miR-27a下调表达对大鼠心肌缺血再灌注后急性肺损伤的保护作用及机制研究

［摘要］　目的　探讨miR-27a下调表达对大鼠心肌缺血再灌注(MI/R)后急性肺损伤(ALI)的保护作用及其机制。方法　选择8～12周龄成年雄性SD大鼠40只,将其随机分为假手术组(SP组)、模型组(I/R组)、miR-27a抑制剂组(anta-27a+I/R组)和miR-27a抑制剂空白对照组(NC+I/R组),每组10只。结扎冠脉左前降支30 min,再灌注120 min,构建大鼠MI/R所致ALI模型。anta-27a+I/R组与NC+I/R组在建模前连续3 d分别予尾静脉注射antagomir-27a、antagomir-NC。比较四组大鼠肺脏湿干重比(W/D)及病理改变情况。比较四组肺组织中丙二醛(MDA)、超氧化物歧化酶(SOD)的表达水平。比较四组肺组织及血清中白介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)的表达水平。结果　与SP组比较,I/R组、anta-27a+I/R组、NC+I/R组大鼠肺组织病理损伤严重,肺W/D值升高;肺组织MDA水平上升,SOD水平降低;肺组织及血清中IL-6、TNF-α水平上升,差异有统计学意义(P<0.05)。与I/R组比较,anta-27a+I/R组大鼠肺组织病理损伤程度有所减轻,肺W/D值下降;肺组织MDA水平下降,SOD水平上升;肺组织及血清中IL-6和TNF-α水平下降,差异有统计学意义(P<0.05)。结论　下调miR-27a表达可以通过减轻炎症反应与氧化应激缓解大鼠MI/R后所引起的ALI。     

离休干部抑郁症及相关因素分析

目的分析离休干部抑郁症患病率及相关因素,为离休干部抑郁症的防治提供依据。方法选择968例离休患者,以汉密尔顿抑郁量表(Hamilton Depression Scale,HAMD)作为评价抑郁症指标,HAMD评分大于20分认为存在抑郁症。对所有入选病例进行HAMD评分,并调查抑郁相关因素。结果968例离休患者中,抑郁症患者49例,患病率5.06%。11.11%小学文化程度患者、6.49%中学文化程度患者、3.74%大学文化程度患者患有抑郁症(P0.05);4.31%认知功能正常患者、10.91%认知功能障碍患者患有抑郁症(P0.01);7.01%脑卒中患者、2.99%非脑卒中患者患有抑郁症(P0.01);18.18%脑卒中后遗症患者,3.57%无脑卒中后遗症患者患有抑郁症(P0.01);14.29%肿瘤患者,3.94%非肿瘤患者患有抑郁症(P0.01);0～1种躯体疾病患者2.37%患有抑郁症,2～4种躯体疾病患者5.22%患有抑郁症,5～6种躯体疾病患者11.54%患有抑郁症(P0.05);多因素Logistic回归分析显示教育程度、认知功能、脑卒中后遗症、肿瘤、躯体疾病种类与抑郁症相关。结论在离休干部中,抑郁症的发生与教育程度、认知功能、脑卒中后遗症、肿瘤、躯体疾病种类相关,应采取积极的干预措施,减轻抑郁情绪对身心的不良影响。     

腹腔镜辅助下胃癌根治术疗效分析

目的探讨腹腔镜对进展期胃癌手术治疗的安全性、可行性及疗效。方法回顾性分析大连医科大学附属二院普外科2011年5月-2014年1月120例进展期胃癌患者的临床资料,其中59例患者行腹腔镜辅助下胃癌根治术治疗,61例患者行传统开腹胃癌根治术。结果腹腔镜组均成功完成胃癌根治术,无中转开腹。与开腹组相比,术中出血量更少,术后胃肠道功能恢复更快。结论腹腔镜辅助下胃癌根治术安全、可行,与开腹组治疗效果相同,且腹腔镜组因创伤小术后恢复快,值得推广。     

古丈县阻断班氏丝虫病传播的研究

古丈县系班氏丝虫病中度流行区。1975年普查全县13个乡158个村,156个村流行丝虫病,血检74533人,平均微丝蚴率6.15％,个别自然村高达25％以上。抽样调查晚期丝虫病患病率1.05％,经反复查治和全民普服海群生药盐,1980年微丝蚴率降到0.21％以下,达到部颁基本消灭丝虫病标准,1982年起即转到后期防治研究和监测。 1 材料与方法 1.1 按照省、州基本消灭丝虫病后期监测技术方案,根据本县丝虫病流行特征制定防治措施。     

冠心病病人健康教育两种方法的对比性研究

心血管疾病是危害人类健康的头号杀手 ,其中因冠心病而死亡的占其死亡总数的 5 0 %左右。目前 ,冠心病的发病率在 4 0岁以上的人群中占 4 %～ 7% ,且呈不断上升趋势 ,这引起了世界卫生组织 (WHO)和各国的广泛关注[1 ] 。有资料表明 ,许多冠心病患者并不是死于疾病本身 ,而是死于对自己健康的无知和不健康的生活方式。笔者从 2 0 0 1年开始关注冠心病患者认知教育问题 ,研究表明 ,系统地对住院冠心病病人健康教育显得尤为重要。1　对象与方法1.1　研究对象。 2 0 0 1年 9月～ 2 0 0 3年 2月 ,我科入院的老年冠心病患者 6 6例。患者平均年龄…     

肠系膜占位性病变实时超声定位诊断价值

目的 探讨实时超声显像对肠系膜占位性病变定位诊断的价值.方法 分析19例肠系膜占位性病变的实时超声表现,观察实时超声检查过程中改变体位时病变的移动性.所有病例均与CT检查结果对照,并经手术和病理证实.结果 19例肠系膜占位性病变中,16例肿块可在脊柱两侧移动,超声定位诊断符合率84.21%,CT定位诊断符合率42.10%.结论 实时超声检查可动态观察肿块的移动性,对肠系膜占位性病变的定位诊断有较大参考价值.     

同型半胱氨酸对老年冠心病和非冠心病患者血脂及过氧化代谢影响的比较

目前的研究已经证实,同型半胱氨酸(HCY)是冠心病(CAD)的独立危险因素[1-2],但其致病机制尚不明确.HCY氧化产生的H2O2可引起内皮细胞(EC)损伤[3-4].从而促进CAD的形成.因此,我们选择高同型半胱氨酸血症老年CAD患者为研究对象,观察其血脂、超氧化物歧化酶(SOD)及丙二醛(MDA)的变化,探讨HCY对EC脂质过氧化的影响,研究其对CAD形成的作用机制.     

超声造影微血管成像与常规超声靶向引导前列腺癌穿刺活检的比较研究

ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.     

超声造影微血管成像与常规超声靶向引导前列腺癌穿刺活检的比较研究

ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.     

超声造影微血管成像与常规超声靶向引导前列腺癌穿刺活检的比较研究

ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.