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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wu, Chuan-Xin He, Lin-Xiang Guo, Hui Tian, Xiao-Xing Liu, Qi Sun, Hang |
| Description | Country affiliation: China Author Affiliation: Wu CX ( *Department of Hepatobiliary Surgery and Institute for Viral Hepatitis, Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.) |
| Abstract | INTRODUCTION: High-mobility group box 1 (HMGB1) is a therapeutic target for sepsis. Glycyrrhizin (GL) is the aglycone of glycyrrhizin derived from licorice. We clarified the anti-inflammatory effects of GL. We explored the anti-HMGB1 effect of GL and elucidated its molecular mechanism, which will be of benefit for sepsis treatment. METHODS: We stimulated murine macrophage-like RAW 264.7 cells with lipopolysaccharide (LPS) and LPS + GL, then measured the expression and release of HMGB1. The expression of related signal transduction factors was detected. RESULTS: High-mobility group box 1 was distributed mainly in the nucleus with lower cytoplasmic levels in RAW 264.7 cells before LPS stimulation. After stimulation, cytoplasmic HMGB1 levels increased gradually, whereas in nuclear fluctuation a trend of HMGB1 expression was observed. Significant upregulation of HMGB1 mRNA occurred 12 h after LPS stimulation. Glycyrrhizin prevented the transfer of HMGB1 from the nucleus to the cytoplasm and inhibited upregulation of HMGB1 mRNA induced by LPS. Phospho-p38 mitogen-activated protein kinase and activated activating protein 1 increased significantly 8 h after LPS stimulation. Tumor necrosis factor and interleukin 6 increased 4 h after LPS stimulation and peaked at 48 h, and HMGB1 increased at 8 h. The Toll-like receptor 4/MD2/nuclear factor κB signaling pathway was activated 4 h after LPS stimulation. Glycyrrhizin inhibited this pathway. CONCLUSIONS: Glycyrrhizin inhibited the expression and release of HMGB1 through blocking the p38 mitogen-activated protein kinase/activating protein 1 signaling pathway then inhibited the massive release of tumor necrosis factor and interleukin 6. |
| File Format | HTM / HTML |
| ISSN | 10732322 |
| Issue Number | 4 |
| Volume Number | 43 |
| e-ISSN | 15400514 |
| Journal | Shock |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2015-04-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Intensive care medicine Glycyrrhizic Acid Chemistry Hmgb1 Protein Metabolism Lipopolysaccharides Sepsis Drug Therapy Animals Anti-inflammatory Agents Cell Nucleus Cytoplasm Inflammation Interleukin-6 Mice Microscopy, Fluorescence Raw 264.7 Cells Signal Transduction Tumor Necrosis Factor-alpha P38 Mitogen-activated Protein Kinases Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Emergency Medicine Critical Care and Intensive Care Medicine |
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