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2017 ; 18
(9
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Polydeoxyribonucleotide Ameliorates Lipopolysaccharide-Induced Lung Injury by
Inhibiting Apoptotic Cell Death in Rats
#MMPMID28837114
An J
; Park SH
; Ko IG
; Jin JJ
; Hwang L
; Ji ES
; Kim SH
; Kim CJ
; Park SY
; Hwang JJ
; Choi CW
Int J Mol Sci
2017[Aug]; 18
(9
): ä PMID28837114
show ga
Lung injury is characterized by diffuse lung inflammation, alveolar-capillary
destruction, and alveolar flooding, resulting in respiratory failure.
Polydexyribonucleotide (PDRN) has an anti-inflammatory effect, decreasing
inflammatory cytokines, and suppressing apoptosis. Thus, we investigated its
efficacy in the treatment of lung injury, which was induced in rats using
lipopolysaccharide (LPS). Rats were randomly divided into three groups according
to sacrifice time, and each group split into control, lung injury-induced, and
lung injury-induced + PDRN-treated groups. Rats were sacrificed 24 h and 72 h
after PDRN administration, according to each group. Lung injury was induced by
intratracheal instillation of LPS (5 mg/kg) in 0.2 mL saline. Rats in
PDRN-treated groups received a single intraperitoneal injection of 0.3 mL
distilled water including PDRN (8 mg/kg), 1 h after lung injury induction.
Percentages of terminal deoxynucleotidyl transferase-mediated dUTP nick end
labeling (TUNEL)-positive, cleaved caspase-3-, -8-, and -9-positive cells, the
ratio of Bcl-2-associated X protein (Bax) to B-cell lymphoma 2 (Bcl-2), and
expressions of inflammatory cytokines (tumor necrosis factor-?, interleukin-6)
were decreased by PDRN treatment in the LPS-induced lung injury rats. Therefore,
treatment with PDRN reduced lung injury score. This anti-apoptotic effect of PDRN
can be ascribed to the enhancing effect of PDRN on adenosine A(2A) receptor
expression. Based on these results, PDRN might be considered as a new therapeutic
agent for the treatment of lung injury.