AIM: To explore the possibility of marrow mesenchymal stem cells (MSC) in vitro differentiating into functional isletlike cells and to test the diabetes therapeutic potency of Islet-like cells. METHODS: Rat MSCs were ...AIM: To explore the possibility of marrow mesenchymal stem cells (MSC) in vitro differentiating into functional isletlike cells and to test the diabetes therapeutic potency of Islet-like cells. METHODS: Rat MSCs were isolated from Wistar rats and cultured. Passaged MSCs were induced to differentiate into islet-like cells under following conditions: pre-induction with L-DMEM including 10 mmol/L nicotinamide+l mmol/L β-mercaptoethanol+200 mL/L fetal calf serum (FSC) for 24 h, followed by induction with serum free H-DMEM solution including 10 mmol/L nicotinamide+1 mmol/L,β-mercaptoethanol for 10 h. Differentiated cells were observed under inverse microscopy, insulin and nestin expressed in differentiated cells were detected with immunocytochemistry. Insulin excreted from differentiated cells was tested with radioimmunoassay. Rat diabetic models were made to test in vivo function of differentiated MSCs. RESULTS: Typical islet-like clustered cells were observed. Insulin mRNA and protein expressions were positive in differentiated cells, and nestin could be detected in predifferentiated cells. Insulin excreted from differentiated MSCs (446.93±102.28 IU/L) was much higher than that from pre-differentiated MSCs (2.45+0.81 IU/L (P<0.01). Injected differentiated MSCs cells could down-regulate glucose level in diabetic rats. CONCLUSION: Islet-like functional cells can be differentiated from marrow mesenchymal stem cells, which may be a new procedure for clinical diabetes stem -cell therapy, these cells can control blood glucose level in diabetic rats. MSCs may play an important role in diabetes therapy by islet differentiation and transplantation.展开更多
目的观察健脾滋阴消渴方联合西医常规疗法治疗2型糖尿病气阴两虚证患者临床疗效,及对患者胰岛素敏感性和胰岛β细胞功能的影响。方法采用随机数字表法将87例患者分为对照组(43例)和观察组(44例)。对照组予西医常规治疗;观察组在对照组...目的观察健脾滋阴消渴方联合西医常规疗法治疗2型糖尿病气阴两虚证患者临床疗效,及对患者胰岛素敏感性和胰岛β细胞功能的影响。方法采用随机数字表法将87例患者分为对照组(43例)和观察组(44例)。对照组予西医常规治疗;观察组在对照组基础上予健脾滋阴消渴方,每日1剂,每日2次,口服。2组均连续治疗2周。比较2组临床疗效,观察2组治疗前后餐后2 h血糖(2 h PBG)、空腹血糖(FBG)、胰岛素敏感指数(ISI)、胰岛β细胞功能指数(HOMA-β)、丙二醛(MDA)、超氧化物歧化酶(SOD)水平及中医症状积分。结果与本组治疗前比较,2组治疗后2hPBG、FBG、MDA水平明显降低,ISI、HOMA-β、SOD水平明显升高,差异有统计学意义(P<0.05);2组治疗后比较,观察组2hPBG、FBG、MDA水平低于对照组,ISI、HOMA-β、SOD水平高于对照组,差异有统计学意义(P<0.05)。与本组治疗前比较,2组治疗后乏力、多饮多食、五心烦热积分明显降低(P<0.05);2组治疗后比较,观察组上述症状积分明显低于对照组(P<0.05)。观察组总有效率为88.64%(39/44),对照组为69.77%(30/43),差异有统计学意义(P<0.05)。观察组低血糖发生率为6.82%(3/44),对照组为13.95%(6/43),差异无统计学意义(P>0.05)。结论健脾滋阴消渴方联合西医常规疗法治疗2型糖尿病气阴两虚证可提高临床疗效,有效减轻患者氧化应激反应,改善胰岛功能,增强胰岛素敏感性。展开更多
基金Supported by the National Natural Science Foundation of China,No.30170911
文摘AIM: To explore the possibility of marrow mesenchymal stem cells (MSC) in vitro differentiating into functional isletlike cells and to test the diabetes therapeutic potency of Islet-like cells. METHODS: Rat MSCs were isolated from Wistar rats and cultured. Passaged MSCs were induced to differentiate into islet-like cells under following conditions: pre-induction with L-DMEM including 10 mmol/L nicotinamide+l mmol/L β-mercaptoethanol+200 mL/L fetal calf serum (FSC) for 24 h, followed by induction with serum free H-DMEM solution including 10 mmol/L nicotinamide+1 mmol/L,β-mercaptoethanol for 10 h. Differentiated cells were observed under inverse microscopy, insulin and nestin expressed in differentiated cells were detected with immunocytochemistry. Insulin excreted from differentiated cells was tested with radioimmunoassay. Rat diabetic models were made to test in vivo function of differentiated MSCs. RESULTS: Typical islet-like clustered cells were observed. Insulin mRNA and protein expressions were positive in differentiated cells, and nestin could be detected in predifferentiated cells. Insulin excreted from differentiated MSCs (446.93±102.28 IU/L) was much higher than that from pre-differentiated MSCs (2.45+0.81 IU/L (P<0.01). Injected differentiated MSCs cells could down-regulate glucose level in diabetic rats. CONCLUSION: Islet-like functional cells can be differentiated from marrow mesenchymal stem cells, which may be a new procedure for clinical diabetes stem -cell therapy, these cells can control blood glucose level in diabetic rats. MSCs may play an important role in diabetes therapy by islet differentiation and transplantation.
文摘目的观察健脾滋阴消渴方联合西医常规疗法治疗2型糖尿病气阴两虚证患者临床疗效,及对患者胰岛素敏感性和胰岛β细胞功能的影响。方法采用随机数字表法将87例患者分为对照组(43例)和观察组(44例)。对照组予西医常规治疗;观察组在对照组基础上予健脾滋阴消渴方,每日1剂,每日2次,口服。2组均连续治疗2周。比较2组临床疗效,观察2组治疗前后餐后2 h血糖(2 h PBG)、空腹血糖(FBG)、胰岛素敏感指数(ISI)、胰岛β细胞功能指数(HOMA-β)、丙二醛(MDA)、超氧化物歧化酶(SOD)水平及中医症状积分。结果与本组治疗前比较,2组治疗后2hPBG、FBG、MDA水平明显降低,ISI、HOMA-β、SOD水平明显升高,差异有统计学意义(P<0.05);2组治疗后比较,观察组2hPBG、FBG、MDA水平低于对照组,ISI、HOMA-β、SOD水平高于对照组,差异有统计学意义(P<0.05)。与本组治疗前比较,2组治疗后乏力、多饮多食、五心烦热积分明显降低(P<0.05);2组治疗后比较,观察组上述症状积分明显低于对照组(P<0.05)。观察组总有效率为88.64%(39/44),对照组为69.77%(30/43),差异有统计学意义(P<0.05)。观察组低血糖发生率为6.82%(3/44),对照组为13.95%(6/43),差异无统计学意义(P>0.05)。结论健脾滋阴消渴方联合西医常规疗法治疗2型糖尿病气阴两虚证可提高临床疗效,有效减轻患者氧化应激反应,改善胰岛功能,增强胰岛素敏感性。
