β-adrenoceptor subtypes in the atrioventricular conducting system and myocardium of spontaneously hypertensive rats

Effects of angiotensin-converting enzyme inhibition by perindopril

Janine M. Matthews, Peter Molenaar, Roger J. Summers

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Quantitative autoradiography was used to determine the density and distribution of β1- and β2-adrenoceptors in the atrioventricular (AV) conducting system and surrounding myocardium of spontaneously hypertensive rats (SHR) after chronic infusion of perindopril (1 mg/kg/day) for 14 days by osmotic mini-pumps. Systolic blood pressure (SBP) was measured for a period of 4 weeks (2 weeks before and 2 weeks during perindopril infusion) in control and treated animals. Animals infused with vehicle (water) had a mean SBP of 248 mm Hg (measured on day 29); animals treated with perindopril had lower SBP (121 mm Hg, day 29). Perindopril treatment also prevented development of cardiac hypertrophy in SHR. β-Adrenoceptor densities were measured in the AV node, His bundle, left and right bundle branches (LB, BB), interventricular and interatrial septa (IVS, IAS), mitral valve (MV), right papillary muscle, left and right ventricles (LV, RV), left and right atria (LA, RA), and apex. Perindopril produced no significant change in β-adrenoceptors in any cardiac region examined. The results suggest that under experimental conditions in which perindopril treatment prevented cardiac hypertrophy and decreased SBP, there was no significant interaction between the renin-angiotensin system (RAS) and β-adrenoceptor system in rat heart.

Original languageEnglish
Pages (from-to)691-697
Number of pages7
JournalJournal of Cardiovascular Pharmacology
Volume23
Issue number5
DOIs
Publication statusPublished - 1 Jan 1994

Keywords

  • Angiotensin-converting enzyme inhibition
  • Autoradiography, β1- and β2-adrenoceptors
  • Cardiac hypertrophy
  • Receptor regulation
  • Spontaneously hypertensive rat

Cite this

@article{e2946336c3ef4c71bf00da75c44b328f,
title = "β-adrenoceptor subtypes in the atrioventricular conducting system and myocardium of spontaneously hypertensive rats: Effects of angiotensin-converting enzyme inhibition by perindopril",
abstract = "Quantitative autoradiography was used to determine the density and distribution of β1- and β2-adrenoceptors in the atrioventricular (AV) conducting system and surrounding myocardium of spontaneously hypertensive rats (SHR) after chronic infusion of perindopril (1 mg/kg/day) for 14 days by osmotic mini-pumps. Systolic blood pressure (SBP) was measured for a period of 4 weeks (2 weeks before and 2 weeks during perindopril infusion) in control and treated animals. Animals infused with vehicle (water) had a mean SBP of 248 mm Hg (measured on day 29); animals treated with perindopril had lower SBP (121 mm Hg, day 29). Perindopril treatment also prevented development of cardiac hypertrophy in SHR. β-Adrenoceptor densities were measured in the AV node, His bundle, left and right bundle branches (LB, BB), interventricular and interatrial septa (IVS, IAS), mitral valve (MV), right papillary muscle, left and right ventricles (LV, RV), left and right atria (LA, RA), and apex. Perindopril produced no significant change in β-adrenoceptors in any cardiac region examined. The results suggest that under experimental conditions in which perindopril treatment prevented cardiac hypertrophy and decreased SBP, there was no significant interaction between the renin-angiotensin system (RAS) and β-adrenoceptor system in rat heart.",
keywords = "Angiotensin-converting enzyme inhibition, Autoradiography, β1- and β2-adrenoceptors, Cardiac hypertrophy, Receptor regulation, Spontaneously hypertensive rat",
author = "Matthews, {Janine M.} and Peter Molenaar and Summers, {Roger J.}",
year = "1994",
month = "1",
day = "1",
doi = "10.1097/00005344-199405000-00001",
language = "English",
volume = "23",
pages = "691--697",
journal = "Journal of Cardiovascular Pharmacology",
issn = "0160-2446",
publisher = "Lippincott Williams & Wilkins",
number = "5",

}

β-adrenoceptor subtypes in the atrioventricular conducting system and myocardium of spontaneously hypertensive rats : Effects of angiotensin-converting enzyme inhibition by perindopril. / Matthews, Janine M.; Molenaar, Peter; Summers, Roger J.

In: Journal of Cardiovascular Pharmacology, Vol. 23, No. 5, 01.01.1994, p. 691-697.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - β-adrenoceptor subtypes in the atrioventricular conducting system and myocardium of spontaneously hypertensive rats

T2 - Effects of angiotensin-converting enzyme inhibition by perindopril

AU - Matthews, Janine M.

AU - Molenaar, Peter

AU - Summers, Roger J.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Quantitative autoradiography was used to determine the density and distribution of β1- and β2-adrenoceptors in the atrioventricular (AV) conducting system and surrounding myocardium of spontaneously hypertensive rats (SHR) after chronic infusion of perindopril (1 mg/kg/day) for 14 days by osmotic mini-pumps. Systolic blood pressure (SBP) was measured for a period of 4 weeks (2 weeks before and 2 weeks during perindopril infusion) in control and treated animals. Animals infused with vehicle (water) had a mean SBP of 248 mm Hg (measured on day 29); animals treated with perindopril had lower SBP (121 mm Hg, day 29). Perindopril treatment also prevented development of cardiac hypertrophy in SHR. β-Adrenoceptor densities were measured in the AV node, His bundle, left and right bundle branches (LB, BB), interventricular and interatrial septa (IVS, IAS), mitral valve (MV), right papillary muscle, left and right ventricles (LV, RV), left and right atria (LA, RA), and apex. Perindopril produced no significant change in β-adrenoceptors in any cardiac region examined. The results suggest that under experimental conditions in which perindopril treatment prevented cardiac hypertrophy and decreased SBP, there was no significant interaction between the renin-angiotensin system (RAS) and β-adrenoceptor system in rat heart.

AB - Quantitative autoradiography was used to determine the density and distribution of β1- and β2-adrenoceptors in the atrioventricular (AV) conducting system and surrounding myocardium of spontaneously hypertensive rats (SHR) after chronic infusion of perindopril (1 mg/kg/day) for 14 days by osmotic mini-pumps. Systolic blood pressure (SBP) was measured for a period of 4 weeks (2 weeks before and 2 weeks during perindopril infusion) in control and treated animals. Animals infused with vehicle (water) had a mean SBP of 248 mm Hg (measured on day 29); animals treated with perindopril had lower SBP (121 mm Hg, day 29). Perindopril treatment also prevented development of cardiac hypertrophy in SHR. β-Adrenoceptor densities were measured in the AV node, His bundle, left and right bundle branches (LB, BB), interventricular and interatrial septa (IVS, IAS), mitral valve (MV), right papillary muscle, left and right ventricles (LV, RV), left and right atria (LA, RA), and apex. Perindopril produced no significant change in β-adrenoceptors in any cardiac region examined. The results suggest that under experimental conditions in which perindopril treatment prevented cardiac hypertrophy and decreased SBP, there was no significant interaction between the renin-angiotensin system (RAS) and β-adrenoceptor system in rat heart.

KW - Angiotensin-converting enzyme inhibition

KW - Autoradiography, β1- and β2-adrenoceptors

KW - Cardiac hypertrophy

KW - Receptor regulation

KW - Spontaneously hypertensive rat

UR - http://www.scopus.com/inward/record.url?scp=0028327441&partnerID=8YFLogxK

U2 - 10.1097/00005344-199405000-00001

DO - 10.1097/00005344-199405000-00001

M3 - Article

VL - 23

SP - 691

EP - 697

JO - Journal of Cardiovascular Pharmacology

JF - Journal of Cardiovascular Pharmacology

SN - 0160-2446

IS - 5

ER -