High Dose of Estrogen Protects the Lungs from Ischemia-Reperfusion Injury by Downregulating the Angiotensin II Signaling Pathway

© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature..

We explored the sex difference in lung ischemia-reperfusion injury (LIRI) and the role and mechanism of estrogen (E2) and angiotensin II (Ang II) in LIRI. We established a model of LIRI in mice. E2, Ang II, E2 inhibitor (fulvestrant), and angiotensin II receptor blocker (losartan) were grouped for treatment. The lung wet/dry weight ratio, natural killer (NK) cells (by flow cytometry), neutrophils (by flow cytometry), expression of key proteins (by Western blot, immunohistochemistry, ELISA, and immunofluorescence), and expression of related protein mRNA (by qPCR) were detected. The ultrastructure of the alveolar epithelial cells was observed by transmission electron microscopy. We found that E2 and Ang II played an important role in the progression of LIRI. The two signaling pathways showed obvious antagonism, and E2 regulates LIRI in the different sexes by downregulating Ang II, leading to a better prognosis. E2 and losartan reduced the inflammatory cell infiltration in lung tissue and key inflammatory factors in serum while fulvestrant and Ang II had the opposite effect. The protective effect of E2 was related with AKT, p38, COX2, and HIF-1α.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

Inflammation - (2024) vom: 22. Feb.

Sprache:

Englisch

Beteiligte Personen:

Dai, Peng [VerfasserIn]
He, Jutong [VerfasserIn]
Wei, Yanhong [VerfasserIn]
Xu, Ming [VerfasserIn]
Zhao, Jinping [VerfasserIn]
Zhou, Xuefeng [VerfasserIn]
Tang, Hexiao [VerfasserIn]

Links:

Volltext

Themen:

Angiotensin II
Estrogen
Inflammation.
Journal Article
Lung ischemia–reperfusion injury

Anmerkungen:

Date Revised 22.02.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1007/s10753-024-01973-z

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368761436