Correlation of the expression of inflammatory factors with expression of apoptosis-related genes Bax and Bcl-2, in burned rats

Wang,Zhixue; Fang,Jifeng; Xiao,Jizhou

doi:10.3892/etm.2018.7118

Correlation of the expression of inflammatory factors with expression of apoptosis-related genes Bax and Bcl-2, in burned rats

Authors:
- Zhixue Wang
- Jifeng Fang
- Jizhou Xiao
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Affiliations: Department of Burn Surgery, The Second People's Hospital of Liaocheng, Liaocheng, Shandong 252601, P.R. China, Department of Bone Trauma Surgery, The Second People's Hospital of Liaocheng, Liaocheng, Shandong 252601, P.R. China
Published online on: December 20, 2018 https://doi.org/10.3892/etm.2018.7118
Pages: 1790-1796
Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Correlation of the expression of inflammatory factors with expression of apoptosis-related genes, B-cell lymphoma 2 (Bcl-2) and Bcl-2 associated X protein (Bax), in burned rats was investigated. Forty healthy Sprague-Dawley rats were selected and randomly divided into SHAM group (n=10), I˚ burn group (n=10), II˚ burn group (n=10) and III˚ burn group (n=10). Changes in tumor necrosis factor-α (TNF-α), Bax messenger ribonucleic acid (mRNA), Bcl-2 mRNA, Bax protein and Bcl-2 protein expression levels were detected. The correlation of TNF-α, Bax and Bcl-2 with the degree of burn in rats was observed, and the correlation of TNF-α with Bax and Bcl-2 was also analyzed. Moreover, Bax mRNA and Bcl-2 mRNA were detected via reverse transcription-quantitative polymerase chain reaction, and TNF-α, Bax protein and Bcl-2 protein were detected via enzyme-linked immunosorbent assay. In burn groups, TNF-α, Bax mRNA and Bax protein levels were significantly increased at each time point compared with those at the previous time point (P<0.05), but Bcl-2 mRNA and protein levels were significantly decreased compared with those at the previous time point (P<0.05). At the same time point, TNF-α, Bax mRNA, Bcl-2 mRNA, Bax protein and Bcl-2 protein expression levels had statistically significant differences between any given two groups (P<0.05). The TNF-α expression level was positively correlated with Bax expression levels and negatively correlated with Bcl-2 expression levels. Additionally, TNF-α, Bax mRNA and Bax protein had positive correlations with the degree of burn and time after burn, while Bcl-2 mRNA and Bcl-2 protein had negative correlations with the degree of burn and time after burn. Continuous monitoring of changes in the TNF-α level can be used as a means to evaluate the degree of burn and apoptosis, and to prevent the deepening of burn wounds, thus facilitating the early clinical evaluation of prognosis.

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