YM022 is a very potent, selective antagonist of the gastrin/cholecystokinin (CCK)-B receptor.
YM022 is a very potent, selective antagonist of the gastrin/cholecystokinin (CCK)-B receptor. The Ki value for CCKB is 68 pM vs 63 nM for CCKA. In rats, YM022 inhibits pentagastrin-induced gastric emptying with an ED50 or 7.8 nM/kg.
Rat stomach ECL cells are rich in histamine and chromogranin A-derived peptides, such as pancreastatin. Gastrin causes the parietal cells to secrete acid by flooding them with histamine from the ECL cells. In the past, gastric histamine release has been
Gastrin acts via cholecystokinin-B/gastrin receptors to control histamine- and chromogranin A-producing ECL cells, which constitute the quantitatively predominant endocrine cell population in the acid-producing part of the rat stomach. Cholecystokinin-B receptor blockade is known to suppress the activity of ECL
The Journal of biological chemistry, 280(39), 33368-33373 (2005-08-05)
The third intracellular loop domain of G protein-coupled receptors regulates their desensitization, internalization, and resensitization. Colorectal and pancreatic cancers, but not the nonmalignant tissue, express a splice variant of the cholecystokinin 2 receptor (CCK2R) called CCK(2i4sv)R that, because of intron
In the present study, we investigated whether cholecystokinin (CCK) or its structurally related peptide gastrin participates in long term regulation of adipocyte leptin secretion. The levels of circulating leptin observed after 2 and 6 h of refeeding in 18-h fast
Cell and tissue research, 299(1), 81-95 (2000-02-02)
The ECL cells in the oxyntic mucosa of rat stomach produce histamine and chromogranin A-derived peptides such as pancreastatin. The cells respond to gastrin via cholecystokinin-2 (CCK2) receptors. A CCK2 receptor blockade was induced by treatment (for up to 8
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