proton pumps

proton pumps

Systems of enzymes that transport hydrogen ions across membranes, using energy in the process. Proton pumps that produce hydrochloric acid in the stomach derive their energy from hydrolysis of ATP.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Proton pumps have several physiological functions in neurons and contribute to acid-base and potassium homeostasis [19].
It has also been shown that PPIs can inhibit vacuolar proton pumps, which acidify lysosomes by pumping protons from the cytoplasm to the lumen of vacuoles in microglia and macrophages [40, 41].
Proton pump inhibitors act by blocking the proton pumps that secrete acid in the stomach, which reduces acid levels.
In profoundly troubling studies published in 2015-2016, acid reducing drugs called proton pump inhibitors, or PPIs, were associated with an increased risk of dementia.
These H+/K+ ATPase pumps, often called proton pumps, are irreversibly inhibited by PPIs and this is the action which brings about the desired clinical effect of suppression of gastric acid secretion.
PPIs by doing what they do best, inhibiting proton pumps, interfere with this acidification process that is important for cancer cell survival and growth.
Proton pump inhibitors (PPIs) are prescribed for severe or recurring indigestion or peptic ulcers and work by blocking the actions of proteins called proton pumps, which are partly responsible for producing stomach acid.
Osteoclasts also have proton pumps, and some researchers have suggested that PPIs have the potential to limit the activity of these proton pumps, leading to reduced bone resorption.
Your child's stomach is lined with special cells that contain unique proton pumps. These pumps transport protons (the hydrogen in hydrochloric acid--stomach acid) into the stomach, resulting in the acidification of the stomach's contents.
PPIs only block actively secreting proton pumps. Hatlebakk and colleagues showed that PPIs, taken 30 minutes before breakfast rather than without breakfast, controlled daytime gastric acidity significantly better, since breakfast was a potent stimulus for activation of proton pumps.
These medicines block the secretion of digestive acids by proton pumps in the stomach's lining.
It is known that proton pump inhibitors (PPIs) may interfere with calcium absorption by inducing hypochlorhydria.