Document Detail


Abnormal copper metabolism in Menke's steely-hair syndrome.
MedLine Citation:
PMID:  481958     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Copper (Cu) metabolism was selectively studied in seven infants with Menke's steely-hair syndrome (SHS). A daily oral regimen of CuSO4 (584 microgram Cu/kg) and L-histidine (100 mg/kg) in three infants produced an increase in serum Cu concentrations ranging from 33-95% of normal, but without the formation of ceruloplasmin. Cohn serum protein fractionation after oral Cu/L-histidine loading showed a disproportionate accumulation of Cu in the albumin fraction (V). The electron spin resonance spectrum of fraction V showed a heightened signal for the SHS patients, suggesting that an increased concentration of a radical Cu species is present after oral loading. The Sephadex G-150 chromatographic profile of serum fraction V in SHS did not differ significantly from controls. These results suggest that, in SHS, Cu absorbed in the presence of L-histidine is in an abnormal complex involving albumin, which does not allow for holoceruloplasmin biosynthesis. Cu and ceruloplasmin concentrations in the cord blood specimen of an infant who went on to develop SHS were normal, a finding which may account for the transient period of seemingly normal development after birth in SHS patients. An almost 6-fold difference in mean Cu concentration was observed in SHS fibroblasts compared to controls. Fibroblast Cu concentration was elevated in one to two possible maternal heterozygotes, a finding which may permit diagnosis of the carrier state for some SHS heterozygotes.
Authors:
I T Lott; R Dipaolo; S S Raghavan; P Clopath; A Milunsky; W C Robertson; J N kanfer
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Pediatric research     Volume:  13     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  1979 Jul 
Date Detail:
Created Date:  1979-11-21     Completed Date:  1979-11-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  845-50     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Blood Proteins / analysis
Brain Diseases, Metabolic / metabolism*
Ceruloplasmin / analysis
Copper / administration & dosage,  blood,  metabolism*
Fetal Blood / analysis
Fibroblasts / metabolism
Histidine / administration & dosage
Humans
Infant
Infant, Newborn
Menkes Kinky Hair Syndrome / metabolism*
Chemical
Reg. No./Substance:
0/Blood Proteins; 71-00-1/Histidine; 7440-50-8/Copper; EC 1.16.3.1/Ceruloplasmin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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