Proton pump inhibitors: actions and reactions

Area of Science:

• Gastroenterology
• Pharmacology

Background:

• Proton pump inhibitors (PPIs) are the second most prescribed drug class in the U.S.
• Increased PPI use correlates with rising rates of reflux disease.
• PPIs have largely replaced H-2 receptor antagonists due to efficacy and lack of tachyphylaxis.

Purpose of the Study:

• To explore potential undesired physiological effects of PPIs.
• To investigate non-gastric effects linked to H(+), K(+)-ATPase ubiquity.
• To examine PPI influence on upper GI tract physiology.

Main Methods:

• Review of current literature on PPI utilization and effects.
• Analysis of physiological alterations induced by elevated intragastric pH.
• Examination of H(+), K(+)-ATPase distribution and function.

Main Results:

• PPIs elevate intragastric pH, altering gastric physiology.
• Widespread H(+), K(+)-ATPase may lead to non-gastric effects.
• PPIs can potentially induce transepithelial leak.

Conclusions:

• The widespread use of PPIs necessitates understanding their full physiological impact.
• Potential for off-target effects warrants further investigation.
• PPIs may influence gastrointestinal and potentially other organ systems.