Journal
CLINICAL CHEMISTRY AND LABORATORY MEDICINE
Volume 39, Issue 4, Pages 308-312Publisher
WALTER DE GRUYTER & CO
DOI: 10.1515/CCLM.2001.047
Keywords
alpha-synuclein; Lewy body diseases; multiple system atrophy; Parkinson's disease; neurological disease
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Parkinson's disease is the most common movement disorder and the second most common neurodegenerative disease. Neuropathologically, it is characterized by the degeneration of nerve cells that develop filamentous inclusions in the form of Lewy bodies and Lewy neurites. Recent work has shown that rare, familial forms of Parkinson's disease are caused by missense mutations in the alpha -synuclein gene and that the filamentous lesions of Parkinson's disease are made of alpha -synuclein. The same is true of the Lewy body pathology that is associated with other neurodegenerative diseases, such as dementia with Lewy bodies. The filamentous inclusions of multiple system atrophy have also been found to be made of alpha -synuclein, thus providing an unexpected molecular link with Lewy body diseases. Recombinant alpha -synuclein assembles into filaments with similar morphologies to those found in the human diseases and with a cross-beta diffraction pattern characteristic of amyloid. The related proteins beta -synuclein and gamma -synuclein are poor at assembling into filaments. They are not present in the pathological filamentous lesions and have not been found to be linked to genetic disease. The new work has established the alpha -synucleinopathies as a major class of neurodegenerative disease.
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