期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Role of bisphosphonates in osteoporosis caused by adult growth hormone deficiency
1
作者 CHENG Zhiling LI Jie +1 位作者 CHEN Zhongpei REN Wei 《中南大学学报(医学版)》 CAS CSCD 北大核心 2024年第6期839-847,共9页
In recent years,growth hormone and insulin-like growth factors have become key regulators of bone metabolism and remodeling,crucial for maintaining healthy bone mass throughout life.Studies have shown that adult growt... In recent years,growth hormone and insulin-like growth factors have become key regulators of bone metabolism and remodeling,crucial for maintaining healthy bone mass throughout life.Studies have shown that adult growth hormone deficiency leads to alterations in bone remodeling,significantly affecting bone microarchitecture and increasing fracture risk.Although recombinant human growth hormone replacement therapy can mitigate these adverse effects,improving bone density,and reduce fracture risk,its effectiveness in treating osteoporosis,especially in adults with established growth hormone deficiency,seems limited.Bisphosphonates inhibit bone resorption by targeting farnesyl pyrophosphate synthase in osteoclasts,and clinical trials have confirmed their efficacy in improving osteoporosis.Therefore,for adult growth hormone deficiency patients with osteoporosis,the use of bisphosphonates alongside growth hormone replacement therapy is recommended. 展开更多
关键词 growth hormone adult growth hormone deficiency OSTEOPOROSIS BISPHOSPHONATES insulin-like growth factor 1 SKELETON
下载PDF
p38MAPK基因RNAi慢病毒载体的构建及在MC3T3-E1细胞的表达 被引量:2
2
作者 冯正平 邓华聪 +3 位作者 姜蓉 杜佳 陈丹燕 梁小燕 《第三军医大学学报》 CAS CSCD 北大核心 2010年第15期1598-1601,共4页
目的构建小鼠p38MAPK基因RNAi慢病毒载体,观察其对MC3T3-E1成骨细胞p38MAPK表达及细胞凋亡的影响。方法设计并合成3对互补的针对小鼠p38MAPK mRNA的oligoDNA片段,退火形成双链DNA,与经HpaⅠ酶切后的载体连接,PCR筛选阳性克隆,测序鉴定... 目的构建小鼠p38MAPK基因RNAi慢病毒载体,观察其对MC3T3-E1成骨细胞p38MAPK表达及细胞凋亡的影响。方法设计并合成3对互补的针对小鼠p38MAPK mRNA的oligoDNA片段,退火形成双链DNA,与经HpaⅠ酶切后的载体连接,PCR筛选阳性克隆,测序鉴定。重组质粒与慢病毒包装载体共转染293T细胞,包装产生慢病毒,流式细胞仪检测病毒滴度,p38MAPK-shRNA慢病毒载体转染体外培养MC3T3-E1细胞,荧光定量PCR检测MC3T3-E1细胞p38MAPK mRNA表达,进行p38MAPK干扰有效靶点的筛选。22.2 mol/L葡萄糖刺激培养MC3T3-E1细胞7 d,Westernblot检测MC3T3-E1细胞p38MAPK蛋白的表达,流式细胞术检测MC3T3-E1细胞凋亡。结果酶切和测序均证实各重组质粒核苷酸序列插入正确,所得质粒分别命名为p38MAPK-shRNA1、p38MAPK-shRNA2、p38MAPK-shRNA3,流式细胞仪测定病毒滴度分别为2.4×108、2.8×108、2.5×108TU/ml。p38MAPK-shRNA转染MC3T3-E1细胞效率达到74%以上,RT-PCR检测结果显示,各p38MAPK-shRNA转染组MC3T3-E1细胞p38MAPK mRNA表达较正常对照组分别下降了78.8%、84.3%和60.2%(P<0.01),其中以p38MAPK-shRNA2的干扰效率最高。Western blot检测结果显示,与正常对照组相比,高糖组、空载体转染组MC3T3-E1细胞p-p38MAPK蛋白表达明显增加(P<0.01)。p38MAPK-shRNA慢病毒转染组MC3T3-E1细胞p-p38MAPK蛋白表达水平较高糖组明显下调(P<0.01)。流式细胞仪检测结果显示,与正常对照组相比,高糖组MC3T3-E1细胞凋亡率显著增加(P<0.01);p38MAPK-shRNA慢病毒转染组以及p38MAPK信号转导阻断剂组较高糖组MC3T3-E1细胞凋亡率明显减少(P<0.05,P<0.01)。结论成功构建了靶向p38MAPK基因RNAi慢病毒载体,其能有效抑制MC3T3-E1细胞p38MAPK基因表达,减少高糖诱导的MC3T3-E1细胞凋亡。 展开更多
关键词 P38MAPK 成骨细胞 RNA干扰 慢病毒属
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部