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  • Title: Influence of intravenous pirenzepine on gastric acid and pepsin in man.
    Author: el-Sabbagh HN, Prinz RA, Welbourn RB, Baron JH.
    Journal: Scand J Gastroenterol Suppl; 1980; 66():73-7. PubMed ID: 6787694.
    Abstract:
    Patients with dyspepsia were asked to volunteer for two gastric secretion tests preceded by a single intravenous injection of pirenzepine 10 mg in the one and 0.9% saline in the other (in random order). In each test gastric secretion was aspirated continuously. 0.9% saline was infused intravenously for 30 minutes followed by insulin 0.15 micrograms/kg-h for 90 minutes, saline for 30 minutes and finally pentagastrin for 90 minutes in doses of either 6, 1, 0.5 or 0.25 micrograms/kg-h. Gastric samples were analysed for volume, pH, titratable acidity and pepsin. Basal outputs of acid and pepsin were not altered by pirenzepine. Insulin-stimulated acid output was significantly reduced (p less than 0.05) from a mean of 32.7 to 22.6 mmol/h (-31%). The mean percentage reduction was 16%. Acid and pepsin outputs after pentagastrin 0.25-6 micrograms/kg-h were not significantly altered by this dose of pirenzepine.
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