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Effect of Intravenous Fat on Cholecystokinin Secretion and Gallbladder Motility in Man

Departments of Gastroenterology and Hepatology, University Hospital, Leiden, The Netherlands

A.A.M. Masclee, MD, PHD

Departments of Gastroenterology and Hepatology, University Hospital, Leiden, The Netherlands

M.C.W. Jebbink

Departments of Gastroenterology and Hepatology, University Hospital, Leiden, The Netherlands

J. Schipper, MD, PHD

Deparmtent of Radiology, University Hospital, Leiden, The Netherlands

J.B.M.J. Jansen, MD, PHD

Departments of Gastroenterology and Hepatology, University Hospital, Leiden, The Netherlands

C.B.H.W. Lamers, MD, PHD

Departments of Gastroenterology and Hepatology, University Hospital, Leiden, The Netherlands

During total parenteral nutrition (TPN) gallbladder bile stasis and hypomotility have been well documented. Little is known, however, about the effect of the separate components of TPN on gallbladder motor function. Inasmuch as fat, administered intraduodenally, is a potent stimulus of cholecystokinin (CCK) secretion and gallbladder contraction we have investigated whether intravenous (IV) fat affects gallbladder motility. Six healthy volunteers were studied on two separate occasions, during infusion of Intralipid 10%, 200 mL/h or saline infusion (control) for 3 hours, to evaluate the effect of IV infusion of fat on (1) plasma CCK concentration and gallbladder volume and (2) CCK-induced gallbladder emptying. Intravenous infusion of Intralipid resulted in significant increases in serum triglycerides from 0.9 ± 0.1 to 5.1 ± 1.3 mmol/L (at 90 min). During fat infusion no significant changes in plasma CCK and gallbladder volume were noted when compared with basal values or to the control experiment. During IV fat, concomitant infusion of 0.25, 0.5, and 1.0 Ivy dog unit (IDU) per kilogram per hour of CCK-33 resulted in a significant reduction in gallbladder volume from 26 ± 6 cm³ (basal) to 15 ±4cm³ (p<.05),6±2cm ³(p<.05) and 2.5±1cm³(p< .05), respectively. No significant differences in CCK-induced gallbladder emptying were observed between IV fat and saline infusion (control). It is concluded that, in contrast to intraduodenal fat, IV infusion of fat does not affect (1) basal plasma CCK and gallbladder volume and (2) CCK-induced gallbladder contraction. (Journal of Parenteral and Enteral Nutrition 16:16-19, 1992)

Journal of Parenteral and Enteral Nutrition, Vol. 16, No. 1, 16-19 (1992)
DOI: 10.1177/014860719201600116


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