检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:王竹晨[1] 胡钶[2] 赖伟英[1] 丘惠娜[1] 李丽文[1] 顾熊飞[3]
机构地区:[1]广东省深圳市第二人民医院妇产科,深圳518035 [2]深圳市宝安区人民医院 [3]中山大学北校区
出 处:《临床医学》2007年第11期87-89,共3页Clinical Medicine
基 金:广东省自然科学基金博士科研启动基金(编号:5301121)
摘 要:目的探讨肿瘤坏死因子(TNF-α)对体外培养的人脂肪细胞胰岛素刺激的葡萄糖摄取的影响,为多囊卵巢综合征(PCOS)的胰岛素抵抗(IR)病因学研究提供新的实验依据。方法脂肪细胞葡萄糖摄取的测定采用3H标脱氧右旋葡萄糖(2-[3H]DG)吸收法。结果胰岛素(100 nmol/L)作用下,TNF刺激浓度分别为0、5、10、20 ng/m l时,脂肪细胞2-[3H]DG的摄取分别为(676±235)U、(598±168)U、(533±134)和(414±162)U,当TNF-α刺激浓度达20 ng/m时l,脂肪细胞对葡萄糖摄取的降低差异有统计学意义(P<0.05)。结论TNF-α刺激浓度的升高可抑制体外培养的人脂肪细胞胰岛素刺激的葡萄糖摄取,并存在一定的量效关系,TNF-α可能阻碍了胰岛素的受体后信号传导并与IR有关。Objective To approach the effect of tumor necrosis factor alpha(TNF - α)on glucose uptake in cultured fat cell and provide new experimental data for probing into the pathogenesis of insulin resistance (IR) in polycystic ovary syndrome (PCOS). Mαhods Glucose uptake was assayed using 2 - [^3H] DG. Results With INS (100 nmol/L) stimulation,when the stimulating concentration of TNF - α was 0, 5, 10 ng/ml, and 20 ng/ml, 2 - [ 3 H ] DG uptake in adipoeytes was ( 676 ± 235 ) U, (598 ± 168 ) U, (533 ± 134 ) U and (414 + 162 ) U respectively. As the stimulating concentration of TNF - α was 20 ng/ml, the difference was significant ( P 〈 0.05). Conclusion TNF - α could reduce glucose uptake stimulated by INS in cultured human adip0cytes. As the stimulating concentration of TNF -u increasing,it decreases more markedly which might restrain insulin -signaling transduction downstream of INS receptor and induce IR.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.29