title: Preliminary studies on parkin gene deletion at exons 1 to 6 in Chinese patients with praecox Parkinson's disease.
abstract: OBJECTIVE
  To search parkin gene deletion mutations at exons 1 to 6 in Chinese patients with praecox Parkinson's disease (PPD) and analyze them together with the clinical features of PPD.
  
  
  METHODS
  DNA was extracted from peripheral blood of PPD patients; deletion mutations of parkin gene were identified by PCR amplification and agarose gel electrophoresis. The clinical data were analyzed together with the above information.
  
  
  RESULTS
  Out of 21 patients, 2 had exon 1 deletion, 2 exon 4 deletion, and 1 exon 6 deletion. The mean age of the patients with deletion mutation was 45.7+/-1.8 years. All of the patients who had parkin gene deletion mutation had tremor, rigidity and bradykinesia, but athetosis and family history of PD were not found. In additon, the deletion mutations of parkin gene at exons 2, 3, 5, were not found.
  
  
  CONCLUSIONS
  There are deletion mutations of parkin gene at exons 1,4,6 in PPD of Chinese, and such deletions generally happen on middle-aged patients.
authors.affiliation: Department of Neurology, Xuan-Wu Hospital, Capital Medical University, Beijing, 100053 P.R.China. cpbhcpbh@public.bta.net.cn
authors.forename: H
authors.initials: H
authors.lastname: Bia
authors.forename: M
authors.initials: M
authors.lastname: Shao
authors.forename: X
authors.initials: X
authors.lastname: Dong
authors.forename: J
authors.initials: J
authors.lastname: Yang
authors.forename: Q
authors.initials: Q
authors.lastname: Gao
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: B
authors.initials: B
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D005091:Exons; D005260:Female; D017353:Gene Deletion; D006801:Humans; D008025:Ligases / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000235:genetics*; D044767:Ubiquitin-Protein Ligases
chemical_list: D044767:Ubiquitin-Protein Ligases; D008025:Ligases