胃癌组织标本中lncRNA RN7SK的表达及其筛查价值

目的检测胃癌组织中长链非编码RNA(lnc RNA)RN7SK表达水平,并探讨其在临床筛查中的价值。方法 q RT-PCR检测lnc RNA RN7SK在胃癌细胞、胃癌组织中的表达水平;绘制ROC曲线,分析其用于筛查胃癌的效能。结果 lnc RNA RN7SK在人胃癌细胞系SGC-7901(3.91±0.53)、MGC-803(3.44±0.29)、HGC-27(4.04±0.87)和BGC-823(4.30±1.13)中的表达水平明显高于人胃粘膜上皮细胞系GES-1(1.02±0.27),差异具有统计学意义(t分别为12.33、7.48、7.20、4.90,P0.05)。lnc RNA RN7SK在55例胃癌组织中有47例(85.5%)表达上调,8例(14.5%)表达下降。lnc RNA RN7SK筛查胃癌患者的ROC曲线下面积(AUCROC)为0.827,95%可信区间(CI)为0.746~0.907,当cut-off值为0.618时,敏感性为0.836,特异性为0.782。结论 lnc RNA RN7SK在胃癌组织中高表达,且具有较高的筛查效能,可作为潜在的胃癌诊断分子标志物。     

在按蚊传播疟疾过程中疟原虫运动的成像[英]／Frischknecht F，Baldacci P，Martin B．eta1／／Cell Microbiol

为了了解子孢子在蚊虫唾腺中如何运动，法国巴斯德研究所的研究人员利用鼠疟原虫子孢子可由期特异性的CS启动子启动表达绿色荧光蛋白(GFP)的原理，运用滞时荧光显微镜，跟踪拍摄了标记GFP的子孢子在斯氏按蚊活体内和分离唾腺中的运动过程。     

The effects of gossypol on expressions of transforming growth factor-β1, fibronectin and 11β-hydroxysteroid dehydrogenase in nephridial tissue in rats with diabetes mellitus

Objective To observe the effects of gossypol on expressions of transforming growth factor-β1 (TGF-β1), fibronectin (FN) and 11β-hydroxysteroid dehydrogenase (11β-HSD) in nephridial tissue in rats with diabetes mellitus. Methods Thirty male Sprague-Dawley rats were randomly divided into three groups: normal control, type 2 diabetes and gossypol treatment group . After high-fat feeding for 4 weeks, the later two groups were injected with low dosage strepozotocin (30 mg/kg) intraperitoneally to induce type 2 diabetic rat model. The rats in gossypol treated group were given gossypol at the dosage of 15 mg/kg once per day for 4 weeks by gavage. And since the 5th week, the times of gavages had been changed into once per week at the same dosage and lasted to the 12th week . The levels of blood glucose, total cholesterol (TC), low density lipoprotein-cholesterol (LDL-c) were measured. Additionally, the morphological changes of the kidney were studied by light microscopy and transmission electron microscopy respectively. The mRNA expressions of TGF-β1, FN, 11β-HSD and 11β-HSD2 in nephridial tissue were assayed by semi-quantity RT-PCR. The protein expressions of TGF-β1 and FN in nephridial tissue were determined by immunohistochemistry. Results The blood levels of glucose, TC and LDL- c were increased significantly in type 2 diabetic group compared with normal control group(P<0. 01). The volume of glomerulus and the deposition of PAS positive substance in the glomerular interstitium were increased under light microscopy, and the glomerular basal membrane was thicker in type 2 diabetic group than those in normal control group under transmission electron microscopy. The mRNA and protein expressions of TGF-β1 and FN were increased(P<0. 01), and the mRNA expression of 11β-HSD2 was decreased(P<0. 05), while the mRNA expression of 11β-HSD1 was unchanged in type 2 diabetic group compared with normal control group. After the treatment of gossypol, the level of the blood glucose was significantly decreased(P< 0. 01), and the levels of TC, LDL-c showed a trend of decrease but had no statistical differences compared with type 2 diabetic group. The morphology of nephridial tissue was ameliorated in gossypol treatment group. The mRNA and protein expressions of TGF-β1 and FN were decreased(0. 16± 0. 02,0. 22±0. 05 ; 0. 24±0. 06,0. 33±0. 07, P< 0. 05), while the mRNA expressions of 11β-HSD1 and 11β-HSD2 were unchanged compared with type 2 diabetic group. Conclusions Gossypol can relieve the pathologic changes of nephridial tissue, inhibit the expressions of TGF-β1 and FN through decreasing blood glucose of rats with diabetes mellitus.     

氟比洛芬酯和帕瑞昔布钠对切口痛大鼠行为学及脊髓环氧化酶-2蛋白表达的影响

<正>疼痛会引发不良情绪及较严重的应激反应,采用镇痛药物进行干预是临床常用选择。本研究通过对切口痛大鼠在术后经尾静脉注射氟比洛芬酯和帕瑞昔布钠,比较两者的镇痛效果,为临床应用提供借鉴。1材料与方法1.1材料1.1.1试剂:帕瑞昔布钠(40 mg,辉瑞制药有限公司);氟比洛芬酯(50 mg,北京泰德制药有限公司);大鼠环氧化酶-2     

The effects of gossypol on expressions of transforming growth factor-β1, fibronectin and 11β-hydroxysteroid dehydrogenase in nephridial tissue in rats with diabetes mellitus

Objective To observe the effects of gossypol on expressions of transforming growth factor-β1 (TGF-β1), fibronectin (FN) and 11β-hydroxysteroid dehydrogenase (11β-HSD) in nephridial tissue in rats with diabetes mellitus. Methods Thirty male Sprague-Dawley rats were randomly divided into three groups: normal control, type 2 diabetes and gossypol treatment group . After high-fat feeding for 4 weeks, the later two groups were injected with low dosage strepozotocin (30 mg/kg) intraperitoneally to induce type 2 diabetic rat model. The rats in gossypol treated group were given gossypol at the dosage of 15 mg/kg once per day for 4 weeks by gavage. And since the 5th week, the times of gavages had been changed into once per week at the same dosage and lasted to the 12th week . The levels of blood glucose, total cholesterol (TC), low density lipoprotein-cholesterol (LDL-c) were measured. Additionally, the morphological changes of the kidney were studied by light microscopy and transmission electron microscopy respectively. The mRNA expressions of TGF-β1, FN, 11β-HSD and 11β-HSD2 in nephridial tissue were assayed by semi-quantity RT-PCR. The protein expressions of TGF-β1 and FN in nephridial tissue were determined by immunohistochemistry. Results The blood levels of glucose, TC and LDL- c were increased significantly in type 2 diabetic group compared with normal control group(P<0. 01). The volume of glomerulus and the deposition of PAS positive substance in the glomerular interstitium were increased under light microscopy, and the glomerular basal membrane was thicker in type 2 diabetic group than those in normal control group under transmission electron microscopy. The mRNA and protein expressions of TGF-β1 and FN were increased(P<0. 01), and the mRNA expression of 11β-HSD2 was decreased(P<0. 05), while the mRNA expression of 11β-HSD1 was unchanged in type 2 diabetic group compared with normal control group. After the treatment of gossypol, the level of the blood glucose was significantly decreased(P< 0. 01), and the levels of TC, LDL-c showed a trend of decrease but had no statistical differences compared with type 2 diabetic group. The morphology of nephridial tissue was ameliorated in gossypol treatment group. The mRNA and protein expressions of TGF-β1 and FN were decreased(0. 16± 0. 02,0. 22±0. 05 ; 0. 24±0. 06,0. 33±0. 07, P< 0. 05), while the mRNA expressions of 11β-HSD1 and 11β-HSD2 were unchanged compared with type 2 diabetic group. Conclusions Gossypol can relieve the pathologic changes of nephridial tissue, inhibit the expressions of TGF-β1 and FN through decreasing blood glucose of rats with diabetes mellitus.     

血吸虫病中度流行区化疗对象筛查方案的研究

目的 探讨血吸虫病中度流行区简便，有效，经济，适用的化疗对象筛查方案。方法 分别以粪检，询检，间接血凝法（IHA）及胶体染料试纸条法（CDSIA，目前改称DDIA）对居民进行血吸虫病筛查，并对各方法进行分析和评价。结果 经比较分析，IHA法在一些指标上优于其他方法，但每检出1例病人的费用了高于其他方法。结合流行病学资料，本研究提出3种[A,B,C(包括a,b,两种情况）]综合筛查方案，敏感性分别为88．46％，80．77％，82．05％和92．31％；每检出1例感染者所需费用分别为8．53元，6．59元，8．78元和5．97元。结论 IHA经检验是一种简便，有效，在感染率为5％－10％的中度流行区较可取的筛查方法，但所需费用仍较高；DSIA较IHA更为简便，快速，廉价，且敏感性高，各方法综合应用可提高检出率，降低成本。综合筛查方案（Cb)具有减少工作量，降低漏检率，简便，经济，利于现场应用等特点。     

小檗碱激活SIRT1/AMPK信号通路改善高糖诱导的系膜细胞异常增殖和自噬功能

目的 研究小檗碱(BBR)对高糖(HG)环境下的系膜细胞增殖和自噬水平的影响及具体的分子机制。方法 将指数生长期的系膜细胞分成以下几组：正常组、高糖组、高糖+小檗碱治疗组(30、60、90μmol/L)、高糖+小檗碱(90μmol/L)+腺苷酸活化蛋白激酶(AMPK)抑制剂组(CC组);高内涵细胞成像仪计算系膜细胞的数量;免疫荧光法检测Ⅳ型胶原蛋白(Col-IV)、纤连蛋白(FN)、微管相关蛋白1轻链3 B(LC3B)在系膜细胞中表达情况;Western blot法检测细胞上LC3B、Beclin-1、p62、Col-IV、FN和沉默信息调节因子1(SIRT1)/腺苷酸活化蛋白激酶(AMPK)信号通路蛋白表达水平。结果 与正常组比较,高内涵细胞成像仪结果显示高糖组系膜细胞异常增殖;免疫荧光法和Western blot法结果显示高糖组系膜细胞外基质沉积蛋白Col-IV、FN的表达水平升高;Western blot法结果显示高糖组系膜细胞中SIRT1、p-AMPK、LC3B、Beclin-1蛋白表达降低,p-p65、p62蛋白表达升高。与高糖组比较,BBR对高糖诱导的系膜细胞异常增殖能力具...     

皮肌炎26例临床分析

26例皮肌炎中,男8例,女18例,男女之比1∶2.25.年龄4～66岁.典型的皮损为眼睑浮肿性紫红色斑,占80.77%,四肢近端肌群受累者占84.61%.可有发热,心、肺、肝、肾、消化道、关节等受累.54%～60%病人血清肌酶和62%病人24h尿肌酸排出增高.85.71%病人肌电图异常.并发细菌肺炎者4例,糖尿病者3例,上消化道出血者2例.本组好转率为76.92%,死亡率为7.7%.对该病的临床表现及治疗进行了讨论.