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毛髪,爪において高濃度の無機ゲルマニウム(Ge)の蓄積を認あた51歳男性のGe中毒症を報告した。約2年間,無機ゲルマニウム含有健康飲料を約90-100mg/日,総量70g飲用し,末梢神経筋障害,るいそう,正球性正色素性貧血,腎障害を認めた。血中CK高値,髄液で蛋白細胞解離,腓腹神経生検で著明な軸索変性,腓骨筋生検で神経原性変化を認めた。本症例では,従来の報告に加え著明な自律神経障害および脳神経障害が認められた。
A 51-years-old man, taking beverage containing inorganic germanium (Ge), (90-100 mg/day, total 70 g) for two years, developed body weight loss, anemia, renal dysfunction, peripheral neuropathy,myopathy, autonomic dysfunctions and multiple cranial nerve palsies.
Serum CK, GOT, LDH, BUN, and creatinin levels were eleveted. The cerebrospinal fluid showed albuminocytologic dissociation.
Sural nerve biopsy showed axonal degeneration, and peroneal muscle biopsy showed neurogenic changes including type 2 fiber atrophy and ragged red fibers.
High level of Ge content was detected from the hair and nail by inductively coupled plasma atomic emission spectrometry.
Despite discontinuation of Ge taking, the pe-riperal neuropathy and autonomic dysfunction progressed. The symptoms remained unchanged even in the treatment with prednisolone. These findings suggest that inorganic Ge has a serious irreversible multiple system toxicity.
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