生长抑制因子1在子宫内膜异位症的表达

目的:探讨生长抑制因子1(ING1)在子宫内膜异位症(EMs)发病机制中的作用。方法:采用免疫组化SABC法检测40例患者(EMs)在位及异位子宫内膜组织ING1的表达,并与20例正常子宫内膜(对照组)进行比较。结果:ING1在EMs组异位腺体的表达分别低于在位腺体及对照组(P<0.05),在异位间质的表达低于对照组间质(P<0.05);ING1在EMs组、对照组增生期与分泌期的表达及在EMs组I-Ⅱ期与Ⅲ-IV期异位腺体和间质间的表达均无明显差异(P>0.05)。结论:ING1在异位内膜的腺体及间质中的低表达可能在EMs的发病中起重要作用。ING1表达量与EMs的严重程度无关。     

川芎嗪对缺氧大鼠血浆ET肺内ET-1和肺血管平滑肌细胞ETA-RmRNA表达的影响

目的：探讨川芎嗪（ｌｉｇｕｓｔｒａｚｉｎｅ,Ｌｉ）防治缺氧性肺动脉高压（ＨＰＨ）的机制。方法：３８只ＳＤ大鼠分为正常对照（Ｎ）组、正常加Ｌｉ（Ｎ＋Ｌｉ）组、缺氧（Ｈ）组、缺氧加Ｌｉ（Ｈ＋Ｌｉ）组,建立ＳＤ大鼠ＨＰＨ模型（１０±０．５％Ｏ２,２ｌｄ）;用放射免疫技术测定血浆内皮素（ＳＥＴ）含量;用免疫组化染色观测肺内ＥＴ１表达水平;用组织切片原位杂交法检测ＥＴＡＲｍＲＮＡ在肺血管平滑肌细胞内表达情况。结果：Ｈ组ＳＥＴ水平显著高于Ｎ组和Ｈ＋Ｌｉ组,Ｐ值均小于０．０１,后两组比较Ｐ大于０．０５;Ｈ组肺内ＥＴ１阳性免疫反应染色物质较Ｎ组明显增加,而Ｈ＋Ｌｉ组较Ｈ组明显减少;Ｈ组ＰＶＳＭＣ内ＥＴＡＲｍＲＮＡ表达明显高于Ｎ组,而Ｈ＋Ｌｉ组有所减少,但与Ｈ组比较Ｐ值大于０．０５。结论：Ｌｉ能有效地从阻抑缺氧性肺血管收缩反应和缺氧性肺血管重建两方面预防ＨＰＨ,其作用机制与抑制ＥＴ１表达与释放,降低ＳＥＴ水平,并在一定程度上抑制ＥＴＡＲｍＲＮＡ表达有关     

抗骨肉瘤单克隆抗体在骨肉瘤组织中的免疫组化定位研究

本文报道了用本室建立的2株抗人体骨肉瘤细胞株所分泌的单克隆抗体,采用ABC酶标法,对24种肿瘤组织和正常人体组织进行了免疫组化定位研究,发现OS-McAb_1和OS-McAb_2除对部分骨源性恶性肿瘤有阳性反应外,对其他部位的肿瘤均显示阴性反应;与所标记的正常成人及胎儿相应组织无交叉反应。提示OS-McAb对骨肉瘤有较高的特异性,在骨源性恶性肿瘤的免疫诊断方面有一定应用价值。     

Cell kinetic analysis of human tumor xenografts using anti-bromodeoxyuridine monoclonal antibody

The cell kinetics of human tumor xenografts serially transplanted into nude mice was examined using bromodeoxyuridine (BrdU) and anti-BrdU monoclonal antibody. After various doses of BrdU were given intraperitoneally into tumor bearing nude mice, the tumors were resected and stained immunohistochemically, using the anti-BrdU monoclonal antibody. The number of stained cells was demonstrated as the labeling index (LI). The optimal condition for BrdU staining was assumed to be 300mg of BrdU per kg followed by an incubation period of one hour. Since the LI by BrdU closely correlated with that in autoradiography by³H-TdR, this method is more useful and safer than the conventional autoradiographic study for investigating clinical cell kinetic analysis, as there is no need to use potentially hazardous radioactive compounds and the period of assay is shorter.     

Environmental tobacco smoke exposure during intrauterine period promotes granulosa cell apoptosis: a prospective,randomized study

Objective: To evaluate the intrauterine effect of cigarette smoke on cell death and DNA damage in follicular cells of fetal ovarian tissue. Methods: A prospective, randomized study was conducted with 25 female wistar-albino rats. The rats were randomized to be exposed either to cigarette smoke or to room air, initiating from proestrous period and during pregnancy. Newborn female rats were categorized as Group 1 (n = 24) that had been exposed to cigarette smoke during intrauterine life and Group 2 (n = 7) that had been exposed to room air during intrauterine life. Bilateral ooferectomies were performed on the 2nd week of their life. TUNEL (in-situ Terminal Deoxynucleotidyl-Transferase Mediated dUTP-Nick-End Labeling) immunofluorescent staining and immunohistochemical analyses with caspase-3 were used for detection of DNA damage and apoptosis. Primary outcomes were apoptotic index and immunohistochemical scores (HSCORE). Secondary outcomes were ovarian follicle counts and birth weights of newborn rats. Results: There was a significant increase of HSCORE and apoptotic index in Group 1. Increased immunofluorescent staining; evaluating DNA damage, with TUNEL method was observed in granulosa cells in Group 1. Conclusions: Intrauterine exposure to cigarette smoke diminishes ovarian reserve of female offspring, raising the concern about the generational impact of maternal smoking on ovarian function in the human.     

垂体多激素腺瘤的免疫病理研究

目的 探讨垂体多激素腺瘤的临床表现和免疫病理学特点，以提高其病理诊断的准确性。方法 选取1990年3月至2002年12月经手术切除的垂体多激素腺瘤103例进行免疫组化检测，其中18例另行双标记免疫组化染色。结果 全组以PRL-GH型垂体腺瘤最多，共10例（9．7％）。大多数病例只表现出一种内分泌症状，仅7例（6．8％）表现出两种不同的内分泌症状。垂体多激素腺瘤的免疫组化组合形式多样，2～6种激素组合均有。免疫组化、血清激素水平与内分泌症状之间相关性最好的激素是PRL。结论垂体多激素腺瘤的免疫组化检测对于其正确的病理诊断非常重要。     

Detection of Ⅴ,Ⅲ and Ⅰ Type Collagens of Dermal Tissues in Skin Lesions of Patients with Systemic Sclerosis and Its Implication

This study investigated the contents and distribution of collagen Ⅴ （Col Ⅴ） in skin lesions of the patients with systemic sclerosis （SSc） and its roles in the pathogenesis. The contents and distribution for α1 chain of collagen type Ⅰ, Ⅲ and V [α1 （Ⅰ）, α1 （Ⅲ） and α1 （Ⅴ）] in skin lesions of 36 patients with SSc （9 cases of mild fibrosis, 14 moderate, and 13 severe） were detected by using im- munohistochemical SP method. Six cases of normal skin tissues served as controls. The results showed that there was diffuse distribution for three kinds of collagens in dermis. The deep staining α1 （Ⅰ） and α1 （Ⅲ） masses or bands were seen in reticular layer, while α1 （Ⅴ） was distributed more ho- mogeneously. From control to weak, moderate and severe fibrosis stages, α1 （Ⅰ）, α1 （Ⅲ） and α1 （V） showed a gradually increased trend in skin lesions （P〈0.05）. α1 （Ⅴ） was obviously elevated in skin lesions at early stage and persisted in whole fibrotic process and risen in greater contents, while α1 （Ⅰ） and α1 （Ⅲ） were to go higher late and were apparently elevated at moderate and late stages. Com- pared with α1 （Ⅰ）, α1 （Ⅴ） took leading increase at early stage in skin lesions （P〈0.01）, and had more elevated contents than α1 （Ⅲ） at moderate and late stages. The fibrotic changes in dermal reticular layer occurred earlier than those in papillary layer, and the abnormalities of α1 （Ⅴ）/α1 （I） ratio ap- peared before α1 （Ⅲ）/α1 （Ⅰ） ratio. It was concluded that a lot of α1 （Ⅴ） began to deposit in greater contents prior to α1 （Ⅰ） and α1 （Ⅲ） at early stage in SSc and persisted in whole fibrotic process. The changes of α1 （Ⅴ） contents in reticular layer occurred earlier than those in papillary layer, and it sug- gested that the fibrosis in reticular layer appeared earlier.     

38例乳腺癌组织中酸性同功铁蛋白与P53蛋白免疫组化的检测分析

 目的:为了探讨酸性同功铁蛋白在乳腺癌组织中的表达水平及其与P⁵³表达的关系,明确酸性同功铁蛋白作为乳腺癌诊断指标的意义。方法:采用抗人胎盘酸性同功铁蛋白单克隆抗体和免疫组化方法(LSAB法)对38例乳腺癌和30例乳腺腺病组织进行了检测。结果:73.7%(28/38例)的乳腺癌和67%(2/30例)的乳腺腺病患者AIF呈阳性表达,阳性细胞胞浆着色明显,阳性细胞主要是癌细胞和增生的导管上皮细胞；44.7%(17/38例)的乳腺癌和33%(1/30例)的乳腺腺病组织P⁵³呈阳性表达,阳性着色位于核内,阳性细胞为癌细胞和非典型增生的导管上皮细胞;P⁵³表达与AIF表达符合率为60.5%,二者有一定的相关性(0.05     

An immunohistochemical study of mixed tumor of the skin.

An asymptomatic tumor developed on the upper lip of a 63-year-old man. Histologically, the tumor contained glandular and cystic structures forming many branching lumina, and many scattered single cells in an abundant mucoid to chondroid stroma. The tumor was diagnosed as mixed tumor of the skin. Histochemically, the cells composing the tubular structures contained neutral mucopolysaccharides and the stroma, acid mucopolysaccharides. Immunohistochemically, the cells of the glandular and cystic structures showed epithelial and sweat gland differentiation (EMA-, CEA-, BRST-1- and BRST-2-positive), while the cells scattered in the stroma showed a tendency toward myoepithelial differentiation (S-100 protein- and vimentin-positive).     

胆囊癌P~(53)蛋白与MOR基因产物P糖蛋白的表达方式及相互关系

目的 探讨胆囊癌组织中P53和P -gP的表达 ,与生物学行为的关系及二者之间的相互关系。方法 应用免疫组织化学SP法对41例胆囊癌组织中的P53和P-gP的表达情况进行检测。结果 胆囊癌组织P53和P-gP的阳性率分别为46.3% ,56.1%。P53和P-gP的表达与胆囊癌的组织类型 ,分化程度 ,浸润转移无相关性。结论 P53,P-gP在胆囊癌中有一定的表达。P-gP是胆囊癌耐药的重要因素之一。P53与P -gP的表达与胆囊癌的组织类型 ,分化程度 ,浸润转移无关。P53与P -gP在胆囊癌中的表达具有相关性