Effects of Parecoxib Sodium on Early Cognitive Impairment and Inflammation Levels in Burned Rats

Abstract

To study the effect of parecoxib sodium in alleviating inflammation in burned rats and restoring cognitive function in burned rats. A total of 30 specific pathogen free grade Sprague-Dawley rats were randomly divided into 6 groups: (1) blank control group (group C), (2) Sham surgery group (group Sham), (3) second-degree burn model (group B), (4) low-dose (1 mg/kg/d) parecoxib sodium (group L + B), (5) medium-dose (10 mg/kg/d) parecoxib sodium (group M + B), and (6) high-dose (20 mg/kg/d) parecoxib sodium (group H + B). ELISA measures inflammatory factors interleukin (IL)-2, IL-6, tumor necrosis factor-alpha (TNF-α), and interferon-gamma (IFN-γ), and cognitive function factors neuron-specific enolase (NSE), cortisol, and S-100β. Combined with water maze and dark-avoidance experiments to further verify the recovery of cognitive function in rats. The contents of IL-2, TNF-α, and IL-6 in group M + B were significantly lower than those in group Sham (P < .05), and the content of IFN-γ was significantly lower than that in group Sham (P < .05). The cognitive markers NSE, S-100β, and cortisol levels in group M + B were significantly higher than those in group Sham at 2 h, 1 d, 5 d, and 10 d after operation (P < .05). In the group M + B dark-avoidance experiment, the number of probes and errors was not significantly different than those in group Sham and group C (P > .05), and the number of times group M + B found a platform in the water maze experiment and crossed the platform was second only to group B and group C. Parecoxib sodium can effectively reduce inflammation in burn rats and promote cognitive recovery in burn rats, and the optimal dose of parecoxib sodium for burn rats is 10 mg/kg.

Keywords: burned rats; cognitive function; inflammatory factor; optimal dosage; parecoxib sodium.