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Chronic pressure-natriuresis relationship in dogs with inherited essential hypertension. Am J Hypertens 1993 Nov;6(11 Pt 1):960-7 PMID: 8305171

Pubmed ID

8305171

Abstract

A genetic model of essential hypertension in the dog was studied to describe the phenotypic expression of the arterial pressure, as well as to determine the relationship between mean arterial blood pressure (MAP), hormone, and renal excretory responses to four different levels of sodium intake (5, 40, 120, 240 mEq/day) delivered intravenously and isotonically. This model was developed at the University of Pennsylvania (U/Penn) and termed Pennsylvania hypertensive dogs (PHD). The MAP was recorded beat-by-beat, 24 h/day, in 16 dogs. Water and sodium balances were determined daily for 4 days at each level of intake and blood samples were collected on the last day of each salt step for analysis of plasma renin activity (PRA), atrial natriuretic peptide (ANP), aldosterone (ALDO), and vasopressin (AVP). After the study, the dogs were designated as hypertensive (PHD-HT) when the 24-h average MAP was greater than 110 mm Hg and systolic pressure was greater than 160 mm Hg. Dogs that failed to meet both criteria were designated as normotensive genetic controls (PHD-NT). Although sodium was retained during the first day of each increase of salt intake in both groups, a return to balance was observed within the 4 days. There was no apparent change in the slope of the chronic renal function curve in either group of PHD studied, although the PHD-HT exhibit a curve shifted to a higher level of MAP. Plasma hormone levels in both groups of PHD studied responded in a manner similar to normal mongrel dogs with reductions of PRA, ALDO, elevations of ANP, and no change in AVP.(ABSTRACT TRUNCATED AT 250 WORDS)

Author List

Papanek PE, Bovee KC, Skelton MM, Cowley AW Jr

Author

Paula Papanek PhD, MPT, LAT, FACSM Associate Professor & Director of Exercise Science in the Exercise Science & Physical Therapy department at Marquette University




Scopus

2-s2.0-0027527858   6 Citations

MESH terms used to index this publication - Major topics in bold

Aldosterone
Analysis of Variance
Animals
Arginine Vasopressin
Atrial Natriuretic Factor
Blood Pressure
Circadian Rhythm
Dogs
Female
Hemodynamics
Hypertension
Infusions, Intravenous
Male
Natriuresis
Renin
Sodium
jenkins-FCD Prod-310 bff9d975ec7f2d302586822146c2801dd4449aad