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  • Author or Editor: Helio S. Autran de Morais x
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Objective

To evaluate clinical and pathologic findings in Golden Retrievers with renal dysplasia.

Design

Retrospective study.

Animals

12 young Golden Retrievers with chronic renal disease.

Procedure

Medical records of affected dogs were evaluated on the basis of clinical findings, laboratory test results, and histologic findings.

Results

Common clinical findings were vomiting, anorexia, weight loss, polydipsia, and polyuria. Common laboratory findings were azotemia, hyperphosphatemia, hypercholesterolemia, isosthenuria, proteinuria, hypercalcemia, and nonregenerative anemia. Many affected dogs also had urinary tract infections, and some were hypertensive. Renal lesions consisted of moderate-to-severe interstitial fibrosis and mild-to-moderate lymphoplasmacytic interstitial inflammation. Cystic glomerular atrophy and periglomerular fibrosis were prominent features in most affected dogs. Fetal lobulation of glomeruli, adenomatoid hyperplasia of collecting tubule epithelium, and primitive mesenchymal connective tissue were histologic features suggestive of renal dysplasia.

Clinical Implications

Renal dysplasia should be suspected in Golden Retrievers < 3 years old with clinical findings and laboratory results indicative of renal disease. (J Am Vet Med Assoc 1996;209:792–797)

Free access
in Journal of the American Veterinary Medical Association

Abstract

Objective—To determine the nucleotide and amino acid sequence of atrial natriuretic peptide (ANP) in cats and its typical regions of cardiac expression.

Animals—5 healthy adult mixed-breed cats.

Procedure—Total RNA was extracted from samples obtained from the left and right atrium, left and right ventricle, and interventricular septum of each cat. The RNA was used to produce cDNA for sequencing and northern blot analysis. Genomic DNA was extracted from feline blood samples. Polymerase chain reaction primers designed from consensus sequences of other species were used to clone and sequence the feline ANP gene.

Results—The feline ANP gene consists of 1,072 nucleotides. It consists of 3 exons (123, 327, and 12 nucleotides) separated by 2 introns (101 and 509 nucleotides). It has several typical features of eukaryotic genes and a putative steroid-response element located within the second intron. Preprohormone ANP consists of 153 amino acids. The amino acid sequence of the active form of feline ANP (ANP-30) is identical to that of equine, bovine, and ovine ANP-30 and differs from that of human, canine, and porcine ANP-28 only by 2 carboxy-terminal arginine residues. The ANP mRNA was detected only in the left and right atria.

Conclusions and Clinical Relevance—The genetic and protein structure and principal regions of cardiac expression of feline ANP are similar to those of other species. Results of this study should be helpful in future studies on the natriuretic response in cats to diseases that affect cardiovascular function. (Am J Vet Res 2002;63:236–240)

Full access
in American Journal of Veterinary Research