(-)-Epigallocatechin-3-gallate in Camellia sinensis leaves from Himalayan region of Sikkim: inhibitory effects against biochemical events and tumor initiation in Sencar mouse skin.

Recently, we and others showed that the components of green tea may be useful cancer chemopreventive agents. It has been suggested that (-)-epigallocatechin-3-gallate (EGCG), the major constituent in green tea, may possess antitumor-promoting and/or anticarcinogenic effects in rodent tumor bioassay systems. During the chemical analysis of various green tea products, we found a traditionally preserved preparation of green tea used by tribes in the Himalayan region of Sikkim, India that was rich in EGCG. EGCG was isolated from this tea product, and its inhibitory effects were evaluated against the binding of topically applied 3H-labeled polycyclic aromatic hydrocarbons (PAHs) to epidermal DNA and 12-O-tetradecanoylphorbol-13-acetate (TPA) caused induction of epidermal ornithine decarboxylase (ODC) activity in Sencar mice, the short-term markers of tumor initiation and tumor promotion, respectively. Preapplication of EGCG resulted in significant inhibition (p less than 0.05) in the binding of [3H]PAH to epidermal DNA. Similarly, the topical application of EGCG resulted in significant inhibition (p less than 0.005) in TPA-caused induction of epidermal ODC activity. In further studies, we assessed the anti-skin tumor-initiating effect of EGCG in Sencar mice in an initiation-promotion protocol. The application of EGCG before challenge with 7,12-dimethylbenz[a]anthracene as tumor initiator resulted in significant reduction both in percentage of mice with tumors and number of tumors per mouse compared with a non-EGCG-pretreated group of animals. The results of the present study suggest that the green tea preparation from Sikkim may be a good source for the isolation of EGCG and that this compound may have significant potential as a cancer chemopreventive agent.     

Subclinical neurotoxicity of mercury vapor revealed by a multimodality evoked potential study of chloralkali workers

Pattern visual, brainstem auditory, and somatosensory evoked potential (EP) studies were performed on 26 chloralkali workers. The intensity of mercury vapor exposure in these workers was estimated from the individual working history. Mercury levels in blood, urine, and hair were determined with atomic absorption spectrometry. The EP findings were compared with those from individually matched normal subjects. In brainstem auditory and somatosensory EP studies, prolonged neural conduction times in the central nervous system (CNS) were found in workers exposed to mercury vapor. In the pattern visual EP study, mercury workers had higher interpeak amplitudes. Findings of this study suggested that chronic exposure to mercury vapor would affect the CNS functions. A multimodality EP study is a useful adjunct in evaluation of chronic mercury neurotoxicity, especially in an epidemiological study.     

单克隆抗体反向IHAT检测囊虫病循环抗原

应用抗猪囊虫抗原的单克隆抗体反向间接血凝试验（ＩＨＡＴ），对临床确诊的囊虫病患者进行了血清循环抗原（ＣＡｇ）的检测，阳性率为５１．１４％（６７／１３１）。对１９例脑型囊虫病患者同时测定了血清和脑脊液中的ＣＡｇ，阳性率分别为４７．３６％和７８．９４％，总阳性率为８４．２１％。对治疗０．５３后的１９例患者检测时，血清和脑脊液中ＣＡｇ均呈阴性反应，而检测抗体仍呈阳性反应。５０例正常人、４９例其它寄生虫病及５例其它脑部疾病患者脑脊液的ＣＡｇ均呈阴性反应。结果提示：测定ＣＡｇ对囊虫病活动性感染的诊断及疗效判定均具有一定的实用价值。     

Histopathologic findings in a case of recurrent parotitis in adulthood

Most cases with recurrent parotitis in childhood (RPC) can be cured before puberty.^1–3 A few of them, however, may continue to adulthood.^1–4 To distinguish this condition from other types of chronic parotitis in adults, such as chronic obstructive parotitis,⁵ we suggest that the diagnosis of recurrent parotitis in adults (RPA) be reserved for the cases derived from RPC.⁶ The pathophysiology and development of RPA is still not well known. To our knowledge, there are few reports of RPA in the literature, especially concerning its histopathology. This report describes a cases of RPA studied with sialography and light and electron microscopy.     

支气管肺泡灌洗液、血清、尿液中CEA测定对肺癌诊断价值的研究

应用放射免疫方法联合检测支气管肺泡灌洗液(BALF)、血清、尿液中癌胚抗原(CEA)含量,结果显示:肺癌患者BALF、血清、尿液中CEA均有不同程度的升高,与结核及肺良性疾病组间有显著差异(P<0.01)。其阳性率分别为63.64％,57.38％,27.58％,以BALF阳性率为最高,这对肺癌的诊断及判断预后提供了方便可行的检测手段。     

在体肺隔离高温灌注的实验研究

８条犬于左肺动脉及左房分别插入灌注管及引流管后阻断，使左肺隔离。肝素化预充液中加入超量阿霉素进行常温及高温（４１～４３℃）的灌注转流。监测肺水含量、肺顺应性、血气、肺动脉压、肺实质温度、鼻咽温、血液学等指标，并行病理检查。结果表明：单侧肺隔离高温灌注在手术方法与转流技术上是可行的；它提供的热源简便，温度理想。高温灌注化疗对肺组织有一定影响，但其程度可逆；临床应用是可行的。     

Extraction, purification and ascertainment of anti-hepatoma active principles for targeted preparation of radix Aconiti Kusnezoffii]

The extraction, purification, pharmacological experiments and chemical analysis of anti-hepatoma active principles of Radix Aconiti Kusnezoffii have been studied. The results show that the medicinal material Radix Aconiti Kusnezoffii is efficacious in inhibiting hepatoma, and the active principles are mainly made up of poisonous ester alkaloids. The liver targeting delivery system will be the first choice for its anti-hepatoma preparation, and the effective component AY3a is fit for the preparation of targeted microspheres.     

Iloprost液4℃保存的胎鼠皮层组织移植修复脑损伤的实验研究

为探讨脑组织移植治疗脑损伤及供体组织的保存，作者在制造大鼠运动区皮层损伤的基础上，分别以新鲜及Ｉｌｏｐｒｏｓｔ液或生理盐水保存３小时的胎鼠歧层组织为供体，将其移植到损的大鼠中，观察移植后的神经行为变化及形态学改变。     

健康教育防制儿童营养性贫血的可行性研究

本文以大规模随机化人群实验,用铁剂治疗、铁剂预防和空白对照的方法论证了健康教育做为儿童营养性贫血防制对策与措施的可行性.结果证实健康教育与药物治疗相比前者具有受益人群广泛、发挥作用长效、预防病种广谱、投入少效益高和人群依从性好等优点,比传统的药物治疗和预防更有推广价值,对儿童营养性贫血和类似的儿童常见病的防制是经济、有效的措施.特别是对大规模的人群实施干预只有健康教育是可行的.在预防和治疗疾病过程中也应转变唯药物有效的观念,重视心理和行为的作用,对健康教育给予应有的重视.     

气管插管冲洗治疗新生儿胎粪吸入综合征的疗效观察

目的探讨气管插管冲洗治疗胎粪吸入综合征的临床疗效。方法回顾性总结2002年1月～2004年12月期间收治的新生儿48例,随机分为两组,气管插管冲洗组和无气管插管冲洗组。气管插管组进行气管内吸引,并注射0.5～1ml生理盐水反复1～2次冲洗。对两组进行比较分析。结果两组在机械通气比例、机械通气时间、氧疗时间、住院时间均有显著性差异(P均<0.05)。结论对吸入粘稠胎粪者于吸净气管内分泌物后立即气管插管予气道冲洗,可减少并发症发生率。有治愈率高,病死率低等优点。