title: [Efficiency of multiplex ligation-dependent probe amplification combined with short tandem repeat linkage analysis for the prenatal diagnosis for Duchenne muscular dystrophy].
abstract: OBJECTIVE
  To investigate the efficiency of multiplex ligation-dependent probe amplification (MLPA) combined with short tandem repeat (STR) linkage analysis for the prenatal diagnosis for Duchenne muscular dystrophy (DMD).
  
  
  METHODS
  Gender of the fetus was first determined by the presence of Y chromosome sex-determining gene (SRY). Subsequently, combined MLPA and STR linkage analysis were applied for the probands, pregnant women and fetuses in 45 affected families.
  
  
  RESULTS
  Among the 45 families, 31 SRY-positive fetuses were identified, among whom six were diagnosed with DMD. For 14 SRY-negative fetuses, four were diagnosed as carriers. The remainders were normal.
  
  
  CONCLUSIONS
  MLPA can detect mutations in the exons of dystrophin gene, whilst STR linkage analysis can determine whether the fetus has inherited the maternal X chromosome bearing the mutant gene. As the result, the method can detect affected fetuses in which no exonic mutations are detected with MLPA. By combining the two methods, the diagnostic rate for DMD can be greatly improved.
authors: The People's Hospital of Henan Province, Zhengzhou, Henan, People's Republic of China. litao0510@163.com
authors: Tao
authors: T
authors: Li
authors: Dong
authors: D
authors: Wu
authors: Qiao-fang
authors: QF
authors: Hou
authors: Li
authors: L
authors: Wang
authors: Qian-nan
authors: QN
authors: Guo
authors: Bing
authors: B
authors: Kang
authors: Hong-yan
authors: HY
authors: Liu
authors: Ke
authors: K
authors: Yang
authors: Xue-bing
authors: XB
authors: Ding
authors: Shi-xiu
authors: SX
authors: Liao
mesh_terms: D016189:Dystrophin / Q000235:genetics; D005091:Exons; D005260:Female; D008040:Genetic Linkage; D006579:Heterozygote; D006801:Humans; D008297:Male; D018895:Microsatellite Repeats; D060885:Multiplex Polymerase Chain Reaction; D020388:Muscular Dystrophy, Duchenne / Q000175:diagnosis* / Q000235:genetics*; D009154:Mutation; D011247:Pregnancy; D011296:Prenatal Diagnosis
chemical_list: D016189:Dystrophin