犬复孔绦虫感染及形态鉴别

复孔绦虫（Ｄｉｐｙｌｉｄｉｕｍ）属于囊宫科（Ｄｉｌｅｐｉｄｉｄａｅ）,为中小型绦虫。与人体有关的虫种主要是寄生于狗、猫体内的犬复孔绦虫（Ｄｉｐｙｌｉｄｉｕｍｃａｎｉｎｕｍ）。当人们与这些动物接触时,被寄生在其体表或周围环境中的蚤类污染手及食物,通过口而受染。由于人体感染后多无临床表现,或只有腹部不适、肛门瘙痒等轻微症状,不易引起重视。偶有患者发现粪便中或从肛门中逸出的节片,感到恐惧而求诊。笔者曾在坝上送检的一小儿粪便中,发现８ｍｍ～１０ｍｍ×２ｍｍ～３ｍｍ的乳白色节片数节,据诉小儿经常肛门瘙痒以…     

鼻腔恶性淋巴瘤误诊原因分析

鼻腔恶性淋巴瘤 (鼻腔恶性肉芽肿 )是指始于鼻部 ,渐延及面部中线进行性坏死性溃疡为特征的一种肉芽肿。本病病情险恶 ,病因未明。近年来通过临床资料观察发病率有逐年增高的趋势 ,且病理检查缺乏特异性 ,早期症状又多不一 ,缺乏特征 ,常易造成误诊和漏诊。现将我院 1991～ 2 0 0 1年收治和转入诊治的误诊病例报告如下 ,并对误诊原因进行分析 ,以提高对本病的重视。1　临床资料共收治 18例 ,误诊 6例 ,误诊率 3 3 3 %。误诊病例中年龄最小者 15岁 ,最大者 48岁 ,均为男性 ,其中误诊为鼻息肉者 2例 ,慢性鼻窦炎 2例 ,鼻咽癌 1例 ,右鼻腔乳头…     

过敏性紫癜和紫癜性肾炎121例临床分析

过敏性紫癜(HSP)是一种全身性毛细血管炎性病变,为小儿常见病,肾损害为其基本症状之一。为了更好地了解HSP和紫癜性肾炎(HSPN)的发病因素和临床特点,减少发病和指导治疗,对我院2001年9月～2002年8月住院的HSP患儿121例及其中的HSPN患儿53例进行临床分析,现报告如下。     

NADPH oxidase-derived reactive oxygen species involved in angiotensin Ⅱ-induced monocyte chemoattractant protein-1 expression in mesangial cells

Objective To investigate the origin of oxidative stress induced by angiotensin H (Ang Ⅱ ) in human mesangial cells and the role of reactive oxygen species ( ROS) in Ang Ⅱ -induced monocyte chemoattractant protein-1 (MCP-1) expression.Methods MCP-1 expression was determined by real time RT-PCR.ROS production was measured by DCFDA fluorescence.Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity was examined by lucigenin chemiluminescence.p47phox and p67phox translocation was assayed by Western blot.Twenty-four male mice were randomly divided into three groups; the control,the Ang Ⅱ infusion [ Ang Ⅱ 400 ng/(kg±min) ],and the apocynin treatment.Ang Ⅱ was infused by subcutaneously osmotic minipump for 14 days.Urinary albumin and 8-isoprostane excretion were measured by ELISA.Results In cultured human mesangial cells,Ang Ⅱ induced the MCP-1 expression in a dose-dependent manner with 3.56 fold increase as compared with the control.Ang Ⅱ increased intracellular ROS production as early as 3 min with the peak at 60 min and was in a time and dose-dependent.Incubation with different dosages of Ang Ⅱ ( 1μmol/L,10μmol/L,and 100μmol/L Ang Ⅱ ) for 60 min,ROS production increased at 1.82,2.92,and 4.08 folds respectively.Ang Ⅱ-induced ROS generation was sensitive to diphenyleneiodonium sulfate (DPI,10 μmol/L) and apocynin (500μmol/L) ,two structurally distinct NADPH oxidase inhibitors.In contrast,inhibitors of other oxidant- producing enzymes,including the mitochondrial complex I inhibitor rotenone,the xanthine oxidase inhibitor allopurinol,the cyclooxygenase inhibitor indomethacin,the lipoxygenase inhibitor nordihydroguiaretic acid,the cytochrome P450 oxygenase inhibitor ketoconazole and the nitric oxide synthase inhibitor G-nitro-L- arginine methyl ester were without an effect Ang Ⅱ -induced ROS generation was inhibited by the ATI antagonist losartan (10μmol/L) but not the AT2 antagonist PD123319 (10μmol/L).Ang Ⅱ treatment induced translocation of cytosolic of p47 and p67 to the membrane.The antioxidants almost abolished Ang Ⅱ -induced MCP-1 expression.Ang Ⅱ infusion increased urinary and p67 translocation by 2.69-,2.97-,and 2.67-fold,respectively.Conclusions NADPH oxidase-derived ROS is involved in Ang Ⅱ-induced MCP-1 expression.Inhibition of NADPH oxidase alleviates Ang Ⅱ -induced renal injury.     

多西紫杉醇联合卡培他滨与联合顺铂治疗蒽环类耐药晚期乳腺癌对比分析

目的：观察多西紫杉醇（TXT）联合卡培他滨（CAP）方案与联合顺铂（DDP）方案治疗蒽环类耐药晚期乳腺癌的近期疗效和不良反应。方法：89例患者随机分组,接受TXT＋CAP（TC）或TXT＋DDP（TP）方案化疗2个周期以上,评价疗效及不良反应。结果：TC和TP两组近期疗效比较无统计学差异。TP较TC不良反应明显,组间有统计学差异。结论：TC和TP均是治疗蒽环类耐药晚期乳腺癌的有效方案,TC更适合于体质状态稍差的老年患者。     

NADPH oxidase-derived reactive oxygen species involved in angiotensin Ⅱ-induced monocyte chemoattractant protein-1 expression in mesangial cells

Objective To investigate the origin of oxidative stress induced by angiotensin H (Ang Ⅱ ) in human mesangial cells and the role of reactive oxygen species ( ROS) in Ang Ⅱ -induced monocyte chemoattractant protein-1 (MCP-1) expression.Methods MCP-1 expression was determined by real time RT-PCR.ROS production was measured by DCFDA fluorescence.Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity was examined by lucigenin chemiluminescence.p47phox and p67phox translocation was assayed by Western blot.Twenty-four male mice were randomly divided into three groups; the control,the Ang Ⅱ infusion [ Ang Ⅱ 400 ng/(kg±min) ],and the apocynin treatment.Ang Ⅱ was infused by subcutaneously osmotic minipump for 14 days.Urinary albumin and 8-isoprostane excretion were measured by ELISA.Results In cultured human mesangial cells,Ang Ⅱ induced the MCP-1 expression in a dose-dependent manner with 3.56 fold increase as compared with the control.Ang Ⅱ increased intracellular ROS production as early as 3 min with the peak at 60 min and was in a time and dose-dependent.Incubation with different dosages of Ang Ⅱ ( 1μmol/L,10μmol/L,and 100μmol/L Ang Ⅱ ) for 60 min,ROS production increased at 1.82,2.92,and 4.08 folds respectively.Ang Ⅱ-induced ROS generation was sensitive to diphenyleneiodonium sulfate (DPI,10 μmol/L) and apocynin (500μmol/L) ,two structurally distinct NADPH oxidase inhibitors.In contrast,inhibitors of other oxidant- producing enzymes,including the mitochondrial complex I inhibitor rotenone,the xanthine oxidase inhibitor allopurinol,the cyclooxygenase inhibitor indomethacin,the lipoxygenase inhibitor nordihydroguiaretic acid,the cytochrome P450 oxygenase inhibitor ketoconazole and the nitric oxide synthase inhibitor G-nitro-L- arginine methyl ester were without an effect Ang Ⅱ -induced ROS generation was inhibited by the ATI antagonist losartan (10μmol/L) but not the AT2 antagonist PD123319 (10μmol/L).Ang Ⅱ treatment induced translocation of cytosolic of p47 and p67 to the membrane.The antioxidants almost abolished Ang Ⅱ -induced MCP-1 expression.Ang Ⅱ infusion increased urinary and p67 translocation by 2.69-,2.97-,and 2.67-fold,respectively.Conclusions NADPH oxidase-derived ROS is involved in Ang Ⅱ-induced MCP-1 expression.Inhibition of NADPH oxidase alleviates Ang Ⅱ -induced renal injury.     

卡氏肺孢子虫在实验感染大鼠肺组织内的分布

观察了卡氏肺孢子虫包囊在实验感染大鼠不同5个肺叶的分布。在大鼠右肺副叶,左肺叶,右肺前叶,右肺中叶包囊数较多,右肺后叶包囊数最少,右肺后叶包囊数与其他4个肺叶相比,差异均具显著性。提示采用病原学方法检查大鼠肺组织时,从右肺副叶,左肺叶,右肺前叶,右肺中叶取材检出包囊的阳性率较高。     

黏膜黑色素瘤原发部位与转移部位相关性分析

目的:探讨黏膜黑色素瘤的原发部位与转移部位的相关性及基因组学特征.方法:对经病理确诊为黏膜黑色素瘤的92例患者进行流行病学调查,对肿瘤原发部位及转移部位的相关因素进行总结分析.结果:头颈部为黏膜黑色素瘤高发部位46人(50％),其次为泌尿生殖系统25人(27.17％),肛管直肠21人(22.83％).最常见转移部位均为...     

NADPH oxidase-derived reactive oxygen species involved in angiotensin Ⅱ-induced monocyte chemoattractant protein-1 expression in mesangial cells

Objective To investigate the origin of oxidative stress induced by angiotensin H (Ang Ⅱ ) in human mesangial cells and the role of reactive oxygen species ( ROS) in Ang Ⅱ -induced monocyte chemoattractant protein-1 (MCP-1) expression.Methods MCP-1 expression was determined by real time RT-PCR.ROS production was measured by DCFDA fluorescence.Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity was examined by lucigenin chemiluminescence.p47phox and p67phox translocation was assayed by Western blot.Twenty-four male mice were randomly divided into three groups; the control,the Ang Ⅱ infusion [ Ang Ⅱ 400 ng/(kg±min) ],and the apocynin treatment.Ang Ⅱ was infused by subcutaneously osmotic minipump for 14 days.Urinary albumin and 8-isoprostane excretion were measured by ELISA.Results In cultured human mesangial cells,Ang Ⅱ induced the MCP-1 expression in a dose-dependent manner with 3.56 fold increase as compared with the control.Ang Ⅱ increased intracellular ROS production as early as 3 min with the peak at 60 min and was in a time and dose-dependent.Incubation with different dosages of Ang Ⅱ ( 1μmol/L,10μmol/L,and 100μmol/L Ang Ⅱ ) for 60 min,ROS production increased at 1.82,2.92,and 4.08 folds respectively.Ang Ⅱ-induced ROS generation was sensitive to diphenyleneiodonium sulfate (DPI,10 μmol/L) and apocynin (500μmol/L) ,two structurally distinct NADPH oxidase inhibitors.In contrast,inhibitors of other oxidant- producing enzymes,including the mitochondrial complex I inhibitor rotenone,the xanthine oxidase inhibitor allopurinol,the cyclooxygenase inhibitor indomethacin,the lipoxygenase inhibitor nordihydroguiaretic acid,the cytochrome P450 oxygenase inhibitor ketoconazole and the nitric oxide synthase inhibitor G-nitro-L- arginine methyl ester were without an effect Ang Ⅱ -induced ROS generation was inhibited by the ATI antagonist losartan (10μmol/L) but not the AT2 antagonist PD123319 (10μmol/L).Ang Ⅱ treatment induced translocation of cytosolic of p47 and p67 to the membrane.The antioxidants almost abolished Ang Ⅱ -induced MCP-1 expression.Ang Ⅱ infusion increased urinary and p67 translocation by 2.69-,2.97-,and 2.67-fold,respectively.Conclusions NADPH oxidase-derived ROS is involved in Ang Ⅱ-induced MCP-1 expression.Inhibition of NADPH oxidase alleviates Ang Ⅱ -induced renal injury.     

感染旋毛虫小鼠毛中微量元素含量测定

【提要】 本文探讨感染旋毛虫小鼠毛中锌(Zn)、 铜(Cu)、铁(Fe)等3种微量元素含量的变化。实验分为3组, 重度感染组80只小鼠，每鼠灌胃400只旋毛虫肌幼虫; 轻度感染组60只, 每鼠灌胃200只旋毛虫肌幼虫; 正常对照组60只小鼠。于感染后第1、3、5、7、9、11、13及15周处死取其背部毛，检测Zn、Cu、Fe的含量。 结果，实验组 Zn、Cu、Fe 等3种微量元素含量均明显降低(P<0.05)，其中Zn、Cu变化较为明显。重度感染组显著低于轻度感染组(P<0.05)。