Protective effects of 3-methyladenine on acute lung injury caused by multiple trauma in rats / 中国骨伤
China Journal of Orthopaedics and Traumatology
; (12): 350-353, 2015.
Article
在 Zh
| WPRIM
| ID: wpr-241041
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the role of autophagy in acute lung injury (ALI) caused by multiple trauma in rats via pretreat with 3-methyladenine (3-MA).</p><p><b>METHODS</b>Forty-five Sprague-Dawley male rats, with age of 4 months and body weight of 250-300 g,were randomly divided into three groups. In the sham group, the rats received sphenotresia only;in the control group, the rats were made model of femur shaft fracture combined with brain injury, and treated with physiological saline by abdominal cavity at 1 hour before making model; in the 3-MA group, the rats were made model of femur shaft fracture combined with brain injury,and treated with 3-MA of 10 mg/kg by abdominal cavity at 1 hour before making model. Histologic changes and the concentration of related inflammatory factors in the damaged lung tissue were examined at 48 h after opteration, at the same time, the effect of 3-MA on the expression of LC-3 II and Beclin-1 was examined through reverse transcriptase polymerase chain reaction technique (RT-PCR).</p><p><b>RESULTS</b>Compared with sham group, LC-3 II and Beclin-1 level in control group at 48 h after operation were obviously increased (P < 0.01). Compared with control group, LC-3 II and Beclin-1 level in 3-MA group at 48 h after operation were obviously decreased (P < 0.01). Compared with sham group, the level of proinflammatory cytokines (TNF-α and IL-6) in control group obviously enhanced (P < 0.01). Compared with control group, above items in 3-MA group was obviously lower (P < 0.01). Compared with control group,the histopathological damage of lung in 3-MA group obviously reduced (P < 0.01).</p><p><b>CONCLUSION</b>Autophagy can aggravate the acute lung injury caused by fracture of shaft of femur combined with brain injuries,but 3-MA can reduce tissue damage by inhibiting the autophagy and inflammatory response.</p>
全文:
1
索引:
WPRIM
主要主题:
Pathology
/
Multiple Trauma
/
Adenine
/
Chemistry
/
Interleukin-6
/
Tumor Necrosis Factor-alpha
/
Rats, Sprague-Dawley
/
Therapeutic Uses
/
Allergy and Immunology
/
Apoptosis Regulatory Proteins
研究类型:
Prognostic_studies
限制:
Animals
语言:
Zh
期刊:
China Journal of Orthopaedics and Traumatology
年:
2015
类型:
Article