急性肺水肿大鼠肺组织中IL-6,SOD和MDA变化的实验研究
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Study on SOD,MDA and IL-6 in lung tissue of rats with acute pulmonary edema
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    摘要:

    目的:探讨急性缺氧致大鼠急性肺水肿模型肺组织中丙二醛(Malondialdehyde,MDA)、超氧化物歧化酶(Superoxide dismutase,SOD)和白细胞介素-6(Interleukin 6,IL-6)的变化,并探讨其病理生理学意义。方法:成年Wistar大鼠48只,体质量(200?0)g,随机分为A组(正常组)、B组(急性肺水肿模型,缺氧24h)、C组(急性肺水肿模型,缺氧48h),D组(急性肺水肿模型,缺氧72h),对B,C,D组大鼠腹腔内注射6%氯化氨建立急性肺水肿模型,造模成功后的24 h,48 h,72 h,分别处死B,C,D组大鼠,分离大鼠血浆,摘取大鼠肺脏,制备10%肺组织匀浆,用ELISA检测肺组织中MDA、SOD,IL-6和血浆中IL-6的含量和活性。结果:B,C,D三组可见大鼠肺组织水肿明显,湿重明显增加,与A组相比,有统计学意义(P=0.046,0.021,0.009)。A组大鼠肺组织无明显充血水肿,肺组织形态大致正常。B,C,D大鼠模型肺组织充血水肿,肺组织间质间隙、肺泡和细支气管内充满含有蛋白质的液体,肺泡内有透明膜形成。且D组大鼠肺组织充血水肿最为明显。B组与A组比较,肺组织中MDA,IL-6升高、SOD降低,但差异无统计学意义(P>0.05),随着肺水肿时间的延长,C,D组大鼠肺组织中MDA、IL-6和SOD和A组相比变化明显,差异有统计学意义(P>0.05)。B,C,D组大鼠血浆中的IL-6和A组相比明显升高,差异有统计学意义(P>0.05)。结论:急性肺水肿的发生和氧化应激有关,机体抗氧化能力降低、自由基增加是肺水肿发生的重要机制,肺组织中IL-6,SOD和MDA含量对病情变化有指导意义。

    Abstract:

    Objective: To investigate the Interleukin 6(IL-6),superoxide dismutase(SOD)and malondialdehyde (MDA) in lung tissue of acute pulmonary edema in rat model induced by acute hypoxia,and to investigate its pathophysiological significance. Methods: 48 adult Wistar rats,body weight (200?0) g,were randomly divided into group A (normal group),group B (model of acute pulmonary edema,hypoxia for 24h),group C (model of acute pulmonary edema,hypoxia for 48h),group D(model of acute pulmonary edema,hypoxia for 72h) .Establish the model of acute pulmonary edema in group B,C,D rats by intraperitoneal injection of 6% ammonium chloride,after the success of the modeling of 24 hours,48 hours,72 hours,were B,C,the rats of group D,isolated from rat plasma,removal of rat lung,the preparation of 10% lung homogenate,MDA,SOD,IL-6 and IL-6 activity in lung tissue.and plasma.were detected by ELISA content. Results: Group B,C,D were significantly increased in lung tissue and wet weight,wet weight was significantly increased,compared with the A group (P=0.046,0.021,0.009).The lung tissue of A group had no obvious congestion and edema,and the morphology of lung tissue was normal.Pulmonary edema,interstitial spaces,alveolar and thin bronchial fluid filled with proteins in group B,C,D,and the alveolar membrane was formed by a transparent membrane.The lung tissue congestion and edema in group D were the most obvious.Group B compared with group A,lung tissue MDA,IL-6 increased and SOD decreased,but the difference was not statistically significant (P>0.05),with the extended time of pulmonary edema in group C and D,in the lung tissues of rats with MDA,IL-6 and SOD and A group compared to change significantly,the difference was statistically significant (P>0.05). B,C,D group of IL-6 in rat plasma and compared with the group A increased obviously,the difference was statistically significant (P>0.05). Conclusion: the incidence of acute pulmonary edema and oxidative stress related,decrease antioxidant capacity of organism,increased free radical is an important mechanism of pulmonary edema,SOD,MDA and IL-6 in the lung tissue have the guiding content on the changes of disease.

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王娟.急性肺水肿大鼠肺组织中IL-6,SOD和MDA变化的实验研究[J].中国比较医学杂志,,().

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  • 收稿日期:2016-01-25
  • 最后修改日期:2016-06-01
  • 录用日期:2016-06-01
  • 在线发布日期: 2016-11-28
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