G17

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Phase I/II study of G17-DT, an anti-gastrin immunogen, in advanced colorectal cancer.

Gastrin is a growth factor for colorectal cancer, and therefore, anti-gastrin hormone therapy has a potential role in treatment of this disease. The gastrin immunogen gastrin-17-diphtheria toxoid (G17-DT; Gastrimmune) produces anti-G17 antibodies that have been shown to be effective in the treatment of colorectal carcinoma in preclinical models. Fifty patients with advanced colorectal cancer we...

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Effect of gastrin heptadecapeptide (G17) on oesophageal contractions in patients with diffuse oesophageal spasm.

An intravenous bolus of pentagastrin significantly increased the amplitude and duration of oesophageal body contractions in seven patients with diffuse oesophageal spasm (DES) when compared with five normal subjects (P greater than 0.05). In order to determine whether this stimulation also occurred at physiological gastrin concentrations, the effect of an intravenous infusion of gastrin heptade...

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Role of small GTP binding proteins in the growth-promoting and antiapoptotic actions of gastrin.

G17 has growth promoting and antiapoptotic effects on the AR4-2J pancreatic acinar cell line. We previously reported that whereas MAPK regulates G17-stimulation of AR4-2J cell proliferation, Akt mediates the antiapoptotic action of G17. We examined the signal-transduction pathways mediating G17 stimulation of AR4-2J cell growth and survival. G17 activated the small GTP binding proteins Ras, Rac...

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Glycogen Synthase Kinase-3beta regulates Snail and beta-catenin during gastrin-induced migration of gastric cancer cells

BACKGROUND The gastrointestinal peptide hormone gastrin is known to regulate various cellular processes including proliferation, migration and metastasis in gastrointestinal (GI) cells. The studies described here were undertaken to elucidate in detail the signaling pathways mediating the migratory responses of amidated gastrin (G17) and to understand the involvement of the serine/threonine kina...

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Molecular mechanisms for the antiapoptotic action of gastrin.

Gastrin (G17) has a CCK-B receptor-mediated growth-promoting effect on the AR42J rat acinar cell line. We examined whether G17 inhibits apoptosis induced by serum withdrawal of AR42J cells and CHO-K1 cells stably expressing CCK-B receptors (CHO-K1/CCK-B cells). Cellular apoptosis was measured by flow cytometry and the terminal deoxynucleotidyltransferase-mediated dUTP-FITC nick end-labeling met...

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ژورنال

عنوان ژورنال: Arthropod Management Tests

سال: 2012

ISSN: 2155-9856

DOI: 10.4182/amt.2012.g17