Bowel injury: current and evolving management strategies

Area of Science:

• Oncology
• Gastroenterology
• Radiation Medicine

Background:

• Intestinal radiation toxicity is a significant dose-limiting factor in abdominal and pelvic radiation therapy.
• Delayed bowel toxicity negatively impacts the quality of life for a large number of cancer survivors.
• Over half of US cancer survivors have had abdominal or pelvic tumors, with many undergoing radiation therapy.

Purpose of the Study:

• To review current diagnostic and management principles for intestinal radiation injury.
• To provide an overview of investigational strategies for reducing radiation-induced bowel toxicity.
• To highlight the importance of understanding pathophysiology for developing new interventions.

Main Methods:

• Review of current clinical practices in diagnosing and managing intestinal radiation injury.
• Overview of preclinical and investigational therapeutic strategies.
• Discussion of preclinical testing in animal models for clinical translation.

Main Results:

• Current advances include dose-sculpting techniques to reduce toxicity.
• Investigational strategies encompass free radical scavengers, antioxidants, cytoprotective agents, cytokines, and enterotrophic interventions.
• Modulators of intraluminal factors, endothelial dysfunction, and neuroimmune interactions are also explored.

Conclusions:

• Improved understanding of bowel injury pathophysiology is crucial for advancing treatment.
• Investigational strategies hold promise for significantly improving outcomes and quality of life for cancer survivors.
• Successful translation of these strategies could enhance cancer cure rates and long-term patient well-being.