Inhibitory effect of glycyrrhiza uralensis fish and chelidonium majus L on gastrocarcinogenesis induced by N-methyl-N′-nitron-N-nitrosoguanidine

In order to investigate the antagonistic effect of Glycyrrhiza Uralensis Fish (GUF) and Chelidonium maJus L (CML) on gastrccarcinogenesis induced by MNNG in Wastar rats, we treated the rats with MNNG alone (group 1) and with MNNG plus GUF and CML (group 2 and 3) respectively. The incidence of infiltrating adenocarcinoma of the glandular stomach and duodenum in group 2 was significantly lower than that in group 1 (26.7% vs. 67.8%). The differentiation and aggressivenees of carcinomas occured in group 2 were much better and mild than those in group 1. Present study also demonstrated that the inhibitory effect of CML on proliferation of human stomach carcinoma cell line MGC-803 was very remarkable; in addition, GUF and CML were able to antagonise the mutagenic activation of MNNG. These results suggest that GUF and CML may be empoyed in prevention of gastric carcinoma.     

增殖细胞核抗原在鼻咽癌组织中的表达及其临床意义

目的：探讨鼻咽癌（ＮＰＣ）组织ＰＣＮＡ的表达与其临床进展、病理组织分裂的相互关系。方法：用免疫组化Ｓ－Ｐ法检测１１３例ＮＰＣ和２５例鼻咽慢性炎的ＰＣＮＡ表达。结果：１０３例ＮＰＣ和３例鼻咽慢性炎呈ＰＣＮＡ阳性。ＮＰＣ呈ＰＣＮＡ低增殖频率者，倾向于Ｉ、Ⅱ期临床分期（８７．１％）及无淋巴结转移（７０．９６％）。高增殖频率者，倾向于Ⅲ、Ⅳ期临床分期（８２．１％）及有淋巴结转移（７９．４９％）。增殖频率与     

HPLC测定血浆滤液中游离顺氨氯铂浓度

本文研究和建立了超滤衍生化高效液相色谱法(HPLC)测定血浆中游离顺氨氯铂浓度的方法。取肝素抗凝的血浆样品用CAX-50超滤膜(截留物分子量>50000)超滤、去除血浆蛋白和与血浆蛋白结合的药物。在滤液中收集得到的游离顺氨氯铂以及与小分子物质结合的顺氨氯铂,通过柱前衍生化反应,生成的Pt(DDTC)_2在254nm波长处有较强的吸收,经过HPLC分离与检测。流动相为甲醇:水(4:1,v/v),固定相为YWG-C_18H_37(5μm)化学键合相,以NiCl_2为内标,顺氨氯铂和内标衍生物的保留时间分别为4.84和6.50min。在浓度为100.8～705.6ng/ml范围内呈良好线性,相关系数r=0.9995。     

青海玉树健康人甲状腺激素测定

本文对玉树(海拔3700米)正常人58例的甲状腺激素用放射免疫法进行了测定,与西宁地区和平原地区对比,结果说明玉树地区T3、T4值明显或显著低于西宁和平原地区。TSH值又明显或显著高于西宁和平原地区、西宁地区P3、T4和TSH值均明显或显著低于平原。玉树地区藏、汉之间;男、女之间也有一定差异。这可能是高原低气压,缺氧对肝脏代谢的影响,调节甲状腺激素,以求机体对高原坏境的适应。     

BGM细胞,Hela细胞,HEL细胞与A549细胞对HSV—1敏感性的比较

用单纯疱疹病毒－１型（ＨＳＶ－１）感染ＢＧＭ细胞、Ｈｅｌａ细胞、ＨＥＬ细胞及Ａ５４９细胞，利用空斑试验，比较四种细胞对ＨＳＶ－１的敏感性。结果示，ＨＳＶ－１在ＢＧＭ细胞培养中空斑形成单位（ＰＦＵ）数最多，出现细胞病变的时间早。提示ＢＧＭ细胞可为ＨＳＶ－１的分离培养提供一种新的、敏感细胞。     

Graves病患者血甲状旁腺激素、钙、磷、碱性磷酸酶基础值的观察

对照观察了28例Graves病患者及29名正常人血浆甲状旁腺激素、(PTH)血钙、血磷、碱性磷酸酶的基础值。Graves病组血碱性磷酸酶明显高于对照组,而PTH、钙、磷无显著差异。Graves病组血钙>2.75mmol/L者占21%,与某些文献大致相符。正常组血钙与PTH基础值间呈负相关,而Graves病组该两值间无相关,提示Graves病时血钙浓度的平衡调节中PTH以外的因素如甲状腺激素等可能对其影响较大。     

断腕再植术后手内在肌挛缩

探讨断腕再植术后手内在肌挛缩的发生率、治疗方法及预防。方法:作者总结了近24年内进行断腕再植并得到随访的63例资料,对其中发生手内在肌挛缩41例的发病机理、治疗结果及预防进行了分析和讨论。结果:63例断腕再植术后有41例发生手内在肌挛缩,发生率为65％。缺血时间超过16小时与16小时内的断腕再植术后手内在肌挛缩的发生率,两者差异有显著性意义(t=3.81,p<0.05)。二期行手内在肌手术矫正者效果不理想。结论:断腕再植术后手内在肌挛缩的处理关键在于预防。清创后用肝素化全血对离断手进行灌注,早期行手内在肌筋膜间区减压,将会取得较好的效果。     

胃粘膜上皮“适应性细胞保护”机制防止胃肿瘤发生的作用

投用致癌剂的对照组其胃肿瘤发生率为22.2％。若同时给予40％Z醇液空腹灌胃,则胃肿瘤发生率达55.9％。如在给乙醇液前15分钟,先给予4％的辣椒煎液灌胃,则胃肿瘤发生率只有20.0％,相近于对照组的水平(后2组差别有极显著意义,P<0.01)。这种给损伤剂(乙醇)之前先给予微刺激剂(辣椒)所产生的胃粘膜的保护作用,是通过促使胃粘膜上皮细胞合成内源性前列腺素(PGs)来实现的,是一种“适应性细胞保护”机制。这种保护胃粘膜的作用可降低胃肿瘤的发生率。     

A study on plasma norepinephrine and epinephrine levels in TCM liver syndromes.

The levels of plasma norepinephrine (NE) and epinephrine (E) were determined by HPLC in 220 patients with various TCM liver syndromes, and in 96 healthy subjects as controls. The plasma NE and E contents were higher in patients with liver excess syndromes, including Ganqi Yujie (GQYJ [symbol: see text]) syndrome, Ganyang Shangkang (GYSK [symbol: see text]) syndrome, Ganhuo Shangyan (GHSY [symbol: see text]) syndrome, and Ganyang Huafeng (GYHF [symbol: see text]) syndrome; while they were lower in patients with liver deficiency syndromes, including Ganqixu (GQX [symbol: see text]) syndrome, Ganxuexu (GXX [symbol: see text]) syndrome, and Ganyinxu (GYX [symbol: see text]) syndrome. Futhermore, when Ganshen Yinxu (GSYX [symbol: see text]) syndrome was turned into GYSK and then into GYHF, the plasma NE and E contents increased in order of precedence; while when GQYJ was turned into Ganyu Pixu (GYPX [symbol: see text]) syndrome, both NE and E contents decreased. The results suggest that the plasma NE and E contents are reliable objective parameters for the study of pathophysiological basis of the liver excess and liver deficiency syndromes, and the liver-kidney and liver-spleen interrelated syndromes.     

扩散法被动式甲醛个体监测器（Ⅱ型）的研制

介绍了一种基于气体分子扩散原理的被动式甲醛个体采样器，它是在Ⅰ型采样器的基础上完成的。采用甘油（２０％）／偏重亚硫酸钠（０．２５％）浸渍的定量滤纸（φ４２ｍｍ）作为吸收层，空气中甲醛扩散到吸收层上，形成稳定的化合物。采样一定时间后，取出吸收层，洗脱后，用ＡＨＭＴ化学比色法测定所采集到的甲醛。这种采样器的平均采样速率为８３ｍｌ／ｍｉｎ，标准偏差为７．２ｍｌ／ｍｉｎ，与有动力吸收管采样的方法相比较，总不确定度小于±２５％。