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Brain and Nerve No to Shinkei Volume 45, Issue 1 （January 1993）

Brain and Nerve 脳と神経 45巻1号（1993年1月発行）

Japanese English

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Neurological CPC・1

聴力低下，外眼筋麻痺，四肢筋力低下を呈した46歳女性 Fourty-six-year-old Woman with Progressive External Ophthalmoplegia and Limb Weakness 山本剛司 ¹ , 後藤啓五 ¹ , 佐藤猛 ¹ , 塩津英俊 ² , 桑原紀之 ² , 長岡正範 ¹ , 水野美邦 ¹ Takeshi Yamamoto ¹ , Keigo Gotoh ¹ , Takeshi Sato ¹ , Hidetoshi Shiotsu ² , Noriyuki Kuwabara ² , Masanori Nagaoka ¹ , Yoshikuni Mizuno ¹ ¹順天堂大学医学部脳神経内科 ²順天堂大学医学部第一病理 ¹Departments of Neurology Juntendo University School of Medicine ²Departments of Pathology Juntendo University School of Medicine キーワード： mitochondrial encephalomyopathy , Kearns-Sayre syndrome , mitochondrial DNA , Leukoaraiosis Keyword: mitochondrial encephalomyopathy , Kearns-Sayre syndrome , mitochondrial DNA , Leukoaraiosis pp.85-92

発行日 1993年1月1日 Published Date 1993/1/1

DOI https://doi.org/10.11477/mf.1406900437

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Abstract 文献概要
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症例呈示

　症例　R．K．46歳，女，主婦（ID 90-2091）。

　主訴　眼瞼下垂，聴力低下，筋力低下。

We report a 46-year-old female who presented progressive ophthalmoplegia and limb weakness. She was well until the age of 15 years when there was an onset of bilateral deafness. She became completely deaf by 20 years of age. She noted an onset of weakness in her legs when she was 27-year -old, and of ptosis at 34 years of age. She was admitted to our hospital when she was 41-year-old. Neurological examination revealed near total ophthalmoplegia, bilateral ptosis, dysphagia, genera-lized muscle atrophy and weakness of approximate-ly 4/5 degree, facial grimacing, athetotic move-ments in four limbs. Laboratory examinations revealed increase in blood lactate and pyruvate levels and diffuse low density change in the cerebral white matter in CT scans. She was thought to have a mitochondrial encephalomyopathy. She was dis-charged for follow-up, but her clinical course wasthat of a relentless deterioration. She was readmit-ted to our service in December 1989. She showed further progress in her weakness and muscle atro-phy. Otherwise neurological examination was essen-tially similar to the previous one. Her cranial CT scans showed low density changes in striatum, thalamus and midbrain in addition to the white matter. Enzyme activities of the electron transport complexes revealed a moderate decrease in the succinatecytochrome c reductase activity, and the Southern blot analysis of mtDNA revealed multiple deletions in mitochondrial genomes. Two months after her admission, she developed bronchopneu-monia, and expired on March 13th, 1990.

Post-mortem examination revealed diffuse pallor of myeline in the cerebral white matter in K-B staining. A marked neuronal loss and gliosis were observed in putamen bilaterally. Skeletal muscles showed typical changes of mitochondrial myopath-ies with ragged-red fibers in Gomori-Trichrome staining, and crystalline inclusion bodies by electron microscopic observation. Some neurogenic atro-phies were also seen. Oculomotor nuclei appeared intact. It was thought that she had an incomplete form of Kearns-Sayre syndrome. The patient was discussed in a neurological CPC of the departments of Neurology and Pathology of Juntendo University School of Medicine.