2,8-Dihydroxyadenine Urolithiasis Type IA Overview

2,8-Dihydroxyadenine Urolithiasis Type IA
US$ 75.00 RRP

Category: Urinary system / Urologic - Associated with the kidneys, bladder, ureters and urethra

Gene: Adenine phosphoribosyltransferase (APRT) on chromosome 5

Variant Detected: Base Substitution c.260G>A p.Arg87Gln

Severity: Low-Moderate. This disease can cause some discomfort and/or dysfunction in the affected animal. It does not generally affect life expectancy.

Mode of Inheritance: Autosomal Recessive

Test Overview: Adenine phosphoribosyltransferase (APRT) is an enzyme involved in the purine salvage pathway, where it catalyzes the conversion of adenine and 5-phosphoribosyl-1-pyrophosphate to adenosine monophosphate [1]. In the absence of APRT, xanthine dehydrogenase (XDH) converts adenine into 2,8-dihydroxyadenine (2,8-DHA), a compound that is highly insoluble in urine. Acute kidney injury may occur from urinary tract obstruction by calculi, and chronic kidney disease is a common sequela caused by crystalline nephropathy. The age of onset varies, with many affected individuals remaining asymptomatic until adulthood.

Research Citation(s): Furrow et al. Mol Genet Metab, An APRT mutation is strongly associated with and likely causative for 2,8-dihydroxyadenine urolithiasis in dogs. (2014) 111;3, 399–403

Associated Breed(s): Native American Indian Dog,  Mixed Breed,