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• W2475305552 abstract "BACKGROUND: Ischemia/reperfusion (IR) injury during the pancreas transplantation can cause numerous postoperative complications, among which, secondary pancreatitis can cause small intestinal mucosal injury and result in severe consequence.OBJECTIVE: To observe the protective effect of ischemic preconditioning (IPC) on small intestinal mucosal barrier after pancreas transplantation in rats.DESIGN: Randomized controlled animal trial.SETTING: Department of Gastrointestinal Surgery, Xijing Hospital, Fourth Military Medical University of Chinese PLA.MATERIALS: This trial was done in the Laboratory of Gastrointestinal Surgery, Xijing Hospital, Fourth Military Medical University of Chinese PLA between September 2001 and April 2004. Eighty-three male SD rats were involved in this trial.MATERIALS: This trial was done in the Laboratory of Gastrointestinal Surgery, Xijing Hospital, Fourth Military Medical University of Chinese PLA between September 2001 and April 2004. Eighty-three male SD rats were involved in this trial.METHODS: Forty-seven rats were randomly chosen to prepare diabetic rat models by penile-intravenous injection of 65 mg/kg streptozotocin. Thirty-six successful model rats were randomized into 3 groups, with 12 in each group: IR group, donor IPC (DIPC) group and recipient with two hindlims IPC (RIPC) group. Twelve of the remaining 36 normal rats served as control group, and the other 24 rats were used as donors. Laparotomy was conducted only in control group, and pancreas transplantation was conducted in the other 3 groups. In DIPC group, the splenic vessels of donors were blocked for 5 minutes and reperfused for 5 minutes twice before obtaining pancreas from donor; In the RIPC group, blood flow of two hindlimbs of recipients was blocked for 5 minutes and reperfused for 5 minutes before reperfusing the pancreas of donor, and this procedure was repeated 3 times. IR group was untouched.MAIN OUTCOME MEASURES: ①On the 5(superscript th) day after operation, 6 rats were randomly chosen from each group to detect small intestinal permeability [expressed with plasm fluorescent-isothiocyanate-dextran (FITC-dextran) concentration] and absorption function (expressed with plasm xylose concentration). ②On the 5(superscript th) day after operation, blood was taken from the left 6 rats in each group to detect serum tumor necrosis factor-α (TNF-α) and nitric oxide (NO) level as well as superoxide dismutase (SOD) and amylase activity. Ileal mucosal tissue was taken to detect wet weight of small intestinal mucosa, the height and width of microvilli, malonaldehyde (MDA) level and myeloperoxidase (MPO) activity. At the same time, mesenteric lymph node, liver and splenic tissue were taken to perform bacterial culture. Bacterial translocation was observed.RESULTS: After supplement, 72 rats were involved in the result analysis. ①Plasm FITC-dextran concentration of IR group were higher than that in control group, DIPC group and RIPC group, respectively (P＜0.01). ②Plasm xylose concentration in the IR group was lower than that in the control group, DIPC group and RIPC group, respectively (P＜0.01). ③Bacterial translocation rate in the IR group was higher than that in the control group, DIPC group and RIPC group, respectively (P＜0.01). ④Small intestinal mucosal injury degree in the IR group was lower than that in the other 3 groups (P＜0.01). ⑤Small intestinal MPO activity and MDA level in IR group were significantly higher than those in the other 3 groups (P＜0.01). Serum SOD activity and NO level were lower but amylase activity and TNF-α level were higher in the IR group as compared with the other 3 groups (P＜0.01).CONCLUSION: IPC of two hindlimbs in both donor and recipient can protect small intestinal mucosal barrier and reduce bacterial translocation rate after pancreas transplantation in rats." @default.
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• W2475305552 date "2007-07-22" @default.
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• W2475305552 title "Ischemic Preconditioning Lessens the Damage of Small Intestinal Mucosal Barrier after Pancreas Transplantation in Rats" @default.
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