Colonic Wall Overview
The colonic wall is the layered structure forming the outer boundary of the colon, a major part of the large intestine. It comprises the mucosa, submucosa, muscularis propria, and serosa/subserosa. Its primary functions include absorption of water and electrolytes, mucus production for lubrication, and peristalsis to propel feces. The wall contains various cell types, including absorptive columnar cells, goblet cells, enteroendocrine cells, Paneth cells, and stem cells. It is a complex anatomical structure rather than a single molecular entity or receptor, and is affected by a variety of diseases and therapeutic interventions.
Mechanism of Action
Varies depending on the drug. Anti-inflammatory drugs reduce inflammation, antibiotics target bacteria, chemotherapeutic agents target cancer cells, laxatives promote bowel movements, antidiarrheals slow down bowel movements.
Biological Functions
Disease Associations
Safety Considerations
- Drug-induced colitis
- Increased risk of infection
- Impaired absorption
- Perforation
Interacting Drugs
Associated Biomarkers
| Biomarker |
|---|
| Fecal Calprotectin (inflammation) |
| Carcinoembryonic Antigen (CEA) (colorectal cancer) |
| Histological findings (inflammation, dysplasia, cancer) |
| Microbiome composition (dysbiosis) |
Gosset