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No genetic link to late Parkinson's
A study of 161 sets of twin men suggests that Parkinson's disease that strikes after age 50 doesn't stem from a genetic cause.
References:
Cummings, J.L. 1999. Understanding Parkinson disease. Journal of the American Medical Association 281(Jan. 27):376.
Tanner, C.M., et al. 1999. Parkinson disease in twins. Journal of the American Medical Association 281(Jan. 27):341.
Further Readings:
Marttlla, R.J., et al. 1988. Parkinson's disease in a nationwide twin cohort. Neurology 38:1217.
Vieregge, P., et al. 1992. Parkinson's disease in twins. Neurology 42:1453.
Additional information about Parkinson's disease can be found at http://www.pdf.org/disease.htm.
Sources:
Jeffrey L. Cummings
University of California, Los Angeles
Department of Neurology
710 Westwood Plaza
Los Angeles, CA 90095
Caroline M. Tanner
The Parkinson's Institute
1170 Morse Avenue
Sunnyvale, CA 94089
From Science News, Vol. 155, No. 8, February 20, 1999, p. 122. Copyright © 1999, Science Service.
