Effects of systemic domestic recombinant human erythropoietin on HIF-1α expression in the retina in a rabbit model of acute high intraocular pressure

Objective To observe the expression of hypoxia inducible faetor-1α (HIF-1α) in the retina of rabbits with acute high intraocular pressure and to investigate the mechanism of systemic domestic recombinant human erythropoietin (rhEPO) protecting the retina from ischemia-reperfusion injury. Methods First, control group and model group were established in rabbit eyes. The acute high intraocular pressure model was established by saline perfusion into anterior chamber, and then hypodermic injection of domestic rhEPO was made. HIF-1α protein in the retina was observed by immunohistochemical staining method on days 1, 3, 7 and 14 after retinal ischemla-reperfusion, respectively. Results No cells with HIF-la positive expression were observed in the retina of the control group. Ceils with HIF-1α positive expression in the model group outnumbered those in the control group (P < 0. 01). The resemblance pattern occurred in EPO group but its degree was slightly greater than that in the model group from day 3 after ischemia-reperfusion (P<0.05). Conclusion Domestic rhEPO can down-regulate the expression of HIF-1α in the retina with acute high intraocular pressure, which may be one of the mechanisms that rhEPO protects the retina from ischemia-reperfusion injury.     

急性心肌梗死患者内皮炎症与无复流及冠脉病变严重程度的相关性

目的研究急性心肌梗死(AMI)患者内皮炎症与无复流及冠脉病变严重程度的相关性。方法入选行经皮冠状动脉介入(PCI)治疗的AMI患者120例,其中术中出现无复流的患者40例为病例组,未出现无复流的AMI患者80例作为对照组。无复流组又根据冠状动脉造影结果分为单支病变组14例、两支病变组10例和三支病变组16例。分别采用流式细胞术和ELISA方法对上述患者术后即刻循环血内皮微粒(EMPs)及可溶性细胞间粘附分子-1(sICAM-1)水平进行测定。结果病例组PCI术后即刻循环血EMPs及sICAM-1水平均高于对照组,差异具有统计学意义。病例组EMPs和sICAM-1曲线下面积分别为0.755和0.701,表明EMPs和sICAM-1水平与AMI患者PCI术后发生无复流具有良好的相关性。冠脉病变Gensini积分和EMPs随病变支数的增加呈上升趋势,且EMPs水平与Gensini积分呈正相关。结论 AMI患者循环血EMPs及sICAM-1水平能够较好地预测无复流的发生,并对冠脉病变的严重程度也有较好的预测价值。     

二维三七桂利嗪胶囊对急性脑缺血的保护作用

目的观察二维三七桂利嗪胶囊对于急性脑缺血的影响。方法ICR小鼠分别用420 mg/kg、210 mg/kg、105 mg/kg的二维三七桂利嗪胶囊灌胃10 d,观察断头后小鼠的喘息时间;SD大鼠分别用292 mg/kg、146 mg/kg、73 mg/kg的二维三七桂利嗪胶囊灌胃10 d,线栓法制备大鼠大脑中动脉栓塞模型,然后进行神经行为指标评分、脑梗死范围测定和病理学观察。结果二维三七桂利嗪胶囊各剂量组均能延长小鼠断头后的喘息时间,缩小局灶性脑缺血大鼠脑梗死范围,改善神经症状,减轻光镜下脑组织缺血性损伤。结论二维三七桂利嗪胶囊对急性脑缺血损伤具有保护作用。     

41例老年人急性心肌梗塞临床特征分析

通过对４１例老年人急性心肌梗塞与３２例成年人急性心急性心肌梗塞的临床分析比较，进一步提高对老年患者临床特征的认识。     

急性白血病多药耐药蛋白的异常表达及其与临床疗效和预后的关系

目的研究多药耐药蛋白P-糖蛋白(PGP)、多药耐药相关蛋白1(MRP1)、谷胱甘肽-硫-转移酶π(GST-π)和拓扑异构酶Ⅱα(TOPOⅡα)在初发急性白血病(AL)患者中的表达,并探讨其与疗效及预后之间的关系。方法采用免疫组化SABC法检测了PGP、MRP1、GST-π、TOPOⅡα在30例AL患者白血病细胞中的表达情况。结果PGP、MRP1、GST-π、TOPOⅡα在初发AL中表达的阳性率分别为23.33%、36.6%、60%和43.33%;PGP、MRP1阳性组的完全缓解(CR)率均明显低于阴性组(P<0.01);TOPOⅡα阳性组的CR率为92.31%,高于阴性组的58.82%(P<0.05);GST-π阳性组的CR率与阴性组的CR率之间无统计学意义(P>0.05)。结论单一PGP、MRP1的表达升高及TOPOⅡα的表达降低与AL的治疗反应差、预后不良有明显的相关性;联合多个多药耐药蛋白能够更准确地预测AL的耐药和预后。     

THE EFFECT OF ACUTE MYOCARDIUM ISCHEMIC ON HEART FUNCTION OF PREGNANCY RAT

In recent years,extensive research is underwayto investigate characteristics of coronary heart dis-ease(CHD)among women.Epidemiology has in-dicatedthat sex difference has an obvious presenceinCHD incidence and mortality.Womenprior tomenopause have a muchlower presence inincidenceof CHD[1-2].Whilethe incidence and mortality raterise significantly among post menopausal women orthose who have ovary removed,si milar to that ofsame-age men.It showed that the estrogenlevel hasa close relationshi…     

保肝解毒颗粒对四环素致急性肝损伤小鼠肝细胞超微结构的立体计量学分析

目的探讨保肝解毒颗粒对四环素致急性肝损伤小鼠肝细胞超微结构的影响。方法60只小鼠随机分为模型组、保肝解毒颗粒大、中、小剂量组、甘利欣对照组和空白对照组,分别以相应剂量药物灌胃5 d,然后以四环素灌胃造模。对肝组织进行电镜观察,并对肝细胞超微结构进行立体计量学测定分析。结果模型组线粒体、异染色质Vv及线粒体、内质网、高尔基体δm明显降低,常染色质和脂滴Vv明显升高;保肝解毒颗粒可明显升高线粒体、异染色质Vv及线粒体、内质网、高尔基体δm,降低常染色质和脂滴Vv。结论保肝解毒颗粒可使肝细胞超微结构变化显著改善,具有较好的保肝作用。     

舒肝丸对大鼠急性肝损伤的保护作用及对胆汁分泌的影响

目的　研究舒肝丸对肝损伤的保护作用 ,以及对胆汁分泌的影响。方法　用四氯化碳致大鼠急性肝损伤 ,以生化指标和病理变化评价舒肝丸的药物作用。以胆总管插管引流法观察药物对胆汁分泌的影响。结果　与模型对照组比较 ,舒肝丸给药组AST、ALT及胆红素指标明显下降 ,白蛋白与球蛋白比值 (A/G)倒置明显改善 ;病理切片显示各给药组与病理模型组比较 ,肝组织损伤明显减轻。舒肝丸给药前后对胆汁分泌量无明显影响。结论　舒肝丸对四氯化碳所致的大鼠急性肝损伤有保护作用 ,而对胆汁分泌无影响     

急性颅脑损伤患者血清和脑脊液酶活性的改变

本文对80例急性颅脑损伤患者血清和脑脊液CPK、LDH、GOT以及LAP活性作了测定。结果表明,急性颅脑损伤患者后当天和伤后第1天血清和脑脊液CPK、LDH活性以及脑脊液GOT活性显著升高(P<0.05),而伤后当天的血清和脑脊液酶活性与急性颅脑损伤的脑损伤程度和患者预后则无明显相关(P>0.05)。故我们认为,外伤后早期血清和脑脊液CPK、LDH活性以及脑脊液GOT活性可作为急性颅脑损伤诊断的一项辅助指标,至于脑脊液酶活性对判断急性颅脑损伤的脑损伤程度和患者预后的价值尚待继续探讨。     

酸枣仁总皂苷对大鼠急性心肌缺血的保护作用

目的研究酸枣仁总皂苷对大鼠急性心肌缺血的保护作用,以及对心肌梗死面积的影响。方法用结扎冠状动脉左前降支(LAD)致大鼠急性心肌缺血,以心肌梗死面积和心电图(ECG)变化评价酸枣仁总皂苷的药物作用。结果与模型对照组比较,酸枣仁总皂苷给药组可显著缩小心肌梗死面积;ECG显示各给药组与病理模型组比较心率、S-T段、T波值均有明显降低。结论预防性给予酸枣仁总皂苷可显著缩小LAD结扎所致大鼠心肌梗死面积,具有保护心肌的作用。