Preconditioning as a method of neuroprotection in a model of brain infarct
| Autor: | R. M. Khudoerkov, N. S. Samojlenkova, S. A. Gavrilova, Yu. A. Pirogov, V. B. Koshelev |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Анналы клинической и экспериментальной неврологии, Vol 3, Iss 2, Pp 26-30 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2075-5473 2409-2533 |
| DOI: | 10.17816/psaic374 |
| Popis: | Preconditioning of ischemic and hypoxic type was investigated as a method of protecting brain against acute ischemic injury. The preconditioning methods were applied to experimental rats 24 h before the time when local brain infarct was done by middle cerebral artery occlusion (MCAO). It was found that the ischemic and hypoxic preconditioning resulted in three general morphological changes: 1) the size of infarct zone was reduced by 2.2–3.8 times compared with rats that had not been treated with the preconditioning before MCAO; 2) the preconditioning treatment retained the number of living neurons in penumbra at the level of control rats, while without the preconditioning neuronal count in the penumbra after MCAO was 29% lower; 3) the number of glial cells in penumbra was increased after MCAO by 38% compared with the control level, and continued to increase under the preconditioning treatment up to 60%, that suggests an important role of neuroglia in neuroprotection. Selective blockers of ATP2dependant K+2channels (52hydroxydecanoate and glibenclamide) completely abolished the neuroprotective effects of the preconditioning. |
| Databáze: | Directory of Open Access Journals |
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