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  • Title: Plasma cholecystokinin and pancreatic polypeptide response after radical pancreatoduodenectomy with Billroth I and Billroth II type of reconstruction.
    Author: Inoue K, Tobe T, Suzuki T, Hosotani R, Kogire M, Fuchigami A, Miyashita T, Tsuda K, Seino Y.
    Journal: Ann Surg; 1987 Aug; 206(2):148-54. PubMed ID: 3606240.
    Abstract:
    This study was conducted to elucidate plasma cholecystokinin (CCK) and pancreatic polypeptide (PP) response after pancreatoduodenectomy and to compare response of CCK and PP in patients who had pancreatoduodenectomy with Billroth I and Billroth II type of reconstruction. Basal levels of plasma CCK were significantly lower in patients who had pancreatoduodenectomy (9.6 +/- 0.8 pmol/L) than in the control (preoperative patients: 14.6 +/- 2.0 pmol/L) probably because of the removal of the entire duodenum due to pancreatoduodenectomy, since vagotomy, which is concomitantly brought about by pancreatoduodenectomy, does not appear to interfere with release of CCK. Significant amounts of CCK (integrated CCK: 497 +/- 111 pmol-120 min/L), although less amounts than in the preoperative patients (integrated CCK: 901 +/- 167 pmol-120 min/L), were still released in response to oral fatty meal after pancreatoduodenectomy. Plasma CCK response to oral fatty meal was significantly greater in patients who had pancreatoduodenectomy with Billroth I type of reconstruction (integrated CCK: 705 +/- 153 pmol-120 min/L) than in patients who had pancreatoduodenectomy with Billroth II type of reconstruction (248 +/- 63 pmol-120 min/L). Simultaneous measurement of plasma levels of PP revealed complete abolishment of PP response by pancreatoduodenectomy. Since PP secretion can be produced by vagal stimulation, it is most likely that the decreased PP secretion is due to vagotomy rather than removal of the duodenum and pancreas. Significant amounts of CCK released after pancreatoduodenectomy, in which the main sources of release of CCK are removed, may suggest the compensatory mechanism of the remnant upper small intestine. This study also suggests the necessity of re-evaluating Billroth I type of anastomosis as a physiologic reconstruction procedure for the remnant alimentary tract after pancreatoduodenectomy.
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