Burn-blast combined injury and important organ injury in rats induced by explosion in closed pipe: an observation study

Changmei WENG; Guangming YANG; Shuangbo ZHANG; Yingguo ZHU; Xiangyun CHENG; Zhaoxia DUAN; Jianyi KANG; Jianmin WANG

doi:10.16016/j.2097-0927.202309061

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Burn-blast combined injury and important organ injury in rats induced by explosion in closed pipe: an observation study

Military Medicine | 更新时间：2026-01-09

- Burn-blast combined injury and important organ injury in rats induced by explosion in closed pipe: an observation study
- Journal of Army Medical University Vol. 46, Issue 12, Pages: 1323-1335(2024)
- 作者机构：
  
  400042 重庆，陆军军医大学(第三军医大学)大坪医院：武器杀伤生物效应评估研究室，创伤与化学中毒全国重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16016/j.2097-0927.202309061
  CLC： R563;R642;R644
- Received：12 September 2023，
  
  Revised：2023-11-07，
  
  Published：30 June 2024
- 稿件说明：
移动端阅览
Changmei WENG, Guangming YANG, Shuangbo ZHANG, et al. Burn-blast combined injury and important organ injury in rats induced by explosion in closed pipe: an observation study[J]. Journal of Army Medical University, 2024, 46(12): 1323-1335.
DOI：

Changmei WENG, Guangming YANG, Shuangbo ZHANG, et al. Burn-blast combined injury and important organ injury in rats induced by explosion in closed pipe: an observation study[J]. Journal of Army Medical University, 2024, 46(12): 1323-1335. DOI： 10.16016/j.2097-0927.202309061.

摘要

目的

采用密闭管道内气体爆炸方式，建立热辐射与冲击波复合致伤模型，探讨爆炸烧冲复合因素致大鼠重要器官伤情特点。

方法

8~10周龄雄性SD大鼠72只，体质量(200±10)g，随机分为对照组、轻度组、重度组。采用爆炸冲击波与热辐射致伤系统致大鼠不同程度损伤，并进行物理参数测试，伤后存活大鼠进行呼吸功能检测，24 h后解剖并检测血气、血液生化及血清炎症因子、肺损伤相关蛋白等指标，并观察肺组织及气管病理学形态变化情况。

结果

爆炸冲击波超压峰值范围为209~493 kPa，温度为152~258 ℃；轻度组死亡率为8.3%，重度组死亡率为53.1%；与对照组比较，伤后6 h内大鼠吸气时间(inspiratory time，Ti)、潮气量(Tidal Volume，TV)、松弛时间(relaxation time，Tr)增高(

0.05)，呼吸频率(respiratory rate，f)降低(

0.05)；伤后24 h二氧化碳分压(PaCO

)、碱剩余值(BE)、碳酸氢根(HCO

)值显著增高(

0.05)，氧分压(PaO

)显著降低(

0.05)；血清丙氨酸转氨酶(alanine transaminase，ALT)、天冬氨酸氨基转氨酶(aspartate aminotransferase，AST)、碱性磷酸酶(alkaline phosphatase，ALP)、总胆红素(total bilirubin，TBI)、总胆汁酸(total bile acid，TBA)水平均显著增高(

0.05)，白细胞介素-1β(interleukin-1β，IL-1β)、肿瘤坏死因子-α(tumor necrosis factor-α，TNF-α)、IL-6水平均显著增高(

0.01)；伤后大鼠气管黏膜层有不同程度的出血灶及发炎；肺损伤发生率高且病理表现为点片状出血至整肺叶弥漫性出血，肺泡间隔断裂，间隔增厚，红细胞及炎性细胞浸润，血清肺损伤相关蛋白水平显著增高(

0.05)。

结论

建立出高度模拟密闭管道内轻至重度爆炸烧冲复合伤、能够满足研究需要的大鼠模型；爆炸烧冲复合伤以肺损伤、呼吸功能障碍、肝脏损伤及继发性感染为主。

Abstract

Objective

To establish a model of combined injury of thermal radiation and blast wave of gas explosion in closed pipeline

and investigate the characteristics of important organ injury induced by burn-blast combined injury in rats.

Methods

A total of 72 male SD rats (aged 8~10 weeks

weighing 200~10 g) were randomly divided into control group and mild and severe injured groups. After the model rats were inflicted with blast wave and thermal radiation

their physical parameters were detected and measured. The respiratory function of the survival rats was tested. In 24 h later

arterial blood gas analysis

blood biochemical tests

and detection for serum inflammatory factors and lung injury related protein levels were performed

and the pathological changes in the lung tissue and trachea were observed.

Results

The peak range of explosive blast wave overpressure was 209~493 kPa

and the temperature was 152~258 ℃. The mortality rate was 8.3% in the mild group and 53.1% in the severe group. Compared with the control group

longer inspiratory time (Ti) and relaxation time (Tr) and larger tidal volume (TV)(

0.05)

while lower respiratory frequency (f) were observed in the 2 injured groups within 6 h after injury (

0.05). At 24 h after injury

the values of partial pressure of carbon dioxide (PaCO

)

residual base value (BE) and bicarbonate (HCO

) were increased significantly (

0.05)

while partial pressure of oxygen (PaO

) was decreased (

0.05). The serum levels of alanine transaminase (ALT)

aspartate aminotransferase (AST)

alkaline phosphatase (ALP)

total bilirubin (TBI) and total bile acid (TBA) were notably elevated (

0.05). So were the levels of IL-1 β

TNF-α and IL-6 (

0.01). Various severities of hyperemia foci and inflammation in the tracheal mucosa were observed in the injured rats. The incidence of lung injury was high

and the pathological manifestations were dot-shaped hemorrhage to diffuse hemorrhage of the whole lobe

rupture of a

lveolar septum

thickening of septum

and infiltration of red blood cells and inflammatory cells. The levels of serum lung injury-related proteins were significantly increased (

0.05).

Conclusion

A rat model which can highly simulate mild to severe burn-blast combined injury is constructed

which can meet the needs for rat model in study of explosive burn-blast compound injury. The main characteristics of the injury are lung injury

respiratory dysfunction

liver damage and secondary infection.

关键词

Keywords

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