The NLRP3 Inflammasome Inhibitor, OLT1177 (Dapansutrile), Reduces Infarct Size and Preserves Contractile Function After Ischemia Reperfusion Injury in the Mouse.
J Cardiovasc Pharmacol
; 73(4): 215-222, 2019 04.
Article
em En
| MEDLINE
| ID: mdl-30747785
ABSTRACT
BACKGROUND:
Activation of the NLRP3 inflammasome is a primary driver of sterile inflammation in response to myocardial ischemia reperfusion. Pharmacologic inhibitors of the NLRP3 inflammasome are being developed. We proposed that OLT1177 (dapansutrile), a novel NLRP3 inflammasome inhibitor, could preserve myocardial function after ischemia reperfusion injury in the mouse.METHODS:
We used an experimental murine model of myocardial ischemia reperfusion injury through transient ligation of the left coronary artery and measured the effects of OLT1177 (6, 60, or 600 mg/kg intraperitoneal dose) on infarct size at pathology and on systolic cardiac function at echocardiography. To simulate a clinical scenario, we investigated the time window of therapeutic intervention with OLT1177 (60 mg/kg) administered 60, 120, or 180 minutes after reperfusion.RESULTS:
OLT1177 was rapidly detectable in the plasma following intraperitoneal injection and had no effect on cardiac function in healthy mice. OLT1177 treatment at reperfusion showed significant dose-dependent reduction in infarct size (-36%, -67%, and -62% for 6, 60, and 600 mg/kg, respectively; P < 0.001 for linear trend, P = 0.010 vs. vehicle for 6 mg/kg, and P < 0.001 vs. vehicle for 60 and 600 mg/kg) and preserved cardiac systolic function measured as left ventricular fractional shortening at 24 hours and 7 days after injury (P = 0.015 for 6 mg/kg and P < 0.01 for 60 and 600 mg/kg). OLT1177 reduced infarct size also when given after 60 minutes of reperfusion (-71%, P < 0.001 vs. vehicle).CONCLUSION:
OLT1177 (dapansutrile) limits infarct size and prevents left ventricular systolic dysfunction when given within 60 minutes following ischemia reperfusion injury in the mouse.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Traumatismo por Reperfusão Miocárdica
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Inflamassomos
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Proteína 3 que Contém Domínio de Pirina da Família NLR
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Anti-Inflamatórios
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Contração Miocárdica
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Infarto do Miocárdio
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Miocárdio
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Nitrilas
Limite:
Animals
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article