远端胃大部切除后连续性空肠间置术对胃肠激素水平的影响

目的 通过建立成年Beagle犬远端胃大部切除模型,探讨远端胃大部切除连续空肠间置对Beagle犬胃肠激素的影响.方法 将24只成年Beagle犬随机分为连续性空肠间置组(连续间置组)、Billroth Ⅱ吻合组(毕Ⅱ组)、空肠孤立间置组(孤立间置组).应用酶联免疫法测定在远端胃大部切除术后分别行毕Ⅱ式、空肠孤立间置、连续间置术后犬血浆胃泌素、胃动素和胆囊收缩素的水平.结果 连续间置组术后2个月血浆胃泌素水平餐前为(2.2±0.7)ng/L、餐后为(3.9±0.8)ng/L,均低于术前的(3.8±1.0)ng/L、(5.3±1.6)ng/L,P＜0.05.连续空肠间置组术后2个月餐后血浆胃泌素水平为(3.9±0.8)ng/L,高于其他2组的(2.7±1.0)ng/L和(3.6±0.6)ng/L,P＜0.05;连续间置组术后2个月血浆胃动素水平餐前为(577±204)ng/L、餐后为(1003±209)ng/L,均高于术前的(429±128)ng/L、(854±218)ng/L,P＜0.05.连续间置组术后2个月餐后血浆胃动素水平为(1003±209)ng/L,高于其他2组的(840±205)ng/L、(986±189)ng/L,P＜0.05;连续间置组术后2个月血浆胆囊收缩素水平为(19.6±2.0)ng/L,高于术前的(19.0±2.0)ng/L,P＜0.05,低于其他2组的(22.2±2.1)ng/L、(20.1±2.5)ng/L.结论 远端胃大部切除术后行连续性空肠间置能使犬血浆胃动素和胃泌素在术后维持一个相对较高的水平,而血浆胆囊收缩素则维持一个相对较低的水平.

Effects of alimentary reconstruction on gastrointestinal hormones in a dog model undergoing subtotal gastrectomy

Objective To evaluate effects of alimentary reconstruction procedures (integral continual jejunal interposition, Billroth Ⅱ and isolated jejunal interposition) after subtotal gastrectomy on postoperative plasma gastrin, motilin and cholecystokinin. Methods Twenty-four dogs were divided into 3 groups undergoing distal subtotal gastrectomy and three different digestive tract reconstruction (integral continual jejunal interposition, Billroth Ⅱ and isolated jejunal interposition). The concentration of plasma gastrin, motilin and cholecystokinin were detected by enzyme-linked immunosorbent assay before and after operation. Results Two months after operation, plasma gastrin level of the integral continual jejunal interposition group (2. 2 ±0. 7 ) ng/L, ( 3.9 ± 0. 8 ) ng/L was significantly lower than that of preoperative both in fasting and postprandial state (3.8 ± 1.0) ng/L, (5.3 ± 1.6) ng/L, all P ＜0.05, but was significantly higher than other two groups in postprandial state (2. 7 ± 1.0) ng/L, (3.6 ±0. 6) ng/L, P ＜0. 05. Two months after operation, plasma motilin concentration of integral continual jejunal interposition group (577 ±204) ng/L, (1003 ± 209) ng/L were significantly higher than that of preoperative both in fasting and postprandial (429 ± 128) ng/L, (854 ± 218 ) ng/L, P ＜ 0. 05. The postoperative plasma motilin of integral continual jejunal interposition group ( 1003 ± 209 ) ng/L was significantly higher than other two groups in postprandial state (840 ±205) ng/L, (986 ± 189) ng/L, P ＜0. 05. Two months after operation,plasma cholecystokinin concentration of integral continual jejunal interposition group ( 19.6 ± 2.0 ) ng/Lwere significantly higher than that of preoperative both in postprandial ( 19.0 ± 2. 0) ng/L, P ＜ 0. 05. The postoperative plasma cholecystokinin of integral continual jejunal interposition group ( 19. 6 ± 2. 0) ng/L was significantly lower than other two groups (22.2 ± 2. 1 ) ng/L, (20. 1 ± 2. 5 ) ng/L, P ＜ 0. 05. Conclusion Integral continual jejunal interposition after distal gastrectomy maintains the postoperative plasma motilin and gastrin in a relatively higher level and decreases the concentration of plasma cholecystokinin.