The vasoactive material and pulmonary vascular structural remodeling in rats / 中国应用生理学杂志
Chinese Journal of Applied Physiology
; (6): 71-74, 2006.
Article
de Zh
| WPRIM
| ID: wpr-254602
Bibliothèque responsable:
WPRO
ABSTRACT
<p><b>AIM</b>To investigate the role of vascular endothelial growth factor (VEGF) and endothelin-1 (ET-1) on pulmonary vascular structural remodeling in rats and pika.</p><p><b>METHODS</b>The Wistar rats which reside at 2 260 m were carried to 3 417 m. After they were fed 24 hours,2 weeks and 3 weeks respectively, the level of VEGF and ET-1 were measured using a kit by ELISA method. Pulmonary tissue was taken out to stain with elastica-Van Gieson. The amount of pulmonary arteries (< 100 microm) and the component ratio of MA, PMA,and NMA were calculated by using a light microscope. The ratio of right ventricle weight to left ventricle plus septum weight (RV/LV + S) were measured.</p><p><b>RESULTS</b>The ET-1 was significantly different in pika as compared with 24 h, 2 weeks, 3 weeks hypoxic rats (P < 0.01) respectively. The levels of VEGF in 2 weeks, 3 weeks rats were much higher than that of pika but no difference was found between pika and 24 h hypoxic rats. The ratio of MA, PMA obviously increased, and NMA decreased significantly, right ventricular hypertrophy was developed in differ groups of hypoxic rats.</p><p><b>CONCLUSION</b>The VEGF and ET-1 participate the muscularization of pulmonary vessels during hypoxia and play an important role in the process of hypoxic pulmonary hypertension in rats, however the VEGF and ET-1 may be maintainable only normal organic function in pika.</p>
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Artère pulmonaire
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Rat Wistar
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Endothéline-1
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Facteur de croissance endothéliale vasculaire de type A
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Hypertension pulmonaire
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Lagomorpha
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Poumon
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Hypoxie
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Métabolisme
Limites du sujet:
Animals
langue:
Zh
Texte intégral:
Chinese Journal of Applied Physiology
Année:
2006
Type:
Article