带环后月经过多机制的超微结构研究

带宫内避孕环系常用之节育措施,不正常子宫出血系常见之并发症。本文旨在研究发生出血的机制,提出改进意见,以利于带环妇女的健康,提高带环率。本文对12例带不锈钢环后月经过多妇女的子宫内膜进行超微结构研究,与6例带环而月经正常的妇女对比,结合基础体温、血雌孕激素测定等资料加以讨论。研究结果表明:(1)带环不影响卵巢功能。(2)环周围区与远离区内膜发育的不同步可能是出血过多的重要原因。(3)选择大小适宜的环(宁小勿大)既提高避孕效果又避免出血过多。     

甲壳素制备工艺改进——天然甲壳素的提取

甲壳素制备工艺改进为统一常温进行,操作简便,产品相对收率提高5～10％,同时降低了能耗、机械要求强度、劳动保护条件和生产成本,并经热分析说明产品维持了甲壳素的天然特性,即分子中每结构单元含有1/2分子缔合水,是天然的甲壳素产品并有益于其脱乙酰化物──壳聚糖质量的提高。     

Chemical constituents of Isodon albopilosus (C.Y. Wu et H.W. Li) Hara]

Five compounds have been isolated from the stems and leaves of Isodon albopilosus. On the basis of spectroscopic and chemical data, they were identified as macrocalyxin C, stearic acid, beta-sitosterol, ursolic acid and beta-sitosterol-beta-D-glucoside, respectively.     

中国保健食品行业的现状和发展趋势

<正>保健食品在不同的国家有不同的定义,实施不同的标准、规范和管理,中国的保健食品是由传统的养生概念扩展、衍生而来,其作用机理为:用五味之阴,养五气之阳:平衡阴阳,通经活络、调和气血、滋补脏腑、培     

医生职业用语中的伦理问题

论述了医生职业语言的基本特征，分析了诊断和治疗过程两个环节中医患语言的基本特征，总结了医生职业用语基本的伦理原则。     

Announcement

The name of one of the contributing authors to this paper was omitted from the list of authors that appeared on page 373. The correct list of authors and affiliations are printed below:     

A diagnostic algorithm for male genital oedema

Male genital oedema can be defined as swelling or the appearance of swelling of the scrotum and/or the penile shaft and prepuce. Despite the various causes of genital oedema reported in the published work, a concise approach to the evaluation and management has not been sufficiently addressed.     

Exogenous advanced glycosylation end products induce diabetes-like vascular dysfunction in normal rats: a factor in diabetic retinopathy

BACKGROUND. Diabetic retinopathy has been shown to be directly associated with the degree and duration of hyperglycemia, and advanced glycosylation end products (AGEs) have been implicated in this pathological process. The purpose of the experiments reported here was to study the effect of AGE deposition on retinal vascular damage which leads to diabetic retinopathy. METHODS. Intravenous injection of exogenous AGEs was used to treat wild-type non-diabetic Sprague-Dawley rats. One of the two retinal slides from each animal was treated using immunohistochemical staining to label retinal vascular AGE deposition, the other H&E staining for counting of capillary pericytes. The results were compared with the findings in untreated wild-type and diabetic controls and in rats treated with unmodified rat serum albumin (RSA). RESULTS. After 2 weeks of continuous treatment, AGEs were identified in the retinal vascular tissue of the AGE-RSA-injected group. The average number of retinal capillary pericytes per 10x100 microscope power field was 4.313+/-0.34 (mean +/- SD) in the AGE-RSA-injected group, compared with 5.798+/-0.481 in the control group ( P<0.01). CONCLUSION. These experiments demonstrate that AGEs, independent of other metabolic factors, can induce vascular change resembling that of diabetic retinopathy.     

新生儿脐炎85例脐部分泌物细菌学分析

目的：了解新生儿脐部感染细菌学状况，为临床提供预防及治疗参考。方法：调查我院1997年1月－2002年6月收治的有完善细菌学资料的新生儿脐炎85例，对所获得的98例致病菌的种类及药敏状况进行分析。结果：社会获得性感染主要致病菌为G^ 球菌（70．5％），金黄色葡萄球菌占比例较高。医院感染主要致病菌为C^-杆菌（51．4％），以大肠埃希菌占比例较高。两类感染所分离的细菌均具有多重耐药性，但对氨基糖苷类及喹诺酮类耐药率较低，其次是第三代头孢菌素类抗生素。结论：临床对新生儿脐部感染，特别是有严重感染中毒症状时，应首先考虑使用第三代头孢菌素类抗生素。