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Cyclic nucleotides, gut physiology and inflammation
Hari Prasad1, Avinash Ravindranath Shenoy2, Sandhya Srikant Visweswariah1
1Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bengaluru, India.
Insights
Pathogenic bacteria cause diarrhea by disrupting gut ion and water secretion via cyclic adenosine 3
Area of Science:
- Gastroenterology
- Microbiology
- Cellular Biology
Background:
- Diarrheal disease is a major global health concern, particularly in children.
- Gut barrier erosion and inflammation are secondary effects of diarrhea.
- Pathogenic bacteria contribute significantly to diarrheal diseases.
Purpose of the Study:
- To investigate the role of cyclic nucleotides in pathogenic bacteria-mediated diarrhea.
- To explore the impact of ion and water secretion on gut homeostasis.
- To examine the potential modulation of inflammasome signaling by ion flux.
Main Methods:
- Focus on pathogenic bacteria-mediated diarrhea.
- Emphasis on cyclic adenosine 3',5'-monophosphate (cAMP) and cyclic guanosine 3',5'-monophosphate (cGMP) signaling pathways.
- Speculation on ion flux effects on inflammasome signaling.
Main Results:
- Cyclic nucleotides (cAMP and cGMP) drive signaling outputs leading to gut epithelial ion and water secretion.
- Aberrant ion efflux and influx are implicated in diarrhea.
- Potential modulation of inflammasome signaling by ion transport.
Conclusions:
- Understanding cyclic nucleotide signaling is crucial for addressing bacterial diarrhea.
- Ion transport dysregulation impacts gut barrier integrity and function.
- Further research into ion flux and inflammasome interactions is warranted.
Abstract:
Misregulation of gut function and homeostasis impinges on the overall well-being of the entire organism. Diarrheal disease is the second leading cause of death in children under 5 years of age, and globally, 1.7 billion cases of childhood diarrhea are reported every year. Accompanying diarrheal episodes are a number of secondary effects in gut physiology and structure, such as erosion of the mucosal barrier that lines the gut, facilitating further inflammation of the gut in response to the normal microbiome. Here, we focus on pathogenic bacteria-mediated diarrhea, emphasizing the role of cyclic adenosine 3',5'-monophosphate and cyclic guanosine 3',5'-monophosphate in driving signaling outputs that result in the secretion of water and ions from the epithelial cells of the gut. We also speculate on how this aberrant efflux and influx of ions could modulate inflammasome signaling, and therefore cell survival and maintenance of gut architecture and function.
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