RGD Reference Report - Platelet-activating factor acetylhydrolase gene mutation in Japanese children with Escherichia coli O157-associated hemolytic uremic syndrome. - Rat Genome Database

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Platelet-activating factor acetylhydrolase gene mutation in Japanese children with Escherichia coli O157-associated hemolytic uremic syndrome.

Authors: Xu, H  Iijima, K  Shirakawa, T  Shiozawa, S  Miwa, M  Yamaoka, K  Kawamura, N  Nakamura, H  Yoshikawa, N 
Citation: Xu H, etal., Am J Kidney Dis. 2000 Jul;36(1):42-6.
RGD ID: 7257516
Pubmed: PMID:10873870   (View Abstract at PubMed)
DOI: DOI:10.1053/ajkd.2000.8262   (Journal Full-text)

Platelet-activating factor (PAF) may be involved in the pathogenesis of Escherichia coli O157-associated hemolytic uremic syndrome (HUS). PAF is degraded to inactive products by PAF acetylhydrolase. In this study, we investigated whether a PAF acetylhydrolase gene mutation (G-->T transversion at position 994) is involved in HUS in Japanese children. A point mutation in the PAF acetylhydrolase gene (G994T) was identified using polymerase chain reaction in 50 Japanese children with E coli O157-associated HUS and 100 healthy Japanese. We then determined the relationship between the PAF acetylhydrolase G994T gene mutation and clinical features of HUS. There was no difference in genotype and allele frequencies between patients with HUS and healthy controls. The mean duration of oligoanuria was significantly longer in patients with the GT genotype than in those with the GG genotype (P = 0.012). Although 11 of 15 patients (73%) heterozygous for the mutant allele (GT) required dialysis, only 13 of the 35 wild-type homozygotes (GG; 37%) required dialysis (P = 0. 030). Mean plasma PAF acetylhydrolase activity was significantly less in patients with the GT genotype than in those with the GG genotype (P < 0.0001). In conclusion, we have shown an association between the G994T PAF acetylhydrolase gene mutation and the severity of renal damage in E coli O157-associated HUS. Our study suggests that analysis of the PAF acetylhydrolase gene mutation in Japanese children with E coli O157-associated HUS may allow the prediction of the severity of HUS.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
hemolytic-uremic syndrome severityIAGP 7257516associated with Escherichia coli Infections and DNA:transversion mutation: :994 G>T (human)RGD 
hemolytic-uremic syndrome severityISOPLA2G7 (Homo sapiens)7257516; 7257516associated with Escherichia coli Infections and DNA:transversion mutation: :994 G>T (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Pla2g7  (phospholipase A2 group VII)

Genes (Mus musculus)
Pla2g7  (phospholipase A2, group VII (platelet-activating factor acetylhydrolase, plasma))

Genes (Homo sapiens)
PLA2G7  (phospholipase A2 group VII)


Additional Information