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Published on: December 31, 2013
The Role of the TRPV4 Channel in Intestinal Physiology and Pathology
Dandan Liu1, Mingli Mao1, Wenjia Liu1
1Department of Metabolism and Endocrinology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, People's Republic of China.
Abstract:
The transient receptor potential vanilloid 4 channel (TRPV4) is an important member of the TRP superfamily of cation channels. The channel can be activated by different physical and chemical stimuli, such as heat, osmotic, and mechanical stress. It regulates the release of nociceptive peptides (substance P and calcitonin gene-related peptide), and mediates neurogenic inflammation, which indicates the involvement of TRPV4 as a nociceptor. Previous studies show that TRPV4 regulates the contraction of intestinal smooth muscle, mucosal barrier permeability, intestinal ion transport, activation of submucosal enteric neurons, and generation of immune cells. TRPV4 is involved in various pathophysiological activities, and altered TRPV4 expression has been detected in some intestinal diseases (IBD, IBS, intestinal tumors, etc). Evidence indicates that TRPV4 plays a noxious role in intestinal barrier function when the intestine is damaged. This review focuses on the role of the TRPV4 channel in the physiological and pathological functions of the intestine, and evaluates the potential clinical significance to target TRPV4 channel in the treatment of intestinal diseases.
Insights
The transient receptor potential vanilloid 4 (TRPV4) channel plays a key role in intestinal function and disease. Targeting TRPV4 may offer new treatments for various intestinal disorders.
Area of Science:
- Physiology
- Gastroenterology
- Molecular Biology
Background:
- The transient receptor potential vanilloid 4 (TRPV4) channel is a cation channel activated by physical and chemical stimuli.
- TRPV4 acts as a nociceptor, regulating peptide release and neurogenic inflammation.
- It influences intestinal smooth muscle contraction, barrier permeability, ion transport, and immune cell activity.
Purpose of the Study:
- To review the physiological and pathological roles of the TRPV4 channel in the intestine.
- To evaluate the potential of targeting TRPV4 for treating intestinal diseases.
Main Methods:
- Literature review of existing studies on TRPV4 function in the intestine.
- Analysis of TRPV4's involvement in various intestinal pathophysiological conditions.
Main Results:
- TRPV4 is implicated in regulating key intestinal functions, including smooth muscle contraction and barrier integrity.
- Altered TRPV4 expression is observed in intestinal diseases like IBD, IBS, and tumors.
- TRPV4 appears to play a detrimental role in intestinal barrier function during damage.
Conclusions:
- TRPV4 is a significant factor in both normal intestinal physiology and disease pathogenesis.
- The TRPV4 channel represents a promising therapeutic target for managing intestinal disorders.
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