Abstract |
This study aims to investigate the therapeutic effect of calpain inhibitor E-64-d on SCI and to find a new approach to treat SCI. When an SCI rat model was established, it was immediately administered with E-64-d. RT-PCR and Western blotting were used to determine the protein and mRNA levels of calpain 1 and 68-kD NFP. TUNEL staining and NeuN labeling were performed to analyze neuronal apoptosis in the lesion. Immunohistochemistry assay was carried out to observe the expressions of calpain 1 and GFAP. Cyclooxygenase-2 activity was measured to show the immune response status. Locomotor function was evaluated by inclined plane test and Basso, Beattie, and Bresnahan locomotor rating scale. The results showed that calpain 1 was activated after SCI occurred. Treatment with E-64-d decreased expressions of calpain 1 and GFAP, alleviated neuronal apoptosis, inhibited cyclooxygenase-2 activity, and resulted in the promoted locomotor function. Furthermore, combination of E-64-d and MP had better efficacy than did E-64-d or MP alone. E-64-d is expected to be applied to treat SCI, and its alliance with MP may provide a valid strategy for SCI therapy.
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Authors | Zifeng Zhang, Zheng Huang, Hao Dai, Licheng Wei, Songtao Sun, Feng Gao |
Journal | BioMed research international
(Biomed Res Int)
Vol. 2015
Pg. 134242
( 2015)
ISSN: 2314-6141 [Electronic] United States |
PMID | 26240815
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- (3-ethoxycarbonyloxirane-2-carbonyl)leucine (3-methylbutyl) amide
- Glycoproteins
- calpain inhibitors
- Calpain
- Capn1 protein, rat
- Leucine
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Topics |
- Acute Disease
- Animals
- Calpain
(metabolism)
- Glycoproteins
(administration & dosage)
- Leucine
(administration & dosage, analogs & derivatives)
- Locomotion
(drug effects)
- Male
- Rats
- Recovery of Function
(drug effects)
- Spinal Cord Injuries
(diagnosis, drug therapy, physiopathology)
- Treatment Outcome
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