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Updated: Jun 27, 2026

Gastrointestinal Motility Monitor (GIMM)
Published on: December 1, 2010
5-hydroxytryptamine and the gastrointestinal tract: where next?
1Immuno-inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Stevenage, Hertfordshire, SG1 2NY, UK. gareth_j_sanger@gsk.com
Serotonin (5-hydroxytryptamine or 5-HT) research in the gut has led to new drugs and treatments for millions. Despite challenges with current medications, future research offers a path forward for gastrointestinal disorder therapies.
Area of Science:
- Gastroenterology
- Neurogastroenterology
- Pharmacology
Background:
- Serotonin (5-hydroxytryptamine, 5-HT) plays a crucial role in gastrointestinal physiology and disease.
- Research has identified new 5-HT receptors and improved understanding of drug side effects.
- Millions have benefited from drugs modulating 5-HT function for conditions like IBS, gastroparesis, and constipation.
Purpose of the Study:
- To review the background of 5-HT in gastrointestinal function and disease.
- To discuss drugs targeting 5-HT3 and 5-HT4 receptors.
- To explore future research directions for developing novel gastrointestinal therapies.
Main Methods:
- Literature review of 5-HT in gastrointestinal physiology and disease.
- Analysis of drugs targeting 5-HT3 and 5-HT4 receptors.
- Discussion of emerging research avenues and potential therapeutic targets.
Main Results:
- 5-HT research has advanced the treatment of various gastrointestinal disorders.
- Safety concerns with alosetron and tegaserod highlight the need for careful drug development.
- New research directions offer potential for safer and more effective therapies.
Conclusions:
- Gastrointestinal 5-HT research is at a critical juncture due to drug safety issues.
- Future research should focus on novel targets like 5-HT2B, 5-HT7 receptors, and tryptophan catabolites.
- Modulating 5-HT availability and exploring new receptor functions are key to advancing treatment.
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