雷帕霉素对炎性反应状态下肾小球系膜细胞内脂质稳态的影响

Objective To investigate the effect of rapamycin on cholesterol homeostasis of glomerular mesangial cells and the underlying mechanism. Methods Glomerular mesangial cell line (HMCL) cells were cultured and divided into control group, IL-1β group and different concentration rapamycin groups. Intracellular cholesterol accumulation was observed and measured by oil O staining and HPLC. Real-time quantitative PCR and Western blot were used to detect the mRNA and protein expression of LDLR, PPARγ, LXRα, ABCA1 in HMCL after the treatment with IL-1β and rapamycin. Results Rapamycin had no significant influence on intracellular cholesterol concentration under normal condition. IL-1β significantly increased the intracellular cholesterol concentration by 143％ of control (P<0.05), and 10, 50, 100 ?滋g/L rapamycin could significantly inhibit the effect of IL-1β (87％, 116％, 96％ of control respectively, all P<0.05). Rapamycin could suppress the increased expression of LDLR caused by IL-1β on both mRNA and protein level in a dose-dependent manner（P<0.01）. Rapamycin dose-dependently up-regulated the reduced mRNA and protein expression of ABCA1, the decreased mRNA expression of PPARγ and LXRα induced by IL-1β as well (P<0.01）. Conclusion Rapamycin may contribute to the maintenance of intracellular cholesterol homeostasis in glomerular mesangial cells under inflammatory state by both reducing cholesterol uptake and promoting cholesterol efflux.     

逆行静脉腔内射频闭合并点状抽剥治疗下肢静脉曲张

目的探讨逆行静脉腔内射频闭合并点状抽剥法治疗下肢静脉曲张的效果。方法本组在2005年3月-2007年5月对25例原发性大隐静脉曲张患者,共38条患肢的曲张大隐静脉采用数控射频静脉闭合系统逆行闭合大隐静脉主干并同时用点状抽剥法治疗小腿散在曲张浅静脉。结果随访1～24个月,所有患者大隐静脉主干均闭合良好,无复发,近期疗效满意。结论逆行静脉腔内射频闭合并点状抽剥法治疗下肢静脉曲张具有术式简便、创伤少、疗效可靠、康复快、住院时间短等优点。     

异甘草素和Flutamide联合应用对人前列腺癌细胞体外增殖的抑制作用

目的观察异甘草素(ISL)和Flutamide联合应用对人前列腺癌细胞体外增殖的抑制作用。方法采用MTT法测定细胞增殖,流式细胞仪检测细胞凋亡,逆转录聚合酶链反应(RT-PCR)分析Bcl-2表达。结果ISL和不同浓度Flutamide联合用药比单独应用Flutamide对前列腺癌PC-3细胞增殖抑制作用明显增强(P<0.01),同时显著下调Bcl-2基因表达,增加癌细胞凋亡。结论ISL和Flutamide联合应用对前列腺癌PC-3细胞增殖抑制作用明显增强,其机制可能与下调Bcl-2基因表达及增加癌细胞凋亡有关。     

1例妊娠并存肾上腺皮质功能减退症患者的护理

对1例妊娠38^＋3周并存肾上腺皮质功能减退症孕妇采取有效的术前、术后护理，同时做好病情观察、饮食指导、健康教育等各项护理措施，1周后母几痊愈出院。提示准确到位的护理可减少和避免妊娠并存肾上腺皮质功能减退症患者并发症的发生。     

一例典型的同心圆性硬化报告并文献复习

同心圆性硬化(Balo病)是一种罕见的中枢神经系统脱髓鞘疾病,我们最近收治一典型病例,现报告如下。患者,女,49岁,当地农民。因“头晕头痛半年,左侧肢体乏力1月余”于2005年11月10日入院。患者于半年前无明显诱因下开始出现头晕头痛,以劳累后为主,休息后可缓解,当     

Antibrain antibodies in children with autism and their unaffected siblings

Serum autoantibodies to human brain, identified by ELISA and Western immunoblotting, were evaluated in 29 children with autism spectrum disorder (22 with autistic disorder), 9 non-autistic siblings and 13 controls. More autistic subjects than controls had bands at 100 kDa in caudate, putamen and prefrontal cortex (p<0.01) as well as larger peak heights of bands at 73 kDa in the cerebellum and cingulate gyrus. Both autistic disorder subjects and their matched non-autistic siblings had denser bands (peak height and/or area under the curve) at 73 kDa in the cerebellum and cingulate gyrus than did controls (p<0.01). Results suggest that children with autistic disorder and their siblings exhibit differences compared to controls in autoimmune reactivity to specific epitopes located in distinct brain regions.     

手助腹腔镜治疗巨大嗜铬细胞瘤

目的 探讨手助腹腔镜治疗巨大肾上腺嗜铬细胞瘤的手术方法和效果.方法 回顾性分析自2006年7月至2009年3月,采用经腹腔入路手辅助腹腔镜肾上腺切除术治疗直径大于6 cm的嗜铬细胞瘤患者10例.观察手术时间、术中出血量、术后并发症及患者恢复情况.结果 10例手术均获成功,无中转开放,手术时间40 ～110分钟,平均80...     

Peroxisome proliferator-activated receptor-α is renoprotective in doxorubicin-induced glomerular injury

Doxorubicin (DOX) is an anthracycline antibiotic utilized in antitumor therapy; however, its clinical use is frequently impeded by renal toxic effects. As peroxisome proliferator-activated receptor-α (PPAR-α) has renoprotective effects in drug-related kidney injuries, we tested its ability to inhibit DOX-induced renal injury. Although both male PPAR-α knockout mice and their wild-type littermates (pure 129/SvJ background) had significant proteinuria 4 weeks after DOX treatment, those with deletion of PPAR-α had more severe proteinuria. This was associated with more serious podocyte foot process effacement compared with wild-type mice. In contrast, the PPAR-α agonist fenofibrate effectively reduced proteinuria and attenuated DOX-induced podocyte foot process effacement. Consistently, glomerular nephrin expression was significantly lower in the knockout compared with wild-type mice following DOX treatment. Fenofibrate therapy significantly blunted the reduction in glomerular nephrin levels in DOX-treated wild-type mice. In cultured podocytes, DOX induced apoptosis, increased cleaved caspase-3 levels, and decreased Bcl-2 expression, all attenuated by pretreatment with fenofibrate. Thus, PPAR-α deficiency exacerbates DOX-related renal injury, in part, due to increased podocyte apoptosis.     

CD146、血管内皮生长因子与前列腺癌血管生成关系的研究

目的探讨CD146、血管内皮生长因子(VEGF)在前列腺癌(PCa)中的表达及与肿瘤血管生成的关系。方法采用免疫组织化学法检测39例PCa和20例良性前列腺增生(BPH)组织中CD146、VEGF的表达情况,并检测CD34标记的肿瘤微血管密度(MVD)。结果 PCa组织中CD146的阳性表达率(82.05%)明显高于BPH组织(15.00%,P<0.05),其表达与PCa的病理分级无关(P>0.05),与临床分期有关(P<0.05)。PCa组织中VEGF的阳性表达率(74.36%)明显高于BPH组织(10.00%,P<0.05),其表达与PCa的病理分级和临床分期有关(P<0.05)。PCa中MVD(37.41±7.95)显著高于BPH(17.62±2.40,P<0.05),MVD与病理分级和临床分期显著相关(P<0.05)。PCa中CD146阳性组及VEGF阳性组MVD(39.73±6.68、40.79±6.03)均高于CD146阴性组及VEGF阴性组(26.83±3.24、27.62±3.24,均P<0.05),CD146与VEGF的表达呈正相关(r=0.643,P<0.05)。结论 CD146、VEGF在PCa中高表达并且与肿瘤血管生成密切相关。CD146、VEGF表达和微血管的形成在PCa的发生、浸润和转移中起重要作用。