Open Veterinary Journal

Open Veterinary Journal

Peer-Reviewed Journal 
ISSN 2218-6050 (Online), ISSN 2226-4485 (Print) 

"Original Article"

Decrease of nitric oxide and increase in diastolic blood pressure are two events that affect renal function in dogs with pituitary dependent hyperadrenocorticism


Patricia N. Vidal(1,2,3), Diego D. Miceli(1,2,3), Elber Soler Arias(1), Elena D'Anna(1,2), Jorge D. García(1) and Victor Alejandro Castillo(1,*)


Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Clínica Médica de Pequeños Animales and U. de Endocrinología, Argentina

U. Diagnóstico por Imágenes, Hospital Escuela de Medicina Veterinaria, Argentina

Research fellow of CONICET. Av. Chorroarín 280, (1427) C. A. Buenos Aires, Argentina

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Abstract

Hyperadrenocorticism is a frequent disease in dogs. The excess of circulating cortisol affects different organs and metabolic pathways, producing severe adverse effects that endanger the animal’s life. Among these effects, hypertension and renal damage can be mentioned. A group of 20 dogs with pituitary dependent hyperadrenocorticism (PDH) and 12 control dogs were used to study the following parameters: cortisol and nitric oxide (NO nit/nit) concentrations, diastolic and systolic blood pressure, renal artery resistance index by Doppler ultrasound, the rate of glomerular filtration by radio-renogram excretion and the presence of proteins in urine. Dogs with PDH showed a significantly lower NO nit/nit (P<0.0001) than the controls and this correlated with high values of diastolic and systolic pressure (r = -0.87; P<0.0001 and r = -0.81; P<0.0001 respectively). Most dogs (80%) are hypertensive mainly due to an increase in diastolic pressure, which correlated positively with the UPC (r = 0.8; P<0.001) and negatively with the glomerular rate of filtration (r = -0.58; P=0.007). Systolic pressure only increased in 60% of the cases and did not correlate with the mentioned variables. In PDH the decrease of NO affects blood pressure. The diastolic pressure would seem to have the greatest impact on the kidneys, therefore its evaluation and control are important to avoid and/or control renal damage.

Keywords: Blood pression, Hyperadrenocorticism pituitary dependent, Nitric oxide, Renal function, Scintigraphy.

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Cite this paper:
Vidal, P.N., Miceli, D.D., Soler Arias, E., D'Anna, E., García, J.D. and Castillo, V.A. 2018. Decrease of nitric oxide and increase in diastolic blood pressure are two events that affect renal function in dogs with pituitary dependent hyperadrenocorticism. Open Vet. J. 8(1), 86-95.