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Stroke‐like episodes in autosomal recessive cytochrome oxidase deficiency
Author(s) -
Morin Charles,
Dubé Jacques,
Robinson Brian H.,
Lacroix Jacques,
Michaud Jean,
De Braekeleer Marc,
Geoffroy Guy,
Lortie Anne,
Blanchette Christine,
Lambert Marie A.,
Mitchell Grant A.
Publication year - 1999
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/1531-8249(199903)45:3<389::aid-ana16>3.0.co;2-b
Subject(s) - medicine , lactic acidosis , stroke (engine) , leigh disease , cytochrome c oxidase , neurovascular bundle , cardiology , ischemia , pathology , mitochondrial dna , biology , mitochondrion , gene , genetics , mechanical engineering , engineering
Stroke‐like episodes, defined as periods of acute localized neurological dysfunction during which brain imagery suggests cerebral ischemia but vascular anatomy is normal, occurred in 3 patients with autosomal recessive Saguenay‐Lac St‐Jean (SLSJ) cytochrome oxidase (COX) deficiency. The patients developed focal neurological deterioration and frontal hypodensities on cerebral computerized tomography (CT). Arteriography, performed in 1 patient during an acute episode, showed normal vascular anatomy. Nevertheless, capillary shunting was evident both in regions that appeared abnormal on the initial cerebral CT study and in regions that appeared normal but subsequently developed Leigh disease. Stroke‐like episodes did not exacerbate systemic acidosis, and acidotic decompensations occurred independently of stroke‐like episodes. In conclusion, stroke‐like episodes occur in autosomal recessively inherited congenital lactic acidoses as well as in those caused by mitochondrial DNA mutations. In some cases, acute localized neurovascular changes occur in regions that subsequently develop Leigh disease. Ann Neurol 1999;45:389–392