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Summary
Increase in intraluminal bacterial count, disruption of the mucosal integrity, changes in intestinal immunity and transit time are the factors involved in bacterial translocation. The relationship between intestinal transit time, intra luminal bacterial count and translocation rate were investigated in 40 Wistar-albino rats. The study was conducted in 4 groups with 10 animals in each. Group I (controls): saline + laboratory chow, Group II: saline + oral total parenteral nutrition (TPN) solution, Group III: morphine sulfate (MS) + oral TPN solution, Group IV: neostigmine bromide (NB) + oral TPN solution.
Intestinal transit time was measured by using Indium111-labeled diethylene triamine pentaacetic acid (DTPA). It was prolonged in the MS-treated group and shortened in the NB-treated group (p < 0.01). The frequency of bacterial translocation was 60% in the oral TPN solution group, 100% in the MS-treated group, 20% in the NB-treated group and 10% in controls. Bacterial counts in duodenum, jejunum, ileum and caecum were significantly increased (p < 0.001) in the MS-treated group and decreased (p < 0.05) in the NB-treated group in comparison with the control group. In conclusion, the prolongation of intestinal transit time increased the intraluminal bacterial count and augmented bacterial translocation. The decrease in intestinal transit time had a converse effect.