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• Vol.43 No.5
• CLINICA NEUROL, 43: 253−257, 2003
• Vol.43 No.5 contents

Case Report

Very-long-chain acyl-CoA dehydrogenase deficiency presenting with recurrent rhabdomyolysis in an adult

Hitoshi Hamano, M.D.¹⁾, Yukito Shinohara, M.D.²⁾, Shunya Takizawa, M.D.²⁾, Kentaro Tokuoka, M.D.²⁾, Shoji Kazahari, M.D.¹⁾, Hiroyuki Mandokoro, M.D.¹⁾ and Akira Sato, M.D.¹⁾

¹⁾Department of Neurology, Institute of Neurology, Eastern Japan Medical Center
²⁾Department of Neurology, Tokai University School of Medicine

We report a 30-year-old man with very-long-chain acyl-coenzyme A deficiency presenting recurrent rhabdomyolysis. Since the age of 18-year-old, he had noticed recurrent episodes of exercise induced limb muscle pain, limb weakness and dark colored urine. At 29-year-old, he developed the same symptoms, and was referred to our hospital for further examinations under a diagnosis of recurrent rhabdomyolysis. He had no history of trauma, administration of drugs, infections and other factors causing rhabdomyolysis. There were no similar cases in his household. Neurological examinations on admission revealed no abnormal findings. Routine laboratory findings only showed mildly elevated levels of muscle-origin enzymes including CK and aldolase. Ischemic forearm exercise test showed normal levels of lactate and pyruvate in resting state, and normal response after exercise. Organic acids in urine at asymptomatic period were normal. Total carnitine and acyl-carnitine levels in serum were low. Electrospray tandem mass spectrometry in dried blood spots and serum identified elevated level of tetradecenoic acid (C14: 1), and palmitoyl-CoA dehydrogenase activity of lymphocytes was deficient. Based on these data, we made a diagnosis of very-long-chain acyl-coenzyme A (VLCAD) deficiency in this patient.
Several reports showed that muscular form (adult onset form) of VLCAD deficiency demonstrated recurrent rhabdomyolysis, but true 'adult-onset' case with VLCAD deficiency have been rarely reported. We emphasize that muscular form of VLCAD deficiency should be regarded as one of the causes of recurrent rhabodomyolysis in adult.

(CLINICA NEUROL, 43: 253−257, 2003)
key words: very-long-chain acyl-coenzyme A dehydrogenase (VLCAD), adult onset, rhabdomyolysis, myoglobinuria

(Received: 2-Dec-02)