Biomaterial Database

Feline cholescintigraphy. Studies on role of cholecystokinin in regulation of gallbladder function. 1990

T Niewiarowski, and A H Maurer, and R S Fisher, and B Krevsky

Department of Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania.

Quantitative cholescintigraphy using technetium-99m-disofenin was employed to study the kinetics of gallbladder filling and emptying in cats. The radionuclide rapidly visualizes the gallbladder, with activity continuing to rise during the 60 minutes after injection. The gallbladder emptied in a dose-response manner to the intravenous administration of the octapeptide of cholecystokinin (CCK-OP). An infusion of 10 ng/kg/min of CCK-OP resulted in 75% emptying of the gallbladder at 30 min compared to control. This was significantly greater emptying than with an infusion of either 0.1 or 1.0 ng/kg/min. After administration of a fatty meal, the 30-min gallbladder emptying was 73% of control, similar to the response to CCK-OP at a dose of 10 ng/kg/min. Intravenous administration of 1 mg/kg of L-364,718 (a CCK-receptor antagonist) completely inhibited the gallbladder response to a fatty meal but had no effect on gallbladder filling in the fasting state. These results suggest that feline cholescintigraphy can be used for the quantitative study of gallbladder emptying. While CCK appears to be the primary modulator of gallbladder contraction after a fatty meal, no influence of CCK was detected in the interdigestive (fasting) state.

UI	MeSH Term	Description	Entries
D007098	Imino Acids	Carboxylic acids that contain an imino group (C	Amino Acids, Secondary,Acids, Secondary Amino,Secondary Amino Acids,Acids, Imino
D008297	Male		Males
D009119	Muscle Contraction	A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.	Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D011877	Radionuclide Imaging	The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.	Gamma Camera Imaging,Radioisotope Scanning,Scanning, Radioisotope,Scintigraphy,Scintiphotography,Imaging, Gamma Camera,Imaging, Radionuclide
D011949	Receptors, Cholecystokinin	Cell surface proteins that bind cholecystokinin (CCK) with high affinity and trigger intracellular changes influencing the behavior of cells. Cholecystokinin receptors are activated by GASTRIN as well as by CCK-4; CCK-8; and CCK-33. Activation of these receptors evokes secretion of AMYLASE by pancreatic acinar cells, acid and PEPSIN by stomach mucosal cells, and contraction of the PYLORUS and GALLBLADDER. The role of the widespread CCK receptors in the central nervous system is not well understood.	CCK Receptors,Caerulein Receptors,Cholecystokinin Octapeptide Receptors,Cholecystokinin Receptors,Pancreozymin Receptors,Receptors, CCK,Receptors, Caerulein,Receptors, Pancreozymin,Receptors, Sincalide,Sincalide Receptors,CCK Receptor,CCK-4 Receptors,CCK-8 Receptors,Cholecystokinin Receptor,Receptors, CCK-4,Receptors, CCK-8,Receptors, Cholecystokinin Octapeptide,CCK 4 Receptors,CCK 8 Receptors,Octapeptide Receptors, Cholecystokinin,Receptor, CCK,Receptor, Cholecystokinin,Receptors, CCK 4,Receptors, CCK 8
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D002766	Cholecystokinin	A peptide, of about 33 amino acids, secreted by the upper INTESTINAL MUCOSA and also found in the central nervous system. It causes gallbladder contraction, release of pancreatic exocrine (or digestive) enzymes, and affects other gastrointestinal functions. Cholecystokinin may be the mediator of satiety.	Pancreozymin,CCK-33,Cholecystokinin 33,Uropancreozymin
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005260	Female		Females
D005502	Food	Substances taken in by the body to provide nourishment.	Foods