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Chinese Journal of Applied Physiology ; (6): 193-196, 2012.
Artículo en Chino | WPRIM | ID: wpr-329912

RESUMEN

<p><b>OBJECTIVE</b>To explore the mechanism of pulmonary hypertension and Cor Pulmonale rat models induced by monocrotaline (MCT).</p><p><b>METHODS</b>Twenty Wistar male rats were randomly divided into normal control group and model group (n= 10), which received a single intraperitoneal injection of MCT solution (50 mg/kg , the first day) or dissolvant, respectively. On day 28 after MCT administration, the hemodynamic parameters were assessed; levels of tumour necrosis factor-alpha (TNF-alpha), nitric oxide (NO), endothelin-1 (ET-1), B-type natriuretic peptide(BNP) in pulmonary tissue or blood were measured using radio immunoassay or nitrate reductase method.</p><p><b>RESULTS</b>28 days after MCT injection, compared with control group, right ventricle systolic pressure (RVSP) increased and heart rate(HR), mean arterial pressure (MAP) decreased; Levels of TNF-alpha, NO, ET-1 in pulmonary tissue or blood increased significantly in MCT group.</p><p><b>CONCLUSION</b>The potential mechanism of MCI- induced pulmonary hypertension and Cor Pulmonale rat models associates with increasing TNF-alpha, NO, ET-1 levels in vivo, which results from inflammatory injury of lung tissue and blood vessels induced by MCT.</p>


Asunto(s)
Animales , Masculino , Ratas , Modelos Animales de Enfermedad , Endotelina-1 , Metabolismo , Hipertensión Pulmonar , Metabolismo , Pulmón , Metabolismo , Monocrotalina , Óxido Nítrico , Metabolismo , Enfermedad Cardiopulmonar , Metabolismo , Ratas Wistar , Factor de Necrosis Tumoral alfa , Metabolismo
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