[Case of methylmalonic acidemia presenting clinically Leigh encephalopathy].
A 1-year-old boy with methylmalonic acidemia had symmetrical lesions of the bilateral basal ganglia, which suggested Leigh encephalopathy. The findings on brain magnetic resonance imaging (MRI) and his physical condition greatly improved by the intravenous administration of vitamin B1. We hypothesized that in this case, clinical Leigh encephalopathy was caused by a impairment of the activity of pyruvate carboxylase induced by the accumulation of methylmalonyl CoA and an impairment of energy production due to a lack of vitamin B1, especially impairment of the activity of pyruvate dehydrogenase complex during an acute worsening of methylmalonic acidemia. Thus, in the treatment of methylmalonic acidemia, attention should be paid to vitamin B1 deficiency. During an acute worsening, vitamin B1 should be administered by intravenous drip injection.
Department of Pediatrics, School of Medicine, University of Tokushima, Tokushima.
Hiromichi
H
Ito
Kenji
K
Mori
Michinori
M
Ito
Etsuo
E
Naito
Ichiro
I
Yokota
Yasuhiro
Y
Kuroda
D001921:Brain / Q000473:pathology*; D006801:Humans; D007223:Infant; D007888:Leigh Disease / Q000175:diagnosis* / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D008764:Methylmalonic Acid / Q000097:blood*; D008765:Methylmalonyl-CoA Mutase / Q000378:metabolism; D013832:Thiamine Deficiency / Q000150:complications
D008764:Methylmalonic Acid; D008765:Methylmalonyl-CoA Mutase