They used a genetic technique known as 16S rRNA sequencing to determine which bacterial species were living in the stomachs of healthy people, people receiving PPIs, and people with reduced gastric acid secretion as a result of H. pylori infection or autoimmune disease. (sciencedaily.com)
Genetic ablation of a Na + / H + exchanger (NHE2), which is expressed in the stomach at high levels, leads to a decrease in gastric acid secretion, along with decreased viability of parietal cells, severe metaplasia, and hyperplasia of gastric mucosa. (emedicine.medscape.com)
Wald, A and Adibi, SA, Stimulation of gastric acid secretion by glycine and related oligopeptides in humans, American Journal of Physiology, 1982, 5, 242, G86 - G88. (westonaprice.org)