J 2024

Angiotensin II constricts mouse iliac arteries: possible mechanism for aortic aneurysms

GADANEC, Laura Kate, Kristen Renee MCSWEENEY, Peter KUBATKA, Martin CAPRNDA, Ludovit GASPAR et. al.

Základní údaje

Originální název

Angiotensin II constricts mouse iliac arteries: possible mechanism for aortic aneurysms

Autoři

GADANEC, Laura Kate, Kristen Renee MCSWEENEY, Peter KUBATKA, Martin CAPRNDA, Ludovit GASPAR, Robert PROSECKÝ (203 Česká republika, domácí), Jozef DRAGASEK, Peter KRUŽLIAK (703 Slovensko, garant, domácí), Vasso APOSTOLOPOULOS a Anthony ZULLI

Vydání

MOLECULAR AND CELLULAR BIOCHEMISTRY, DORDRECHT, SPRINGER, 2024, 0300-8177

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30201 Cardiac and Cardiovascular systems

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.300 v roce 2022

Organizační jednotka

Lékařská fakulta

UT WoS

000964127200002

Klíčová slova anglicky

Abdominal aortic aneurysm; Angiotensin II; Angiotensin type 1 receptor; Angiotensin type 2 receptor; Vasoconstriction

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 12. 7. 2024 12:46, Mgr. Tereza Miškechová

Anotace

V originále

Abdominal aortic aneurysms (AAA) result from maladaptive remodeling of the vascular wall and reduces structural integrity. Angiotensin II (AngII) infusion has become a standard laboratory model for studying AAA initiation and progression. We determined the different vasoactive responses of various mouse arteries to Ang II. Ex vivo isometric tension analysis was conducted on 18-week-old male C57BL/6 mice (n = 4) brachiocephalic arteries (BC), iliac arteries (IL), and abdominal (AA) and thoracic aorta (TA). Arterial rings were mounted between organ hooks, gently stretched and an AngII dose response was performed. Rings were placed in 4% paraformaldehyde for immunohistochemistry analysis to quantify peptide expression of angiotensin type 1 (AT(1)R) and 2 receptors (AT(2)R) in the endothelium, media, and adventitia. Results from this study demonstrated vasoconstriction responses in IL were significantly higher at all AngII doses when compared to BC, and TA and AA responses (maximum constriction-IL: 68.64 +/- 5.47% vs. BC: 1.96 +/- 1.00%; TA: 3.13 +/- 0.16% and AA: 2.75 +/- 1.77%, p < 0.0001). Expression of AT(1)R was highest in the endothelium of IL (p < 0.05) and in the media and (p < 0.05) adventitia (p < 0.05) of AA. In contrast, AT(2)R expression was highest in endothelium (p < 0.05), media (p < 0.01, p < 0.05) and adventitia of TA. These results suggest that mouse arteries display different vasoactive responses to AngII, and the exaggerated response in IL arteries may play a role during AAA development.