Giuseppe
Emeritus
Ethyl pyruvate reduces mortality in an endotoxin-induced severe acute lung injury mouse model (BMC, Abstract, edited)
Ethyl pyruvate reduces mortality in an endotoxin-induced severe acute lung injury mouse model
Guan-Hong Shang, Dian-Jie Lin, Wei Xiao, Chong-Qi Jia, Yu Li, Ai-Hua Wang, Liang Dong and Guan-Hong Shang
Respiratory Research 2009, 10:91
doi:10.1186/1465-9921-10-91
Published: 2 October 2009
Abstract (provisional)
Background
Ethyl pyruvate (EP) was recently identified as an experimental therapeutic agent in a wide variety of model systems for inflammation-mediated tissue and cellular injury.
Objective
To evaluate the effect of ethyl EP on improving the survival in mice with LPS-induced acute lung injury (ALI).
Methods
ALI was induced by administering lipopolysaccharide (LPS) intratracheally. The mice were treated intraperitoneally (i.p.) with 100, 50 and 10 mg/kg EP immediately before intratracheal instillation of LPS, and 100 mg/kg EP was administered 0, 12, 24 and 48 hours after induction of ALI. The mortality rate was recorded and analyzed by the Kaplan-Meier method. Serum tumor necrosis factor (TNF)-alpha, interleukin (IL) -6 and IL-1 beta were measured in bronchial alveolar lavage fluid using an enzyme-linked immunosorbent assay. High-mobility group box 1 levels were measured by Western immunoblotting.
Results
Treatment with EP significantly inhibited the release of HMGB1, TNF-alpha, IL-6 and IL-1beta into bronchoalveolar lavage (BAL) fluids of ALI mice, and reduced the permeability index of the injured lung. High EP doses reduced the mortality from ALI and the permeability index (100mg/kg and 50mg/kg EP versus control; P < 0.0001). Early administration of high-dose EP significantly increased survival rate (0, 12 and 24 h versus control; P < 0.0001, P <0.0001 and P = 0.01 respectively by log-rank test). There was no survival advantage when EP was initiated at 48 h.
Conclusions
Ethyl pyruvate improves survival and reduces the lung permeability index in mice with LPS-induced ALI.
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<cite cite="http://respiratory-research.com/content/10/1/91">Abstract | Ethyl pyruvate reduces mortality in an endotoxin-induced severe acute lung injury mouse model</cite>Guan-Hong Shang, Dian-Jie Lin, Wei Xiao, Chong-Qi Jia, Yu Li, Ai-Hua Wang, Liang Dong and Guan-Hong Shang
Respiratory Research 2009, 10:91
doi:10.1186/1465-9921-10-91
Published: 2 October 2009
Abstract (provisional)
Background
Ethyl pyruvate (EP) was recently identified as an experimental therapeutic agent in a wide variety of model systems for inflammation-mediated tissue and cellular injury.
Objective
To evaluate the effect of ethyl EP on improving the survival in mice with LPS-induced acute lung injury (ALI).
Methods
ALI was induced by administering lipopolysaccharide (LPS) intratracheally. The mice were treated intraperitoneally (i.p.) with 100, 50 and 10 mg/kg EP immediately before intratracheal instillation of LPS, and 100 mg/kg EP was administered 0, 12, 24 and 48 hours after induction of ALI. The mortality rate was recorded and analyzed by the Kaplan-Meier method. Serum tumor necrosis factor (TNF)-alpha, interleukin (IL) -6 and IL-1 beta were measured in bronchial alveolar lavage fluid using an enzyme-linked immunosorbent assay. High-mobility group box 1 levels were measured by Western immunoblotting.
Results
Treatment with EP significantly inhibited the release of HMGB1, TNF-alpha, IL-6 and IL-1beta into bronchoalveolar lavage (BAL) fluids of ALI mice, and reduced the permeability index of the injured lung. High EP doses reduced the mortality from ALI and the permeability index (100mg/kg and 50mg/kg EP versus control; P < 0.0001). Early administration of high-dose EP significantly increased survival rate (0, 12 and 24 h versus control; P < 0.0001, P <0.0001 and P = 0.01 respectively by log-rank test). There was no survival advantage when EP was initiated at 48 h.
Conclusions
Ethyl pyruvate improves survival and reduces the lung permeability index in mice with LPS-induced ALI.
-