Expression of Functional Molecules in Non-Hodgkin's Lymphoma

It is well known that non Hodgkin's lymphoma (NHL) cells express various antigens which are normally involved in a variety of functions. In addition, NHL is diverse in its proliferative capacity. To investigate the relation between these factors and the clinical picture, 45 cases of NHL were studied by immunohistochemistry using snap-frozen materials obtained before therapy. Reactivities with 27 monoclonal antibodies were examined and the results were correlated with clinical findings. The expression of surface μ and CAM-1 in B-NHLs and CD25 in T-NHLs were significantly associated with bone marrow involvement. B-NHLs without expression of CD21(B2) and T-NHLs with CD25 were seen more frequently in cases with a LDH value of over 500 units/ml. The positivity rate of Ki-67 on B-NHLs was correlated with serum LDH value, NHL histologic classification, and overall survival. These data indicate that immunophenotyping and determination of the proliferative capacity of NHL are of value not only for confirmation of the histopathologic classification of the tumor but also for assessment of clinical behavior.     

KMG03粉针剂对大鼠实验性急性心肌缺血的保护作用

采用结扎大鼠冠脉造成急性心肌缺血模型。观察KMG03粉针剂的抗心肌缺血作用。结果：KMG03粉针剂50mg/kg和100mg/kg对大鼠实验性急性心肌缺血均有一定程度的保护作用。在改善心电图S——T段的上移、降低血清CPK,LDH方法两个剂量组均有显著作用。在缩小心肌塞范围方面,以100mg/kg组为明显,KMG03粉针剂和丹参均能保护超氧化物岐化酶活性,显著降低丙二醛含量,还能显著增加缺血心肌前列环素合成。结果表明：KMG03粉针剂对心肌缺血的保护作用与抗脂质过氧化作用有关,其促进前列环素合成作用可能与其抗心肌缺血有关。     

人参Ｒb组皂苷对犬实验性心肌梗死的保护作用

目的：研究人参Ｒb组皂苷对犬实验性心肌缺血的保护作用。方法：通过结工冠状动脉前降支（ＬＤＡ）产生急性心肌梗死模型,从心肌梗死面积（ＭＩＳ）及血清酶学变化观察人参Ｒb组皂苷的抗心肌缺血作用,并从心肌代谢及自由基损伤等角度分析其可能的作用机制。结果人参Ｒb组皂苷２５,５０mg/kg经十二指肠给药,对ＬＡＤ急悸阻断６h犬,能明显缩小ＭＩＳ,降低血清肌酸磷酸激酶（ＣＫ）及乳酸脱氢酶（ＬＤＨ）活性,亦能明显降低血清游离脂肪酸（ＦＦＡ）及过氧化脂质（ＬＰＯ）含量,提高超氧化物歧化酶（ＳＯＤ）活性。结论：人参Ｒb组皂苷对急性缺血心肌产生明显保护作用,作用机制可能与其纠正心肌缺血时ＦＦＡ代谢紊乱及对抗氧自由基引发的脂质过氧化反应,增强体内抗氧化酶活性等有关。     

乳酸脱氢酶同工酶LD1/LD2比值测定在急性心肌梗塞诊断中的意义

目的与方法:用琼脂凝胶电泳法测定乳酸脱氢酶(LDH)同工酶LD1/LD2比值.结果:表明,急性心肌梗塞(AMI)组44例平均1.0464士0.2947,非心肌梗塞组35例平均0.7690±0.1333,二者比较差异显著.首次血清的敏感性为47.7%(21/44),特异性为97.1%(34/35).并与发病后不同时间LDH.CK-MB,GOT做了比较,探讨其对AMI的诊断价值.结论:本文亦表明LDH同工酶的测定可弥补心电图对AMI诊断上的不足.     

Novel bioassay based on acetylcholinesterase and lactate dehydrogenase activities to evaluate the toxicity of chemicals to soil isopods

This study developed a bioassay with the isopod Porcellio dilatatus based on the activity of the enzymes acetylcholinesterase (AChE) and lactate dehydrogenase (LDH). The in vivo effects of the insecticides parathion-ethyl and endosulfan-sulfate on AChE and LDH activities of P. dilatatus under laboratory conditions were investigated. The route of uptake of the pesticides was through the food (alder leaves). Isopods were exposed to a wide range of concentrations of parathion or endosulfan (0.1, 1, 10, 25, 50, 100, 250, and 500 microg/g of food) for 21 days. After this period, the activity of AChE and LDH was determined. Parathion induced significant depression of both AChE and LDH activities. Animals fed with endosulfan-contaminated food exhibited lower LDH activities than control animals, while AChE activity was similar in all treatments. The results of the present investigation suggest that the isopod. P. dilatatus is a suitable species for use in toxicity tests and indicate that the enzymes AChE and LDH could be used as effect criteria both in laboratory and in field studies with this species.     

竹节人参提取物对实验性心肌缺血的保护作用

用垂体后叶素造成小鼠急性心肌缺血,检测其血清、心肌乳酸脱氢酶（ＬＤＨ）和血浆、心肌丙二醛（ＭＤＡ）含量的变化,研究竹节人参提取物对心肌缺血的保护作用。结果：竹节人参提取物可明显地减少缺血小鼠心肌ＬＤＨ漏出,降低心肌ＭＤＡ含量。表明竹节人参提取物对实验性心肌缺血损伤有很好的保护作用。并对其保护作用的机理从抗再灌注自由基损伤角度进行了初步探讨。     

用LDH释放法判断细胞病变程度确定干扰素生物活性

目的：应用ＬＤＨ释放法测定干扰素生物活性。方法：通过检测ＷＩＳＨ细胞裂解后释放出的ＬＤＨ活性判断细胞病变的程度,确定干扰素效价。对ＬＤＨ释放法进行改进,与结晶紫染色法和ＭＴＴ比色法进行灵敏度、重复性和相关性比较。结果和结论：该法减少了实验步骤和时间,成本低,敏感性高,重复性好,与其他方法所测结果无显著差异,简便实用,优于结晶紫染色法和ＭＴＴ比色法。     

急性白血病血清乳酸脱氢酶及α-羟丁酸脱氢酶检测的意义

目的：探讨血清乳酸脱氢酶（LDH）和α-羟丁酸脱氢酶（HBDH）的变化与急性白血病患者疗效关系。方法：观察45名急性白血病人血清LDH和HBDH变化。结果：急性白血病人血清LDH和HBDH显著升高,病情缓解后可降低。LDH和HBDH值与外周血幼稚细胞数呈正相关。结论：血清LDH和HBDH是判定急性白血病疗效的有效指标。     

长期饮酒对男性生殖系统功能影响

目的探讨饮酒对男性生殖系统的损害及其机理。方法选择45名男性饮酒者和9名慢性酒精中毒者为研究对象,以15名不吸烟不接触毒物的男性为对照组。结果长期大量饮酒和酒精中毒者血清中T和CS水平下降,而LH和FSH水平升高;精浆和精子中LDH,LDH-x和G-6PD活力下降,以LDH-x下降为敏感;精子数量和活动精子年均降低,精子畸形率及异常精液检出率均升高。上述各指标与对照组比较差异均有高度显著性（P＜0.01）。结论长期饮酒可损害男性生殖系统功能。     

厚朴酚对脑缺血的保护作用

目的　研究厚朴酚对脑缺血的保护作用。方法　采用小鼠常压耐缺氧实验 ,测定小鼠氧耗量及存活时间 ;小鼠双侧颈总动脉结扎引起急性不完全脑缺血模型 ,测定小鼠死亡时间 ;大鼠大脑中动脉阻塞法 (MCAO)造成局灶性脑缺血模型 ,评价动物行为功能 ,测定脑梗死范围及脑组织中SOD、MDA及LDH的含量 ,并进行病理学组织检查。结果　厚朴酚能剂量依赖性地延长小鼠缺氧缺血的存活时间 ;改善大鼠脑缺血造成的行为缺陷 ,提高脑组织中SOD和LDH活性 ,减少MDA含量 ,缩小梗死范围 ,降低脑含水量。病理学组织检查显示 ,厚朴酚能改善脑缺血造成的大鼠神经细胞的损伤 ,减少组织坏死。结论　厚朴酚对脑缺血有保护作用 ,这可能与其抗自由基作用有关