Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries
Acetylsalicylic acid (aspirin) exhibits a broad range of activities, including analgesic, antipyretic, and antiplatelet properties. Recent clinical studies also recommend aspirin prophylaxis in women with a high risk of pre-eclampsia, a major complication of pregnancy characterized by hypertension....
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-09-01
|
Series: | International Journal of Molecular Sciences |
Subjects: | |
Online Access: | https://www.mdpi.com/1422-0067/22/18/10162 |
id |
doaj-7526ce6d290a4ddb8dec1168794c1ab9 |
---|---|
record_format |
Article |
spelling |
doaj-7526ce6d290a4ddb8dec1168794c1ab92021-09-26T00:25:44ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-09-0122101621016210.3390/ijms221810162Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric ArteriesHelga Helgadóttir0Teresa Tropea1Sveinbjörn Gizurarson2Maurizio Mandalà3Department of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, 87036 Cosenza, ItalyDepartment of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, 87036 Cosenza, ItalyFaculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, IcelandDepartment of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, 87036 Cosenza, ItalyAcetylsalicylic acid (aspirin) exhibits a broad range of activities, including analgesic, antipyretic, and antiplatelet properties. Recent clinical studies also recommend aspirin prophylaxis in women with a high risk of pre-eclampsia, a major complication of pregnancy characterized by hypertension. We investigated the effect of aspirin on mesenteric resistance arteries and found outdiscovered the molecular mechanism underlying this action. Aspirin (10<sup>−12</sup>–10<sup>−6</sup> M) was tested on pregnant rat mesenteric resistance arteries by a pressurized arteriography. Aspirin was investigated in the presence of several inhibitors of: (a) nitric oxide synthase (L-NAME 2 × 10<sup>−4</sup> M); (b) cyclooxygenase (Indomethacin, 10<sup>−5</sup> M); (c) Ca<sup>2+</sup>-activated K<sup>+</sup> channels (Kca): small conductance (SKca, Apamin, 10<sup>−7</sup> M), intermediate conductance (IKca, TRAM34, 10<sup>−5</sup> M), and big conductance (BKca, paxilline, 10<sup>−5</sup> M); and (d) endothelial-derived hyperpolarizing factor (high KCl, 80 mM). Aspirin caused a concentration-dependent vasodilation. Aspirin-vasodilation was abolished by removal of endothelium or by high KCl. Furthermore, preincubation with either apamin plus TRAM-34 or paxillin significantly attenuated aspirin vasodilation (<i>p</i> < 0.05). For the first time, we showed that aspirin induced endothelium-dependent vasodilation in mesenteric resistance arteries through the endothelial-derived hyperpolarizing factor (EDHF) and calcium-activated potassium channels. By activating this molecular mechanism, aspirin may lower peripheral vascular resistance and be beneficial in pregnancies complicated by hypertension.https://www.mdpi.com/1422-0067/22/18/10162endothelial cellssmooth muscle cellsrelaxationpre-eclampsiahypertensioncalcium-activated potassium channels |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Helga Helgadóttir Teresa Tropea Sveinbjörn Gizurarson Maurizio Mandalà |
spellingShingle |
Helga Helgadóttir Teresa Tropea Sveinbjörn Gizurarson Maurizio Mandalà Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries International Journal of Molecular Sciences endothelial cells smooth muscle cells relaxation pre-eclampsia hypertension calcium-activated potassium channels |
author_facet |
Helga Helgadóttir Teresa Tropea Sveinbjörn Gizurarson Maurizio Mandalà |
author_sort |
Helga Helgadóttir |
title |
Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries |
title_short |
Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries |
title_full |
Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries |
title_fullStr |
Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries |
title_full_unstemmed |
Endothelium-Derived Hyperpolarizing Factor (EDHF) Mediates Acetylsalicylic Acid (Aspirin) Vasodilation of Pregnant Rat Mesenteric Arteries |
title_sort |
endothelium-derived hyperpolarizing factor (edhf) mediates acetylsalicylic acid (aspirin) vasodilation of pregnant rat mesenteric arteries |
publisher |
MDPI AG |
series |
International Journal of Molecular Sciences |
issn |
1661-6596 1422-0067 |
publishDate |
2021-09-01 |
description |
Acetylsalicylic acid (aspirin) exhibits a broad range of activities, including analgesic, antipyretic, and antiplatelet properties. Recent clinical studies also recommend aspirin prophylaxis in women with a high risk of pre-eclampsia, a major complication of pregnancy characterized by hypertension. We investigated the effect of aspirin on mesenteric resistance arteries and found outdiscovered the molecular mechanism underlying this action. Aspirin (10<sup>−12</sup>–10<sup>−6</sup> M) was tested on pregnant rat mesenteric resistance arteries by a pressurized arteriography. Aspirin was investigated in the presence of several inhibitors of: (a) nitric oxide synthase (L-NAME 2 × 10<sup>−4</sup> M); (b) cyclooxygenase (Indomethacin, 10<sup>−5</sup> M); (c) Ca<sup>2+</sup>-activated K<sup>+</sup> channels (Kca): small conductance (SKca, Apamin, 10<sup>−7</sup> M), intermediate conductance (IKca, TRAM34, 10<sup>−5</sup> M), and big conductance (BKca, paxilline, 10<sup>−5</sup> M); and (d) endothelial-derived hyperpolarizing factor (high KCl, 80 mM). Aspirin caused a concentration-dependent vasodilation. Aspirin-vasodilation was abolished by removal of endothelium or by high KCl. Furthermore, preincubation with either apamin plus TRAM-34 or paxillin significantly attenuated aspirin vasodilation (<i>p</i> < 0.05). For the first time, we showed that aspirin induced endothelium-dependent vasodilation in mesenteric resistance arteries through the endothelial-derived hyperpolarizing factor (EDHF) and calcium-activated potassium channels. By activating this molecular mechanism, aspirin may lower peripheral vascular resistance and be beneficial in pregnancies complicated by hypertension. |
topic |
endothelial cells smooth muscle cells relaxation pre-eclampsia hypertension calcium-activated potassium channels |
url |
https://www.mdpi.com/1422-0067/22/18/10162 |
work_keys_str_mv |
AT helgahelgadottir endotheliumderivedhyperpolarizingfactoredhfmediatesacetylsalicylicacidaspirinvasodilationofpregnantratmesentericarteries AT teresatropea endotheliumderivedhyperpolarizingfactoredhfmediatesacetylsalicylicacidaspirinvasodilationofpregnantratmesentericarteries AT sveinbjorngizurarson endotheliumderivedhyperpolarizingfactoredhfmediatesacetylsalicylicacidaspirinvasodilationofpregnantratmesentericarteries AT mauriziomandala endotheliumderivedhyperpolarizingfactoredhfmediatesacetylsalicylicacidaspirinvasodilationofpregnantratmesentericarteries |
_version_ |
1717366206528225280 |