A novel dual NO-donating oxime and c-Jun N-terminal kinase inhibitor protects against cerebral ischemia–reperfusion injury in mice
| Parent link: | Neuroscience Letters.— , 1975- Vol. 618.— 2016.— [P. 45–49] |
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| Collectivités auteurs: | , |
| Autres auteurs: | , , , , , , |
| Résumé: | Title screen The c-Jun N-terminal kinase (JNK) has been shown to be an important regulator of neuronal cell death. Previously, we synthesized the sodium salt of 11H-indeno[1,2-b]quinoxalin-11-one (IQ-1S) and demonstrated that it was a high-affinity inhibitor of the JNK family. In the present work, we found that IQ-1S could release nitric oxide (NO) during its enzymatic metabolism by liver microsomes. Moreover, serum nitrite/nitrate concentration in mice increased after intraperitoneal injection of IQ-1S. Because of these dual actions as JNK inhibitor and NO-donor, the therapeutic potential of IQ-1S was evaluated in an animal stroke model. We subjected wild-type C57BL6 mice to focal ischemia (30 min) with subsequent reperfusion (48 h). Mice were treated with IQ-1S (25 mg/kg) suspended in 10% solutol or with vehicle alone 30 min before and 24 h after middle cerebral artery (MCA) occlusion (MCAO). Using laser-Doppler flowmetry, we monitored cerebral blood flow (CBF) above the MCA during 30 min of MCAO provoked by a filament and during the first 30 min of subsequent reperfusion. In mice treated with IQ-1S, ischemic and reperfusion values of CBF were not different from vehicle-treated mice. However, IQ-1S treated mice demonstrated markedly reduced neurological deficit and infarct volumes as compared with vehicle-treated mice after 48 h of reperfusion. Our results indicate that the novel JNK inhibitor releases NO during its oxidoreductive bioconversion and improves stroke outcome in a mouse model of cerebral reperfusion. We conclude that IQ-1S is a promising dual functional agent for the treatment of cerebral ischemia and reperfusion injury. Режим доступа: по договору с организацией-держателем ресурса |
| Langue: | anglais |
| Publié: |
2016
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| Sujets: | |
| Accès en ligne: | http://dx.doi.org/10.1016/j.neulet.2016.02.033 |
| Format: | Électronique Chapitre de livre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648023 |
MARC
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| 200 | 1 | |a A novel dual NO-donating oxime and c-Jun N-terminal kinase inhibitor protects against cerebral ischemia–reperfusion injury in mice |f D. N. Atochin, I. A. Schepetkin (Shchepyotkin), A. I. Khlebnikov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References.: p. 49 (45 tit.)] | ||
| 330 | |a The c-Jun N-terminal kinase (JNK) has been shown to be an important regulator of neuronal cell death. Previously, we synthesized the sodium salt of 11H-indeno[1,2-b]quinoxalin-11-one (IQ-1S) and demonstrated that it was a high-affinity inhibitor of the JNK family. In the present work, we found that IQ-1S could release nitric oxide (NO) during its enzymatic metabolism by liver microsomes. Moreover, serum nitrite/nitrate concentration in mice increased after intraperitoneal injection of IQ-1S. Because of these dual actions as JNK inhibitor and NO-donor, the therapeutic potential of IQ-1S was evaluated in an animal stroke model. We subjected wild-type C57BL6 mice to focal ischemia (30 min) with subsequent reperfusion (48 h). Mice were treated with IQ-1S (25 mg/kg) suspended in 10% solutol or with vehicle alone 30 min before and 24 h after middle cerebral artery (MCA) occlusion (MCAO). Using laser-Doppler flowmetry, we monitored cerebral blood flow (CBF) above the MCA during 30 min of MCAO provoked by a filament and during the first 30 min of subsequent reperfusion. In mice treated with IQ-1S, ischemic and reperfusion values of CBF were not different from vehicle-treated mice. However, IQ-1S treated mice demonstrated markedly reduced neurological deficit and infarct volumes as compared with vehicle-treated mice after 48 h of reperfusion. Our results indicate that the novel JNK inhibitor releases NO during its oxidoreductive bioconversion and improves stroke outcome in a mouse model of cerebral reperfusion. We conclude that IQ-1S is a promising dual functional agent for the treatment of cerebral ischemia and reperfusion injury. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Neuroscience Letters |d 1975- | ||
| 463 | |t Vol. 618 |v [P. 45–49] |d 2016 | ||
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| 701 | 1 | |a Schepetkin (Shchepyotkin) |b I. A. |c doctor-biophysicist |c leading researcher of Tomsk Polytechnic University, candidate of medical science |f 1962- |g Igor Aleksandrovich |3 (RuTPU)RU\TPU\pers\37358 |9 20276 | |
| 701 | 1 | |a Khlebnikov |b A. I. |c Chemist |c Professor of Tomsk Polytechnic University |f 1963- |g Andrey Ivanovich |3 (RuTPU)RU\TPU\pers\33927 |9 17500 | |
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