急性冷暴露对大鼠肺组织中水通道蛋白AQP-1和AQP-5表达的影响

doi:10.13459/j.cnki.cjap.2016.03.012

中国应用生理学杂志 ›› 2016, Vol. 32 ›› Issue (3): 234-237.doi: 10.13459/j.cnki.cjap.2016.03.012

急性冷暴露对大鼠肺组织中水通道蛋白AQP-1和AQP-5表达的影响

林阳生¹, 张莉¹, 杨华², 张莹¹, 李曦¹, 张永强¹, 杨丹凤¹

1. 军事医学科学院卫生学环境医学研究所, 天津 30050;
2. 解放军第222医院, 吉林 132000

收稿日期:2015-12-21 修回日期:2016-02-15 出版日期:2016-05-28 发布日期:2018-06-12
通讯作者: 杨丹凤,Tel:022-84655058;E-mail:fengdyd@126.com E-mail:fengdyd@126.com
基金资助:
杨丹凤,Tel:022-84655058;E-mail:fengdyd@126.com

Effects of acute cold exposure on the expression of AQP-1 and AQP-5 in rat lung tissues

LIN Yang-sheng¹, ZHANG Li¹, YANG Hua², ZHANG Ying¹, LI Xi¹, ZHANG Yong-qiang¹, YANG Dan-feng¹

1. Institute of Health and Environmental Medicine,Academy of Military Medical Sciences, Tianjin 300050;
2. The 222^th Hospital of Chinese People's Liberary Army, Jilin 132000, China

Received:2015-12-21 Revised:2016-02-15 Online:2016-05-28 Published:2018-06-12
Contact: 杨丹凤,Tel:022-84655058;E-mail:fengdyd@126.com E-mail:fengdyd@126.com
Supported by:
杨丹凤,Tel:022-84655058;E-mail:fengdyd@126.com

摘要/Abstract

摘要： 目的：探讨急性冷暴露后肺组织超微结构变化以及对水通道蛋白-1（AQP-1）和AQP-5表达的影响。方法：12只健康雄性Wistar大鼠随机分为室温（23℃±2℃）对照组和-25℃ 2 h冷暴露组（n=6）；记录冷暴露后大鼠直肠温度；透射电镜观察肺组织超微结构改变；RT-PCR法和Western blot法测定大鼠肺组织AQP-1和AQP-5基因和蛋白的表达水平。结果：急性冷暴露后大鼠的体心温度与对照组相比，明显降低（P<0.05）；肺组织超微结构亦发生改变，基底膜明显增厚，肺泡I上皮细胞（AT-I）核固缩，肺泡Ⅱ上皮细胞（AT-Ⅱ）胞浆空泡化增多；冷暴露后大鼠肺组织AQP-1的基因和蛋白表达未见明显变化，AQP-5的基因和蛋白表达均显著降低（P<0.05）。结论：急性冷暴露肺组织AQP-5基因和蛋白表达降低与寒冷暴露引发肺组织结构损伤可能存在一定因果关系。

关键词: 急性冷暴露, 肺, 水通道蛋白, 大鼠

Abstract: Objective:To study the effect of acute cold exposure on the expression of aquaporin-1 (AQP-1) and AQP-5 in lung tissues and the changes of ultrastructural pathological changes after cold exposure in rats. Methods:Twelve male Wistar rats were randomly divided into control group (23±2)℃ and cold (-25℃) exposure group, the exposure time was 2 h. Rectal temperatures of the rats were measured immediately after cold exposure. The ultrastructural pathological changes of pulmonary tissue were observed by transmission electronic microscope. The mRNA expression of AQP-1 and AQP-5 was measured by RT-PCR. The protein expression of AQP-1 and AQP-5 was measured by Western blot. Results:The body core temperatures(28.07±4.15)℃ of the cold exposure group were decreased significantly compared with the control group(37.33±0.25)℃ (P<0.05). In acute cold exposure group, the main pathological changes of pulmonary ulstructure included pulmoary epithelial basement membrane thickening, and karyopyknosis of AT-I cells, and vacuolization on the cytoplasm of (AT-Ⅱ) cells. After acute cold exposure, the levels of both mRNA and potein expressions of AQP-5 were decreased significantly (P<0.05) compared with those in the control group. while AQP-1 expression level showed no statistical significance between control group and cold exposure group. Conclusion:There might be some cause and effect relationship between lung tissue damage by cold exposure and the levels of mRNA and potein expressions of AQP-5 decreased after acute cold exposure.

Key words: acute cold exposure, lung, aquaporin, rat

林阳生, 张莉, 杨华, 张莹, 李曦, 张永强, 杨丹凤. 急性冷暴露对大鼠肺组织中水通道蛋白AQP-1和AQP-5表达的影响[J]. 中国应用生理学杂志, 2016, 32(3): 234-237.

LIN Yang-sheng, ZHANG Li, YANG Hua, ZHANG Ying, LI Xi, ZHANG Yong-qiang, YANG Dan-feng. Effects of acute cold exposure on the expression of AQP-1 and AQP-5 in rat lung tissues[J]. CJAP, 2016, 32(3): 234-237.

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急性冷暴露对大鼠肺组织中水通道蛋白AQP-1和AQP-5表达的影响

Effects of acute cold exposure on the expression of AQP-1 and AQP-5 in rat lung tissues

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