Menkes disease: Oral administration of glyoxal-bis(N(4)-methylthiosemicarbazonato)-copper(II) rescues the macular mouse

Mitsutoshi Munakata, Hiroko Kodama, Norihiko Tani, Kazuhiko Kimura, Hideyo Takahashi, Kazuo Maruyama, Yoshimasa Sakamoto, Shigeo Kure

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Background: Menkes disease is a copper metabolism disorder caused by mutations in ATP7A, a copper-transporting P-type ATPase. In this study, oral copper supplementation via glyoxal-bis(N(4)-methylthiosemicarbazonato)-copper(II) (CuGTSM), a lipophilic copper complex, was investigated in male hemizygous macular (MoMl/y) mice, a mouse model of Menkes disease. Methods: CuGTSM was administered by oral gavage on postnatal days 5, 8, 11, 17, 23, and 32. The copper levels in the organs and serum, copper-dependent enzyme activities in the brain, and ceruloplasmin (Cp) activity in the serum were measured at 15 days and 3 and 8 months of age. Histological analysis of the intestines and the rotarod test were also performed. Results: CuGTSM treatment extended the lifespan of MoMl/y mice and partly restored the copper concentrations and cytochrome oxidase and DBH activities in the brain; however, the rotarod test showed impaired motor performance. The treatment also increased copper concentrations and Cp activity in the serum. In suckling MoMl/y mice, CuGTSM treatment transiently induced diarrhea accompanied by copper accumulation and altered villus morphology in the ileum. Conclusion: Oral administration of CuGTSM extended the lifespan of MoMl/y mice. Oral administration is attractive, but pharmaceutical studies are needed to reduce the adverse enteral effects.

Original languageEnglish
JournalPediatric Research
DOIs
Publication statusAccepted/In press - 2018 Jan 1

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

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