Abstract | OBJECTIVES: METHODS:
Myocardial infarcts (MI) model was set up in SD rats by permanent ligation of the left anterior descending coronary artery (LDA). The rats were divided randomly into 3 groups with each group of 20 rats: (A) the control group with the administration of Ringer's lactated solution at a dose of 2.5ml/kg); (B) PolyPHb group, PolyPHb solution at a dose of 0.16g Hb/kg and (C), PolyPHb+CAT+SOD group, PolyPHb solution at a dose of 0.16g Hb/kg and catalase (CAT) solution and superoxide dismutase (SOD) solution at a dose of 1681 U/kg and 528000 U/kg, respectively. Each rat received treatments via caudal vein, once a day for 7 days. Qualitative evaluations were made based on the reading of cardiac troponin T (cTnT), the myocardial infarction size (MIS) derived from the staining of myocardium tissue, and the pathological changes in infarct area. The ischemia changes of cardiomyocytes were determined by haematoxylin - basic fuchsin - picric acid (HBFP) staining and the apoptosis of cardiomyocytes were evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling assay (TUNEL). RESULTS: Compared to the control group, PolyPHb greatly decreased the cTnT (p < 0.05), MIS (p < 0.05), and the size of myocardial ischemia (p < 0.05). PolyPHb + CAT + SOD decreased the △ST change (P < 0.05), cTnT (P < 0.01), MIS (p < 0.05), the pathological scores (p < 0.01), the size of myocardial ischemia (p < 0.01), and the apoptosis level (p < 0.01). CONCLUSION: Our study demonstrated that adding PolyPHb improves cardiac functional recovery and reduces myocardial infarction of rat heart.
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Authors | Yuxin Wang, Xiangfang Zhao, Fengjuan Li, Weiping Chen, Lei Wang, Chengmin Yang |
Journal | Artificial cells, blood substitutes, and immobilization biotechnology
(Artif Cells Blood Substit Immobil Biotechnol)
Vol. 40
Issue 1-2
Pg. 7-13
(Feb 2012)
ISSN: 1532-4184 [Electronic] England |
PMID | 21623696
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Hemoglobins
- hemoglobin polymer
- Catalase
- Superoxide Dismutase
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Topics |
- Animals
- Apoptosis
(drug effects)
- Catalase
(pharmacology, therapeutic use)
- Electrocardiography
- Female
- Heart
(drug effects, physiopathology)
- Hemoglobins
(pharmacology, therapeutic use)
- Humans
- Male
- Myocardial Infarction
(drug therapy, metabolism, pathology, physiopathology)
- Myocardium
(enzymology, pathology)
- Placenta
(chemistry)
- Pregnancy
- Rats
- Rats, Sprague-Dawley
- Superoxide Dismutase
(pharmacology, therapeutic use)
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