NSE和S-100抗体免疫标记在先天性巨结肠病理诊断中的意义

先天性巨结肠(megacolon,又名Hirschsprung病)是常见消化道发育畸形,病理学改变为神经节细胞缺乏症,系直肠和下段结肠平滑肌神经丛缺乏神经节细胞,导致肠管痉挛正常蠕动消失形成功能性肠梗阻。先天性巨结肠的病理学诊断依靠全层肠标本活检,但常规HE切片光镜下难以识别神经节细胞,尤其是在新生儿;乙酰胆碱酯酶特殊染色可显示固有膜和黏膜肌层乙酰胆碱酯酶阳性纤维明显增加,但它作为辅助诊断应用存在争议,假阳性和假阴性反应曾有报告[1]。VinoresSA,MayE认为免疫组化标记神经元特异性烯醇化酶(NSE)非常有利于证实神经节细胞的存在[2]。本…     

Detection of factor Ⅷ intron 1 inversion in severe haemophilia A

Objective Screening the intron 1 inversion of factor Ⅷ (FⅧ) in the population of severe haemophilia A(HA) in China and performing carrier detection and prenatal diagnosis. Methods Using LD-PCR to detect intron 22 inversions and multiple-PCR within two tubes to intron 1 inversions in sereve HA patients. Carrier detection and prenatal diagnosis were performed in affected families. Linkage analysis and DNA sequencing were used to verify these tests. Results One hundred and eighteen patients were seven diagnosed as intron 22 inversions and 7 were intron 1 inversions out of 247 severe HA patients. The prevalence of the intron 1 inversion in Chinese severe haemophilia A patients was 2. 8% (7/247). Six women from family A and 2 from family B were diagnosed as carriers. One fetus from family A was affected fetus. Conclusion Intron 1 inversion could be detected directly by multiple-PCR within two tubes. This method made the strategy more perfective in carrier and prenatal diagnosis of haemophilia A.     

胃肠道间质瘤36例临床诊治体会

<正>目前胃肠道间质瘤(gastrointestinal stromal tumor,GIST)是一组独立起源于胃肠道间质干细胞的肿瘤,由未分化或多能的梭形或上皮样细胞组成,免疫表型表达c-Kit蛋白(CD117),遗传学上有c-Kit基因突变属于消化道间叶肿瘤[1]。GIST是消化道最常见的间叶源性肿瘤,其中60%⁷0%发生在胃,20%70%发生在胃,20%³0%发生在小肠。多发于中老年患者,男女发病率     

细胞学涂片的免疫组化染色

目的：探讨免疫组化染色技术在细胞学涂片上的应用。方法：选用有对比意义的二组病例．计有腺癌性胸腹水离心涂片37例，小细胞未分化癌痰涂片20例，采用免疫组化二代二步法进行实验染色。结果：腺癌性胸腹水离心涂片中的腺癌细胞对CEA抗体显阳性．间皮细胞对MC抗体显阳性；小细胞未分化癌痰涂片中小细胞未分化癌细胞对CHA抗体显阳性，淋巴细胞对LCA抗体现阳性。结论：免疫组化的抗原抗体反应是具有高度特异性和敏感性的生物化学反应，对特定抗原识别力强，在细胞、亚细胞水平检测抗原分子是其他生物技术难以达到和替代的．在细胞学上具有广阔的应用前景。     

急性胆囊炎腹腔镜治疗32例分析

目的：讨论急性胆囊炎腹腔镜胆囊切除术的手术方法。方法：综合分析32例胆囊急性炎症期患者施行腹腔镜胆囊切除术的手术时间、手术时机、术中注意要点等。结果：本组中31例顺利完成手术,平均手术时间为65min;1例中转开腹,全部患者均在7d内治愈出院。结论：充分掌握腹腔镜胆囊切除术的操作技巧及明确的解剖关系,胆囊急性炎症期患者施行腹腔镜胆囊切除术同样可以获得满意治疗效果。     

Detection of factor Ⅷ intron 1 inversion in severe haemophilia A

Objective Screening the intron 1 inversion of factor Ⅷ (FⅧ) in the population of severe haemophilia A(HA) in China and performing carrier detection and prenatal diagnosis. Methods Using LD-PCR to detect intron 22 inversions and multiple-PCR within two tubes to intron 1 inversions in sereve HA patients. Carrier detection and prenatal diagnosis were performed in affected families. Linkage analysis and DNA sequencing were used to verify these tests. Results One hundred and eighteen patients were seven diagnosed as intron 22 inversions and 7 were intron 1 inversions out of 247 severe HA patients. The prevalence of the intron 1 inversion in Chinese severe haemophilia A patients was 2. 8% (7/247). Six women from family A and 2 from family B were diagnosed as carriers. One fetus from family A was affected fetus. Conclusion Intron 1 inversion could be detected directly by multiple-PCR within two tubes. This method made the strategy more perfective in carrier and prenatal diagnosis of haemophilia A.     

重型血友病A凝血因子Ⅷ第1内含子倒位的基因检测

目的 在中国重型血友病A(haemophilia A,HA)患者中筛查凝血因子Ⅶ(factor Ⅷ,FⅧ)基因第1内含子倒位,并对受累患者家系成员行携带者检查和产前基因诊断.方法 对重型HA患者(F Ⅷ:C<1%)采用长距离PCR法首先筛查第22内含子倒位,对第22内含子倒位阴性的应用双管多重PCR法进行第1内含子倒位检测,对第1内含子倒位阳性患者的女性家属进行携带者检测,对女性携带者所孕胎儿进行产前检测.用基因连锁分析和DNA测序法加以验证.结果 从247例重型HA患者中共检测出118例第22内含子倒位和7例第1内含子倒位,第1内含子倒位突变在中国重型HA人群中的发病率约为2.8%;随访到的两个受累患者家系A和B中各检出6名和2名女性携带者,家系A中产前检出1名第1内含子倒位受累胎儿.结论 采用双管多重PCR法可以直接检测凝血因子Ⅷ第1内含子倒位突变,完善了重型血友病A家系携带者检测和产前诊断.     

血小板衍生生长因子及STI 571对人脐带间充质干细胞迁移的影响

目的探讨血小板衍生生长因子(PDGF)单独应用及与其受体抑制剂STI 571联合应用对人脐带间充质干细胞(MSCs)移行的影响,以探讨PDGF及STI 571对MSCs变化的影响,为评估MSCs的临床应用提供依据。方法采用细胞划痕的方法观察不同时间点MSCs的迁移情况。结果 PDGF单独应用及与STI 571联合应用对MSCs迁移的影响,单用PDGF组(EG1)较对照组迁移快;PDGF及STI 571二者联合应用组(EG2)迁移较单用PDGF组慢。结论①PDGF可以促进MSCs迁移。②联合应用PDGF与STI 571可以抑制MSCs迁移。     

囊性淋巴管瘤13例临床诊治体会

囊性淋巴管瘤（cystic lymphangioma）是一种自淋巴管发生的罕见的良性病变,临床和病理上命名较混乱,有的称为淋巴管水囊肿或囊样水瘤,有的称为单纯性淋巴管瘤或囊性淋巴管瘤.好发于颈部（75％）,其余可见于腋部（20％）、纵隔、腹部和盆腔.包括大网膜囊肿、肠系膜囊肿、囊性水瘤等类型.本研究回顾性分析13例囊性淋巴管瘤患者的临床资料,总结分析诊治经验,现报告如下.     

MC和CEA抗体免疫组化染色在胸腹水涂片的应用研究

目的探讨MC和CEA抗体免疫组化染色在腺癌性胸腹水涂片中的应用。方法收集腺癌性胸腹水离心涂片37例,采用免疫组化二代二步法进行染色,并与HE常规染色涂片进行对照。结果腺癌性胸腹水离心涂片中的腺癌细胞对CEA抗体显阳性,间皮细胞对MC抗体显阳性,而在HE常规染色中腺癌细胞和增生间皮细胞不易区分。结论免疫组化染色可以提高细胞的分辨率,从而识别HE常规染色难以区分的腺癌细胞和增生间皮细胞,在细胞学诊断上具有一定的应用前景。