Possible role of nitric oxide in the pathogenesis of pulmonary hypertension in broilers: a synopsis.
Avian Pathol
; 36(4): 261-7, 2007 Aug.
Article
em En
| MEDLINE
| ID: mdl-17620170
ABSTRACT
Nitric oxide (NO) produced by vascular endothelial cells is an important determinant of the basal tone of small arteries and arterioles. Impaired endothelial NO production has been implicated in the pathophysiology of pulmonary hypertension in humans. Available data suggest that reduction of endothelial NO synthesis, with evidence of reduced endothelial NO synthase expression in pulmonary arterioles, is associated with increased pulmonary vasomotor tone and vascular remodelling in hypertensive broilers. Supplemental l-arginine, a precursor of NO, has been shown to induce flow-dependent pulmonary vasodilation, to prevent reduced endothelial NO synthase expression and to inhibit vascular remodelling in broilers with pulmonary hypertension. Nevertheless, its effect on pulmonary hypertension syndrome incidence is limited. It appears that impaired production of NO is a secondary rather than a causative factor in the pathogenesis of pulmonary hypertension in broilers.
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Base de dados:
MEDLINE
Assunto principal:
Doenças das Aves Domésticas
/
Hipertensão Pulmonar
/
Óxido Nítrico
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article