Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a signifi...Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic effect.Therefore,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was explored.Methods:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood glucose.Triglyceride,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were observed.The 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal flora.Based on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was analyzed.Results:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control group.And SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric acid.Conclusion:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in rats.SDP against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.展开更多
Type 1 diabetes mellitus(T1DM) lacks insulin secretion due to autoimmune deficiency of pancreaticβ-cells.Protecting pancreatic islets and enhancing insulin secretion has been therapeutic approaches.Mannogalactoglucan...Type 1 diabetes mellitus(T1DM) lacks insulin secretion due to autoimmune deficiency of pancreaticβ-cells.Protecting pancreatic islets and enhancing insulin secretion has been therapeutic approaches.Mannogalactoglucan is the main type of polysaccharide from natural mushroom,which has potential medicinal prospects.Nevertheless,the antidiabetic property of mannogalactoglucan in T1DM has not been fully elucidated.In this study,we obtained the neutral fraction of alkali-soluble Armillaria mellea polysaccharide(AAMP-N) with the structure of mannogalactoglucan from the fruiting body of A.mellea and investigated the potential therapeutic value of AAMP-N in T1DM.We demonstrated that AAMP-N lowered blood glucose and improved diabetes symptoms in T1DM mice.AAMP-N activated unfolded protein response(UPR) signaling pathway to maintain ER protein folding homeostasis and promote insulin secretion in vivo.Besides that,AAMP-N promoted insulin synthesis via upregulating the expression of transcription factors,increased Ca^(2+) signals to stimulate intracellular insulin secretory vesicle transport via activating calcium/calmodulin-dependent kinase Ⅱ(CamkⅡ) and cAMP/PKA signals,and enhanced insulin secretory vesicle fusion with the plasma membrane via vesicle-associated membrane protein 2(VAMP2).Collectively,these studies demonstrated that the therapeutic potential of AAMP-N on pancreatic islets function,indicating that mannogalactoglucan could be natural nutraceutical used for the treatment of T1DM.展开更多
目的:观察伏格列波糖联合西格列汀治疗2型糖尿病(T_(2)DM)对患者胰岛素抵抗的影响。方法:将贵溪市人民医院2021年1月—2023年9月收治的80例T_(2)DM患者随机分组,其中治疗组40例,对照组40例,治疗组采用伏格列波糖联合西格列汀治疗,对照...目的:观察伏格列波糖联合西格列汀治疗2型糖尿病(T_(2)DM)对患者胰岛素抵抗的影响。方法:将贵溪市人民医院2021年1月—2023年9月收治的80例T_(2)DM患者随机分组,其中治疗组40例,对照组40例,治疗组采用伏格列波糖联合西格列汀治疗,对照组单用西格列汀治疗。均治疗两个月,比较两组治疗前后血糖水平[空腹血糖(FBG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]、治疗前后胰岛素功能[空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)、胰岛素β细胞功能指数(HOMA-β)]、治疗后临床疗效及不良反应。结果:治疗后,两组FBG、2 h PG、HbA1c水平均显著降低(P<0.05),且治疗组均低于对照组,差异均有统计学意义(P<0.05)。治疗后,两组FINS、HOMA-IR水平均显著降低,HOMA-β水平均显著升高(P<0.05),且治疗组均优于对照组,差异均有统计学意义(P<0.05)。治疗组的总有效率高于对照组,差异有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:伏格列波糖联合西格列汀治疗T_(2)DM可显著降低患者血糖水平,有效改善胰岛素抵抗,整体效果突出,且安全性较高。展开更多
基金supported by the Fundamental Research Foundation of the National Natural Science Foundation of China(No.82174111)the State Administration of Traditional Chinese Medicine and the Sci-Tech Innovation Talent System Construction Program of Shaanxi University of Chinese Medicine(No.2023-CXTD-05).
文摘Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic effect.Therefore,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was explored.Methods:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood glucose.Triglyceride,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were observed.The 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal flora.Based on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was analyzed.Results:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control group.And SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric acid.Conclusion:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in rats.SDP against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.
基金funded by the National Natural Science Foundation of China (32371341,31872674)the Scientific and Technologic Foundation of Jilin Province (20230202050NC)the Fundamental Research Funds for the Central Universities (CGZH202206)。
文摘Type 1 diabetes mellitus(T1DM) lacks insulin secretion due to autoimmune deficiency of pancreaticβ-cells.Protecting pancreatic islets and enhancing insulin secretion has been therapeutic approaches.Mannogalactoglucan is the main type of polysaccharide from natural mushroom,which has potential medicinal prospects.Nevertheless,the antidiabetic property of mannogalactoglucan in T1DM has not been fully elucidated.In this study,we obtained the neutral fraction of alkali-soluble Armillaria mellea polysaccharide(AAMP-N) with the structure of mannogalactoglucan from the fruiting body of A.mellea and investigated the potential therapeutic value of AAMP-N in T1DM.We demonstrated that AAMP-N lowered blood glucose and improved diabetes symptoms in T1DM mice.AAMP-N activated unfolded protein response(UPR) signaling pathway to maintain ER protein folding homeostasis and promote insulin secretion in vivo.Besides that,AAMP-N promoted insulin synthesis via upregulating the expression of transcription factors,increased Ca^(2+) signals to stimulate intracellular insulin secretory vesicle transport via activating calcium/calmodulin-dependent kinase Ⅱ(CamkⅡ) and cAMP/PKA signals,and enhanced insulin secretory vesicle fusion with the plasma membrane via vesicle-associated membrane protein 2(VAMP2).Collectively,these studies demonstrated that the therapeutic potential of AAMP-N on pancreatic islets function,indicating that mannogalactoglucan could be natural nutraceutical used for the treatment of T1DM.
文摘目的:观察伏格列波糖联合西格列汀治疗2型糖尿病(T_(2)DM)对患者胰岛素抵抗的影响。方法:将贵溪市人民医院2021年1月—2023年9月收治的80例T_(2)DM患者随机分组,其中治疗组40例,对照组40例,治疗组采用伏格列波糖联合西格列汀治疗,对照组单用西格列汀治疗。均治疗两个月,比较两组治疗前后血糖水平[空腹血糖(FBG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]、治疗前后胰岛素功能[空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)、胰岛素β细胞功能指数(HOMA-β)]、治疗后临床疗效及不良反应。结果:治疗后,两组FBG、2 h PG、HbA1c水平均显著降低(P<0.05),且治疗组均低于对照组,差异均有统计学意义(P<0.05)。治疗后,两组FINS、HOMA-IR水平均显著降低,HOMA-β水平均显著升高(P<0.05),且治疗组均优于对照组,差异均有统计学意义(P<0.05)。治疗组的总有效率高于对照组,差异有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:伏格列波糖联合西格列汀治疗T_(2)DM可显著降低患者血糖水平,有效改善胰岛素抵抗,整体效果突出,且安全性较高。
