[TH gene mutation in Chinese patients with autosomal recessive dopa-responsive dystonia].
OBJECTIVE
To explore the mutation of tyrosine hydroxylase(TH) gene in Chinese patients with autosomal recessive(AR) dopa-responsive dystonia(DRD) and to lay a solid basis for gene diagnosis of AR-DRD in China.


METHODS
Mutation analysis of TH gene was performed in 5 probands with AR-DRD and 2 sporadic patients with DRD by use of polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) combining DNA direct sequencing.


RESULTS
The PCR-SSCP analysis and DNA direct sequencing following PCR revealed no mutation in all the 14 exons of TH gene.


CONCLUSIONS
The mutation rate of TH gene in Chinese patients with AR-DRD is low, hence suggesting the genetic heterogeneity and a new locus for AR-DRD.
Department of Neurology, Xiangya Hospital, Changsha, Hunan, 410008 P.R.China.
Wei
W
Liu
Bei-sha
BS
Tang
Gui-fang
GF
Cao
Tao
T
Chen
Hai-yan
HY
Li
D044466:Asian People / Q000235:genetics; D002681:China; D004421:Dystonia / Q000208:ethnology / Q000235:genetics*; D005260:Female; D005808:Genes, Recessive / Q000235:genetics*; D006801:Humans; D008297:Male; D009154:Mutation; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA; D014446:Tyrosine 3-Monooxygenase / Q000235:genetics*
D014446:Tyrosine 3-Monooxygenase