| Literature DB >> 9042918 |
H Matsumine1, M Saito, S Shimoda-Matsubayashi, H Tanaka, A Ishikawa, Y Nakagawa-Hattori, M Yokochi, T Kobayashi, S Igarashi, H Takano, K Sanpei, R Koike, H Mori, T Kondo, Y Mizutani, A A Schäffer, Y Yamamura, S Nakamura, S Kuzuhara, S Tsuji, Y Mizuno.
Abstract
An autosomal recessive form of juvenile Parkinsonism (AR-JP) (MIM 600116) is a levodopa-responsive Parkinsonism whose pathological finding is a highly selective degeneration of dopaminergic neurons in the zona compacta of the substantia nigra. By linkage analysis of diallelic polymorphism of the Mn-superoxide dismutase gene (SOD2), we found a family with AR-JP showing perfect segregation of the disease with the SOD2 locus. By extending the linkage analysis to 13 families with AR-JP, we discovered strong evidence for the localization of the AR-JP gene at chromosome 6q25.2-27, including the SOD2 locus, with the maximal cumulative pairwise LOD scores of 7.26 and 7.71 at D6S305 (theta = .03) and D6S253 (theta = .02), respectively. Observation of obligate recombination events, as well as multipoint linkage analysis, placed the AR-JP gene in a 17-cM interval between D6S437 and D6S264. Delineation of the AR-JP gene will be an important step toward our understanding of the molecular mechanism underlying selective degeneration of the nigral neurons.Entities:
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Year: 1997 PMID： 9042918 PMCID： PMC1712507
Source DB: PubMed Journal: Am J Hum Genet ISSN： 0002-9297 Impact factor: 11.025