细胞周期素H在食管磷癌中的表达

目的:探讨食管鳞癌组织中细胞周期素H的表达及临床意义.方法:采用免疫组织化学SP法对39例食管鳞癌组织和9例癌旁正常食管组织检测细胞周期素H的表达;利用HPIAS-2000图像分析系统测定细胞周期素H在以上各组中表达的平均光密度和平均阳性面积率.对所获得的检测结果进行图像分析处理.结果:①经单因素方差分析,CyclinH的表达组间有统计学差异(P<0.05).经q检验,正常食管组织与低分化食管鳞癌、中分化食管鳞癌及高分化食管鳞癌比较,Cyclin H的平均光密度及阳性面积率有统计学差异(P<0.05),低分化食管鳞癌、中分化食管鳞癌及高分化食管鳞癌间比较,Cyclin H的平均光密度及阳性面积率亦有统计学差异(P<0.05).②各年龄组、性别组和临床分期,组间Cyclin H的表达无统计学差异(P0.05),淋巴结转移阳性与阴性组间Cyclin H的表达有统计学差异(P<0.05);而与年龄、性别及临床分期无关.结论:细胞周期素H与食管鳞癌的发生和发展过程有密切关系.     

Expression and Significance of Bcl-2, Bax, Fas and Caspase-3 in Different Phases of Human Hemangioma

Summary： The relationship between Bcl-2, Bax, Fas, caspase-3 and development of hemangioma and the molecular mechanism was investigated. By using immunohistochemical S-P method, proliferating cell nuclear antigen was detected. According to the classification of Mulliken in combination with PCNA expression, 27 cases were identified as proliferating hemangioma and 22 cases as involutive hemangioma. Five normal skin tissues around the tumor tissue served as controls. By using immunohistochemical technique, the expression of Bcl-2, Bax, Fax and Caspase-3 was detected. The cells expressing Bcl-2, Bax, Fax and cappase-3 were identified as hemangioma endothelia by immunohistochemical staining of Ⅷ factor. The average absorbance （A） and average positive area rate of Bcl-2, Bax, Fas and caspase-3 expression were measured by using HPIAS-2000 imaging analysis system. The results showed that the expression of Bcl-2 in the endothelia of proliferating hemangioma was significantly higher that in involutive degenerative hemangioma endothelia and vascular endothelia of normal skin tissue （P〈0.01）. The expression of Bax, Fas and Caspase-3 in the endothelia of involutive hemangioma was obviously higher than in the endothelia of proliferating hemangioma and normal skin tissue （P〈0.01）. The expression of BAx and Fas in endothelia of proliferating hemangioma was higher than in those of normal skin tissue （P〈0.05）. It was suggested that Bcl-2, Bax, Fas and caspase-3 might be involved in the development and involution of hemangioma. Bcl-2 could promote the growth of hemangioma by inhibiting apoptosis of endothelia. Bax, Fas and caspase-3 promote the switch of hemangioma from proliferation to involution by inducing the apoptosis of hemangioma endothelia.     

原位杂交检测NF-κB p65在皮肤血管瘤组织中的表达

目的:探讨NF-κB p65在血管瘤发生、发展及退化过程中的表达状况及其意义。方法:采用免疫组织化学方法(S-P法)和原位杂交的方法,检测人皮肤血管瘤增生期、退化期及正常皮肤组织及内皮中NF-κB p65的表达水平,并利用计算机图像分析技术测量不同时期血管瘤组织和正常皮肤组织NF-κB p65表达的平均光密度和平均阳性面积。结果:增生期血管瘤内皮细胞NF-κBp65表达水平高于退化期,差异有显著性(P<0.01);退化期血管瘤内皮细胞NF-κB p65表达水平与正常皮肤组织相比,差异无显著性(P>0.05)。结论:NFκ-B p65可能通过调控血管生成因子的表达而促进血管瘤的形成。     

Effect of Retinoic Acid on Apoptosis and Expression of Fas Proteins in Mouse Blastocysts Cultured In Vitro

Mouse blastocysts were exposed to doses of 0, 1 and 10 μmol/L retinoic acid （RA） for 24 h and the cytotoxic effect of RA on the mouse blastocysts in vitro was observed. FITC-labeled terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling （TUNEL-FITC） assay was employed to stain apoptotic cells and immunohistochemical S-P staining method was used to detect the expression of Fas protein in mouse blastocysts in vitro. The results showed that RA could induce apoptosis and increase the expression of Fas proteins of trophectoderm （TE） and inner cell mass （ICM） cells in blastocysts. Compared with the findings for the control blastocysts, exposure to RA （10 μmol/L） resulted in a more significant apoptosis and higher expression level of Fas proteins （P〈0.01）. It was concluded that RA could induce apoptosis, which may result in a significant reduction in the average number of total cells and the trophectoderm/inner cell mass in blastocysts and an increased expression of Fas protein, suggesting that RA had a cytotoxic effect on the growth and development of early embryos in mice.     

雄激素受体和载脂蛋白D在腋(臭)区顶泌汗腺中的表达及临床意义

目的:探讨雄激素受体(AR)和载脂蛋白D(ApoD)在腋臭患者腋区顶泌汗腺细胞中的表达情况及其临床意义。方法:采用免疫组织化学方法(SP法)检测AR和ApoD蛋白在腋臭患者和正常人腋区具有3种不同分泌时期的顶泌汗腺细胞中的表达水平。利用计算机图像分析技术测量AR和ApoD蛋白在顶泌汗腺不同分泌时期中表达水平以及在整体汗腺中的表达水平。结果:①腋(臭)区顶泌汗腺细胞的分泌活动具有周期性(分泌前期、分泌期和分泌后期)、非同步性分泌的特点;②AR和ApoD蛋白在腋臭患者顶泌汗腺中的表达水平均高于其在正常人顶泌汗腺中的表达水平;③AR和ApoD蛋白在不同分泌时期顶泌汗腺中的表达水平是不相同的;④在腋区顶泌汗腺组织中,ApoD蛋白的表达水平与AR蛋白的表达水平之间具有正相关性。结论:腋臭的发病可能与AR和ApoD蛋白在腋(臭)区顶泌汗腺细胞中表达水平的增加有关。     

抗凋亡因子Survivin在肾性高血压心肌中的表达

目的:探讨L-精氨酸对肾性高血压心肌保护的作用机制。方法:将大鼠随机分为3组:正常对照组(5只)、高血压对照组(20只)及L-精氨酸治疗组(20只),制作肾性高血压动物模型,L-精氨酸治疗组通过胃管灌饲给予L-精氨酸,连续给药8周后,切取各组心室肌组织,进行免疫组织化学染色,观察各组心肌组织Survivin的表达。利用HPIAS-2000图像分析系统测定Survivin在各组中表达的平均光密度和平均阳性面积率。结果:Survivin在L-Arg组的表达显著高于高血压对照组。图像分析结果显示Survivin在两组间差异有显著性意义(P<0.01)。结论:L-精氨酸对肾性高血压导致的心肌细胞损伤具有重要的保护作用。     

川芎嗪对小鼠银屑病的影响

目的：研究川芎嗪对小鼠银屑病模型的影响。方法：采用腹腔注射已烯雌酚制备小鼠银屑病实验模型，从腹腔分别注射不同剂量（5mg/kg-15mg/kg)的川芎嗪，观察小鼠阴道上皮细胞及尾部鳞片的变化，结果：川芎嗪各剂量组使小鼠阴道上皮细胞有丝分裂指数均明显降低；小鼠尾部鳞片的颗粒层形成数增高，且有剂量依赖性，结论：川芎嗪对银屑病实验模型小鼠阴道上皮细胞有丝分裂有明显抑制作用；对小鼠尾部鳞片中颗粒层有增加作用。     

川芎嗪对青霉素致痫大鼠神经细胞的影响

为研究川芎嗪 ( TMP)对青霉素致痫大鼠大脑皮层神经细胞结构的变化 ,使用青霉素致痫大鼠模型 ,采用 BL-4 10生物机能实验系统记录双侧大脑皮层痫样放电 ,待癫痫样放电稳定后 ,腹腔注射不同剂量的 TMP,待其抑制作用最明显时 ,取大脑切片 ,观察大脑皮层神经细胞的结构变化。结果显示 ,TMP对青霉素致痫大鼠大脑皮层神经细胞的形态结构有明显的恢复作用     

川芎嗪对大鼠癫痫放电时神经元超微结构变化的研究

目的：研究川芎嚓(TMP)对大鼠癫痫放电时其大脑神经元超微结构的变化。方法：使用青霉素致癫大鼠模型。采用BL-410生物机能实验系统记录腹腔注射不同剂量川芎嗪对双侧大脑皮层癫痫放电，观察川芎嗪对癫痫放电频率及振幅的影响。并用透射电镜观察大脑皮层神经元超微结构的变化。结果：与生理盐水对照组比较，川芎嗪可使大鼠癫痫放电频率减慢，振幅降低。并且随着频率的减慢和振幅的降低。大脑皮层神经元超微结构形态也恢复正常。结论：川芎嗪能明显抑制大鼠癫痫放电。并使神经元内的细胞器结构恢复正常。