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[Analysis of the parkin gene deletion mutations in Chinese patients with Parkinson's disease].

OBJECTIVE
Clarify parkin gene deletion mutations at exons 3 to 7 in Chinese patients with Parkinson's disease (PD) and analyze them together with the clinical features of PD.


METHODS
DNA was extracted from peripheral blood of 33 sporadic PD patients and 6 familial PD 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
Of the 33 sporadic PD patients, 1 had exons 5 and 7 deletion, 2 had exon 7 deletion. The age of onset was 46, 48, 50 respectively. In the 6 familial PD patients, 1 had exon 5 deletion. The inheritance pattern in this patient was autosomal recessive and onset of the patient was 60. All of the patients who had parkin gene deletion mutations had tremor, rigidity and bradykinesia, but athetosis was not found. In addition, deletion mutations of parkin gene at exons 3, 4 and 6, were not found.


CONCLUSION
There are deletion mutations of parkin gene at exons 5 and 7 in Chinese PD patients.