Association of HLA-DR with susceptibility to and clinical expression of rheumatoid arthritis: re-evaluation by means of genomic tissue typing

The clinical expression of rheumatoid arthritis (RA) varies considerably among individual patients. Genetic variations in human leucocyte antigen (HLA) may influence clinical expression. We re- examined the association of HLA-DR with susceptibility to and clinical expression of RA using genomic tissue typing, since most studies were based on (less reliable) serological techniques. Seventy-eight patients with recent-onset RA, all participating in a clinical trial on therapeutic strategies, were HLA-DR typed by means of low-resolution genomic typing. Cumulative disease activity within the first 3 yr of disease was measured. Of the RA patients, 54% expressed DR4 (DR4+) vs 26% of healthy controls. Rheumatoid factor (RF)-positive patients had a higher cumulative disease activity than RF-negative patients. Patients who were either DR1+ or DR4+ had a higher cumulative disease activity than those who expressed neither DR1 nor DR4. This association was less obvious after correction for RF status. The association of DR52+ (DR3, 5, 6) and a lower cumulative disease activity could also not be demonstrated after correction for RF status. Among RF-negative patients, DR51+ (or DR2+) was associated with a higher cumulative disease activity. Other HLA-DR types (including DR1 and DR4 separately) were not associated with the severity of RA. DR4 was associated with susceptibility to RA in our patients; HLA-DR low-resolution genomic tissue typing did not yield additional information to RF status for the clinical identification of individual patients with a poor prognosis.      

Etiology and prognosis of pregnancy-related pelvic girdle pain; design of a longitudinal study

Background  

Absence of knowledge of pregnancy-related pelvic girdle pain (PPGP) has prompted the start of a large cohort study in the Netherlands. The objective of this study was to investigate the prevalence and incidence of PPGP, to identify risk factors involved in the onset and to determine the prognosis of pregnancy-related pelvic girdle pain.     

表面活性剂用于黄酮药物的薄层色谱分离鉴定的研究

以表面活性剂的胶束溶液为流动相的胶束色谱技术已引人重视,并已成功地应用于药物的薄层色谱分离鉴定。黄酮类化合物是中草药中广泛存在的一类有效成分。本文以十余种表面活性剂的胶束溶液为流动相研究了槲皮素、桑色素和芦丁的胶束薄层色谱行为,拟出了以4％Zeph—乙酰丙酮—水(5:1.5:1.5)溶液为流动相,聚酰胺薄膜为固定相分离此三种黄酮的层析体系,并对槐花进行分离和鉴定,得到了良好效果。     

尿中多种蛋白同化激素药物的GC/MS分析及代谢研究

本文对国际奥委会禁用的19种蛋白同化激素进行了人体服药试验;从尿中富集提取所排泄的这类激素,对它们在人体内的代谢情况进行研究,弄清了各药物的主要代谢途径;获得了药物原型及其主要代谢物的GC,MS数据;在此基础上,建立了系统分析和检测尿中蛋白同化激素的最优化方法。