Tetragastrin

• CAT Number: M123271
• CAS Number: 1947-37-1
• Molecular Formula: C29H36N6O6S
• Molecular Weight: 596.70
• Purity: ≥95%
• Synonyms: (3S)-3-[[(2S)-2-[[(2S)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-4-oxobutanoic acid
• InChI: InChI=1S/C29H36N6O6S/c1-42-12-11-22(33-27(39)20(30)14-18-16-32-21-10-6-5-9-19(18)21)28(40)35-24(15-25(36)37)29(41)34-23(26(31)38)13-17-7-3-2-4-8-17/h2-10,16,20,22-24,32H,11-15,30H2,1H3,(H2,31,38)(H,33,39)(H,34,41)(H,35,40)(H,36,37)/t20-,22-,23-,24-/m0/s1
• InChIKey: RGYLYUZOGHTBRF-BIHRQFPBSA-N
• SMILES: CSCCC(C(=O)NC(CC(=O)O)C(=O)NC(CC1=CC=CC=C1)C(=O)N)NC(=O)C(CC2=CNC3=CC=CC=C32)N

Tetragastrin (Cholecystokinin tetrapeptide; CCK-4) is the C-terminal tetrapeptide of gastrin. Tetragastrin can stimulate gastric secretion[1]. Tetragastrin is a Cholecystokinin (CCK-4) receptor agonist[2]. Gastric mucosal protection[3].
The antagonist of histamine H2-receptors, Cimetidine inhibits the stimulatory effect of histamine in vitro and activates Tetragastrin stimulation of the adenylate cyclase activity. Tetragastrin and histamine activate adenylate cyclase of the rat gastric mucosa via different receptors[4].
In inbred Wistar rats treated with N-methyl-N’-nitro-N-nitrosoguanidine, Tetragastrin (s.c.; 1 mg/kg; every other day) treatment significantly reduces the incidence and the number of adenocarcinomas, and has a significantly lower labelling index of the antral mucosa[1].
Tetragastrin has potential for enhancing gastric mucosal protection associated with mucus secretion and/or mucus synthesis on the surface mucosa of rat gastric mucosa. A significant increase in the mucin content was noted in the mucus gel and surface mucosal layer. An increase in mucin in the mucus gel and surface mucosa would thus appear due to the administration of Tetragastrin[3].

Reference

[1]. M Tatsuta, et al. Effect of 6-hydroxydopamine on gastric carcinogenesis and tetragastrin inhibition of gastric carcinogenesis induced by N-methyl-N’-nitro-N-nitrosoguanidine in Wistar rats. Cancer Res. 1989 Aug 1;49(15):4199-203.
 [Content Brief]

[2]. Nathalie Lara, et al. Pulmonary and systemic nitric oxide measurements during CCK-5-induced panic attacks. Neuropsychopharmacology. 2003 Oct;28(10):1840-5.
 [Content Brief]

[3]. Y Komuro,et al. Effects of tetragastrin on mucus glycoprotein in rat gastric mucosal protection. Gastroenterol Jpn. 1992 Oct;27(5):597-603.
 [Content Brief]

[4]. A A Karelin,et al. Tetragastrin activation of rat gastric mucosa adenyl cyclase in vitro. Biull Eksp Biol Med. 1981 Apr;91(4):440-1.
 [Content Brief]