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Landiolol does not enhance the effect of ischemic preconditioning in isolated rat hearts

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Abstract

Purpose

To determine the effect of landiolol on ischemic preconditioned rat hearts.

Methods

Isolated perfused rat hearts were divided into 8 groups. In the control group, there was no treatment before the 30-min global ischemia. In the landiolol infused groups, landiolol (100, 300, and 500 μM) was infused without ischemic preconditioning (IPC). In other groups, hearts were pretreated with 2 episodes of 5-min global ischemia and reperfusion before the 30-min ischemia. During the preconditioning, landiolol (0, 100, 300, and 500 μM) was infused.

Results

Recoveries of coronary flow (CF) and myocardial oxygen consumption (MVO2) at the 120th min after global ischemia to 86 ± 18 and 112 ± 19% of the baseline in the IPC group was, respectively, significantly greater than that to 65 ± 10 and 72 ± 10% in the control group. Landiolol 300 μM also increased the CF and MVO2 significantly (97 ± 19 and 98 ± 39%) compared to the control. IPC + landiolol 500 μM reduced the increase in LV end-diastolic pressure significantly compared to the control. IPC, landiolol (100, 300, and 500 μM), and IPC + landiolol (100, 300, and 500 μM) all decreased infarct sizes significantly to 23.5 ± 15.2, 29.8 ± 12.1, 30.2 ± 13.3, 22.8 ± 14.8, 21.6 ± 7.8, 34.2 ± 14.7 and 25.5 ± 11.3% of the total left ventricular mass, respectively, compared to the control (53.3 ± 12.5%), but there were no significant differences among these groups.

Conclusion

IPC and landiolol have cardioprotective effects on ischemia–reperfusion injury in isolated rat hearts, but pretreatment with landiolol does not enhance the cardioprotective effect of IPC.

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Authors and Affiliations

  1. Department of Anaesthesiology and Intensive Care, Hamamatsu University School of Medicine, 1-20-1, Handayama, Hamamatsu, Shizuoka, 431-3192, Japan

    Shuchun Yu, Takasumi Katoh, Hisako Okada, Hiroshi Makino, Soichiro Mimuro & Shigehito Sato

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  1. Shuchun Yu
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  2. Takasumi Katoh
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  3. Hisako Okada
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  4. Hiroshi Makino
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  6. Shigehito Sato
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Correspondence to Takasumi Katoh.

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Yu, S., Katoh, T., Okada, H. et al. Landiolol does not enhance the effect of ischemic preconditioning in isolated rat hearts. J Anesth 24, 208–214 (2010). https://doi.org/10.1007/s00540-009-0852-2

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  • DOI: https://doi.org/10.1007/s00540-009-0852-2

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