Amine metabolism: A novel path to coronary artery vasospasm

D. J. Conklin, C. L. Boyce, M. B. Trent, P. J. Boor

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We hypothesized that allylamine (AA) induces subendocardial necrosis in mammals via coronary artery (CA) vasospasm. Additionally, AA toxicity is likely dependent on the enzyme semicarbazide-sensitive amine oxidase (SSAO), which is highly expressed in the aorta of rats and humans. We tested whether AA or acrolein (1, 10, 100, and 1000 μM), a highly reactive product of AA metabolism by SSAO, could contract CA or thoracic aorta (TA) in vitro and if the AA effects involved SSAO. AA or acrolein produced a similar pattern of responses in both CA and TA rings at 100 and 1000 μM, including (1) increased basal tension, (2) enhanced agonist-induced contraction (hypercontractility or vasospasm), (3) remarkable, agonist-induced slow wave vasomotion (vasospasm), and (4) irreversible reduction in vessel contractility after 1 mM exposure. Endothelium-dependent acetylcholine-induced relaxation was not altered during vasospasm in either vessel. Pretreatment with the SSAO inhibitor semicarbazide (1 mM; 10 min) prevented or significantly reduced the majority of AA's effects in both CA and TA rings and inhibited 100% of the SSAO activity present in rat TA and human CA and TA. We propose a two-step model for AA induction of CA vasospasm and resultant myocardial necrosis: (1) metabolism of AA to acrolein by coronary arterial SSAO activity and (2) acrolein induction of CA vasospasm independent of endothelial injury-a novel path.

Original languageEnglish (US)
Pages (from-to)149-159
Number of pages11
JournalToxicology and Applied Pharmacology
Volume175
Issue number2
DOIs
StatePublished - Sep 1 2001

Fingerprint

Allylamine
Coronary Vasospasm
Amine Oxidase (Copper-Containing)
Metabolism
Amines
Acrolein
Thoracic Aorta
Coronary Vessels
Rats
Necrosis
Mammals
Contracts
Acetylcholine
Endothelium
Toxicity
Aorta

Keywords

  • Allylamine (3-aminopropene)
  • Amine oxidase EC 1.4.3.6
  • Aorta
  • Contraction
  • Human coronary artery disease
  • Hypercontractility
  • Myocardial necrosis
  • Semicarbazide-sensitive amine oxidase
  • Tension oscillations
  • Vascular toxicity
  • Vasomotion
  • Vasospasm

ASJC Scopus subject areas

  • Pharmacology
  • Toxicology

Cite this

Amine metabolism : A novel path to coronary artery vasospasm. / Conklin, D. J.; Boyce, C. L.; Trent, M. B.; Boor, P. J.

In: Toxicology and Applied Pharmacology, Vol. 175, No. 2, 01.09.2001, p. 149-159.

Research output: Contribution to journalArticle

Conklin, D. J. ; Boyce, C. L. ; Trent, M. B. ; Boor, P. J. / Amine metabolism : A novel path to coronary artery vasospasm. In: Toxicology and Applied Pharmacology. 2001 ; Vol. 175, No. 2. pp. 149-159.
@article{bc13db41d14643c3869e3a1a52b52f32,
title = "Amine metabolism: A novel path to coronary artery vasospasm",
abstract = "We hypothesized that allylamine (AA) induces subendocardial necrosis in mammals via coronary artery (CA) vasospasm. Additionally, AA toxicity is likely dependent on the enzyme semicarbazide-sensitive amine oxidase (SSAO), which is highly expressed in the aorta of rats and humans. We tested whether AA or acrolein (1, 10, 100, and 1000 μM), a highly reactive product of AA metabolism by SSAO, could contract CA or thoracic aorta (TA) in vitro and if the AA effects involved SSAO. AA or acrolein produced a similar pattern of responses in both CA and TA rings at 100 and 1000 μM, including (1) increased basal tension, (2) enhanced agonist-induced contraction (hypercontractility or vasospasm), (3) remarkable, agonist-induced slow wave vasomotion (vasospasm), and (4) irreversible reduction in vessel contractility after 1 mM exposure. Endothelium-dependent acetylcholine-induced relaxation was not altered during vasospasm in either vessel. Pretreatment with the SSAO inhibitor semicarbazide (1 mM; 10 min) prevented or significantly reduced the majority of AA's effects in both CA and TA rings and inhibited 100{\%} of the SSAO activity present in rat TA and human CA and TA. We propose a two-step model for AA induction of CA vasospasm and resultant myocardial necrosis: (1) metabolism of AA to acrolein by coronary arterial SSAO activity and (2) acrolein induction of CA vasospasm independent of endothelial injury-a novel path.",
keywords = "Allylamine (3-aminopropene), Amine oxidase EC 1.4.3.6, Aorta, Contraction, Human coronary artery disease, Hypercontractility, Myocardial necrosis, Semicarbazide-sensitive amine oxidase, Tension oscillations, Vascular toxicity, Vasomotion, Vasospasm",
author = "Conklin, {D. J.} and Boyce, {C. L.} and Trent, {M. B.} and Boor, {P. J.}",
year = "2001",
month = "9",
day = "1",
doi = "10.1006/taap.2001.9238",
language = "English (US)",
volume = "175",
pages = "149--159",
journal = "Toxicology and Applied Pharmacology",
issn = "0041-008X",
publisher = "Academic Press Inc.",
number = "2",

}

TY - JOUR

T1 - Amine metabolism

T2 - A novel path to coronary artery vasospasm

AU - Conklin, D. J.

AU - Boyce, C. L.

AU - Trent, M. B.

AU - Boor, P. J.

PY - 2001/9/1

Y1 - 2001/9/1

N2 - We hypothesized that allylamine (AA) induces subendocardial necrosis in mammals via coronary artery (CA) vasospasm. Additionally, AA toxicity is likely dependent on the enzyme semicarbazide-sensitive amine oxidase (SSAO), which is highly expressed in the aorta of rats and humans. We tested whether AA or acrolein (1, 10, 100, and 1000 μM), a highly reactive product of AA metabolism by SSAO, could contract CA or thoracic aorta (TA) in vitro and if the AA effects involved SSAO. AA or acrolein produced a similar pattern of responses in both CA and TA rings at 100 and 1000 μM, including (1) increased basal tension, (2) enhanced agonist-induced contraction (hypercontractility or vasospasm), (3) remarkable, agonist-induced slow wave vasomotion (vasospasm), and (4) irreversible reduction in vessel contractility after 1 mM exposure. Endothelium-dependent acetylcholine-induced relaxation was not altered during vasospasm in either vessel. Pretreatment with the SSAO inhibitor semicarbazide (1 mM; 10 min) prevented or significantly reduced the majority of AA's effects in both CA and TA rings and inhibited 100% of the SSAO activity present in rat TA and human CA and TA. We propose a two-step model for AA induction of CA vasospasm and resultant myocardial necrosis: (1) metabolism of AA to acrolein by coronary arterial SSAO activity and (2) acrolein induction of CA vasospasm independent of endothelial injury-a novel path.

AB - We hypothesized that allylamine (AA) induces subendocardial necrosis in mammals via coronary artery (CA) vasospasm. Additionally, AA toxicity is likely dependent on the enzyme semicarbazide-sensitive amine oxidase (SSAO), which is highly expressed in the aorta of rats and humans. We tested whether AA or acrolein (1, 10, 100, and 1000 μM), a highly reactive product of AA metabolism by SSAO, could contract CA or thoracic aorta (TA) in vitro and if the AA effects involved SSAO. AA or acrolein produced a similar pattern of responses in both CA and TA rings at 100 and 1000 μM, including (1) increased basal tension, (2) enhanced agonist-induced contraction (hypercontractility or vasospasm), (3) remarkable, agonist-induced slow wave vasomotion (vasospasm), and (4) irreversible reduction in vessel contractility after 1 mM exposure. Endothelium-dependent acetylcholine-induced relaxation was not altered during vasospasm in either vessel. Pretreatment with the SSAO inhibitor semicarbazide (1 mM; 10 min) prevented or significantly reduced the majority of AA's effects in both CA and TA rings and inhibited 100% of the SSAO activity present in rat TA and human CA and TA. We propose a two-step model for AA induction of CA vasospasm and resultant myocardial necrosis: (1) metabolism of AA to acrolein by coronary arterial SSAO activity and (2) acrolein induction of CA vasospasm independent of endothelial injury-a novel path.

KW - Allylamine (3-aminopropene)

KW - Amine oxidase EC 1.4.3.6

KW - Aorta

KW - Contraction

KW - Human coronary artery disease

KW - Hypercontractility

KW - Myocardial necrosis

KW - Semicarbazide-sensitive amine oxidase

KW - Tension oscillations

KW - Vascular toxicity

KW - Vasomotion

KW - Vasospasm

UR - http://www.scopus.com/inward/record.url?scp=0035449023&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035449023&partnerID=8YFLogxK

U2 - 10.1006/taap.2001.9238

DO - 10.1006/taap.2001.9238

M3 - Article

C2 - 11543647

AN - SCOPUS:0035449023

VL - 175

SP - 149

EP - 159

JO - Toxicology and Applied Pharmacology

JF - Toxicology and Applied Pharmacology

SN - 0041-008X

IS - 2

ER -