Menkes disease (MD) is an X-linked recessively inherited neurodegenerative disorder of copper (Cu) metabolism leading to death in early childhood. Symptoms are attributed to deficient activity of Cu-dependent enzymes. Limited experience has been reported concerning clinical and biochemical consequences of parenteral treatment with copper-(histidine)2-complex (Cu-His) in MD. Cu-His was administered in a 13-week-old boy with MD by daily intramuscular injections. After 6 weeks of therapy, Cu and caeruloplasmin in serum and Cu in CSF were normalized. The excessive dopamine level in CSF was corrected after 3 months of treatment. After 6 weeks of Cu supplementation, complete reduction of epileptic discharges, improved muscular tone and increased motor activities were observed. Developmental regression stopped and was replaced by a slight progression. Death at the age of 19 months was caused by septicaemia due to a fulminant urinary tract infection; there was no evidence of chronic Cu toxicity. These findings suggest that Cu-His supplementation may be a promising palliative treatment in MD.

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