نتایج جستجو برای: گیرنده های cck

تعداد نتایج: 482317  

Journal: :The Journal of clinical investigation 1979
B S Schneider J W Monahan J Hirsch

Under certain conditions, exogenously administered cholecystokinin (CCK) or its COOH-terminal octapeptide can terminate feeding and cause behavioral satiety in animals. Furthermore, high concentrations of CCK are normally found in the brains of vertebrate species. It has thus been hypothesized that brain CCK plays a role in the control of appetite. To explore this possibility, a COOH-terminal r...

2013
David S. Weinberg Bruce Ruggeri Michael T. Barber Sanjoy Biswas Scott A. Waldman

Cholecystokinin (CCK) plays an important role in pancreatic carcinogenesis. While human CCK-A and -B receptors have been fully characterized, their relative roles in human pancreatic adenocarcinoma remain unclear. Thus, expression of CCK-A and -B receptors in normal human pancreas, pancreatic adenocarcinomas, and other human extrapancreatic tissues and malignancies was examined, using reverse t...

Journal: :Nihon Naibunpi Gakkai zasshi 1985
J A Williams

Brain-gut peptide action has been best studied in certain target cells of the gastrointestinal tract such as isolated pancreatic acini. Cholecystokinin (CCK) activation of pancreatic digestive enzyme secretion is initiated by specific receptors present in the basolateral membrane of the acinar cell. These receptors are highly selective for CCK and readily discriminate it from the homologous pep...

Journal: :Gut 1989
J W Konturek S J Konturek A Kurek J Bogdal J Oleksy L Rovati

The postprandial contractions of the gall bladder result from the interaction of neurohormonal factors but their relative contribution is unknown. This study was designed to determine the role of cholecystokinin (CCK) in gall bladder contractions using a highly selective and potent CCK-receptor antagonist, CR-1505 (loxiglumide) in healthy men either infused with exogenous CCK in graded doses (1...

Journal: :Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas 2006
S R Martins R B de Oliveira G Ballejo

Cholecystokinin (CCK) influences gastrointestinal motility, by acting on central and peripheral receptors. The aim of the present study was to determine whether CCK has any effect on isolated duodenum longitudinal muscle activity and to characterize the mechanisms involved. Isolated segments of the rat proximal duodenum were mounted for the recording of isometric contractions of longitudinal mu...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2009
Chun-Min Lo Min Xu Qing Yang Shuqin Zheng Katherine M Carey Matthew R Tubb W Sean Davidson Min Liu Stephen C Woods Patrick Tso

CCK and apolipoprotein AIV (apo AIV) are gastrointestinal satiety signals whose synthesis and secretion by the gut are stimulated by fat absorption. Intraperitoneally administered CCK-8 is more potent in suppressing food intake than a similar dose administered intravenously, but the reason for this disparity is unclear. In contrast, both intravenous and intraperitoneally administered apo AIV ar...

Journal: :The Journal of clinical investigation 1996
Y Li C Owyang

In this study we tested the hypothesis that peptone in the intestine stimulates the secretion of the CCK-releasing peptide (CCK-RP) which mediates CCK secretion, and examined the enteric neural circuitry responsible for CCK-RP secretion. We used a "donor-recipient" rat intestinal perfusion model to quantify the CCK-RP secreted in response to nutrient stimulation. Infusion of concentrated intest...

2000
BING HAN Craig D. Logsdon

Han, Bing, and Craig D. Logsdon. CCK stimulates mob-1 expression and NF-kB activation via protein kinase C and intracellular Ca21. Am. J. Physiol. Cell Physiol. 278: C344–C351, 2000.—Supraphysiological concentrations of cholecystokinin (CCK) induce chemokine expression in rat pancreatic acini through the activation of the transcription factor NF-kB. In the current study, the intracellular signa...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 1999
Karen A Lacourse Lisa J Swanberg Patrick J Gillespie Jens F Rehfeld Thomas L Saunders Linda C Samuelson

A CCK-deficient mouse mutant generated by gene targeting in embryonic stem cells was analyzed to determine the importance of CCK for growth and function of the exocrine pancreas and for pancreatic adaptation to dietary changes. RIAs confirmed the absence of CCK in mutant mice and demonstrated that tissue concentrations of the related peptide gastrin were normal. CCK-deficient mice are viable an...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Phoebe A Phillips Lu Yang Arthur Shulkes Alain Vonlaufen Anne Poljak Sonia Bustamante Alessandra Warren Zhihong Xu Michael Guilhaus Romano Pirola Minoti V Apte Jeremy S Wilson

The pancreatic secretagogue cholecystokinin (CCK) is widely thought to stimulate enzyme secretion by acinar cells indirectly via activation of the vagus nerve. We postulate an alternative pathway for CCK-induced pancreatic secretion. We hypothesize that neurally related pancreatic stellate cells (PSCs; located in close proximity to the basolateral aspect of acinar cells) play a regulatory role ...

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