Linked Life Data

2043465

Source:http://linkedlifedata.com/resource/pubmed/id/2043465

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-7-15
pubmed:abstractText
A category of spectrin alpha I domain variants are manifested by the increase of the alpha I 74 kDa fragment at the expense of the parent 80 kDa fragment following partial tryptic digestion. We describe a particular case of alpha I/74 abnormality in a Tunisian family. The propositus was severely ill and had an elliptopoikilocytosis. To the contrary, his father, who carried the same alpha I/74 variant, displayed no clinical signs and a few elliptocytes. The increase of the alpha I 74 kDa fragment was more pronounced in the propositus than in his father. Unexpectedly, the spectrin content was reduced to similar (and limited) extents in both of them, and the father displayed nearly as pronounced an increase of the spectrin dimer percentage as the propositus following low ionic strength extraction. In vitro spectrin dimer reconstitution experiments indicated that the primary mutation was located in the alpha-chain itself (not in the beta-chain as is the case in some alpha I/74 mutants). Following polymerase chain reaction (PCR) amplification, cloning and sequencing of exon 2 of spectrin alpha-gene in the father, we found the G----A substitution at position 2 of codon 22 (CGT----CAT; Arg----His). This mutation has been recently discovered in a family of French descent. Dot blot hybridization confirmed that the substitution was transmitted with the alpha I/74 abnormality. As previously shown, the enhancement of its expression level in the propositus, with respect to the father, was accounted for by the presence of a factor carried by the alpha-spectrin allele in trans and transmitted by the mother.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0007-1048
pubmed:author
pubmed:issnType
Print
pubmed:volume
78
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
108-13
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Occurrence of the alpha I 22 Arg----His (CGT----CAT) spectrin mutation in Tunisia: potential association with severe elliptopoikilocytosis.
pubmed:affiliation
CNRS URA 1171, Faculté de Médecine Grange-Blanche, Lyon, France.
pubmed:publicationType
Journal Article, Case Reports, Research Support, Non-U.S. Gov't