Effects of penehyclidine hydrochloride on activities of NF-κB and AP-1 during actue lung injury induced by blunt chest trauma-hemorrhagic shock and resuscitation in rats
10.3760/cma.j.issn.0254-1416.2015.06.029
- VernacularTitle:盐酸戊乙奎醚对胸部创伤-失血性休克复苏致大鼠急性肺损伤时NF-κB和AP-1活性的影响
- Author:
Xiaojing WU
;
Yan LENG
;
Wenwei GAO
;
Bo ZHAO
;
Rui XUE
;
Liying ZHAN
;
Zhongyuan XIA
- Publication Type:Journal Article
- Keywords:
NF-κappa B;
Transcription factor AP-1;
Cholinergic antagonists;
Thoracic injury;
Shock,hemorrhagic;
Respiratory distress syndrome,adult
- From:
Chinese Journal of Anesthesiology
2015;35(6):751-754
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of penehyclidine hydrochloride on activities of nuclear factor kappa B (NF-kB) and activator protein-1 (AP-1) during actue lung injury induced by blunt chest trauma-hemorrhagic shock and resuscitation (HSR) in rats.Methods Thirty male Sprague-Dawley rats,aged 8 weeks,weighing 250-300 g,were randomly assigned into 3 equal groups (n =10 each) using a random number table:sham operation group (group S),blunt chest trauma-HSR group (group THSR) and penehyclidine hydrochloride group (group PHCD).The model of actue lung injury induced by blunt chest trauma-HSR was induced by dropping a 300 g weight onto a precordium in anesthetized rats.Blood was withdrawn via the femoral artery 5 min later until MAP was decreased to 35-45 mmHg within 15 min and maintained at this level for 60 min,followed by resuscitation.In PHCD group,PHCD 2 mg/kg was injected intravenously at 60 min after hemorrhagic shock.At 6 h after the model was established,blood samples were obtained for measurement of concentrations of tumor necrosis factor-alpha (TNF-α) in serum.The lungs were then removed for determination of lung water content,myeloperoxidase (MPO) activaty (by colorimetric assay),NF-κB and AP-1 activaties (using electrophoretic mobility shift assay) in lung tissues,and for microscopic examination of pathologic changes (under light microscope).The left lung was lavaged,and lung permeability index (LPI) was calculated.Results Compared with S group,lung water content,LPI,serum TNF-α level and activites of MPO,NF-κB and AP-1 were significantly increased in THSR and PHCD groups.Compared with THSR group,lung water content,LPI,serum TNF-α concentrations and activites of MPO,NF-κB and AP-1 were significantly decreased in PHCD group.The pathological damage to lung tissues was significantly reduced in PHCD group as compared with THSR group.Conclusion PHCD can inhibit activities of NF-κB and AP-1 in lung tissues,thus mitigating acute lung injury induced by blunt chest trauma-HSR in rats.
