计算机辅助精液分析男性不育患者精子运动参数与精子活力的相关性

目的探讨计算机辅助精液分析精子运动参数在评价男性不育患者精子活力中的价值。方法按《WHO人类精液及精子-宫颈黏液相互作用实验检验手册》标准,采用国产WLJY-9000伟力彩色精子质量检测系统对276例男性不育患者的精液进行平均直线运动速度、平均曲线运动速度、运动的前向性、运动的直线性、运动的摆动性、平均路径速度、精子活力及分级等进行检测并分析其相关性。结果276名男性不育患者的平均精子活力为（48.93±19.10）%,分级为A级（32.11±17.25）%、B级（17.03±8.91）%、C级（10.14±5.99）%。平均直线运动速度、平均曲线运动速度、运动的前向性、运动的直线性、运动的摆动性、平均路径速度与精子活力的相关系数分别为0.60（P〈0.01）、0.59（P〈0.01）、0.51（P〈0.01）、0.55（P〈0.01）、0.52（P〈0.01）、0.67（P〈0.01）。结论计算机辅助精液分析精子运动参数平均直线运动速度、平均曲线运动速度、平均路径速度是反映精子活力的有效指标,精子运动参数对男性不育的诊断和生育能力的评估具有实用意义。     

护理科研设计应重视人性化

护理科学研究的对象是人，并且是一批特殊的人群，他们不但承受着躯体的痛苦，而且存在多种心理健康问题。护理科研设计是护理科学研究中非常重要的环节，是对科学研究具体内容和方法的设想和安排，所以护理科研设计应突出人性化，以人为本，以减轻病人痛苦、促进早日康复为目的。     

聚合酶链反应在鼠疫菌检测中的应用 研究

本文采用聚合酶链反应（ＰＣＲ）技术，通过扩增鼠疫菌９．５ｋｂ质粒ｐｌａ基础上一个４７８ｂｌ片段，用于鼠疫菌检测，被试的４５株鼠疫菌扩增产物经琼脂糖凝胶电泳分析均呈现单一ＤＮＡ带，其分子量大小与预期结果符合。而假结核菌和一株缺６ＭＤ质粒鼠疫菌未见扩增带，洽部实验可在４ｈ内完成。本法具有快速、特异、敏感等优点，可用于不同生态型鼠疫菌的快速诊断和流行病学研究．     

抗真菌剂三氮唑含硫化合物的合成

合成了１３个三氮唑含硫化合物，均为未见文献报道的新化合物，对所合成的化合物，选择三种常见真菌进行体外最低抑菌浓度（ＭＩＣ）的测定，结果表明它们均有较好的抗真菌活性，有些化合物抑菌活性极高，有进一步研究和开发前景。     

大鼠脊髓损伤后白细胞介素-1β、肿瘤坏死因子-α基因表达的变化

目的 探讨大鼠脊髓损伤后白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)mRNA表达的变化规律。方法SD大鼠42只,随机分为7组,采用改良Allen's脊髓损伤打击模型,以逆转录-聚合酶链反应(RT-PCR)法测定伤段脊髓组织IL-1β、TNF-αmRNA的表达情况。结果 正常脊髓组织内存在IL-1β、TNF-αmRNA的表达,脊髓损伤后IL-1β、TNF-αmRNA表达迅速增强,在伤后1h达到高峰。结论 IL-1β、TNF-α存在于正常的脊髓组织内,脊髓损伤后IL-1β、TNF-α表达迅速增强,提示协同参与了继发性脊髓损伤过程,并可能是损伤性因素。     

Ultrastructural observation of rat thymus tissue with coronavirus infection]

OBJECTIVE: To investigate the ultrastructure of rat thymus tissues with rat coronavirus (RCV) infection for clarifying the mechanism responsible for the morphological changes of the cells infected by RCV. METHODS: Routine electron microscopy was performed for observing RCV-infected rat thymus tissues. RESULTS: Following RCV infection, endoplasmic reticulum (ER) pools of different dimensions were observed in the cytoplasm of the thymic epithelial reticular cells, merging subsequently with each other into larger ER lakes filled with particles of mature RCV, or viral inclusion bodies. After germination on the ER membrane, the viruses entered the matrix of the ER lake to mature and were eventually excreted to the extracellular space. The RCV particles were spherical in shape with a diameter of 100-130 nm and two distinct membranes, the outer one being the envelope and the inner one the nuclear capsid to enclose the viroplasm. Between the envelop and nuclear capsid was a electron-lucent middle layer comprising one to two thin membranous structures. Large quantity of short spike-like projections starting from the nucleus capsid penetrated the middle layer and the envelop to reach the glycoprotein coat and formed a corona-like structure. Mature RCV particles were distributed around the ER pools, cytoplasm, and intercellular space, and the RCVs in the endosome/lysosome were devoid of the envelop and nuclear capsid. CONCLUSION: The ER lakes are involved in the maturation of the viruses, and the envelop and nuclear capsid of the virus entering the cells from extracellular space are removed and degraded in the endosome/lysosome. Replications of virus occurs in plasma of the thymic epithelial reticular cells, and no RCV can be detected in the thymocytes.     

Inhibition on Telomerase Activity and Cytotoxic Effects by Cisplatin in Cultured Human Choroidal Melanoma Cells

Purpose: To study the changes of telomerase activity and cytotoxic effects by Cisplatin; cis-dichlorodiamine platinum (CDDP) in cultured human choroidal melanoma. Material and Methods: The primary cultured human choroidal melanoma cells were cultured in the presence and absence of CDDP with different concentration and time respectively. The toxic effects were evaluated by MTT and the level of telormarse was detected by PCR-ELISA assay. And the relationship between telomerase activity and cytotoxic effects were analyzed by a correlation analysis.Results: Following the increase of the concentration and the time of CDDP, gradually repressed telomerase activity was detected in cultured cells. Meanwhile, the restrain rate of the cells increased. The telomerase activity at 24h and 1μg/ml was repressed significantly compared with the control cells. However, the appearance of cell death lagged behind the decreasing of telomerase.Conclusions: CDDP is an effective telomerase inhibitor in cultured choroidal melan     

体外循环对紫绀型先天性心脏病病人血小板的影响

检测１８例体外循环紫绀型先天性心脏病手术病人术前，术中及术后３，８天外周血血小数量和 附，聚集功能，探讨体外循环对血小板质和量的影响。结果显示，血小板数量和聚集功能在术后显著下降并持续至术后８天，血小板粘附功能显著下降，术后３天恢复。提示体外循环气血界面，人工材料非内皮表面可导致血小板激活，粘附，聚集面在量消耗，数量和功能显著下降。     

卵巢癌细胞多种细胞因子基因表达的研究

本文应用RT-PCR方法,检测5例刚分离的晚期上皮性卵巢癌患者肿瘤细胞和3例卵巢痛患者腹水中肿瘤细胞IL-2、IL-2R、TNF-a,IL-6、TGF-p、IL-10等细胞因子基因的表达,用免疫学方法检测卵巢癌细胞上清液中IL-6活性。结果发现:卵巢癌肿瘤细胞表达IL-6mRNA和抑制性细胞因子TGF-p、IL-10。腹水中存在较多量lL-6可能来自肿瘤细胞。     

费氏艾美尔球虫（E.ferrisi）某些生物学特性的研究

采用从自然感染球虫的小鼠粪便中分离的单卵囊接种小鼠获得成功，观察了此种球虫的卵囊形态，孢子化时间，潜隐期和寄生部位等，确定此球虫为费氏艾美尔球虫。为进行费氏艾美尔球虫病的流行病学调查和防治提供了依据。