我国健康成人血清中抗成人腹泻轮状病毒抗体调查

本文报告以未知血清作为第一抗体直接包被微量凹井板,用双抗体夹心ELISA法检测抗成人腹泻轮状病毒抗体,得到成功的结果。此法应用于检测从中国一些省市收集的1,380份健康成人血清中抗成人腹泻轮状病毒抗体,其中141份阳性,总阳性率为10.2%,各地的感染率不同。对25份阳性血清进行了阻断试验,结果是在阻断后的P/N比值全部低于阻断前的P/N比值。这25份阳性血清中有17份来自河北省迁安县一带农村,该地区在两年前曾发生成人流行性腹泻。西藏50份血清均阴性,海南岛50份血清中仅1份阳性。     

Association between cord blood IgE and genetic polymorphisms of interleukin-4, the β-subunit of the high-affinity receptor for IgE, lymphotoxin-α, and tumor Necrosis factor-α

High cord blood immunoglobulin E (cbIgE) is known to be associated with increased risks of atopic diseases in childhood. The relationship between genetic polymorphisms and high cbIgE has not been well documented. A cross-sectional study was conducted to assess the association between cbIgE and genetic polymorphisms of interleukin (IL)-4 -590C/T, the beta-subunit of the high-affinity receptor for IgE (FcepsilonRI-beta) E237G, lymphotoxin (LT)-alphaNcoI alleles, and tumor necrosis factor (TNF)-alpha -308G/A. A total of 320 mother-neonate pairs were recruited from four maternity hospitals from different locations of Taiwan. Cord blood was obtained and assayed for cbIgE. Polymerase chain reaction followed by restriction fragment length polymorphism was used to assess the genotypes. Three hundred pairs of mothers and neonates were included in the final analysis. Infants with IL-4 -590 C allele were found to have higher risk of elevated cbIgE (> or =0.35 IU/ml, 24.3%) (p = 0.004). After adjusting for gender, birth order, maternal age, and history of allergic disease in maternal and paternal families, odds ratios for CC and CT genotypes were 4.41 and 3.16 (95% confidence interval 0.78-22.67, and 1.66-6.13), respectively, using TT genotype as reference. The genotypes of FcepsilonRI-beta, LT-alpha, and TNF-alpha were not associated with cbIgE before or after the adjustment. Our finding suggested a significant association of cbIgE with genetic polymorphism of IL-4 -590C/T, but not with the genotypes of FcepsilonRI-beta, LT-alpha, and TNF-alpha.     

中药槐黄软膏治疗局部溃疡药效学实验研究

槐黄软膏是由槐角、地榆、黄芩、积壳、当归、防风等药物组成的治疗痔疮的良药,为了为临床用药提供实验依据,我们对槐黄软膏的体外抗菌活性及对局部溃疡的作用进行了实验研究,现报告如下。1材料与方法1.1药物槐黄软膏由山东中医药大学制备(批号:20020801),赋形剂为凡士林。马应龙麝香痔疮膏由武汉马应龙药业集团股份有限公司出品(批号:010832)。1.2动物家兔购于山东大学实验动物中心。1.3实验菌株金黄色葡萄球菌5株(010428,010416,010426,011223,011223)、铜绿假单孢菌5株(010408,010421,010423,010427,010430)、大肠杆菌5株(010411,010420,…     

美国OHMEDA麻醉机故障分析与排除

故障1故障现象:病人呼吸回路漏气。可能原因:1.手控时APL阀未关闭,2.钠石灰罐安装不严密,3.螺纹管损坏或接头松动,4.活瓣罩未拧紧,5.手动/自动转换开关失灵。解决方法:1.关闭半紧闭APL阀,2.重新安装半紧闭APL阀,3.更换新管或重新安装管路,4.重新拧紧活瓣罩。故障2故障现象:呼气     

自体表皮细胞培养与异体真皮组合应用研究

严重烧伤病人皮肤修复中主要未解决的问题是真皮的替代。动物实验结果表明，异体皮移植后５天，用自体培养表皮细胞膜片覆盖真皮床，１４天后复合皮成活率是８４．６％±２．４％。组织学检查证实表皮已形成了复层结构，可见基底层、颗粒层和角质层。临床应用中，异体皮移植后１０天，去除异体表皮覆盖病人的自体培养表皮，３５天后未见排斥征象，异体真皮促进了培养表皮的分层、成熟和完整，组织学检查证实表皮细胞的边缘清楚，已分化形成颗粒层和角质层，真皮多细胞，已血管化，但表皮嵴缺乏。     

酶组化显示睾丸LDH－X方法的再探讨

对小鼠睾丸冰冻切片ＬＤＨ－Ｘ的显示方法作了进一步探讨。实验表明，以Ｌ－２－羟基－３－甲基戊酸（ＨＭＶ）为特异性底物，能相当有效地显示睾丸ＬＤＨ－Ｘ的分布，且该底物的配制方法简便易行。在显示ＬＤＨ－Ｘ的孵育液中采用萘酚蓝（ＮＢ）作中间递电子体较吩嗪甲基硫酸酯更具优越性。     

Changes of circulating TNF and its effects on Pseudomonas aeruginosa septic shock in rabbits

Itiswellknownthatcertaincytokinesplayapivotalroleinthedevelopmentoftraumaandshock.Tumornecrosisfactor(TNF)isapolypep-tiedcytokinesynthesizedinmonocytesandmacrophagesinresponsetolipopolysaccharide(LPS)stimulation-TherelationshipbetweenTNFandendotoxic-septicshockbecomesafocusoftheresearchofshockmediators[1'2].Alargeamountofexperimentalandclinicaldata[3-9JsuggestthatTNFplaysanimportantroleinthepathogenesisofendotoxic-septicshockbuttheprecisemechanismandtherelationshipofTNFtoshockseverityrem…     

老年男性心肌缺血患者心率变异分析（附67例报告）

采用正常搏动ＲＲ间期的标准差（ＳＤ）及心率变异指数（ＨＲＶ ｉｎｄｅｘ）作为指标，分析６７例老年男性心肌缺血患者的心率变异，并与正常老年男性组及正常青壮年男性组进行了对比，发现前组的ＲＲ间期ＳＤ、ＨＲＶｉｎｄｅｘ均明显低于后两组，其结果有显著性差异（Ｐ均〈０．０１）。提示心肌缺血可破坏交感与迷走神经的均衡性，造成心率变异降低。     

NO对兔局灶脑缺血脑水肿和脑梗塞灶的影响

本文在兔MCAO局灶脑缺血模型基础上,利用外源性一氧化氮(NO)前体物质L-精氨酸和NOS抑制剂L-NNA研究NO对脑缺血后脑水肿和脑梗塞的影响。NZW兔42只随机分为7组,每组6只,计对照组、假手术组、MCAO组、MCAO+NS组、MCAO+L-Arg组、MCAO+D-Arg组及MCAO+L-Arg+L-NNA组。结果提示:与单纯MCAO组比较,L-Arg组的脑组织H_2O、Na~+、Ca~(2+)含量明显下降(P<0.01),脑梗塞灶亦明显缩小(P<0.01)。从而显示L-Arg系通过产生NO促使血管舒张而减轻脑水肿和缩小梗塞灶,为临床改进脑缺血的治疗提供依据。