Resumo

RIVEROS, Efraín et al. Pretreatment with allopurinol reduces bacterial translocation and ameliorates the morphological changes of the intestinal mucosa in an intestinal ischemia-reperfusion rat model. rev. colomb. cir. [online]. 2012, vol.27, n.3, pp.227-234. ISSN 2011-7582.

Objective: To evaluate the protective effect of pretreatment with allopurinol in an intestinal ischemia-reperfusion injury rat model. Materials and methods: A controlled animal trial was conducted; 10 Wistar rats were kept under controlled conditions for three days. One group (n=5) received allopurinol 50 mg/kg per day for the 3-day period and an additional dose immediately prior to surgical mesenteric artery clamping (60 minutes) and reperfusion (60 minutes). The other group (n=5) did not receive the medication. Hystologic analysis of intestinal mucosa by means of Chou grading system was performed, and blood cultures from the heart were withdrawn. Results: Positive blood cultures were found in 20% of the allopurinol group as compared with 100% in the control group (p<0.0001). Deep mucosal lesion was evidence in all cases. Allopurinol pretreatment reduced significantly the ischemia-reperfusion injury (p<0.001). Conclusions: Allopurinol administration prior to intestinal ischemia ameliorated morphologic changes related to the ischemia-reperfusion process. The beneficial effect of allopurinol was demonstrated with pretreatment for three days.

Palavras-chave : allopurinol; ischemia; reperfusion injury; free radicals; bacterial translocation.

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