IL-27 Promotes Intestinal Barrier Integrity following Ethanol Intoxication and Burn Injury

Area of Science:

• Gastroenterology
• Immunology
• Trauma Research

Background:

• Alcohol intoxication combined with burn injury presents life-threatening risks, including sepsis and organ failure.
• Acute burns compromise gastrointestinal function, leading to hypoxia, impaired barrier integrity, and dysregulated immune responses.
• Interleukin-27 (IL-27) has emerged as a potential anti-inflammatory agent beneficial for intestinal barrier repair.

Purpose of the Study:

• To investigate the impact of ethanol and burn injury on IL-27 levels in the small intestine.
• To evaluate the therapeutic potential of IL-27 in restoring intestinal barrier function following intoxication and burn.

Main Methods:

• Male C57BL/6 mice were administered ethanol followed by a scald burn.
• Recombinant IL-27 (rIL-27) was administered via resuscitation fluid in burn-injured mice.
• Assessment of intestinal barrier integrity, epithelial cell proliferation, cytokine profiles, and tight junction protein expression.

Main Results:

• IL-27-producing cells were significantly reduced in the small intestine post-injury.
• IL-27 supplementation restored intestinal barrier integrity and transit.
• Mechanisms included increased epithelial cell proliferation, reduced inflammatory cytokines, elevated IL-10, and enhanced tight junction protein expression.

Conclusions:

• IL-27 plays a crucial role in maintaining intestinal barrier function after combined alcohol intoxication and burn injury.
• IL-27 supplementation mitigates inflammation and promotes gut healing by enhancing epithelial repair and barrier integrity.
• IL-27 represents a promising therapeutic target for managing gastrointestinal complications in burn patients with alcohol intoxication.