Pathological changes of monocrotaline-induced pulmonary hypertension in miniature pigs / 南方医科大学学报
Journal of Southern Medical University
;
(12): 867-869, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-268980
ABSTRACT
<p><b>OBJECTIVE</b>To observe the pathological changes in the myocardial and pulmonary tissues in miniature pigs with chronic pulmonary hypertension induced by monocrotaline (MCT).</p><p><b>METHODS</b>Twelve male miniature pigs (weigh 15.0-18.0 kg, aged 4.0-4.5 months) were examined for baseline mean pulmonary artery pressure (mPAP), followed by intraperitoneal injection of 10.0 mg/kg MCT in 10 randomly selected pigs. The mean pulmonary artery pressure at 4 and 8 weeks were determined, and the pathological changes in the myocardial and pulmonary tissues were observed.</p><p><b>RESULTS</b>The baseline mPAP of normal miniature pigs was 15.19∓0.70 mmHg. At 4 and 8 weeks after MCT injection, the sPAP and dPAP were 19.69∓2.47 mmHg and 25.62∓4.88 mmHg, respectively, and the mPAP increased significantly compared with that of the normal control group (P<0.01). Obvious pathological changes such as pulmonary hypertension and right ventricular hypertrophy were found in the pigs 4 weeks after MCT injection, and at 8 weeks, significant pathological changes occurred including right ventricular fibrosis and thickening of the tunica media of the pulmonary artery.</p><p><b>CONCLUSION</b>MCT can cause pulmonary hypertension in miniature pigs 8 weeks after drug administration, shown as increased pulmonary artery pressure and pulmonary vascular remodeling.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Swine
/
Swine, Miniature
/
Monocrotaline
/
Hypertension, Pulmonary
/
Lung
/
Myocardium
Limits:
Animals
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2012
Type:
Article
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