Effects of chronic hypobaric hypoxia on HIF-1ɑ amd COX1 proteins as well as oxidative stress in lung tissue of rats
- VernacularTitle:慢性低压低氧对大鼠肺组织HIF-1ɑ、COX1蛋白及氧化应激反应的影响
- Author:
long Sheng MA
1
;
Sheng LI
;
na Xiao LI
;
xia Guo MI
;
en Guo JIN
;
hua Sheng LI
Author Information
1. 青海省心脑血管病专科医院 心内科
- Keywords:
high altitude;
hypobaric hypoxia;
oxidative stress;
lung tissue;
COX1
- From:
Basic & Clinical Medicine
2017;37(10):1355-1358
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of chronic hypobaric hypoxia on COX1 protein and oxidative stress in lung tissue. Methods Rats were randomly divided into normoxia group (1 500 m)and hypoxia group (4 300 m). The rats in hypoxia group were sampled after exposure to hypoxia for 30 days. The COX1 protein in lung tissue of rats was determined by Western blot method; HIF-1αlevel in lung tissue and serum, ROS in plas-ma and SOD, CAT enzyme in lung tissue were determined by ELISA method; PAP of rats were determined by physiological signal acquisition system. Results HIF-1 protein express in serum and lung tissue of rats in hypoxia group was significantly higher than that of the normoxia group (P<0.01), the content of ROS was significantly lower than that of the normoxia group (P<0.01), the expression of COX1 protein in lung tissues of hypoxia group was significantly decreased(P<0.01),serum total antioxidant capacity was elevated in hypoxia group(P<0.01).Conclusions The effects of chronic hypobaric hypoxia on lung tissue may be caused by direct injury, not only by oxidative stress.
