Omentin-1 ameliorates pulmonary arterial hypertension by inhibiting endoplasmic reticulum stress through AMPKα signaling

BACKGROUND: Endothelial dysfunction of the pulmonary artery contributes to hypoxia-induced pulmonary arterial hypertension (PAH). Omentin-1, as a novel adipocytokine, plays an important protective role against cardiovascular diseases. However, the effect and underlying mechanisms of omentin-1 against PAH remain unclear.

METHODS: PAH was induced in SD (Sprague & Dawley) rats via a low-oxygen chamber for 4 weeks. Hemodynamic evaluation was undertaken using a PowerLab data acquisition system, and histopathological analysis was stained with hematoxylin and eosin (H&E). Endothelial function of pulmonary artery was assessed using wire myography.

RESULTS: We found that omentin-1 significantly improved pulmonary endothelial function in rats exposed to hypoxia and attenuated PAH. Mechanistically, we found that omentin-1 increased phosphorylated 5'‑adenosine monophosphate‑activated protein kinase (p‑AMPK) level and reduced endoplasmic reticulum (ER) stress and increased NO production in pulmonary artery from rats exposed to hypoxia. However, the effect of omentin-1 was abolished by treatment with AMPK inhibitor (Compound C).

CONCLUSIONS: Our results reveal a protective effect of omentin-1 in PAH via inhibiting ER stress through AMPKα signaling and provide an agent with translational potential for the treatment of PAH.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:46

Enthalten in:

Clinical and experimental hypertension (New York, N.Y. : 1993) - 46(2024), 1 vom: 31. März, Seite 2332695

Sprache:

Englisch

Beteiligte Personen:

Deng, Xinyu [VerfasserIn]
Luo, Hao [VerfasserIn]
He, Jing [VerfasserIn]
Deng, Wang [VerfasserIn]
Wang, Daoxin [VerfasserIn]

Links:

Volltext

Themen:

AMP-Activated Protein Kinases
AMPK
EC 2.7.11.31
Endoplasmic reticulum stress
Endothelial function
Journal Article
Omentin-1
Pulmonary arterial hypertension

Anmerkungen:

Date Completed 27.03.2024

Date Revised 27.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1080/10641963.2024.2332695

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370165926