豚鼠柯替氏器支持细胞的分离和鉴定

目的：建立豚鼠柯替氏器支持细胞的分离方法，并观察活性支持细胞的形态特征。方法：对豚鼠基底膜用Ⅳ型胶原酶(1mg/ml)消化和微机械分离法获得柯替氏器单离支持细胞，在倒置显微镜下观察细胞的活性和形态特征并记数。结果：不同支持细胞在倒置显微镜下各有其形态特征，第一、二排Deiters细胞为逗点状，第三排为弓状：Hensen细胞为长圆形，半透明的胞质内含有数个脂质样颗粒；外柱细胞呈哑铃状，两端对称性圆球形，中间可见清晰的微管；内柱细胞呈“长勺形”，底部为圆球状，顶部逐渐向外侧弯曲成杯口样结构。每个豚鼠耳蜗可分离出单离Dieters细胞1～4个，Hensen细胞10～20个，内柱细胞和外柱细胞分别约80～100个。结论：Ⅳ型胶原酶消化和微机械分离法可分离出豚鼠柯替氏器的Deiters细胞、Hensen细胞和内、外柱细胞，可为在细胞和分子水平对单离活性支持细胞进行形态和功能变化的研究提供一种简便实用的方法。     

克罗米酚与HCG促排卵作用的临床观察

目的　认识克罗米酚 (CC)促排卵的缺陷 ,评价人绒毛膜促性腺激素 (HCG)的辅助作用。方法　具有正常月经周期的妇女 95例 ,对照组 39例 ;单独使用CC组 30例 ;CC +HCG组 2 6例。观察三组受试者排卵率、子宫内膜厚度及回声类型、排卵日 (LH +0 )及种植窗期 (LH +7)激素水平。结果　CC使子宫内膜变薄 ,回声类型改变 ;CC使黄素化不破裂卵泡综合征 (LUFS)的发生率 (36 6 7% )增加 ,与对照组 (5 13% )比较P <0 0 5 ;CC使种植窗期E2 异常增高 (对照组 115 0 0pg ml,CC组 2 89 5 0pg ml,P <0 0 5 ) ;E2 、P水平与内膜厚度无明显相关性 ,且不能预测LUFS的发生 ;HCG有望降低LUFS的发生率。结论　CC可能使子宫内膜厚度、回声类型、血清激素环境偏离种植所需的理想状态 ;并增加LUFS的发生率 ,HCG的使用有望纠正CC在促排卵过程中的这一缺陷     

雌激素受体亚型mRNA在子宫内膜癌组织中的表达

目的比较雌激素受体两种亚型α和β在子宫内膜癌中的表达,探讨雌激素受体亚型在子宫内膜癌发生和发展中的作用.方法用RT - PCR法检测子宫内膜癌和正常子宫内膜组织雌激素受体mRNA的表达.结果①与正常子宫内膜组织比较,子宫内膜癌中ER α mRNA、ER β mRNA表达和ER β/ER α mRNA比值都明显上升;②早期、内膜样子宫内膜癌ER α mRNA明显上升.结论子宫内膜癌的发生与ER α和ER β的表达有关,ER α mRNA表达升高可能提示子宫内膜癌预后较好.     

子宫内膜癌中p16、E-cad mRNA表达的研究

目的 :探讨p16及E 钙粘附蛋白 (E cad)基因mRNA在子宫内膜癌中的表达及意义。方法 :采用RT PCR技术检测 3 0例子宫内膜癌及 8例正常子宫内膜组织的p16及E cadmRNA的表达。结果 :①子宫内膜癌p16mRNA的阳性表达明显低于正常子宫内膜 (P <0 .0 1) ,但p16mRNA的表达与子宫内膜癌的组织病理分级无关 ;②E cadmRNA在子宫内膜癌中呈低表达 ,正常组织内呈强阳性表达 ,二者差异非常显著 (P <0 .0 1) ,并且在子宫内膜癌中E cadmRNA的阳性表达与组织病理学分级呈负相关 (P <0 .0 5 )。结论 :p16、E cadmRNA的表达在子宫内膜癌的发生及进展过程中起重要作用     

注射用司帕沙星的溶血试验

目的　观察注射用司帕沙星在试管内对新西兰白兔有无溶血、凝集作用。 方法 　取规定量受试药加入 2 %兔血生理盐水混悬液中 ,观察溶血和凝集情况。 结果 　第一～六管溶液中红细胞全部下沉 ,上层液体无色澄明 ,第七管全部溶血。 结论 　注射用司帕沙星在终浓度 1mg·m L- 1时 ,对兔红细胞无溶血和凝集现象。     

胃癌患者血清肝细胞生长因子的检测及意义

Objective To explore the clinical significance of serum HGF level changes in gastric cancer pa-tients. Methods 60 cases of patients who operatied and clinicopathological confirmed gastric cancer, were detected serum HGF level by enzyme linked immunosorbent assay(ELISA) .40 cases were administered radical gastrectomy,20 cases of patients who had distant metastasis and loss operative chance were detected 7 days and 3 months preopera-tive,postoperative serum HGF level respectively. At the same time 40 cases of chronic gastritis patients and 40 cases of healthy examination people were selected as control group. Results Serum HGF level in patients with gastric canc-er was significantly higher than that of chronic gastritis and normal controls(P <0. 01). The serum HGF level of pa-tients with tumor vascular invasion significantly increased(P <0. 05). The patients with lymph node metastasis,serum HGF level was significantly higher than that patients with no lymph node metastasis(P <0. 05). The serum HGF level of patients with liver metastasis was significantly higher than that patients with no liver metastasis(P <0. 05). The se-rum HGF level of gastric cancer patients whose maximum diameter of the tumor ≥3cm were significantly higher than that maximum diameter of the tumor <3cm(P<0. 05). According to TNM staging of gastric cancer,the serum HGF level of Ⅰ phase and Ⅱ phase patients were significantly lower than that Ⅲ phase and Ⅳ phase patients(P <0.05).The serum HGF level of gastric cancer patients had no significant correlation with sex ,age and histological type(P <0.05). The serum HGF level of 40 cases of patients who were 1 week after surgery were significantly decreased,the patients who were 3 months after surgery were more obvious(P <0. 05 and P <0. 001). Conclusion HGF may play an important role in gastric cancer occurrence and development. The detection of serum HGF level can become an im-portant index for monitoring the degree of gastric cancer and prognosis of patients.     

Puerarin blocks Na~+ current in rat ventricular myocytes

AIM: To study the effect of puerarin (Pue) on Na~+ channel in rat ventricular myocytes. METHODS: Whole-cell patch-clamp technique was applied on isolated cardiomyocytes from rats. RESULTS: Pue inhibited cardiac I_(Na) in a positive rate-dependent and dose-dependent manner, with an IC_(50) of 349 μmol/L. The kinetics of blockage of cardiac sodium channel by Pue resembled the ClassIa/Ic of antiarrhythmic agents. Pue 300 μmol/L did not alter the shape of the I-V curve of I_(Na), but markedly shifted the steady-state inactivation curve of I_(Na) towards more negative potential by 15.9 mV, and postponed the recovery of I_(Na) inactivation state from (21.9±1.6) ms to (54.4±3.4) ms (P<0.01 ). It demonstrated that the steady state of inactivation was affected by Pue significantly. CONCLUSION: Pue protected ventricular myocytes against cardiac damage and arrhythmias by inhibiting recovery from inactivation of cardiac Na~+ channels.     

Facilitating effect of histamine on spatial memory deficits induced by dizocilpine as evaluated by 8-arm radial maze in SD rats

AIM: To investigate whether or not histamine is involved in spatial memory deficits induced by dizocilpine (MK-801) as evaluated by 8-arm radial maze of rats. METHODS: 8-Arm (4-arm baited) radial maze was used to measure spatial memory in rats. RESULTS: Bilaterally intrahippocampal (ih) injection of MK-801 (0.3 μg/site) impaired working memory and reference memory in rats. Both histamine (50, 100 ng/site, ih) and intraperitoneal (ip) injection of histidine (100, 200 mg/kg) markedly improved the spatial memory deficits induced by MK-801. On the other hand, the ameliorating effect of histidine (100 mg/kg, ip) was completely antagonized by α-fluoromethylhistidine (α-FMH, 5 μg/site, ih), a potent and selective histidine decarboxylase (HDC) inhibitor, and H_1-antagonist pyrilamine (1 μg/site, ih), but not by H_2-antagonist cimetidine, even at a high dose (2.5 μg/site, ih). CONCLUSION: The hippocampal histamine plays an important role in the ameliorating effect on MK-801-induced spatial memory deficits,     

“非典”患者康复出院6个月后免疫功能分析

目的 :检测和分析“非典”患者康复出院半年后的免疫功能。方法 :对 2 8例“非典”康复者出院半年后外周血分别进行免疫功能 :免疫球蛋白、补体、T淋巴细胞亚群检测和分析。结果 :“非典”患者康复出院后 6个月后免疫功能免疫球蛋白、补体、T淋巴细胞亚群检测值和对照组比较差异均无显著性 (P >0 0 5 )。结论 :SARS患者出院 6个月后虽仍存在不同程度的免疫功能异常 ,但与正常对照组比较无显著性差异。其免疫功能异常的原因可能与疾病本身、有基础病及年龄高有关。     

医学论文英文标题及摘要的常见句式

介绍了英文标题及摘要的常见句式。