缺氧诱导因子-1α在去势前后大鼠腹叶前列腺中表达的变化

目的探讨与缺氧相关的缺氧诱导因子-1α(HIF-1α)是否参与去势后前列腺萎缩过程.方法24只SD大鼠分为3组,其中A组(n=8)为假手术对照组,B组(n=8)为去势组,C组(n=8)为雄激素替代组(去势后肌注十一酸睾酮50mg/kg);术后3天处死,通过半定量RT-PCR检测与HIF-1α在去势前后前列腺表达变化.结果去势后大鼠前列腺的体积萎缩变小;雄激素替代组出现前列腺增生变大;对照组正常的大鼠前列腺有HIF-1 α mRNA低水平表达,去势组HIF-1α mRNA表达量增加,雄激素替代组HIF-1αmRNA表达量减少,与正常对照组比较,去势组的HIF-1α mRNA的表达量显著增加(P＜0.05),雄激素替代组的HIF-1αmRNA的表达量显著减少(P＜0.01).结论前列腺组织的缺氧参与去势后大鼠前列腺的早期萎缩过程.     

MMP-2、TIMP-2在内毒素诱导性葡萄膜炎中的表达

目的　探讨基质金属蛋白酶 2 (MMP 2 )及其组织型抑制剂 (TIMP 2 )在内毒素诱导性葡萄膜炎 (EIU)模型中的表达及意义。方法　 2 0 0 μg伤寒杆菌内毒素注射于SD大鼠双后足垫 ,建立EIU模型。用免疫组织化学方法检测MMP 2、TIMP 2在内毒素注射后不同时间点 (0、 6、 12、 18、 2 4、 4 8、 72、 96h和 7d)的表达。结果　内毒素注射后 6h开始出现炎症 ,于 2 4h炎症达到高峰 ,以后逐渐减轻 ,7d时基本消退。虹膜、睫状体的上皮细胞和渗出的炎性细胞表达MMP 2和TIMP 2。MMP 2在 6h表达开始增高 ,18～ 2 4h达高峰 ,以后逐渐下降。TIMP 2于 12h出现表达 ,4 8h达高峰 ,以后逐渐下降。TIMP 2和MMP 2平均吸光度值的比值与炎症程度呈负相关。结论　MMP 2是与炎症反应相关的调节因子 ,其过量表达参与葡萄膜炎的发病。减低MMP 2的活性或降低MMP 2 /TIMP 2的比值可能为治疗葡萄膜炎的新思路。     

早期高血压主动脉单核细胞趋化因子—1的表达

目的：探讨高血压早期主动脉壁单核细胞趋化因子-1(MCP—1)的表达。方法：用原位杂交和RT—PCR方法检测急性期两肾一夹(2KIC)高血压大鼠在血压升高不同时间主动脉壁MCP—1的表达。结果：正常血压大鼠主动脉壁无MCP—1的表达；在2K1C大最高血压形成一周，主动脉壁MCP—1即有表达，并随时间延长，其表达持续增加。结论：提示高血压早期即有主动脉壁MCP—1的表达，并随时间延长增加，这可能与其加速动脉粥样硬化形成有关。     

口腔黏膜下纤维性变S100蛋白表达

OBJECTIVE: To study the expression of S100 in oral submucose fibrosis(OSF). METHODS: Immunohistochemistry assay was performed on 10 cases of OSF, 10 cases of oral epithelial dysplasia (OED) and 8 cases of normal oral epithelium using monoclonal antibody against S100 protein. RESULTS: S100 did not express in the normal oral muscosal epithelium. The S100 positive nuclear staining was found in 50% of the OSF and OED cases, which was significantly higher than that in the normal oral epithelium (P < 0.05). But the positive staining in the OSF and OED cases had no difference (P > 0.05). CONCLUSION: S100 expression is closely related to the development of OSF and OED. The positive staining expression in the OSF and OED cases is the same.     

皮质激素对人体血管收缩试验的研究

在20名正常人前臂内侧涂以4种以清凉油为基质含不同浓度地塞米松(0.1、0.05、0.025、0.0125%)的皮炎速灵油膏,并以清凉油作阴性对照,地塞米松软膏作阳性对照。采用改良的Mckenzie和Stoughton法,将六种药剂涂于同一个体,以消除个体间反应差异。涂药后3h拭去药物,再经2、3、4、5、7、9及21h进行观察并打分,在双盲条件下根据用药部位发白情况由3名评估者对每名受试者独立打分,应用Wilcoxon等经典秩和试验法进行统计分析,结果显示清凉油和所有含地塞米松的制剂之间存在着非常显著的差异,并对受试者反应和评估者打分的变异系数进行了计算。我们的体会是血管收缩试验在黄种人也是可行的,而这种打分系统只要提供足够数量的受试者,特别适宜于应用Wilcoxon等统计方法。     

Effects of Activated Complement on Lung Fluid Exchange in Conscious Goats:Role of Superoxide Anion

The effects of zymosan-activated plasma(ZAP)on lung fluid exchangeand on superoxide anion production by granulocytes were studied in 8 consciousgoats with chronic lung lymph fistula,It was found that after ZAP infusion, thecirculating granulocytes were activated and the release of superoxide anions wasmarkedly enhanced. There was an increase in lung lymph flow and proteinconcentration.It suggests that the superoxide anion released by the stimulatedgranulocytes can play a role in inducing lung injury by the activated complement.     

高效液相色谱法测定人血浆中翁丹西隆浓度

建立了翁丹西隆的高效液相色谱测定法。血浆样品用醋酸乙酯萃取，以ＺｏｒｂａｘＳｉｌｉｃａ为固定相，６０％０．０２５ｍｏｌ／Ｌ乙酸钠缓冲液（ｐＨ４．２）、４０％乙腈为流动相，紫外３１０ｎｍ处测定。采用外标法峰高定量。最低检出浓度达１ｎｇ／ｍｌ，线性范围１．０～４０．０ｎｇ／ｍｌ（ｒ＝０．９９９６），平均回收率为（９５．２２±３．５８）％（ＲＳＤ３．７６％）。用本法测定人血浆中翁丹西隆浓度具有快速、简便、专一性和灵敏度高的优点。     

脐血抗—HPCA—2和Tük3标记的CD34阳性细胞的流式细胞仪比较分析

在标记脐血造血祖细胞表面抗原（ＨＰＣＡ），ＣＤ３４中，比较抗－ＨＰＣＡ－２－ＦＩＴＣ和Ｔｋ３（纯抗体）标记的ＣＤ（３４＋）细胞在流式细胞仪分析中的荧光特征及两种单抗标记的ＣＤ（３４＋）细胞与体外培养的粒单细胞集落形成单位（ＣＦＵ－ＧＭ），红系爆发形成单位（ＢＦＵ－Ｅ），和混合集落形成单位（ＣＦＵ－Ｍｉｘ）的相关性。结果发现脐血有核细胞中，抗ＨＰＣＡ－２阳性细胞占１．０５±０．７２％（ｎ＝１３），Ｔｋ３阳性细胞占２．０６±１．２５％（ｎ＝８），差别显著（Ｐ＜０．０５）。每毫升脐血两种抗体标记的细胞分别为９６．５６±５６．６４和２３１．４０±１６３．９３（Ｐ＜０．０５）。尽管ＨＰＣＡ－２阳性细胞与Ｔｋ３阳性细胞数量呈显著正相关（ｒ＝０．８７５，Ｐ＜０．０１），前者与ＣＦＵ－ＧＭ，ＢＦＵＥ，ＣＦＵ－Ｍｉｘ及集落总数ＣＦＵｓ均呈正相关，而后者仅与ＣＦＵ－ＧＭ，ＣＦＵｓ相关。研究提示在检测造血祖细胞时，用抗－ＨＰＣＡ－２－ＦＩＴＣ代替Ｔｋ３可降低假阳性，获得较好的ＯＤ（３４＋）细胞与ＣＦＵ间的线性关系。     

用结合^131碘和化疗药物的明胶微球作肝动脉...

Nine patients with inoperable hepatoma were treated by using hepatic arterial embolization 131I and chemotherapeutic agent gelatin microsphere (131I-CA-GM). The emission CT after operation detected that the microspheres were concentrated on tumor area. The ratio between the radioactivity in tumor and that in liver was 4.1:1. A case died of ictopic embolization; the others survived 3, 4, 5, 19, 24, 7, 8, and 12 months respectively. Three of them were still alive. 131I-CA-GM has triple anticarcinogenic actions, including the arterial occlusion, targeting chemotherapy and internal radiation. The microspheres can selectively accumulate in the tumor artery and can be easily traced by gamma-camera or emission CT. 131I-CA-GM is a hopeful embolic agent for the treatment of liver cancer, but some problems about ectopic arterial embolization should be further studied.