中国H5N1禽流感时空分布特征研究

  目的  以中国31个省(自治区、直辖市)为研究区域,探究其2004—2019年H5N1亚型高致病禽流感发生次数时空分布特征。  方法  基于ArcGIS 10.5软件和SPSS 26.0软件,应用聚类分析和χ2检验研究H5N1疫病的时间分布特征和影响因素。应用空间自相关方法研究H5N1疫病的空间分布特征。  结果  通过时间聚类分析,得到在疫情流行阶段(2004—2005年)和平稳阶段(2006—2019年),H5N1疫情暴发次数在时间分布上都存在聚集性,其中1月、2月、6月和11月为疫病的高发期。通过全局空间自相关分析,发现疫情流行阶段H5N1空间分布呈聚集性,疫情平稳阶段呈现随机分布。通过局部自相关分析,表明流行阶段H5N1热点地区集中在中国中部地区,主要包括乌鲁木齐、咸宁、岳阳、安庆、九江等市,平稳阶段的热点地区主要集中在中国西北部。χ2检验显示疫病发生与候鸟迁徙具有相关关系。  结论  中国H5N1禽流感在流行阶段具有时空聚集性,在平稳阶段仅具有一定的时间聚集性。     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

内外合治法治疗小儿肺炎的疗效评价

目的:评价内外合治法治疗小儿肺炎的临床疗效.方法:对122例小儿肺炎(肺炎喘嗽风热闭肺证)患儿,采用基础治疗加中药小儿清肺饮、止咳散口服及敷胸散外敷,观察,临床症状及体征的改善情况.结果:内外合治法治疗小儿肺炎的总有效率和中医证候总有效率分别为96.72%和98.36%.结论:内外合治法治疗小儿肺炎(肺炎喘嗽风热闭肺证)疗效显著.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

针刺、中药并用治疗脑卒中33例临床报道

笔者自 1996年 3月～ 2 0 0 1年 3月 ,运用针刺、中药并用治疗“脑萃中” 33例 ,现报道如下。1　对象与方法1 1　对象全部病例均符合 1986年全国中、西医脑血管疾病诊断标准 ,并经过颅脑CT片报告证实 ,33例中男性 2 3例 ,女性 10例 ;年龄 :4 5～ 73岁 ,平均年龄5 9岁 ,超过 6 0岁者为 15例 ,占 4 9 5 % ,发病时间8～ 14 8h内。1 2　中医诊断分型中风 :中经络 2 3例 ;中脏腑 10例 ,其中阴闭 4例 ,阳闭 5例 ,脱证 1例。西医诊断 :缺血性脑血管病 2 3例 ,其中多发性、多部位 5例 ,区限性 8例 ,双基底节区 6例 ,腔隙性 4例。出血性脑血管病 10…     

心脏成纤维细胞结构与功能

心脏成纤维细胞（card iac fibrob lasts）以其细胞数量而言,在心脏中是一个庞大的细胞群体。它们形成了心肌层的结构、生物化学、机械-电等方面的特性。即便如此,它们却经常在心脏功能的研究中被人们所忽略。本综述扼要阐述了成纤维细胞起源及鉴定,结构和功能以及在生理和病理条件下的意义。     

自拟眩晕八味汤治眩晕一得

我们自1989年以来,用自拟眩晕八味汤治疗50例眩晕病患者,均获卓效,现介绍如下:一、方药组成党参15g,白术10g,山药15g,川芎15g,菊花20g,山萸肉12g,夏枯草12g,钩藤10g。二、临床运用眩晕伴恶心呕吐者加竹茹、代赭石、半夏、生姜;耳鸣重听者加郁金、九节菖蒲;痰浊内盛者加天麻和二陈汤;气血两亏者加黄芪、当归、阿胶;肾精不足     

姜黄素对人肺成纤维细胞凋亡及细胞周期的影响

目的研究姜黄素对人肺成纤维细胞(human lung fibroblasts,HLFs)体外生长、细胞周期及凋亡的影响。方法应用CCK-8、Annexin-V/PI、PI流式细胞分析术、免疫印迹法,检测姜黄素对细胞的增殖、凋亡、细胞周期和Bax蛋白表达的影响。结果姜黄素对HLFs的增殖有抑制作用,可促进HLFs的早期凋亡,对细胞周期可产生G2/M期阻滞,增加HLFs的Bax蛋白的表达。结论姜黄素可抑制HLFs的增殖并能诱导其凋亡,其机制可能与细胞的G2/M期阻滞及凋亡相关蛋白的表达增强有关。     

AcSDKP对TGF-β 1诱导的大鼠心脏成纤维细胞胶原蛋白合成及表达的调节作用

目的 探讨N-乙酰基-丝氨酰-天门冬酰-赖氨酰-脯氨酸(AcSDKP)对转化生长因子β1(TGF-β1)诱导的大鼠心脏成纤维细胞胶原合成的调节作用.方法 差速贴壁法获取大鼠心脏成纤维细胞;采用3H-脯氨酸掺入法检测心脏成纤维细胞胶原蛋白的合成.采用免疫细胞化学染色和Western blotting法检测心脏成纤维细胞Ⅰ型与Ⅲ型胶原蛋白的表达.结果 随着TGF-β1浓度的增加(1μg/L, 2.5μg/L,5μg/L,7.5μg/L),细胞脯氨酸含量(CPM值)逐渐增加(分别为147.6±10.2,229.2±16.4,427.0±40.6,454.8±26.1),分别是对照组(CPM值为91.6±9.8)的1.61倍、2.50倍、4.66倍、4.97倍,差异均有显著性(P<0.05).当加入不同浓度的AcSDKP(10-10mol/L,5×10-10mol/L, 10-9mol/L, 10-8mol/L)时,细胞脯氨酸含量逐渐下降(CPM值为378.8±6.4,292.8±14.4,130.6±17.6,230.6±19.4),分别是TGF-β1组(5μg/L)的88.7%,68.6%,30.6%,54.0%.差异均具有显著性(P<0.05).免疫细胞化学结果显示,TGF-β1组(5μg/L)细胞内Ⅰ型与Ⅲ型胶原蛋白平均吸度值分别是对照组的1.36倍和2.12倍,差异具有显著性(P<0.05); Western blotting法结果显示,TGF-β1组的Ⅰ型与Ⅲ型胶原蛋白表达条带吸光度值分别是对照组的1.09倍和1.29倍,差异具有显著性(P<0.05).当给予AcSDKP(10-9mol/L)进行干预时,免疫细胞化学结果显示,细胞内Ⅰ型与Ⅲ型胶原蛋白表达强度较TGF-β1组减弱,其平均吸光度值分别是TGF-β1组的61.3%和68.5%,差异具有显著性(P<0.05).Western blotting法结果显示,Ⅰ型与Ⅲ型胶原蛋白表达条带吸光度值分别是TGF-β1组的83%和54%,差异具有显著性(P<0.05).结论 AcSDKP对TGF-β1介导的心脏成纤维细胞胶原合成与Ⅰ、Ⅲ型胶原蛋白的表达有明显抑制作用,这可能与其抗心脏纤维化的作用相关.