Renal tubular epithelial cells injury induced by mannitol and its potential mechanism
Administration of mannitol with high dose could induce extensive isometric renal proximal tubular vacuolization and acute renal failure in clinic. We previously demonstrated that mannitol-induced human kidney tubular epithelial cell (HK-2) injury. The objective of our present work was to further stu...
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doaj-beaf639b986a4cb5be5ca518c382c3032020-11-25T02:04:45ZengTaylor & Francis GroupRenal Failure0886-022X1525-60492018-10-01401859110.1080/0886022X.2017.14199731419973Renal tubular epithelial cells injury induced by mannitol and its potential mechanismJinwan Shi0Jiuzhan Qian1Hui Li2Hongjun Luo3Wenhong Luo4Zhexuan Lin5Shantou University Medical CollegeShantou University Medical CollegeShantou University Medical CollegeShantou University Medical CollegeShantou University Medical CollegeShantou University Medical CollegeAdministration of mannitol with high dose could induce extensive isometric renal proximal tubular vacuolization and acute renal failure in clinic. We previously demonstrated that mannitol-induced human kidney tubular epithelial cell (HK-2) injury. The objective of our present work was to further study the cytotoxicity of mannitol in HK-2 cells and its potential mechanism. Cell viability was assessed by an MTT method. Cell morphological changes were observed. Furthermore, levels of malondialdehyde (MDA) and glutathione (GSH) were measured. Flow cytometry was performed to determine cell apoptosis by using Annexin V-FITC and PI. In addition, the F-actin of cells was labeled by FITC-Phalloidin for observation of cytoskeleton. The MTT assay displayed that the cell viability decreased significantly in a dose- and time-dependent manner. The morphological changes were observed, including cell membrane rapture and cell detachment. The GSH concentration in HK-2 cells decreased dramatically in mannitol treatment group, while MDA content increased significantly. The results of flow cytometry indicated that apoptotic percentages of HK-2 cells increased in 250 mmol/L mannitol treatment group. After treatment with 250 mmol/L mannitol for 48 h, HK-2 cells showed disorganization of cytoskeleton and even exhibited a totally destroyed cytoskeleton. Therefore, high dose of mannitol has a toxic effect on renal tubular epithelial cells, which might be attributed to oxidative stress, destroyed cellular cytoskeleton and subsequent cell apoptosis.http://dx.doi.org/10.1080/0886022X.2017.1419973Cell apoptosiscytoskeletoncytotoxicityHK-2 cellmannitoloxidative stress |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jinwan Shi Jiuzhan Qian Hui Li Hongjun Luo Wenhong Luo Zhexuan Lin |
spellingShingle |
Jinwan Shi Jiuzhan Qian Hui Li Hongjun Luo Wenhong Luo Zhexuan Lin Renal tubular epithelial cells injury induced by mannitol and its potential mechanism Renal Failure Cell apoptosis cytoskeleton cytotoxicity HK-2 cell mannitol oxidative stress |
author_facet |
Jinwan Shi Jiuzhan Qian Hui Li Hongjun Luo Wenhong Luo Zhexuan Lin |
author_sort |
Jinwan Shi |
title |
Renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
title_short |
Renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
title_full |
Renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
title_fullStr |
Renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
title_full_unstemmed |
Renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
title_sort |
renal tubular epithelial cells injury induced by mannitol and its potential mechanism |
publisher |
Taylor & Francis Group |
series |
Renal Failure |
issn |
0886-022X 1525-6049 |
publishDate |
2018-10-01 |
description |
Administration of mannitol with high dose could induce extensive isometric renal proximal tubular vacuolization and acute renal failure in clinic. We previously demonstrated that mannitol-induced human kidney tubular epithelial cell (HK-2) injury. The objective of our present work was to further study the cytotoxicity of mannitol in HK-2 cells and its potential mechanism. Cell viability was assessed by an MTT method. Cell morphological changes were observed. Furthermore, levels of malondialdehyde (MDA) and glutathione (GSH) were measured. Flow cytometry was performed to determine cell apoptosis by using Annexin V-FITC and PI. In addition, the F-actin of cells was labeled by FITC-Phalloidin for observation of cytoskeleton. The MTT assay displayed that the cell viability decreased significantly in a dose- and time-dependent manner. The morphological changes were observed, including cell membrane rapture and cell detachment. The GSH concentration in HK-2 cells decreased dramatically in mannitol treatment group, while MDA content increased significantly. The results of flow cytometry indicated that apoptotic percentages of HK-2 cells increased in 250 mmol/L mannitol treatment group. After treatment with 250 mmol/L mannitol for 48 h, HK-2 cells showed disorganization of cytoskeleton and even exhibited a totally destroyed cytoskeleton. Therefore, high dose of mannitol has a toxic effect on renal tubular epithelial cells, which might be attributed to oxidative stress, destroyed cellular cytoskeleton and subsequent cell apoptosis. |
topic |
Cell apoptosis cytoskeleton cytotoxicity HK-2 cell mannitol oxidative stress |
url |
http://dx.doi.org/10.1080/0886022X.2017.1419973 |
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