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.
Artigo
em Chinês
| WPRIM
| ID: wpr-241041
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>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Traumatismo Múltiplo
/
Adenina
/
Química
/
Interleucina-6
/
Fator de Necrose Tumoral alfa
/
Ratos Sprague-Dawley
/
Usos Terapêuticos
/
Alergia e Imunologia
/
Proteínas Reguladoras de Apoptose
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Chinês
Revista:
China Journal of Orthopaedics and Traumatology
Ano de publicação:
2015
Tipo de documento:
Artigo
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