Steinberg S J, Ward C P, Fensom A H
Paediatric Research Unit, United Medical School of Guy's Hospital, London, UK.
J Med Genet. 1994 Apr;31(4):317-20. doi: 10.1136/jmg.31.4.317.
Niemann-Pick disease type C is a clinically heterogeneous storage disorder with an unknown primary metabolic defect. We have undertaken somatic cell hybridisation experiments using skin fibroblast strains from 12 patients representing a wide clinical spectrum. Preliminary experiments using filipin staining of free cholesterol as a marker for complementation indicated the existence of one major group (group alpha) and one minor group (group beta) represented by one mutant strain. Subsequent experiments in which sphingomyelinase activity was measured as a marker for complementation using five mutant strains showing activity consistently < 40% control levels confirmed the existence of the second group.
C型尼曼-匹克病是一种临床异质性的贮积病,其原发性代谢缺陷不明。我们使用了来自12名患者的皮肤成纤维细胞株进行体细胞杂交实验,这些患者代表了广泛的临床谱系。初步实验使用荧光素染色游离胆固醇作为互补标记,表明存在一个由一个突变株代表的主要组(α组)和一个次要组(β组)。随后的实验中,使用五个活性始终低于对照水平40%的突变株,测量鞘磷脂酶活性作为互补标记,证实了第二组的存在。