Effect of intra-abdominally administered mesalazine (5-aminosalicylic acid) in experimental peritonitis

Area of Science:

• Experimental Medicine
• Pharmacology

Background:

• Secondary peritonitis is a serious condition often requiring surgical intervention.
• Inflammatory mediators such as TNF-alpha, IL-1 beta, IL-6, and CRP play a crucial role in the pathogenesis of peritonitis and systemic sepsis.
• Mesalazine is a known anti-inflammatory drug.

Purpose of the Study:

• To investigate the efficacy of mesalazine in reducing inflammatory markers and lung inflammatory changes in a rat model of secondary peritonitis.
• To evaluate mesalazine's effect on tumor necrosis factor-alpha (TNF-alpha), interleukin-1 beta (IL-1 beta), interleukin-6 (IL-6), and C-reactive protein (CRP) levels.
• To assess the impact of mesalazine on leukocyte infiltration in lung tissue.

Main Methods:

• Twenty-four male Sprague-Dawley rats were used and divided into three groups: no irrigation, isotonic solution irrigation, and mesalazine irrigation.
• Secondary peritonitis was induced via cecum penetration.
• Irrigation was performed 24 hours post-peritonitis induction, with blood and lung tissue samples collected at 48 hours.

Main Results:

• Mesalazine irrigation (Group III) resulted in significantly lower levels of TNF-alpha, IL-1 beta, and CRP compared to the control groups (p<0.005).
• Histological examination revealed reduced leukocyte infiltration in the lungs of rats treated with mesalazine.
• IL-6 levels were also measured, though specific comparative results were not detailed in the abstract.

Conclusions:

• Peritoneal irrigation with mesalazine effectively reduced key inflammatory markers and lung inflammation in experimental secondary peritonitis.
• These findings suggest that mesalazine may be a beneficial therapeutic option for patients undergoing surgery for secondary peritonitis.
• Further clinical studies are warranted to confirm the utility of mesalazine in managing human cases of secondary peritonitis.