尖锐湿疣患者外周血淋巴细胞凋亡调控蛋白的表达和血清中白细胞介素2水平的研究

为研究尖锐湿疣（CA）患者外周血淋巴细胞（PBLC）凋亡调控蛋白表达水平和血清中白介素2（IL－2）水平在CA免疫发病机制中的作用。采用流式细胞仪及间接免疫荧光素标记法和ELISA法，检测了60例不同病程CA患者PBLC凋亡调控蛋白Fas/Fas-L的表达水平和血清中IL－2水平。发现CA短病程组PBLC的Fas、Fas-L表达水平均明显高于健康对照组（P＜0.05)，而CA长病程组PBLC的Fas、Fas-L表达水平明显高于CA短病程组（P＜0.05)和健康对照组（P＜0.01)，短、长病程组CA患者血清IL－2的水平明显低于健康对照组（P＜0.01)，CA患者PBLC Fas/Fas-L表达水平与血清中IL－2的水平呈负相关（P＜0.01)。结果表明：CA患者PBLC有凋亡异常，并且与血清中IL－2的水平呈负相关，患者PBLC凋亡异常在CA的病程中可能起重要作用。     

Birth spacing patterns and correlates in Shaanxi, China

This study shows that most women in Shaanxi Province, China try to have their first birth as soon as possible after their first marriage, and that the length of the interval between marriage and first birth is strongly correlated with the woman's age at first marriage. The length of the second and third birth intervals and the likelihood of going on to have a second or third birth are strongly influenced by the sex composition of children already born, the survival time of the child initiating the interval, the duration of breastfeeding, and the woman's occupation. There is significant regional variation in the length of birth intervals and in the prevalence of second and third births in Shaanxi. The findings indicate that China's one-child policy is far from being universally accepted in Shaanxi, including its urban areas. The persistence of many social, economic, institutional, and cultural factors promoting high fertility poses many obstacles to further fertility decline.     

重症肌无力症134例放射治疗的疗效分析

本文回顾分析我院自1961年5月至1985年12月重症肌无力症134例主要采用胸腺放疗的结果。其中25例用深部经X线照射,109例~(60)Co放疗。随访时间2月至24年。完全缓鲜26例(19.5％),显著好转63例(47％),合计显效率为66.5％。56例仅接受放疗或同时服用抗胆碱酯酶剂,可以作为组内自身对照,证实放疗疗效较好。胸腺区或脾区放疗后患者血清nAchRab及淋巴细胞总数降低,具有抗淋巴细胞作用,能抑制自身免疫应答。如今放射治疗对MG已经不是经验性治疗,而是一种值得推荐的免疫调整治疗方法。本文初步提出治疗适应证。     

Down-regulation of Cardiac Bradykinin B2 Receptors and eNOs mRNA in Rats with Remnant Kidneys

Bradykinin,ani mportant substance in the de-velopment of cardiovascular diseases ,exerts its ac-tions through the activation of B1 or B2 receptors .B1 receptors are expressing mainly in pathologicalconditions and mediate inflammatory and pain-pro-ducing effects[1];B2 receptors(BKB2Rs) mediatemost of cardiovascular protective effects throughreleasing nitric oxide (NO) ,prostaglandins (PGs)and endothelium-derived hyperpolarizing factor(EDHF)[2]. The components for the generationand action …     

心律紊乱与心肌超微结构

对40例心律紊乱怀疑病毒性心肌炎(VMT)患者行心内膜心肌活检术(EMB)标本电镜进行超微结构观察,结果40例心律紊乱患者中,诊断为活动性心肌炎24例,早期扩张性心肌病8例,扩张性心肌病5例,心肌炎后遗症3例。显示电镜超微结构的检测对心肌病变的诊断率(40/40)为100％。提示了EMB对VMT诊断的可靠性和敏感性比较高。且证明EMB是一种安全、可靠、简易的方法,对VMT诊断可提供有价值的资料。     

高效液相色谱检测食品中挥发性亚硝胺的新方法

应用高效液相色谱检测食品中微量亚硝胺的新方法。该方法是样品的预处理用水蒸汽蒸馏、活性炭柱净化、浓缩,最后用高效液相测定。实验结果证明,本法样品预处理简单、快速、经济,色谱条件选择性好,用于二甲基亚硝胺测定时,其浓度—峰高呈良好的线性关系。仪器的灵敏度可达3.378×10~(-3)nmol、适合于现场普查和实验研究。     

A developmental influence of the N-methyl-D-aspartate receptor NR3A subunit on prepulse inhibition of startle.

BACKGROUND: The N-methyl-D-aspartate (NMDA) receptor is composed of various conformations of multiple subunits (including NR1, NR2A-D, and NR3A-B). Peak expression of the NR3A subunit occurs approximately 2-3 weeks postnatal, with low levels in adulthood. In the brain, the NR3A subunit is localized primarily in the amygdala, hippocampus, striatum, and cortex. These regions are involved in the modulation of prepulse inhibition of startle (PPI), an operational measure of sensorimotor gating that is modulated by NMDA receptors. NR3A reduces NMDA current in native neurons expressing NR1 and NR2 subunits and forms glycine receptors when expressed with NR1 in the absence of NR2 in both oocyte and mammalian expression systems. METHODS: To examine the role of NR3A in vivo, NR3A knockout (KO), and overexpressing transgenic mice were generated. Adult NR3A overexpressing mice exhibited normal PPI; PPI in NR3A KO mice was tested repeatedly from weaning through adulthood. RESULTS: Male NR3A KO mice exhibited an increase in PPI at 3 and 4 weeks postnatal, whereas female NR3A KO mice did not differ from their WT counterparts at any age tested. CONCLUSIONS: This sex-specific increase in PPI is consistent with the antagonistic role of the NR3A subunit in NMDA receptor function and with the observation that estrogen modulates NMDA receptor function.     

地尔硫卓对失血性休克犬血流动力学的影响

犬由股动脉放血，维持动脉压在５．３２～６．６５ｋＰａ之间９０分钟。休克期静脉输入地尔硫０．６ｍｇ／ｋｇ后再进行休克复苏，并观察１５０分钟。结果表明，地尔硫具有提高失血性休克犬的平均动脉压和改善心功能的作用。