Pimaric acid reduces vasoconstriction via BKCa channel activation and VDCC inhibition in rat pulmonary arterial smooth muscles

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Pulmonary vessels play a pivotal role in oxygen circulation. We previously demonstrated that pimaric acid (PiMA) activated large-conductance Ca2+-activated K+ (BKCa) channels and inhibited voltage-dependent Ca2+ channels (VDCCs). In the present study, PiMA attenuated vasoconstriction induced by high K+ or endothelin-1 in rat pulmonary arterial smooth muscles (PASMs). PiMA also reduced high K+-induced cytosolic [Ca2+] increase in PASM cells. PiMA increased BKCa currents and decreased VDCC currents. BKCa channels and VDCCs were formed by the α/β1 and α1C/α1D/β2/β3 subunits, respectively. These results indicate that PiMA induces vasorelaxation through the dual effects of BKCa channel activation and VDCC inhibition in PASMs.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:153

Enthalten in:

Journal of pharmacological sciences - 153(2023), 2 vom: 28. Okt., Seite 84-88

Sprache:

Englisch

Beteiligte Personen:

Ishida, Masashi [VerfasserIn]
Yamamura, Aya [VerfasserIn]
Fujiwara, Moe [VerfasserIn]
Amano, Taiki [VerfasserIn]
Ota, Mina [VerfasserIn]
Hikawa, Yukari [VerfasserIn]
Kondo, Rubii [VerfasserIn]
Suzuki, Yoshiaki [VerfasserIn]
Imaizumi, Yuji [VerfasserIn]
Yamamura, Hisao [VerfasserIn]

Links:

Volltext

Themen:

1C4QK22F9J
88R98Z71NI
Calcium Channels, L-Type
Ion channel
Journal Article
Pimaric acid
Potassium Iodide
Pulmonary artery

Anmerkungen:

Date Completed 31.08.2023

Date Revised 31.08.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.jphs.2023.08.001

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM361384955