Apelin-13 attenuates injury following ischemic stroke by targeting matrix metalloproteinases (MMP), endothelin- B receptor, occludin/claudin-5 and oxidative stress
| Autor: | Raheleh Gholamzadeh, Pooya M. Tehrani, Fatemeh Ramezani, Nahid Aboutaleb |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Ischemia Brain Edema Matrix Metalloproteinase Inhibitors Pharmacology medicine.disease_cause Occludin Antioxidants Brain ischemia Superoxide dismutase Cellular and Molecular Neuroscience chemistry.chemical_compound medicine Animals Claudin-5 Rats Wistar Infusions Intravenous Ischemic Stroke Evans Blue Brain Chemistry biology Infarction Middle Cerebral Artery Malondialdehyde medicine.disease Receptor Endothelin B Rats Apelin Oxidative Stress chemistry biology.protein Intercellular Signaling Peptides and Proteins Oxidative stress |
| Zdroj: | Journal of Chemical Neuroanatomy. 118:102015 |
| ISSN: | 0891-0618 |
| Popis: | Oxidative stress, an adverse consequence of brain ischemia-reperfusion injury (IRI), activates matrix metalloproteinase enzymes which cause to destruction of extracellular matrix and tight junction proteins. Oxidative stress during stroke increases serum endothelin-1 and endothelin B receptor (ETBR) expression. Apelin-13, an endogenous peptide, is expressed in numerous tissues that regulate diverse physiological and pathological processes. This study aimed to investigate the effect of intravenous (IV) injection of apelin-13 on cerebral vasogenic edema due to brain IRI. Animals were divided into sham, ischemia, and treat groups. IRI model was induced by middle cerebral artery occlusion (MCAO) for 60 min followed by 23 h reperfusion. Apelin-13 was injected into the tail vein 5 min before reperfusion. Neurological defects were evaluated with longa test. Brain water content and BBB permeability were assessed according to cerebral dry-wet weight and brain Evans blue extraction. Malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) were measured using the colorimetric method. Expression of occludin and claudin-5, matrix metalloproteinase- 2 and 9 (MMP-2 & 9) and, ETBR were evaluated using Western blot. Brain IRI was associated with BBB breakdowns and vasogenic edema. Apelin-13 significantly reduced BBB permeability and vasogenic edema. Apelin-13 significantly attenuated IRI-related oxidative stress. Apelin-13 decreased expression of mmp-2, 9 and ETBR, prevented from decrement of occludin and claudin-5 expersion, which protected BBB integrity and reduced vasogenic edema. In conclusion, our results have suggested that an IV injection of apelin-13 could somehow reduce vasogenic edema via targeting oxidative stress and ETBR expression. |
| Databáze: | OpenAIRE |
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