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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-12-28
pubmed:abstractText
Mutations in the gene NPHS2 encoding podocin are responsible for a recessive form of steroid-resistant nephrotic syndrome (SRNS). The common phenotype is of massive proteinuria in early childhood that tends to progress to end-stage renal failure. Extrarenal manifestations have not been described. Twenty-two children with SRNS from six unrelated Arab families were found to be homozygous for the R138X mutation in NPHS2. Eighteen patients underwent cardiac evaluation at diagnosis of SRNS while they had normal BP and preserved renal function. Cardiac anomalies were detected in 16 (89%) children: Left ventricular hypertrophy in eight, pulmonary stenosis in six, discrete subaortic stenosis in two, and Ebstein anomaly and ventricular septal defect in one each. The remaining four affected individuals were assessed only once they had end-stage renal failure. They had severe left ventricular hypertrophy and experienced repeated episodes of heart failure. Two control groups were equally evaluated. The first consisted of 37 siblings without nephrotic syndrome, of whom only one carrier had a cardiac defect (P < 0.001). None of the second group, which included 22 children with persistent nephrotic syndrome as a result of other causes, had a cardiac anomaly (P < 0.001). Cardiac disorders in homozygotes for mutations in NPHS2 cannot be attributed to an association by chance or to a state of persistent nephrotic syndrome. Because human podocin mRNA is expressed in fetal heart, it is speculated that it may have a role in normal cardiac development. Cardiac evaluation is recommended at the time of diagnosis of SRNS due to mutations in podocin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1046-6673
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-31
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
The heart of children with steroid-resistant nephrotic syndrome: is it all podocin?
pubmed:affiliation
Division of Pediatric Nephrology, Shaare Zedek Medical Center, P.O. Box 3235, Jerusalem, Israel 91031. yaacov@md.huji.ac.il
pubmed:publicationType
Journal Article