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Cystinuria (SLC3A1) Australian Cattle Dog Type Overview

Cystinuria (SLC3A1) Australian Cattle Dog Type
US$ 75.00 RRP
US$ 67.50 REGISTERED USER PRICE
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Category: Urogenital (Associated with the Urinary and Genital Tracts)

Gene: SLC3A1

Variant Detected: Deletion 5bp

Severity: Scale 3 has a moderate degree of severity, as it is not a fatal disease, though it can decrease the quality of life.

Mode of Inheritance: Autosomal Recessive

Test Overview: Cystinuria was one of the first identified inborn defects of metabolism. It is an inherited defect of renal transport that included malabsorption of cystine and the dibasic amino acids ornithine, lysine and arginine, collectively known as COLA. In dogs it has been reported for the first time in 1823 and today it is known to affect more than 70 dog breeds. In the normally functioning kidney, amino acids and some other substances are filtered out of the blood, and then reclaimed from the urine. Malabsorption of COLA amino acids in the proximal renal tubules causes their high concentrations in the urine of the affected individual. Main problems are caused by low solubility of cystine in urine of acidic and neutral pH. High concentrations of cystine in urine and its low solubility leads to cystine crystals and bladder stones formation, known as uroliths. Uroliths in the urinary tract can result in stranguria, hematuria, urinary obstruction and renal failure with possible fatal outcome. Symptoms of disease include straining to urinate, frequent urination or inability to urinate. In Labrador retrievers both males and females are affected, but obstruction of urine flow is more common in males due to differences in anatomy and females tend to develop stones later than males. Dogs with cystinuria often have recurrent inflammation of the urinary tract and if not treated, urinary stones can cause urinary tract infections, kidney failure and even death.

Research Citation(s): Brons AK, Henthorn PS, Raj K, Fitzgerald CA, Liu J, Sewell AC, Giger U. SLC3A1 and SLC7A9 mutations in autosomal recessive and dominant canine cystinuria: A new classification system. J Vet Intern Med. 2013 Nov;27(6):1400-8. Henthorn, P., Giger, U. (2003.): Challenges to understanding cystinuria in dogs that are not Newfoundlands.

Associated Breed(s): Australian Cattle Dog,  Mixed Breed,