen and decreased triglyceride levels in diabetic muscle （P〈 0.01）. Middle-, high-dose berberine and rosiglitazone all significantly reduced PPARy protein level in diabetic skeletal muscle （P 〈 0.01）; middle-, high-dose berberine and fenofibrate strikingly increased both PPARu and PPAR8 expression （P〈 0.01）. Conclusion Berberine modulates PPAR α/γ/δ protein expression in diabetic skeletal muscle which may contribute to ameliorate fibre damage and glucolipid metabolization.
基金funded by the National Key Research and Development Program of China (2021YFD1300403)。
文摘Background Cold stress has negative effects on the growth and health of mammals, and has become a factor restricting livestock development at high latitudes and on plateaus. The gut-liver axis is central to energy metabolism, and the mechanisms by which it regulates host energy metabolism at cold temperatures have rarely been illustrated. In this study, we evaluated the status of glycolipid metabolism and oxidative stress in pigs based on the gut-liver axis and propose that AMP-activated protein kinase(AMPK) is a key target for alleviating energy stress at cold temperatures by dietary fat supplementation.Results Dietary fat supplementation alleviated the negative effects of cold temperatures on growth performance and digestive enzymes, while hormonal homeostasis was also restored. Moreover, cold temperature exposure increased glucose transport in the jejunum. In contrast, we observed abnormalities in lipid metabolism, which was characterized by the accumulation of bile acids in the ileum and plasma. In addition, the results of the ileal metabolomic analysis were consistent with the energy metabolism measurements in the jejunum, and dietary fat supplementation increased the activity of the mitochondrial respiratory chain and lipid metabolism. As the central nexus of energy metabolism, the state of glycolipid metabolism and oxidative stress in the liver are inconsistent with that in the small intestine. Specifically, we found that cold temperature exposure increased glucose transport in the liver, which fully validates the idea that hormones can act on the liver to regulate glucose output. Additionally, dietary fat supplementation inhibited glucose transport and glycolysis, but increased gluconeogenesis, bile acid cycling, and lipid metabolism. Sustained activation of AMPK, which an energy receptor and regulator, leads to oxidative stress and apoptosis in the liver;dietary fat supplementation alleviates energy stress by reducing AMPK phosphorylation.Conclusions Cold stress reduced the growth performance and aggravated glycolipid metabolism disorders and oxidative stress damage in pigs. Dietary fat supplementation improved growth performance and alleviated cold temperature-induced energy stress through AMPK-mediated mitochondrial homeostasis. In this study, we high-light the importance of AMPK in dietary fat supplementation-mediated alleviation of host energy stress in response to environmental changes.
