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目的 研究激素性股骨头坏死股骨头内局部过氧化物酶体增殖物激活受体γ(peroxisome proliferators-activated receptor γ,PPARγ)和BMP2的基因表达及蛋白合成的动态变化.方法 健康成年新西兰大白兔,共35只,雌雄各半,质量2.6~3.2 kg,平均2.9 kg.完全随机的方法将实验动物分为正常对照组15只,模型组20只.用改进的马血清加甲基强的松龙的方法诱导制成兔激素性股骨头坏死动物模型,HE染色确定模型的成功建立,提取兔股骨头内总RNA及总蛋白进行实时定量PCR及Western blot检测,研究不同时段坏死股骨头内PPARγ及BMP2的基因表达、蛋白合成的动态变化特点.结果 造模后2、4、8周时,模型组动物股骨头内PPARγ的基因表达、蛋白合成较对照组上调,其中PPARγ mRNA的表达量分别为正常组的1.2583、1.4329、2.0135倍,且随时间的推移PPARγ的基因表达、蛋白合成呈进行性上调趋势.模型组动物股骨头内BMP2的基因表达、蛋白合成较对照组下降,其中BMP2 mRNA的表达量在造模后2、4、8周分别为正常组的0.3264、0.1317、0.1253倍.BMP2蛋白合成量与病程的时间呈负相关.结论 素性股骨头坏死早期,股骨头内PPARγ过度表达,而BMP2的表达受到抑制. 相似文献
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目的 合成和筛选nogc66-siRNA干扰片段,克隆神经生长因子-β(NGF-β),构建含nogu66-siRNA和NGF-β双基因的重组腺相关病毒穿梭质粒.方法 设计针对nogo66的siRNA,插入载体pGenesil-1.1,转染大鼠胶质瘤C6细胞,通过RT-PCR和Western-blot检测筛选有效的干扰质粒;培养人MI-Apaca-2细胞,提取总RNA,进行RT-PCR得到人NGF-β基因,插入T-easy载体;将pGenesil-1.1与pAAV-MCS进行重组,得到含U6和CMV双启动子的重组腺相关病毒穿梭质粒pAAV-U6/CMV-EGFP;将nogo66-siRNA和NGF-β分别插入pAAV-U6/CMV-EGFP中,构建含nogo66-siRNA和NGF-β双基因的重组腺相关病毒穿梭质粒.结果 干扰质粒pGenesil-nogo66-siRNA测序显示干扰序列正确;RT-PCR结果显示转染后各条带相对亮度有差异,转染pGenesil-nogo66-siRNA-1和pGenesil-nogo66-siRNA-2使nogo基因表达降低;Western-blot结果显示转染pGenesil-nogo66-siRNA-1使NOGO蛋白表达下降73%,转染pGenesil-nogo66-siRNA-2使NOGO蛋白表达下降78%,与未转染组相比,差异有统计学意义(P<0.05);质粒T-easy-NGF-β酶切可见3000 bp、736 bp条带,测序显示基因序列正确;酶切pAAV-U6/CMV-EGFP、pAAV-U6-nogo66-siRNA/CMV-EGFP可见4300 bp、800 bp条带,转染细胞后均可见绿色荧光蛋白表达;酶切pAAV-U6/CMV-NGF-β、pAAV-U6-nogo66-siRNA/CMV-NGF-β可见4300 bp、736 bp条带;质粒pAAV-U6βnogo66-siRNA/CMV-NGF-β测序显示载体中的基因序列止确.结论 成功构建了含有nogo66-siRNA与NGF-β双基因的重组腺相关病毒穿梭质粒,为深入研究脊髓损伤的修复提供了实验基础. 相似文献
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Clinical experimental study of Arnebia root oil promoting histological change and up-regulating bFGF expression in the wound 总被引:1,自引:0,他引:1
Objective: To explore the molecular biological mechanism of Arnebia root oil promoting wound surface healing by observing histological change and bFGF expression in wound surface tissue as well as wound surface healing rate. Methods: Raw surface in patients were randomly divided into 2 groups. Experimental group was treated by Arnebia root oil and control group was treated by petrolatum gauze, then the tissular structure of raw surface was observed by histology, histochemistry, electron microscope and raw surface healing rates was compared either, bFGF expression in wound surface tissue was also evaluated by Western-blot. Results: Raw surface healing rate of experimental group and control group had obvious difference(P〈0.05). Raw surface of experimental group had more fibroblast, collagen and blood capillary, bFGF was expressed in both groups, and the level of bFGF expression in experimental group was higher than that in control group in every period. There were significant differences between 2 groups in gray-density value ( P〈0. 05). Being as an internal control, no significant change was found for β-actin expression, although it occured in various phases. Conclusion: Arnebia root oil plays an important regulative role in the course of healing of wound and it can promote skin raw surface repair and accelerate wound surface healing, which are caused by enhancing bFGF in the wound tissue. 相似文献
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股骨颈骨折采用经皮穿多根骨圆针单臂外固定支架治疗,有多项优点。但因常规进针时针穿过了阔筋膜及股外侧肌,影响了膝关节活动,最终影响了整个下肢的活动,产生了许多术后并发症。通过对进针途径的改进,避免了膝关节活动受限,减少了术后并发症的发生,治疗效果更好。 相似文献
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目的:观察不同方法治疗膝关节骨性关节炎的疗效。方法:对膝关节骨性关节炎(KOA)60例,使用随机分组法进行分组,分别予双醋瑞因(安必丁)、氨基葡萄糖和消炎镇痛药。选择合适病人20例给予关节注射玻璃酸钠治疗,随访并观察临床疗效及不良反应。结果:四种方法治疗膝骨性关节炎疗效确切,各组治疗前后各项指标均差异显著;认为安必丁组缓解关节疼痛与葡立组及乐松组差别有统计学意义,其中主要是在缓解行走时疼痛方面安必丁组与葡立组及乐松组差异明显。四组在缓解静息疼痛方面差别无统计学意义。且均未观察到严重的或文献未曾报道的不良事件。结论:双醋瑞因、氨基葡萄糖和消炎镇痛药(乐松)、玻璃酸钠治疗膝关节骨性关节炎在缓解患者关节疼痛方面均取得了满意效果,同时双醋瑞因(安必丁)对于缓解膝关节行走时疼痛取得更为突出的效果。 相似文献
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雌激素对去卵巢大鼠骨组织中骨保护素、破骨细胞分化因子和巨噬细胞集落刺激因子mRNA表达的影响 总被引:5,自引:0,他引:5
目的观察雌激素对去卵巢大鼠骨组织中骨保护素(OPG)、破骨细胞分化因子(ODF)和巨噬细胞集落刺激因子 (M-CSF)mRNA表达的影响,探讨雌激素预防和治疗绝经后骨质疏松(PMO)的可能细胞因子途径。方法健康3月龄雌性SD大鼠30只,随机等分为假手术组,去卵巢组和雌激素组(已烯雌酚片,0.0225 mg·kg-1·d-1,灌胃)。假手术组仅牵动卵巢,其余两组均行卵巢切除术。12周后取第3-6腰椎做骨密度检查。取股骨提总RNA。实时定量PCR法检测上述因子mRNA的表达情况。结果 (1)相对于去卵巢组,雌激素组大鼠腰椎骨密度增高,差异有统计学意义。(2)相对于去卵巢组,雌激素组大鼠骨组织OPG的mRNA表达增高,M-CSF的mRNA表达下降,ODF/OPG值下降。结论雌激素治疗绝经后骨质疏松的效应可能与其调控OPG,M-CSF的表达和ODF/OPG值有关。 相似文献
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Objective: To explore the prevalence rate of knee joint osteoarthritis and its pathogenetic features among the middle-aged and old aged people in the urban and rural area of Xi'an. Methods: From May to October 2005, 1 538 Han nationality above 40 years in Xi'an were investigated according to stratified and cluster random sampling. The same questionnaire was delivered to subjects who had been given normotopia and lateral position radiographic examination in both knees. Excluded from etiological arthritis, some subjects with clinical symptoms and a radiographic grade (beyond Kellgren & Lawrence grade Ⅱ ) were finally diagnosed as spontaneous knee joint osteoarthritis. All analyses were performed with SPSS 13.0 and t test, U test. Single factor analysis and multiple logistic regression analysis were used to analyze dates. Results: The total prevalence of spontaneous knee joint osteoarthritis was 12. 1% with 2.5% and 2.1% for right and left knees, respectively. The prevalence of knee joint osteoarthritis in women was 2.5 times of that in men (17.2% vs 6.8%, P=0. 000). the osteophyte prevalence in women was 2.3 times of that in men (26.5% vs 11. 4%, P=0. 000). The prevalence of knee joint osteoarthritis and osteophyte increased with the growth of age. So did the symptomatic knee, except for the age group of 56- 60 years and 66-70 years. The prevalence of symptomatic knee joint for urban area was significantly higher than that for rural area (56. 3% vs 45. 3%, P=0. 003). In women, the prevalence of knee joint osteoarthritis increased significantly with the increasing of body mass index, which had not been observed in men. Female and obesity are the risk factors for osteoarthritis, but bean and its products and meat could prevent the osteoarthritis. Conclusion: Old age, female and obesity serve as risk factors for knee joint osteoarthritis. 相似文献
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