575名新疆汉族青年学生手长、掌长与身高的关系

目的：研究新疆汉族青年手长、掌长与身高的关系，为人类学、法医学提供参考，同时为中国人体质调查积累资料。方法：应用Ｈｒｄｌｉｃａｓ标准和我国普遍采用的方法测量了５７５名（男２７０名，女３０５名）１８～２４岁汉族青年学生的手长、掌长和身高，并将原始数据进行医学统计学处理。结果：按年龄组和性别组计算出各组手长、掌长和身高的均值，身高与手长、掌长的比值。并提出由手长、掌长推算身高的简单公式（身高＝手长×比值，身高＝掌长×比值）和回归方程（身高＝回归系数×手长＋截距，身高＝回归系数×掌长＋截距）。结论：手长、掌长和身高各组性差有显著性（Ｐ＜０．０１）；由手长、掌长推算身高的简单公式和回归方程成立（Ｐ＜０．０５）。     

增殖细胞核抗原在口腔鳞状细胞癌中的表达

采用鼠抗ＰＣＮＡ单克隆抗体，ＡＢＣ法，对１１例正常口腔粘膜及２９例口腔鳞癌进行了染色。结果表明：正常粘膜仅在基底层中有少量的ＰＣＮＡ阳性细胞，其阳性分级为１级。而鳞癌阳性分级主要是３～４级，随着组织学分级的升高，ＰＣＮＡ阳性表达率也相应增高。经统计学分析，正常组织与鳞癌之间及鳞癌各级均有非常显著差异（Ｐ＜００１）。提示：ＰＣＮＡ的表达与口腔鳞癌组织学分级有关。     

活化血小板葡萄糖摄取及血小板膜整合素对其的影响

目的 :了解活化血小板葡萄糖摄取过程及血小板膜整合素对其影响 ,探讨整合素与血小板能量代谢的关系 ,旨在研究血小板能量代谢涉及的信号传导 ,并为目前临床应用血小板膜糖蛋白Ⅱb/Ⅲa(GPⅡb/Ⅲa)单抗抗血小板活化提供新的理论依据。方法 :用液态闪烁计数方法检测在血小板膜糖蛋白Ⅱb/Ⅲa单抗 10E5及血小板整合素αυβ3 单抗 6 0 9干预与否情况下凝血酶激活后血小板摄取氚标 2 脱氧葡萄糖 ([3 H]2 DG)率。结果 :在生理浓度范围内活化血小板 [3 H]2 DG摄取率较静息时明显升高 ,单抗 10E5可充分阻断活化血小板葡萄糖摄取 ,单抗 6 0 9可部分阻断。结论 :整合素家族单抗可抑制血小板激活后葡萄糖摄取 ,提示其可能参与血小板能量代谢信号传导过程 ,并可能以GPⅡb/Ⅲa为主     

控制性降压结合急性高容血液稀释在脑膜瘤手术中的应用

目的　观察控制性降压结合急性高容血液稀释 (AHH)对脑膜瘤手术的安全性及减少出血量和术后血红蛋白 (Hb)、红细胞比积 (Hct)的影响。　方法　择期脑膜瘤手术病人 2 0例 ,随机分成控制性降压结合AHH组 (Ⅰ组 ,n =10 )和对照组 (Ⅱ组 ,n =10 ) ,两组均采用气管内全麻。Ⅰ组病人于气管插管后手术开始前完成AHH并进行控制性降压。比较两组病人术中出血量、输血量和术后Hb、Hct变化。　结果　Ⅰ组病人术中平均出血量 (5 44± 92 )ml ,比Ⅱ组病人的 (10 72± 182 )ml减少 49 7% ;Ⅱ组病人平均输血量 (62 0± 112 )ml ,Ⅰ组病人则完全避免输异体血。两组病人术毕均有轻度贫血 ,但仍在安全水平范围内。　结论　控制性降压结合急性高容血液稀释可安全应用于脑膜瘤手术 ,对有指征病人的使用可避免术中输异体血     

Effects of hammerhead ribozyme (RCP) on HBV P gene in vitro

Ｅｆｆｅｃｔｓｏｆｈａｍｍｅｒｈｅａｄｒｉｂｏｚｙｍｅ（ＲＣＰ）ｏｎＨＢＶＰｇｅｎｅｉｎｖｉｔｒｏＧａｎＬｉｘｉａ（甘立霞），ＷａｎｇＰｉｎｇ（王平），ＺｈｕＸｉｈｕａ（朱锡华），ＤｏｎｇＹａｎｌｉｎ（董燕麟），ＨｏｕＹｕｎｄｅ（侯云德）（Ｄｅｐａｒ...     

参加新婚教育人群对紧急避孕的知识、态度和实践

为探讨新婚前后人群对避孕方法(特别是紧急避孕方法)的知识、态度和使用以及新婚前后人群对紧急避孕的需求及对推广EC的意愿的建议。采用描述性流行病学研究方法,以郑州市新婚学校为研究现场,直接收集第一手数据。采用EPI INF6.04软件包,和SPSS7.5 FOR WINDOW95软件包,进行数据处理、统计与分析。统计分析的主要指标有:频数分布,单因素分析,logistic多元回归分析等。结果平均年龄26.41岁,女性占49.4％。在第一次同房时,仅有46.4％的人使用过避孕方法。第一次同房时最常用的避孕方法是避孕套(76.1％)。在女性应答者中,25岁以下开始同房者占76.6％,有9.3％的人有过人工流产史。88.2％的人每周有1～6次同房。有43.2％的人听说过EC方法,有35.9％的人听说过紧急避孕片,有29.9％的人知道使用EC片有时间限制,有24.7％的人听说过上环可作为紧急避孕方法,有17.4％的人知道上环紧急避孕方法有时间限制。仅有12.9％的人使用过某种事后避孕方法,其中有事后3天内使用者占82.0％。92.6％的人赞成开展EC教育。73.7％的人认为,应在未婚青少年中开展EC教育。80.7％的人认为,在本单位进行EC教育是可行的。应答者认为,最易的接受的EC教育形式依次为:阅读材料(40.4％),录相(20.6％)和讲课(15.7％)。认为EC的最可靠的信息来源     

Th17/Treg细胞免疫平衡的相关调控机制研究进展

免疫系统可识别、抵抗病原微生物及清除体内异常分裂的细胞,平衡的免疫系统对维持正常的机体反应活动至关重要。人体内的多种细胞都可参与维持免疫稳态,其中辅助性T淋巴细胞17（Th17）和调节性T淋巴细胞（Treg）发挥着重要作用,失衡的免疫系统可致多种免疫性疾病的发生。Th17/Treg细胞平衡受细胞因子、代谢、肠道微生态及翻译后修饰等多种机制调控,该文通过总结相关机制为免疫性疾病治疗提供新思路和策略。     

Generation and comparative analysis of approximately 3.3 Mb of mouse genomic sequence orthologous to the region of human chromosome 7q11.23 implicated in Williams syndrome.

Williams syndrome is a complex developmental disorder that results from the heterozygous deletion of a approximately 1.6-Mb segment of human chromosome 7q11.23. These deletions are mediated by large (approximately 300 kb) duplicated blocks of DNA of near-identical sequence. Previously, we showed that the orthologous region of the mouse genome is devoid of such duplicated segments. Here, we extend our studies to include the generation of approximately 3.3 Mb of genomic sequence from the mouse Williams syndrome region, of which just over 1.4 Mb is finished to high accuracy. Comparative analyses of the mouse and human sequences within and immediately flanking the interval commonly deleted in Williams syndrome have facilitated the identification of nine previously unreported genes, provided detailed sequence-based information regarding 30 genes residing in the region, and revealed a number of potentially interesting conserved noncoding sequences. Finally, to facilitate comparative sequence analysis, we implemented several enhancements to the program, including the addition of links from annotated features within a generated percent-identity plot to specific records in public databases. Taken together, the results reported here provide an important comparative sequence resource that should catalyze additional studies of Williams syndrome, including those that aim to characterize genes within the commonly deleted interval and to develop mouse models of the disorder.     

Gamma delta T cells in rhesus monkeys and their response to simian immunodeficiency virus (SIV) infection.

The principal cause of IL-2 deficiency, a common feature of both murine lupus and human SLE, remains obscure. Recent studies of our own as well as others have shown that dehydroepiandrosterone (DHEA), an intermediate compound in testosterone synthesis, significantly up-regulates IL-2 production of T cells, and that administration of exogenous DHEA or IL-2 via a vaccinia construct to murine lupus dramatically reverses their clinical autoimmune diseases. Thus, we have examined serum levels of DHEA in patients with SLE to test whether abnormal DHEA activity is associated with IL-2 deficiency of the patients. We found that nearly all of the patients examined have very low levels of serum DHEA. The decreased DHEA levels were not simply a reflection of a long term corticosteroid treatment which may cause adrenal atrophy, since serum samples drawn at the onset of disease, which are devoid of corticosteroid treatment, also contained low levels of DHEA. In addition, exogenous DHEA restored impaired IL-2 production of T cells from patients with SLE in vitro. These results indicate that defects of IL-2 synthesis of patients with SLE are at least in part due to the low DHEA activity in the serum.