Decreased smooth muscle cells and fibrous thickening of the tunica media in peripheral pulmonary artery stenosis in Alagille syndrome.
Cardiovasc Pathol
; : 107677, 2024 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-39069193
ABSTRACT
Alagille syndrome is caused by mutations in genes involved in NOTCH signaling, specifically JAG1 and NOTCH2, and is associated with a high rate of peripheral pulmonary artery stenosis. In this study, we report the case of an infant with Alagille syndrome caused by a JAG1 mutation, who succumbed to acute exacerbation of right heart failure due to severe peripheral pulmonary artery stenosis. The autopsy revealed that the peripheral pulmonary arteries were significantly stenosed, exhibiting hypoplasia and thickened vessel walls. Histological examination of the pulmonary artery walls showed a decrease in smooth muscle cells in the tunica media and an increase in collagen and elastic fibers, although the intrapulmonary arteries were intact. These findings are important for understanding the pathogenesis of Alagille syndrome and developing treatment strategies for peripheral pulmonary artery stenosis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Cardiovasc Pathol
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
/
PATOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Japão