Hatice AKKAYA, Taylan ADADEMİR, Ahmet ELİBOL, Ömer Faruk ŞAVLUK, Eylül KAFALI BAŞARAN, Deniz ÇEVİRME, Bayram YILMAZ, Gözde ERKANLI ŞENTÜRK

Comparison between iloprost and alprostadil for protection against ischemia/reperfusion injury in a rat model

Background/aim: Alprostadil and iloprost are successful agents used for both pulmonary hypertension and extremity ischemiatreatment. Different systemic effects of these agents may change the preferences of clinical usage. Superiority of preventing ischemia/reperfusion (IR) injury is a criterion for clinical preference of these agents. The present study was designed to compare the protectiveeffects of alprostadil and iloprost in a rat model of IR injury.Materials and methods: Twenty-three male Sprague Dawley rats were used (aged 8-12 weeks, mean weight 230 ± 30 g). They wererandomized into 4 groups: Group 1 (iloprost + IR), Group 2 (alprostadil + IR), Group 3 (saline + IR), and Group 4 (control). Undergeneral anesthesia, in all groups except Group 4, the abdominal region was explored and the abdominal aorta was temporarilyclamped for 60 min. After the clamp was removed, 120 min of reperfusion was applied. In Group 4, the rats were placed under generalanesthesia and abdominal exploration was performed without the IR procedure. For all rats, body temperature was kept at 36 °C witha heater pad through the whole procedure. The rats were euthanized under general anesthesia to remove the kidneys and lungs forstudy. Histopathological and biochemical analyses were conducted with kidney and lung tissues. Histopathological scoring was doneby analyzing cellular damage at tissue level. Malondialdehyde (MDA), superoxide dismutase, and glutathione levels were studied forbiochemical analysis.Results: Histopathologic analysis showed that, as compared with alprostadil, iloprost provided a significantly higher level of renalprotection against IR injury (P < 0.01). Renal tissue levels of MDA were significantly lower in the alprostadil group as compared toGroup 3 (P < 0.05).Conclusion: Alprostadil and iloprost seem to provide protection against IR injury, with iloprost being more protective in renal tissue.Alprostadil is more effective than iloprost in protecting lung tissue against IR injury.

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