Early administration of propofol protects against endotoxin-induced acute lung injury in rats by inhibiting the TGF-beta1-Smad2 dependent pathway.

Inflammation Research : Official Journal of the European Histamine Research Society ... [et Al.]
Ju GaoNing Ding

Abstract

To assess the effects of propofol treatments at different time points on acute lung injury and on the expression of transforming growth factor (TGF)-beta1 and the downstream target of TGF-beta1, Smad 2, in the lung tissues in the endotoxic rats. Seventy-six Wistar rats were randomly assigned to five groups: control group (saline only), endotoxemic group [lipopolysaccharide (LPS) 8 mg kg(-1), i.v.], and three propofol-treated groups. For the propofol-treated groups, propofol (5 mg kg(-1), i.v. bolus) was administered either 1 h before LPS, simultaneously with LPS, and 1 h after LPS, and all were followed by infusion of 10 mg kg(-1) h(-1) of propofol for 5 h after LPS. Lung tissues were sampled to measure myeloperoxidase activity and expression of TGF-beta1 and Smad2 and to assess pulmonary microvascular permeability and histopathological changes. The hemodynamics, arterial blood gases, 5 h survival rate, pulmonary microvascular permeability, and acute lung injury scores were significantly better, and expression of TGF-beta1 and Smad2 and myeloperoxidase activity in lung tissues was significantly lower in the pretreatment and simultaneous treatment groups compared to the endotoxemic group. However, there were no significant diffe...Continue Reading

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Citations

Mar 27, 2012·American Journal of Respiratory Cell and Molecular Biology·George D LeikaufJames P Fabisiak
Apr 24, 2013·Journal of Cardiothoracic Surgery·Xianfeng QuDongguo Wang
Apr 22, 2014·International Immunopharmacology·Seyhan Erisir OygucuNihal Oygur

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