Journal
FRONTIERS IN PHARMACOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphar.2021.711500
Keywords
aprepitant; domperidone; erythromycin; functional dyspepsia; gastroparesis; ghrelin; prucalopride; relamorelin
Categories
Funding
- National Institutes of Health [R01-DK122280]
- Takeda
- Vanda
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Prokinetic agents enhance gastrointestinal muscular contractions to improve transit of intra-luminal content. Metoclopramide is the only FDA-approved medication for gastroparesis in the United States, while domperidone can be prescribed through a special program. Newer agents are being developed targeting different gastric motor functions.
Prokinetic agents amplify and coordinate the gastrointestinal muscular contractions to facilitate the transit of intra-luminal content. Following the institution of dietary recommendations, prokinetics are the first medications whose goal is to improve gastric emptying and relieve symptoms of gastroparesis. The recommended use of metoclopramide, the only currently approved medication for gastroparesis in the United States, is for a duration of less than 3 months, due to the risk of reversible or irreversible extrapyramidal tremors. Domperidone, a dopamine D2 receptor antagonist, is available for prescription through the FDA's program for Expanded Access to Investigational Drugs. Macrolides are used off label and are associated with tachyphylaxis and variable duration of efficacy. Aprepitant relieves some symptoms of gastroparesis. There are newer agents in the pipeline targeting diverse gastric (fundic, antral and pyloric) motor functions, including novel serotonergic 5-HT4 agonists, dopaminergic D-2/3 antagonists, neurokinin NK1 antagonists, and ghrelin agonist. Novel targets with potential to improve gastric motor functions include the pylorus, macrophage/inflammatory function, oxidative stress, and neurogenesis. In the current review, we discuss the use of pharmacological approaches with potential to enhance motor functions in the management of gastroparesis.
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