顶空—气相色谱法测定盐酸洛美利嗪中乙腈残留量

目的：建立盐酸洛美利嗪原料药中乙腈残留量的测定方法。方法：采用顶空进样法，80％DMF水溶液为溶剂，平衡温度70℃，平衡时间40min，气相色谱条件：采用不锈钢填充色谱柱：柱长2m，内径3mm，粒径为0.25-0.32mm的二乙烯苯与乙基乙烯苯共聚物有机担体为填料，柱温130℃，FID检测器，检测器温度250℃，氮气为载气，流速50mL.min^-1。结果：乙腈在23．46－234．6μg.mL^-1的浓度范围内呈良好的线性关系（r=0.9978)，回收率为96．7％（RSD＝3．8％），检出限小于40μg.g^-1。结论：本方法简单，快捷且灵敏度高，可以用于盐酸洛洛美利嗪中乙腈残留量的控制。     

白桦树皮挥发油成分的研究

采用气相色谱－质谱联用方法，对白桦树皮挥发油进行了研究，共鉴定出２９种化合物，主要成分为２－氧代丙酸（５３．５４％）。     

Pharmacokinetics of Controlled Release and Immediate Release Morphine Sulphate Tablets after a Single Dose and Multiple Doses in Chinese Volunteers

健康志愿者１０名，随机交叉口服硫酸吗啡控释片（ＣＲＭＳ）３０ｍｇ（３０ｍｇ×１）和硫酸吗啡普通片（ＩＲＭＳ）２０ｍｇ（１０ｍｇ×２），分别于服药前后各时点取静脉血，用ＧＣＭＳ测定血浆中吗啡含量。以药代软件程序处理，分别求得ＣＲＭＳ和ＩＲＭＳ的Ｃｍａｘ为１９．３８±３．８０和２１．２７±６．２１ｎｇ／ｍｌ；ｔｍａｘ为２．３６±０．３７ｈ和０．５５±０．１６ｈ；ｔ１／２β为３．５３±０．８７ｈ和３．０３±０．７４ｈ，曲线下面积ＡＵＣ为１４５．１５±１７．６５和９３．０８±１６．６５ｎｇ·ｈ／ｍｌ。癌症病人多次口服硫酸吗啡至稳态，ＣＲＭＳ和ＩＲＭＳ的峰浓度分别为２７．４３±０．３３ｎｇ／ｍｌ，２２．６８±０．１６ｎｇ／ｍｌ；谷浓度分别为１９．４５±１．４４ｎｇ／ｍｌ；１８．１４±０．４９ｎｇ／ｍｌ。     

6－甲氧基正丁苯酞在大鼠肝微粒体中的代谢研究

报道了用ＧＣ／ＭＳ方法及衍生化技术研究６甲氧基正丁苯酞（ＭＢＰ）在大鼠肝微粒体中的代谢转化结果。６甲氧基正丁苯酞在苯巴比妥（ＰＢ）诱导的大鼠肝微粒体中主要转化为３羟基、γ羟基取代物，６羟基正丁苯酞与一个环氧化代谢产物     

顶空气相色谱法测定醋酸烯诺孕酮埋植剂中环氧乙烷的残留量

用顶空气相色谱法测定醋酸烯诺孕酮埋植剂中环氧乙烷的残留量，结果表明，线性试验与精密度良好，平均回收率为99．8％，残留量为0．93％。样品在灭菌后，室温放置3天，其环氧乙烷残留量均在0．0001％以下，符合环氧乙烷残留量应不大于0．001％的规定。表明采用顶空气相色谱法测定醋酸烯诺孕酮理植剂中环氧乙烷残留量，方法简便，结果准确，适用于对该产品中环氧乙烷残留量的检测与控制。     

Simultaneous Detection of ACP1 and GC Genotypes Using PCR/SSCP

The classical enzyme and protein markers ACP1 and GC have gained new importance because of the biological functions of their gene products. ACP1 encodes a low molecular weight enzyme which is now recognized as a phosphotyrosine phosphatase with a role in the regulation of signal transduction pathways, and GC‐globulin acts both as a transporter of vitamin D and as a plasma actin scavenger and plays a role in macrophage activation. These two polymorphisms were phenotyped for decades on the basis of electrophoretic isozyme or protein patterns; the gene structures are now known. Nucleotide substitutions determining the common alleles are close enough at each locus to be contained in one short PCR product. We have developed a simple, rapid and reliable multiplex method based on PCR and SSCP which allows the simultaneous determination of the common ACP1 and GC genotypes.     

Allergic conversion of protective mucosal immunity against nasal bacteria in patients with chronic rhinosinusitis with nasal polyposis

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Mevalonic acidemia: First case of Japan

Summary Mevalonic acidemia is a rare metabolic disorder due to mevalonate kinase deficiency which affects the biosynthesis of cholesterol and nonsterol isoprenes. We report the first case of Japan. The clinical course is characterized by intrauterine growth retardation, postnatal growth failure, intractable diarrhea, liver dysfunctions and death at three months of age. Dysmorphic features including triangular face, protrusion of forehead, hypertelorism, low set ears and micrognathism were noted. High mevalonic acid level was found by GC/MS.     

弓形虫分离株表膜脂肪酸的色质谱分析

本文采用有机质谱法（ＧＣ／ＭＳ）对弓形虫不同分离株，虫体表膜脂肪酸的种类和含量进行观察分析，实验结果表明弓形虫速殖子细胞膜含有６种主要脂肪酸，范围在Ｃ１４－Ｃ１８之间，分别为肉豆寇酸、棕榈油酸、软脂酸、硬脂酸、油酸和亚油酸，而油酸和软脂酸约占总脂肪酸含量的７０％（５２－８４％）。本室自畸胎儿分离获得的ＳＨ多个虫株的脂肪酸含量及组分与国际标准人源ＲＨ株相一致，而ＳＨ４，ＳＨ（１０）与ＰＰ株，ＲＴ株相似，与平行观察的人和哺乳动物细胞膜的脂肪酸在含量与组分上均有明显差异，为鉴定分离的弓形虫株提供了实验依据。     

煤快速加氢热解焦油组成的分析

采用溶剂萃取－化学处理－柱层析相结合的预处理分离程序、色－质联用和色－红联用结合色谱保留值的定性方法,分析研究了内蒙东胜煤快速加氢热解焦油的化学成分和结构,推测鉴定出２００多种化合物,并对具有代表性的１９种多环芳烃进行了定量分析,讨论了快速加氢热解焦油化学成分的结构特征。