Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury

Abstract Post contrast-acute kidney injury (PC-AKI) is defined as the deterioration of renal function after administration of iodinated contrast media. HMGB1 is known to play an important role in the development of acute kidney injury. The purpose of this study was to investigate the association bet...

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Autores principales: Hyewon Oh, Arom Choi, Nieun Seo, Joon Seok Lim, Je Sung You, Yong Eun Chung
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Publicado: Nature Portfolio 2021
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spelling oai:doaj.org-article:d3b8a592b6d846bbb0cb4068c4dd68492021-12-02T16:35:36ZProtective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury10.1038/s41598-021-94928-52045-2322https://doaj.org/article/d3b8a592b6d846bbb0cb4068c4dd68492021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94928-5https://doaj.org/toc/2045-2322Abstract Post contrast-acute kidney injury (PC-AKI) is defined as the deterioration of renal function after administration of iodinated contrast media. HMGB1 is known to play an important role in the development of acute kidney injury. The purpose of this study was to investigate the association between HMGB1 and PC-AKI and the protective effect of glycyrrhizin, a direct inhibitor of HMGB1, in rats. Rats were divided into three groups: control, PC-AKI and PC-AKI with glycyrrhizin. Oxidative stress was measured with MDA levels and H2DCFDA fluorescence intensity. The mRNA expressions of pro-inflammatory cytokines (IL-1α, IL-1β, IL-6 and TNF-α) and kidney injury markers (KIM-1, NGAL and IL-18) were assessed using RT-PCR and ELISA in kidney tissue. In addition, the serum and intracellular protein levels of HMGB1were analyzed with the enzyme-linked immunosorbent assay (ELISA) and western blotting. Histologic changes were assessed with H&E staining using the transmission electron microscope (TEM). Moreover, serum creatinine (SCr), blood urea nitrogen (BUN) and lactate dehydrogenase (LDH) levels were assessed. Oxidative stress, pro-inflammatory cytokines, kidney injury markers and LDH were significantly higher in PC-AKI compared to the controls, but were lower in PC-AKI with glycyrrhizin. Intracellular and serum HMGB1 levels significantly increased after contrast media exposure, whereas they markedly decreased after glycyrrhizin pretreatment. SCr and BUN also decreased in PC-AKI with glycyrrhizin compared to PC-AKI. In PC-AKI, we could frequently observe tubular dilatation with H&E staining and cytoplasmic vacuoles on TEM, whereas these findings were attenuated in PC-AKI with glycyrrhizin. Our findings indicate that HMGB1 plays an important role in the development of PC-AKI and that glycyrrhizin has a protective effect against renal injury and dysfunction by inhibiting HMGB1 and reducing oxidative stress.Hyewon OhArom ChoiNieun SeoJoon Seok LimJe Sung YouYong Eun ChungNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Hyewon Oh
Arom Choi
Nieun Seo
Joon Seok Lim
Je Sung You
Yong Eun Chung
Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
description Abstract Post contrast-acute kidney injury (PC-AKI) is defined as the deterioration of renal function after administration of iodinated contrast media. HMGB1 is known to play an important role in the development of acute kidney injury. The purpose of this study was to investigate the association between HMGB1 and PC-AKI and the protective effect of glycyrrhizin, a direct inhibitor of HMGB1, in rats. Rats were divided into three groups: control, PC-AKI and PC-AKI with glycyrrhizin. Oxidative stress was measured with MDA levels and H2DCFDA fluorescence intensity. The mRNA expressions of pro-inflammatory cytokines (IL-1α, IL-1β, IL-6 and TNF-α) and kidney injury markers (KIM-1, NGAL and IL-18) were assessed using RT-PCR and ELISA in kidney tissue. In addition, the serum and intracellular protein levels of HMGB1were analyzed with the enzyme-linked immunosorbent assay (ELISA) and western blotting. Histologic changes were assessed with H&E staining using the transmission electron microscope (TEM). Moreover, serum creatinine (SCr), blood urea nitrogen (BUN) and lactate dehydrogenase (LDH) levels were assessed. Oxidative stress, pro-inflammatory cytokines, kidney injury markers and LDH were significantly higher in PC-AKI compared to the controls, but were lower in PC-AKI with glycyrrhizin. Intracellular and serum HMGB1 levels significantly increased after contrast media exposure, whereas they markedly decreased after glycyrrhizin pretreatment. SCr and BUN also decreased in PC-AKI with glycyrrhizin compared to PC-AKI. In PC-AKI, we could frequently observe tubular dilatation with H&E staining and cytoplasmic vacuoles on TEM, whereas these findings were attenuated in PC-AKI with glycyrrhizin. Our findings indicate that HMGB1 plays an important role in the development of PC-AKI and that glycyrrhizin has a protective effect against renal injury and dysfunction by inhibiting HMGB1 and reducing oxidative stress.
format article
author Hyewon Oh
Arom Choi
Nieun Seo
Joon Seok Lim
Je Sung You
Yong Eun Chung
author_facet Hyewon Oh
Arom Choi
Nieun Seo
Joon Seok Lim
Je Sung You
Yong Eun Chung
author_sort Hyewon Oh
title Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
title_short Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
title_full Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
title_fullStr Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
title_full_unstemmed Protective effect of glycyrrhizin, a direct HMGB1 inhibitor, on post-contrast acute kidney injury
title_sort protective effect of glycyrrhizin, a direct hmgb1 inhibitor, on post-contrast acute kidney injury
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/d3b8a592b6d846bbb0cb4068c4dd6849
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