Inflammatory response markers in rats undergoing abdominal surgical procedures

Area of Science:

• Veterinary Surgery
• Surgical Inflammation
• Biomarker Analysis

Background:

• Evaluating postoperative inflammatory response is crucial in abdominal surgery.
• Identifying reliable inflammatory markers aids in patient management and outcome prediction.
• This study investigates key inflammatory markers in a rat model of abdominal surgery.

Purpose of the Study:

• To assess the efficacy of cortisol, IL-6, CRP, and WBC count as indicators of the postoperative inflammatory response.
• To compare the changes in these markers across different abdominal surgical procedures in rats.
• To determine the influence of time post-surgery on these inflammatory markers.

Main Methods:

• 152 Wistar albino rats were divided into 7 surgical groups (control, hepatectomy, splenectomy, nephrectomy, colectomy, gastrectomy, sham) and sampled at 6, 24, and 48 hours post-operation.
• Plasma concentrations of interleukin-6 (IL-6), cortisol, C-reactive protein (CRP), and white blood cell (WBC) count were measured.
• Statistical analysis was performed to determine the significance of surgery type and time on marker levels.

Main Results:

• Both surgery type and time significantly impacted IL-6 levels (P<0.0001).
• CRP levels were primarily influenced by the type of surgery (P<0.0001).
• Cortisol levels were not significantly affected by surgery type or time.
• WBC count was significantly influenced by the time elapsed after surgery (P<0.0001).

Conclusions:

• Postoperative inflammatory markers IL-6, CRP, and WBC count exhibit dynamic changes at different time points following abdominal surgery.
• Cortisol levels do not correlate with surgical procedure type or time elapsed.
• WBC count demonstrates a decrease over time post-surgery.
• None of the evaluated markers showed specificity to the category of abdominal surgical procedure performed.