van Essen A J, Kneppers A L, van der Hout A H, Scheffer H, Ginjaar I B, ten Kate L P, van Ommen G J, Buys C H, Bakker E
Department of Medical Genetics, University of Groningen, The Netherlands.
J Med Genet. 1997 Oct;34(10):805-12. doi: 10.1136/jmg.34.10.805.
Detection of large rearrangements in the dystrophin gene in Duchenne and Becker muscular dystrophy is possible in about 65-70% of patients by Southern blotting or multiplex PCR. Subsequently, carrier detection is possible by assessing the intensity of relevant bands, but preferably by a non-quantitative test method. Detection of microlesions in Duchenne and Becker muscular dystrophy is currently under way. Single strand conformational analysis, heteroduplex analysis, and the protein truncation test are mostly used for this purpose. In this paper we review the available methods for detection of large and small mutations in patients and in carriers and propose a systematic approach for genetic analysis and genetic counselling of DMD and BMD families, including prenatal and preimplantation diagnosis.
通过Southern印迹法或多重PCR,约65%-70%的杜兴氏和贝克氏肌营养不良患者的肌营养不良蛋白基因大重排可被检测到。随后,通过评估相关条带的强度可进行携带者检测,但最好采用非定量检测方法。杜兴氏和贝克氏肌营养不良微损伤的检测目前正在进行中。单链构象分析、异源双链分析和蛋白质截短试验大多用于此目的。本文综述了检测患者和携带者中大小突变的现有方法,并提出了一种针对杜兴氏肌营养不良症(DMD)和贝克氏肌营养不良症(BMD)家系进行遗传分析和遗传咨询的系统方法,包括产前诊断和植入前诊断。