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智力低下(mental retardation,简称MR)病因学的研究,一直是一个相当活跃的领域,近十年来,发现 X 连锁的智力低下患者中伴育形态异常的脆性 X 染色体[fra-gile Xchromosome;简称 fra(X)],更使人们对该领域的研究发生了极大的兴趣。本文对脆性 X 染色体与智力低下的研究进展及其临床意义作一概要综述。
The study of etiology of mental retardation (MR) has always been a very active field. In the recent ten years, it has been found that frailty Xchromosome (fra (X)], but also make people have great interest in the field of research. This review summarizes the research progress and clinical significance of fragile X chromosomes and mental retardation.