ATP serves an anti-inflammatory role by enhancing β-defensin-2 response in acute pneumonia of rat

Shen,Zhenwei; Zhou,Yun; Qu,Le; Lei,Han

doi:10.3892/br.2017.906

ATP serves an anti-inflammatory role by enhancing β-defensin-2 response in acute pneumonia of rat

Authors:
- Zhenwei Shen
- Yun Zhou
- Le Qu
- Han Lei
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Affiliations: Intensive Care Unit, Shanghai International Medical Center, Shanghai 201318, P.R. China, Department of Cardiology, Chinese Traditional Medical Hospital Affiliated to Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China, Department of Cadre, Chinese Traditional Medical Hospital Affiliated to Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China, Department of Respiratory Medicine, Shanghai East Hospital, Shanghai 200120, P.R. China
Published online on: May 8, 2017 https://doi.org/10.3892/br.2017.906
Pages: 649-653
Copyright: © Shen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the current study was to evaluate the effect of ATP on the expression of rat β-defensin-2 (rBD-2) in a time‑dependent manner, as well as its therapeutic value in an acute pneumonia rat model. A total of 30 rats as a treatment group and 30 as a control group were treated with the same dose of ATP and normal saline, respectively, lung tissues were isolated from rat and expression of rBD‑2 mRNA was assessed with reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) at 12, 24 and 36 h following treatment. Rats were divided into five groups: The control group treated with normal saline, the Pseudomonas aeruginosa (PA) infected group, group treated with ATP, group treated with cephalosporins, and the group treated with both ATP and cephalosporins. At 24 h following treatment, rat serum and lung tissues were collected for assessment of histological changes, and alterations to expression of the rBD‑2 protein by immunohistochemistry, expression of tumor necrosis factor (TNF)‑α and interleukin (IL)‑6 proteins by ELISA. RT‑qPCR results indicated that the expression of rBD‑2 mRNA was upregulated in response to ATP stimulation in lung tissues of rat, reaching its highest peak at 24 h. Immunohistochemistry demonstrated that ATP treatment enhanced the expression of rBD‑2 protein in rat lungs. Ceftazidime and ATP protected lungs from infection of PA and reduced the pathological damage of the lung. Overexpression of rBD‑2 by ATP led to decreased protein expression of TNF‑α and IL‑6 in lung tissues and serum. ATP upregulates the expression of rBD‑2 and serves an anti‑inflammatory role in the acute pneumonia of a rat model.

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