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  • Title: The effect of trimetazidine on the survival of rat island skin flaps subjected to ischemia-reperfusion injury.
    Author: Kara IG, Kara CO, Ozden A, Oçsel H.
    Journal: Ann Plast Surg; 2001 Aug; 47(2):168-71. PubMed ID: 11506325.
    Abstract:
    The effect of trimetazidine (TMZ) on flap ischemia-reperfusion injury was investigated in rat inferior epigastric artery flaps. Twenty-six rats, divided into four experimental groups-nonischemic group (group 1, N = 5), ischemic control group (group 2, N = 7), preischemic TMZ-treated group (group 3, N = 7), and postischemic TMZ-treated group (group 4, N = 7)-were used. Rat inferior epigastric artery flaps were rendered ischemic by occluding the feeding femoral artery, and they were reperfused by releasing the clamps after 11 hours in groups 2 through 4. Group 3 rats were given TMZ (3 mg per kilogram, intravenously) diluted in saline before application of the clamp, and group 4 rats were given TMZ before clamp removal. Flap survival was scored on postoperative day 8. All flaps in the nonischemic control group (group 1) survived completely. The ischemic control group (group 2) demonstrated a 6.3 +/- 4.3% survival area. In the preischemic TMZ group (group 3) the mean survival area was 76.9 +/- 6.1%, and in the postischemic TMZ group (group 4) it was 76.8 +/- 5.6%. TMZ-treated flaps showed a significant increase in survival area regardless of the time of administration (p = 0.001, group 3 vs. group 2; p = 0.001, group 4 vs. group 2). This finding suggests that TMZ has a beneficial effect on the prevention or treatment of arterial ischemic flaps.
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