红细胞和血痕酸性磷酸酶(EAP)表型及广东人群EAP基因频率的调查

本文采用薄层聚丙烯酰胺凝胶等电聚焦电泳检测红细胞及血痕酸性磷酸酶表型,并对不同条件下的血痕标本进行检测,发现室温下(15～33℃)保存的110例纱布血痕7周内可全部正确分型,21例磁板血痕9周内均可正确分型;含血量≥5λl 的血痕可被正确检出 EAP 表型;日晒、水洗、发霉等因素可影响血痕 EAP 型的正确检出。同时调查了广东人群的 EAP 表型分布,基因频率为 p~a=0. 2338,p~b=0. 7662,发现 EAP 基因频率分布存在着地区差异。

STUDY ON THE EAP DISTRIBUTION AND PHENOTYPING OF EAP IN HUMAN BLOODSTAINS USING IEF

The 340 blood samples from Guangdone area were detected by ultra thin poly- acrylamide gel isoelectric focusing for EAP phenotypes.The phenotypes were 20 EAP A,119 EAP BA,201 EAP B.The gene frequencies of EAP were as foll- ows p~(?)0. 2338,p~(?)0. 7662. The 110 bloodstain samples of the cloth kept at room temperature for 7 weeks could be phenotyped correctly,The 21 bloodstain samp- les on the porcelain plate kept at room temperature for 9 weeks could be phen- otyped correctly.When the blood volume of bloodstain was equal to or over 5μl EAP could be phenotyped.6 out of 20 mouldy bloodstains,the EAP BA phenotype were changed to EAP B.In blind trial,20 bloodstain samples kept at room temperature for 7 weeds could be phenotped correctly.