Naslov
Genetic analysis – a diagnostic tool for primary hyperoxaluria type I

Autori
Milošević, Danko ; Rinat, Choni ; Batinić, Danica ; Frishberg, Yaacov

Izvornik
Pediatric nephrology (0931-041X) 17 (2002), 11; 896-898

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
primary hyperoxaluria type I; mutation analysis; alanine:glyoxylate aminotransferase; liver biopsy

Sažetak
Primary hyperoxaluria type I is an autosomal recessive metabolic disease in which excessive oxalates are formed by the liver and excreted by the kidneys, causing a wide spectrum of disease, ranging from renal failure in infancy to mere renal stones in late adulthood. The diagnosis may be suspected when clinical signs and increased urinary oxalate and glycolate excretion present, and is confirmed by the measurement of decreased alanine:glyoxylate aminotransferase activity in a liver sample. The enzymatic assay is not readily available to pediatric nephrologists in many parts of the world. We describe three families from Croatia in whom the diagnosis of primary hyperoxaluria was solely based on clinical findings that included nephrolithiasis and nephrocalcinosis accompanied by increased urinary oxalates and glycolate excretion, as enzymatic assays of liver samples could not be performed. Mutation analysis of the AGXT gene encoding the defective enzyme confirmed the diagnosis, revealing three alleles carrying the C156ins mutation and two the G630A mutation. Screening first-degree relatives for the relevant mutation disclosed an asymptomatic affected sibling. Mutation analysis of the AGXT gene is a non- invasive and accurate tool for the diagnosis of type I primary hyperoxaluria that may replace enzymatic assays of liver biopsies.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

POVEZANOST RADA