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Pantoprazole provides myocardial protection similar to ischemic preconditioning: experimental study of isolated hearts of rats / Pantoprazol oferece proteção miocárdica semelhante ao pré-condicionamento isquêmico: estudo em corações isolados de ratos
Gomes, Otoni Moreira; Magalhães, Mônica de Mônico; Abrantes, Rafael Diniz; Kallás, Elias.
  • Gomes, Otoni Moreira; Fundação Cardiovascular São Francisco de Assis. Belo Horizonte. BR
  • Magalhães, Mônica de Mônico; Francisco de Assis Truth is Jesus Cardiovascular Foundation. Postgraduation Course of Cardiovascular Surgery. Belo Horizonte. BR
  • Abrantes, Rafael Diniz; Francisco de Assis Truth is Jesus Cardiovascular Foundation. Postgraduation Course of Cardiovascular Surgery. Belo Horizonte. BR
  • Kallás, Elias; Vale do Sapucaí University. School of Medicine. Pouso Alegre. BR
Rev. bras. cir. cardiovasc ; 26(3): 433-439, jul.-set. 2011.
Article in English | LILACS | ID: lil-624526
ABSTRACT

OBJECTIVE:

To evaluate pantoprazole effect in the functional recovery of isolated hearts of rats, submitted to ischemia and reperfusion with and without ischemic preconditioning.

METHODS:

In four groups of eight Wistar breed rats, the hearts were removed after anesthesia and perfused with Krebs-Henseleit solution (95% O2, 5% CO2, 37ºC). GI, GII, GIII and GIV hearts were submitted to ischemia (20 min) and reperfusion (30 min). In GII and GIV, preconditioning was performed with 5 min of ischemia and 5 min of reperfusion before 20 min of the ischemia period induction. In GIII and GIV pantoprazole 100 mg was done before a 20 min-period of ischemia induction. Heart Rate (HR), Coronary Flow (CoF), Systolic Pressure (SP), +dP/dt and -dP/dt were registered before (t0) and after reperfusion (t30). Kruskal-Wallis (P<0.05) test was used.

RESULTS:

There were no differences (P>0.05) between groups among HR and CoF values. Differences occurred between groups, I and II, III and IV at t30 with SP reduced for 32% mean value in GI, 65% GII, 65% GIII, and 73% GIV; The t30 + dP/dtmax were 34% in GI, 61% GII, 63% GIII and 72% GIV. The t30 -dP/dtmax were GI 28%, GII 63%, GIII 75 % and GIV 75%; (P<0.05). There were no significant differences in the SP, +dP/dtmax, and -dP/dtmax between Groups II, III and IV results.

CONCLUSIONS:

The administration of pantoprazole before induction of ischemia significantly protected the myocardial functional recovery with the results of SP, + dP / dtmax and dP/dtmax similar to the ischemic preconditioning against ischemia-reperfusion.
RESUMO

OBJETIVO:

Avaliar o efeito do pantoprazol na recuperação funcional de corações isolados de ratos submetidos à isquemia e reperfusão com e sem pré-condicionamento isquêmico.

MÉTODOS:

Em quatro grupos de oito ratos Wistar, após anestesia os corações foram removidos e perfundidos com Krebs-Henseleit (95% O2, 5% CO2, 37ºC). Os corações de GI, GII, GIII e GIV foram submetidos a 20' de isquemia e 30'de reperfusão. Em GII e GIV realizou-se pré condicionamento com 5' de isquemia e 5' de reperfusão antes dos 20' de isquemia. Em GIII e GIV, pantoprazol 100mcg foram injetados imediatamente antes dos 20' de isquemia. Frequência cardíaca (FC), Fluxo Coronariano (FCo), Pressão Sistólica (PS), + dP/dt e -dP/dt foram registrados em (T0) e (t30). Estatística Kruskal-Wallis (P <0,05).

RESULTADOS:

Não houve diferenças (P> 0,05) entre grupos nos valores de FC e de CFo. Diferenças (P <0,05) ocorreram entre GI e GII, GIII e GIV, com PS t30 reduzida para 32% GI, 65% GII, 65% GIII e 73% GIV. Em t30 + dP/dtmax 34% GI, 61% GII, 63% GIII e 72% GIV. A -dP/dtmax t30 GI 28%, GII 63%, GIII 75% e GIV 75%. Não houve diferença estatística (P< 0,05) nos valores de PS, +dP/dtmax e -dP/dtmax entre os GII, GIII e GIV.

CONCLUSÕES:

A administração do pantoprazol antes da indução da isquemia protegeu significativamente a recuperação funcional miocárdica com resultados de SP, +dP/ dtmax e -dP/dtmax semelhantes aos do pré-condicionamento isquêmico contra lesão de isquemia-reperfusão.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Myocardial Reperfusion Injury / Myocardial Ischemia / Ischemic Preconditioning, Myocardial / Enzyme Inhibitors Limits: Animals Language: English Journal: Rev. bras. cir. cardiovasc Journal subject: Cardiology / General Surgery Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Francisco de Assis Truth is Jesus Cardiovascular Foundation/BR / Fundação Cardiovascular São Francisco de Assis/BR / Vale do Sapucaí University/BR

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Full text: Available Index: LILACS (Americas) Main subject: Myocardial Reperfusion Injury / Myocardial Ischemia / Ischemic Preconditioning, Myocardial / Enzyme Inhibitors Limits: Animals Language: English Journal: Rev. bras. cir. cardiovasc Journal subject: Cardiology / General Surgery Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Francisco de Assis Truth is Jesus Cardiovascular Foundation/BR / Fundação Cardiovascular São Francisco de Assis/BR / Vale do Sapucaí University/BR