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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (2): 153-157.

• 研究原著 • 上一篇    下一篇

肺泡巨噬细胞 ADAR1 基因在急性肺损伤中表达的变化

吴玉梅, 马雪, 熊晓云, 孟静茹, 胡静, 李明凯, 罗晓星   

  1. 第四军医大学药学系药理教研室, 西安 710032, 陕西
  • 收稿日期:2005-10-20 修回日期:2005-12-01 出版日期:2006-02-06 发布日期:2020-10-26
  • 通讯作者: 罗晓星, 通讯作者, 男, 教授, 博士生导师, 研究方向:分子药理及心血 管药理。 Tel:029-84774591 Email:xxluo3@fmmu.edu.cn E-mail:xxluo3@fmmu.edu.cn
  • 作者简介:吴玉梅, 女, 讲师, 博士研究生, 现主要从事炎症中 RNA 编辑工作的 研究。 E-mail:yumeiwu1305@126.com 罗晓星, 通讯作者, 男, 教授, 博士生导师, 研究方向:分子药理及心血 管药理。 Tel:029-84774591 Email:xxluo3@fmmu.edu.cn
  • 基金资助:
    国家自然科学基金资助( №30370625)

Expression change of ADAR1 gene of alveolar macrophages in acute lung injury

WU Yu-mei, MA-Xue, XIONG Xiao-yun, MENG Jing-ru, HU-Jing, LI Ming-kai, LUO Xiao-xing   

  1. Department of Pharmacology , School of Pharmacy, Fourth Military Medical University, Xi' an 710032, Shaanxi, China
  • Received:2005-10-20 Revised:2005-12-01 Online:2006-02-06 Published:2020-10-26

摘要: 目的 :观察肺泡巨噬细胞( alveolar macrophag- es, AMs) RNA 腺苷脱氨酶1( adenosine deaminase act- ing on RNA, ADAR1) 基因( ADAR1 基因) 在急性肺损 伤中的变化, 探讨该基因在急性肺损伤病理变化中 可能发挥的作用 。方法:采用气管内滴注脂多糖( li- popolysaccharides, LPS) 的方法制备急性肺损伤模型, 经瑞氏染色计数急性肺损伤大鼠肺泡灌洗液中 AMs 、中 性 粒 细 胞 ( polymorphonuclear leukocytes, PMNs) 并计算各自所占比例;以 RT -PCR 方法观察 ADAR1 基因在急性肺损伤中表达的变化。结果:气 管内滴注脂多糖( 2 .5 mg·kg -1 ) 成功制备的急性肺 损伤模型中, 肺泡灌洗液中细胞总数随时间变化而 变化, 由对照组的 1 .74 ×106 增加至炎症反应 6 h 时 17 .13 ×106 , 9 h 时 17 .00 ×106 。AMs 所占细胞总数 的比例则由98 %下降为 21 %, 而其绝对数量随时间 的推移不断的上升, 尤其以 6 h 和 9 h 为著。ADAR1 基因在急性肺损伤肺泡巨噬细胞中呈现时间依赖性 的升高 。结论:内毒素诱导的急性肺损伤模型中, AMs 绝对数量显著上升, 且其中 ADAR1 基因表达呈 时间依赖性的升高, 提示ADAR1 基因可能在急性肺 损伤发病过程及病理发展中发挥了重要的作用。

关键词: 急性肺损伤 , 肺泡巨噬细胞, 脂多糖, 肺泡 灌洗液, ADAR1 基因

Abstract: AIM :To observe the expression change of ADAR1 gene of alveolar macrophages( AMs) in acute lung injury( ALI) and what role ADAR1 gene maybe play in the disease .METHODS:The ALI model was induced by intratracheal administration of LPS and bronchoalveolar lavage fluid cells were counted by hemacytometer .For the differential cell count, the cells in BALF, which centri- fuged to glass slides using cytospin cartridge were stained with a modified Wright/Giemsa stain and the percent of AMs was got ;at the same time, RT-PCR was carried out to measure the expression change of adar1 gene in the ALI models .RESULTS:The total cell count in BAL, which collected from successfully induced ALI models by intra- tracheal administration of LPS at the dose of 2 .5 mg·kg -1 increased sharply , from 1 .74 ×106 in control group to the peak 17 .13 ×106 , 1 .70 ×106 at 6 h and 9 h respectively as ALI developed after IT LPS ;The absolute count of AMs increased especially at 6 h to 9 h after IT LPS, while the percent of AMs decreased from nearly 98 %in sham group to 21 % in ALI model group .The expression of ADAR1 gene increased time-dependently, especially at 6 h and 9 h of ALI.CONCLUSION:The absolute count of AMs increases significantly in ALI model and ADAR1 gene of AMs expression also increases .ADAR1 gene of AMs may play a very important role in ALI .

Key words: acute lung injury , alveolar macrophag- es , lipopolysaccharides , bronchoalveolar lavage fluid , ADAR1 gene

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