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epilepsy, stroke,Parkinson's disease,myopathy, neuropathy

Margherita Milone, Rami Massie
BACKGROUND: Mitochondrial disorders result from primary defects in the mitochondrial DNA (mtDNA) or from defects in nuclear genes which cause disease by affecting the mtDNA. POLG1 is a nuclear gene which encodes for the catalytic subunit of the mtDNA polymerase gamma, essential for mtDNA replication. Less than a decade ago, POLG1 mutations were discovered in patients with progressive external ophthalmoplegia. Since then, it has emerged that POLG1 mutations can result in a spectrum of clinical manifestations, resulting in autosomal recessive or dominant mitochondrial diseases...
March 2010: Neurologist
P Bodenmann, J Ghika, G Van Melle, J Bogousslavsky
We studied the neurological comorbidity of parkinsonism in 368 consecutive patients from the Lausanne Movement Disorders Registry. Only 6 patients had no neurological comorbidity. We found that 23p.100 of our patients had ischemic strokes, especially large vessel strokes, i.e three times more than in an age-matched control study performed in a recent survey in our country, which is a new finding in contradiction with previous reports mentioning that Parkinson's disease may be a protective factor against stroke...
January 2001: Revue Neurologique
D C Wallace, M T Lott, J M Shoffner, M D Brown
A number of mitochondrial DNA (mtDNA) mutations have been identified which cause familial, late onset neuromuscular degenerative diseases. These include missense mutations in most of the mtDNA polypeptide genes as well as base substitutions in several tRNA genes. Missense mutations in the mitochondrial electron-transport genes cause Leber hereditary optic neuropathy. Ten mutations have been associated with this disease, but four at nps 11,178, 3460, 4160 and 15,257 appear sufficient in themselves to cause the disease...
1992: Journal of Inherited Metabolic Disease
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