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Titolo:
2 NEW MILD HOMOZYGOUS MUTATIONS IN GAUCHER-DISEASE PATIENTS - CLINICAL SIGNS AND BIOCHEMICAL ANALYSES
Autore:
CORMAND B; GRINBERG D; GORT L; FIUMARA A; BARONE R; VILAGELIU L; CHABAS A;
Indirizzi:
INST BIOQUIM CLIN,MEJIA LEQUERICA S-N EDIFICIO HELIOS 3,PLANTA BAIX BARCELONA 08028 SPAIN INST BIOQUIM CLIN BARCELONA 08028 SPAIN UNIV BARCELONA,DEPT GENET BARCELONA SPAIN UNIV CATANIA,PEDIAT CLIN CATANIA ITALY
Titolo Testata:
American journal of medical genetics
fascicolo: 4, volume: 70, anno: 1997,
pagine: 437 - 443
SICI:
0148-7299(1997)70:4<437:2NMHMI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN GLUCOCEREBROSIDASE GENE; ACID BETA-GLUCOSIDASE; POLYMORPHISMS; EXPRESSION; SEQUENCE; DNA;
Keywords:
GAUCHER DISEASE; MUTANT GLUCOCEREBROSIDASE; MILD MUTATIONS; GENOTYPE-PHENOTYPE CORRELATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
B. Cormand et al., "2 NEW MILD HOMOZYGOUS MUTATIONS IN GAUCHER-DISEASE PATIENTS - CLINICAL SIGNS AND BIOCHEMICAL ANALYSES", American journal of medical genetics, 70(4), 1997, pp. 437-443

Abstract

Gaucher disease (GD) is a lysosomal storage disorder resulting from impaired activity of lysosomal beta-glucocerebrosidase. More than 60 mutations have been described in the GBA gene. They have been classifiedas lethal, severe, and mild on the basis of the corresponding phenotype. The fact that most GD patients are compound heterozygous and that most type 1 patients bear the N370S allele, which by itself causes a mild phenotype, make it difficult to correlate the clinical signs with the mutations. Besides N370S, about 10 mild mutations have been described, but only one undoubtedly classified as mild was found at homozygosity. Here we report 2 novel mutations, I402T and V375L, at homozygosity in 2 adult Italian type 1 GD patients. Some properties of the I402Tfibroblast enzyme have been compared to those of the enzyme from cells of several N370S/ N370S patients. Analysis of the catalytic properties and heat stability as well as the response to phosphatidylserine and sphingolipid activator protein indicate a marked similarity between the 2 enzymes. The finding of another, unrelated patient bearing the I402T mutation (in this case as a compound heterozygote with mutation N370S) suggests that this allele might be quite frequent in the area ofSicily from where both patients originated. In conclusion, the phenotypic expression in the 2 homozygous patients presented here and the biochemical data for one of them allowed the classification of these mutations as mild thus extending the group of mild mutations found at homozygosity. Am. J. Med. Genet. 70:437-443, 1997. (C) 1997 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 15:34:29