内异消方剂对子宫内膜异位症不孕患者子宫内膜上皮细胞整合素亚单位β_3表达的影响

目的观察中药内异消方剂对整合素亚单位β3、肿瘤坏死因子(TNF-α)在子宫内膜异位症(EM)不孕患者子宫内膜上皮细胞中表达的影响。方法EM不孕患者50例,随机分为内异消治疗组30例,丹哪唑对照组20例,治疗前后应用免疫组织化学方法检测种植窗期子宫内膜上皮细胞TNF-α、整合素亚单位β3表达情况。结果整合素亚单位β3在子宫内膜上皮细胞的表达于治疗后两组均明显提高且两组之间具有显著性差异;TNF-α的表达两组均于治疗后明显降低,但两组之间无显著性差异。结论内异消方剂可通过调节子宫内膜的接受性(增强整合素亚单位β3的表达)来提高EM不孕患者的受孕率。     

三相交流电路中瞬时功率的分析和研究

基于瞬时无功功率理论分析了α-β坐标中的功率成分和三相电路中各相功率间的关系．为检测谐波电流和无功电流提供了研究的方法．     

系统性红斑狼疮患者胰岛素抵抗情况和胰岛β细胞功能的评价

目的评价系统性红斑狼疮(SLE)患者胰岛素抵抗情况和胰岛β细胞的功能。方法以在我院住院或门诊就诊的32例女性SLE患者为研究对象,以22名健康女性为对照,测定空腹血糖水平及空腹胰岛素水平,利用HOMA公式计算HOMA-IR及HOMA-β细胞分泌功能,在SLE患者与健康对照之间进行比较。结果SLE患者与健康对照比较,空腹血糖水平无显著性差异(4.58±0.61vs.4.62±0.56,P>0.05),但在空腹胰岛素水平增加的同时(12.13±4.32vs.8.84±2.19,P<0.01),HOMA-IR(2.38±0.62vs.1.62±0.42,P<0.01)及空腹HOMA-β细胞分泌功能(232.68±32.24vs.161.78±12.17,P<0.01)明显增加。结论SLE患者体内存在胰岛素抵抗和空腹胰岛素分泌的异常。     

关于无黏结预应力筋的极限应力在桥梁设计中取值的探讨

通过对20片T形和箱形截面模型梁进行破坏试验,来研究桥梁中无黏结预应力混凝土结构综合性能的影响因素以及无黏结预应力筋极限应力的计算方法.     

Radiosensitivity of β-elemene on rabbit VX2 renal transplant carcinoma model

Objective To investigate the effects of low dosage of β-elemene on the radiosensitivity of rabbit VX2 renal transplant carcinoma model. Methods We took the rabbit VX2 renal transplant carcinoma as the model. Experimental rabbits were divided into three groups: the control group, the radiation group, and the radiation +β-elemene (radiosensitivity) group. The change of tumor was observed by Spiral CT and B ultrasound to compare its regrowth period. The tumor was measured by light microscopy and electron microscopy. Results The tumor in radiosensitivity group was restrained obviously and the sensitization enhancement ratio (SER) of β-elemene was 1.89. Different apoptosis was observed under transmission electron microscopy. Conclusion Low dosage β-elemene can enhance the radiosensitivity of rabbit VX2 renal transplant carcinoma model and induce the apoptosis of tumor cells, but the mechanism needs further study. It promotes apoptosis in mechanisms in vitro.     

THE DETECTION AND CLINICAL SIGNIFICANCE OF hEGF AND β＿2－MG IN BALF OF PATIENTS WITH LUNG CANCER

ＴＨＥＤＥＴＥＣＴＩＯＮＡＮＤＣＬＩＮＩＣＡＬＳＩＧＮＩＦＩＣＡＮＣＥＯＦｈＥＧＦＡＮＤβ＿２－ＭＧＩＮＢＡＬＦＯＦＰＡＴＩＥＮＴＳＷＩＴＨＬＵＮＧＣＡＮＣＥＲ（陈国安）（刘天菊）（何积银）（李雅莉）（杨德昌）（任晓肖）（郑纯礼）ＣｈｅｎＧｕｏａｎ；...     

~(131)I—OIH肾图在双肾实质病变时的应用

本文对61例受检者~(131)I-OIH肾图及有关肾功能检查结果进行综合分析,试图探讨~(131)I-OIH肾图在双肾实质病变时的价值。结果表明:血、尿β-MG均和肾脏指数相关(n=20 γ_血=0.5125 γ_尿=-0.61624),尿β_2-MG和15min残留率相关(n=20,γ=0.6020)。正常人(n=19)与肾病综合症Ⅱ型(n=6),正常人与慢性肾盂肾炎(n=5)间,肾病综合症Ⅰ(n=5)、Ⅱ型间及急(n=5)、慢性肾盂肾炎间肾脏指数存在差异,15min残留率存在显著性差异。不同肾功能组间肾脏指数存在显著性差异。这说明:肾脏指数可以反映肾小管、肾小球的功能,而15min残留率主要反映肾小管功能。     

The β-amyloid protein induces S100 β expression in rat hippocampus through a mechanism that involves IL-1

Objective To explore the effect of β-amyloid protein （Aβ） on S100β expression in rat hippocampus and its mechanisms. Methods At 7 days after bilateral stereotaxls injection of different dose of fibrillar Aβ25--35 and interluekin-1 receptor antagonist （IL-1ra） into the rat CA1 region, the learning and memory abilities of rats were tested with passive avoidance task. Amyloid deposition was detected by using Congo red staining technique. Nlssl staining and immunohlstochemical techniques were used to analyze the number of neurons, and GFAP and the S100β expression in hippocampal CA1 region , respectively. Results After fibrillar Aβ injection, the step-through latency of rats was significantly shortened compared to that of the control group. The GFAP positive astrocytes were found surrounding amyloid deposition. Neuronal loss occurred in the pyramidal cell layer of CA1 region. The number of S100β positive cells in Aβ-treated group was significantly increased compared with that in the control group. After IL-1ra injection, the number of S100β positive cells was significantly decreased. Conclusion Intrahippocampal injection of Aβ25 - 35 could cause similar pathologic changes of Alzheimer＇s disease. Aβ 25- 35 was capable of up-regulating S100β expression in a dose-dependent manner. The injection of IL-1ra could attenuate the effect of Alton S100β expression.     

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交通事故中驾驶员反应时间对研究驾驶员可靠性、交通事故致因有着非常重要的意义。本文在调查问卷、驾驶员的三个主要静态指标（深度知觉、注意力集中能力、注意分配能力）的测量以及基于驾驶模拟器的驾驶员反应时间的测定基础上，利用线性回归对驾驶员的转向反应时间建模，并对模型的有效性进行了验证。发现在95﹪水平上，影响因素与因变量反应时间呈线性关系；预测合格率为79﹪，判断出驾驶员反应时间在受到一些心理因素、驾驶经验与年龄的影响外，外界随机因素的影响不可忽略。这种方法为研究驾驶员应急反应行为提供了一条有效途径。     

全反式维甲酸对糖尿病大鼠尿转化生长因子-β_1排泄率及肾小球病变的影响

目的观察全反式维甲酸(all-trans-retinoic acid,atRA)对链尿佐菌素(STZ)诱导的糖尿病大鼠早期肾小球病变的保护作用。方法20只雄性SD大鼠分糖尿病维甲酸治疗组、糖尿病对照组和正常对照组。糖尿病维甲酸治疗组每天给予全反式维甲酸10 mg/kg体质量皮下注射,共7 d(n=6)。检测尿蛋白和转化生长因子-β1(TGFβ1)的排泄率、血清、尿液及肾组织一氧化氮(NO)水平和肾脏病理变化。结果糖尿病对照组尿蛋白及TGFβ1排泄率、血清、尿液及肾组织NO水平和肾小球基质比例明显高于正常对照组,全反式维甲酸则减轻了这些变化。结论全反式维甲酸具有延缓糖尿病肾小球病变进展的作用,这种作用可能与抑制TGFβ1和NO的分泌有关。