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  • Title: Does propofol or caffeic acid phenethyl ester prevent lung injury after hindlimb ischaemia-reperfusion in ventilated rats?
    Author: Akyol A, Ulusoy H, Imamoğlu M, Cay A, Yuluğ E, Alver A, Ertürk E, Koşucu M, Beşir A, Akyol A, Ozen I.
    Journal: Injury; 2006 May; 37(5):380-7. PubMed ID: 16513122.
    Abstract:
    BACKGROUND: To investigate the effects of propofol and caffeic acid phenethyl ester (CAPE) on prevention of lung injury as a remote organ after performing hindlimb ischaemia-reperfusion (IR) in a rat model. METHODS: The animals were divided randomly into one of four groups: sham, no IR (n = 8), control, IR, (n = 8), CAPE group, IR with CAPE, (n = 8), propofol group, IR with P, (n = 8). After the rats were anaesthetised, the animals in the CAPE group received CAPE of 10 micromol, in the propofol group received propofol 50 mg/kg, in the control group received a similar volume of saline solution by means of intraperitoneal injection 1 h before reperfusion. After 4 h of ischaemia the tourniquet was removed and the animals were released for reperfusion for 4 h thereafter. At the end of the reperfusion period, a median sternotomy was performed. A blood sample was obtained for plasma malondialdehyde (MDA). The lung tissues were also removed for MDA assays, myeloperoxidase (MPO) activity, and histopathological examination. RESULTS: Plasma and lung MDA levels, and lung MPO activity were significantly higher in the control group compared to the other groups (p < 0.0005). In the CAPE group, these were significantly lower compared to the control group (p < 0.0005). Also, propofol caused a marked reduction in the MDA levels and MPO activity compared with control group (p < 0.0005), with no significant difference compared to that of the sham group. Histopathologically, the scores resulted in a grade zero (8/8) in the sham group, 3 (3/8) or 4 (5/8) in the control group, 1 (2/8) or 2 (6/8) in the CAPE group, and 1 (3/8) or 2 (5/8) in the propofol group. CONCLUSION: Propofol and CAPE seem to be effective in protecting against lung injury caused by increased oxidative stress and neutrophil accumulation after hindlimb IR in a rat model.
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