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The effects of truncal vagotomy and proximal gastric vagotomy on bacterial translocation in rats were investigated in this experiment. The rats were divided into three groups. Only esophageal and gastric manipulations were performed in the control group (Group I). The anterior and posterior vagi were found and 0.5- to 1-cm pieces were taken out in the truncal vagotomy + pyloric dilatation group. In addition, pyloric dilatation was performed using a Fogarty catheter (Group II). The branches of the vagi, which lead to the rumen and corpus, were first tied with 5/O silk and then resected in the proximal gastric vagotomy group (Group III). All animals were sacrificed on the 7th day. Qualitative and quantitative tissue cultures of cecum, liver, spleen, mesenteric lymph node, and blood from vena cava were taken and a tissue sample from the ileum was obtained for histopathological examination with light microscopy. At the end of microbiologic study, the bacterial concentration on the cecal wall was 10.68 x 10(8) in the truncal vagotomy group, while it was 0.53 x 10(8) in the proximal gastric vagotomy group. Bacterial translocation was observed more in vagotomy groups than in control groups on the mesenteric lymph node, liver, and spleen. Bacterial translocation was greater in the truncal vagotomy group than in the proximal gastric vagotomy group (P < 0.05). Bacterial translocation was observed mostly in the liver, spleen, and mesenteric lymph node in the proximal gastric vagotomy group. No microorganisms could be cultured on systemic blood cultures. Cultures were positive only for one rat in the proximal gastric vagotomy group and for two rats in the truncal vagotomy group. At the end of histopathologic examination, when histopathologic parameters given for each rat were calculated, they were 5.44 +/- 2.12 in the truncal vagotomy group and 4.77 +/- 2.12 the in proximal gastric vagotomy group. The difference between these two groups was statistically significant (P < 0.05). Thus, there was damage to the intestinal wall in vagotomy groups, and it was greater in the truncal vagotomy group than in the proximal gastric vagotomy group. It was observed that bacterial translocation occurs after vagotomy, that this translocation occurs more after truncal vagotomy than after proximal gastric vagotomy, and that the translocation that occurred after vagotomies was not effective enough to create bacteremia.
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