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- Title
STUDY ON THE PROTECTION OF ISOLATED RABBIT'S PULMONARY ISCHEMIA REPERFUSION INJURY BY ADDING TANSHINONE IIA INTO LOW POTASSIUM DEXTRAN SOLUTION.
- Authors
LI, YUEBING; LIANG, LI; CHEN, WEI; PENG, CHUNHUI; ZHAO, ZHENGPING; HUANG, ZHIGANG; WANG, YONGJIAN
- Abstract
Purpose: This study investigates the protective effect of Tanshinone IIA (Tan IIA) on isolated rabbit's pulmonary ischemia reperfusion injury (IRI) and discusses its potential for the treatment of microcirculation disorders. Methods: We chose isolated rabbit's IRI as our experimental models, and randomly divided 24 New Zealand rabbits into two groups. For the control group (L), the lungs were perfused with Low Potassium Dextran (LPD) solution under 4C, and then it was preserved under 10C. For the experimental group (LT), the lungs were perfused and preserved with LPDTan solution using the same approach. After the lungs have been preserved for 18h, we again perfused it for another 30 min. After reperfusion was completed, we determined the contents of SOD, NO, and MDA immediately. The wet to dry weight ratio ( W/ was then obtained. Finally, we use a combination of light microscopy and transmission electron microscopy to observe the ultra-structural changes of lung tissues. Results: We discovered that the contents of SOD and NO in group LT were higher than that in group L (). However, the MDA and the W/ D values in group LT were lower than that in group L ( or ). We also observed that part of the tissues has hyperemia, edema, and congestion. Under the light microscopy, the structures of the pulmonary alveoli, bronchi, and capillaries were complete. But under high-power field, group L had a more obvious phenomenon of alveolar epithelium and capillary epithelium cells swelling and hypertrophy with respect to group LT. It could be observed that in the partial tissues, erythrocytes exuded from alveoli and the interval tends to widen in the alveoli. Under transmission electron microscopy, group L is observed to have mitochondria swelling, vacuolization, and even autosome edge accumulation. Microvillus of cell Type II significantly decreased or disappeared. Blood-air barrier swelled severely and a portion of it was cracked. The phenomena above were obviously reduced for group LT. Conclusion: Our experiments confirmed that adding Tan IIA into LPD solution can reduce the isolated rabbit's IRI effectively.
- Subjects
ANIMAL models of ischemia; DEXTRAN sulfate; RABBIT anatomy; MICROSCOPY; TRANSMISSION electron microscopy
- Publication
Journal of Mechanics in Medicine & Biology, 2016, Vol 16, Issue 7, p-1
- ISSN
0219-5194
- Publication type
Article
- DOI
10.1142/S0219519416500949