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[Effect of chronic intermittent hypoxia on the expression of CXC chemokine ligand-10 in rat liver and the interventional effect of N-acetylcysteine].
Zhong Nan da Xue Xue Bao. Yi Xue Ban = Journal of Central South University. Medical Sciences 2016 August
OBJECTIVE: To explore the effect of chronic intermittent hypoxia (CIH) on liver injury and to examine the expression of liver CXC chemokine ligand-10 (CXCL10) in the rats, and to explore the effect of N-acetylcysteine (NAC).
METHODS: A total of 21 male SD rats were randomly divided into a control group, a CIH group and a CIH+NAC group (n=7 in each group). The control group exposed to normal gaseous environment, the other 2 groups were exposed to CIH for 5 weeks (8 h/d); the control group and the CIH group were given daily saline lavage, the CIH+NAC group daily received NAC solution. After the end of 5 weeks, the rats were killed, and the MDA content and SOD activity in rat liver tissues were detected. The liver sections were stained with hematoxylin-eosin (HE) and the liver pathology was observed. The expression of CXCL10 in the liver tissues was detected by immunohistochemical method.
RESULTS: Compared with the control group, the MDA levels in rat liver tissues were increased (P<0.05), and the SOD levels were decreased (P<0.05) in the CIH group and the CIH+NAC group. Compared with the CIH group, the SOD levels in the rat liver tissues were increased (P<0.05), and the MDA levels were decreased in the CIH+NAC group. Compared with the control group, the hepatic steatosis and inflammatory reactions were more severe in the CIH group and the CIH+NAC group (both P<0.01). Compared with the CIH group, the hepatic steatosis and inflammatory reactions were reduced in the CIH+NAC group (P<0.05). The liver damage in the CIH+NAC group was less than that in the CIH group (P<0.05). Compared with the control group, the CXCL10 expression in the CIH group and the CIH+NAC group was increased (both P<0.01). The CXCL10 expression in the CIH+NAC group was down-regulated compared with that in the CIH group (P<0.01).
CONCLUSION: CIH can lead to liver injury and induce CXCL10 expression in rat liver tissues. The NAC can alleviate rat liver oxidative stress and inflammation caused by CIH, and in turn to improve the liver injury in rats.
METHODS: A total of 21 male SD rats were randomly divided into a control group, a CIH group and a CIH+NAC group (n=7 in each group). The control group exposed to normal gaseous environment, the other 2 groups were exposed to CIH for 5 weeks (8 h/d); the control group and the CIH group were given daily saline lavage, the CIH+NAC group daily received NAC solution. After the end of 5 weeks, the rats were killed, and the MDA content and SOD activity in rat liver tissues were detected. The liver sections were stained with hematoxylin-eosin (HE) and the liver pathology was observed. The expression of CXCL10 in the liver tissues was detected by immunohistochemical method.
RESULTS: Compared with the control group, the MDA levels in rat liver tissues were increased (P<0.05), and the SOD levels were decreased (P<0.05) in the CIH group and the CIH+NAC group. Compared with the CIH group, the SOD levels in the rat liver tissues were increased (P<0.05), and the MDA levels were decreased in the CIH+NAC group. Compared with the control group, the hepatic steatosis and inflammatory reactions were more severe in the CIH group and the CIH+NAC group (both P<0.01). Compared with the CIH group, the hepatic steatosis and inflammatory reactions were reduced in the CIH+NAC group (P<0.05). The liver damage in the CIH+NAC group was less than that in the CIH group (P<0.05). Compared with the control group, the CXCL10 expression in the CIH group and the CIH+NAC group was increased (both P<0.01). The CXCL10 expression in the CIH+NAC group was down-regulated compared with that in the CIH group (P<0.01).
CONCLUSION: CIH can lead to liver injury and induce CXCL10 expression in rat liver tissues. The NAC can alleviate rat liver oxidative stress and inflammation caused by CIH, and in turn to improve the liver injury in rats.
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