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Clinical significance of serum HMGB1 in COPD and correlation with severity of airflow restriction and immune function. REV ROMANA MED LAB 2022. [DOI: 10.2478/rrlm-2022-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Background: To explore the serum HMGB1 levels in patients with smoking-induced chronic obstructive pulmonary disease (COPD) and the correlations with airflow restriction and immune function.
Methods: A total of 136 COPD patients were divided into mild, moderate and severe + extremely severe groups. Thirty-five healthy subjects were selected as control group. Serum HMGB1 levels were measured by ELISA, and the correlations with pulmonary and immune function indices were analyzed. Receiver operating characteristic (ROC) curve was plotted.
Results: PaO2, eosinophil count, FEV1/FVC, FEV1% pred, and IgA, IgM, IgG levels of COPD patients were lower than those of control group, and decreased with airflow restriction aggravation. PaCO2, leukocyte count, neutrophil percentage, modified British Medical Research Council (mMRC) scale and COPD Assessment Test (CAT) scores, D-Dimer (D-D), PCT, CRP and HMGB1 levels, myeloid dendritic cell (mDC) and plasmacytoid dendritic cell (pDC) counts, and mDCs/pDCs of COPD patients exceeded those of control group, and increased with airflow restriction aggravation (P<0.05). HMGB1 levels of COPD patients were negatively correlated with FEV1/FVC, FEV1% pred, IgA, IgM and IgG levels and positively correlated with mDC count, pDC count and mDCs/pDCs (P<0.0001). The area under ROC curve was 0.883, the optimal cutoff value was 3.63 ng/mL, and sensitivity and specificity were 86.7% and 85.9%, respectively.
Conclusions: Serum HMGB1 level in patients with smoking-induced COPD rises with airflow restriction aggravation and has significant correlations with the decline of pulmonary and immune functions, with high predictive value for COPD. HMGB1 is a potential biomarker for evaluating COPD progression.
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Ni YA, Chen H, Nie H, Zheng B, Gong Q. HMGB1: An overview of its roles in the pathogenesis of liver disease. J Leukoc Biol 2021; 110:987-998. [PMID: 33784425 DOI: 10.1002/jlb.3mr0121-277r] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 01/06/2021] [Accepted: 02/04/2021] [Indexed: 12/15/2022] Open
Abstract
High-mobility group box 1 (HMGB1) is an abundant architectural chromosomal protein that has multiple biologic functions: gene transcription, DNA replication, DNA-damage repair, and cell signaling for inflammation. HMGB1 can be released passively by necrotic cells or secreted actively by activated immune cells into the extracellular milieu after injury. Extracellular HMGB1 acts as a damage-associated molecular pattern to initiate the innate inflammatory response to infection and injury by communicating with neighboring cells through binding to specific cell-surface receptors, including Toll-like receptors (TLRs) and the receptor for advanced glycation end products (RAGE). Numerous studies have suggested HMGB1 to act as a key protein mediating the pathogenesis of chronic and acute liver diseases, including nonalcoholic fatty liver disease, hepatocellular carcinoma, and hepatic ischemia/reperfusion injury. Here, we provide a detailed review that focuses on the role of HMGB1 and HMGB1-mediated inflammatory signaling pathways in the pathogenesis of liver diseases.
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Affiliation(s)
- Yuan-Ao Ni
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China
| | - Hui Chen
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China
| | - Hao Nie
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China.,Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China
| | - Bing Zheng
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China.,Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China.,Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, Hubei Province, People's Republic of China
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Ferulic acid ameliorates intrahepatic triglyceride accumulation in vitro but not in high fat diet-fed C57BL/6 mice. Food Chem Toxicol 2021; 149:111978. [PMID: 33428987 DOI: 10.1016/j.fct.2021.111978] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/26/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
Phenolic acids can improve obesity-related and metabolic syndrome-related conditions including non-alcoholic fatty liver disease (NAFLD). In this study, the effects of ferulic acid (FA) on the metabolic changes related to NAFLD were investigated in oleic acid (OA)-treated HepG2 cells and C57BL/6 mice fed a high fat diet (HFD). In vitro, FA (25 and 50 μg/mL) treatment significantly reduced cellular lipid accumulation with no obvious cytotoxicity, in-part mediated by the suppression of ERK1/2, JNK1/2/3, and HGMB1 expression. However, in vivo administration of FA (20 mg/kg bw·day) for 17 weeks led to no obvious effects on body weight and liver weight gain, blood lipid profiles, or histological abnormalities in obese C57BL/6 mice induced by HFD. Taken together, the positive effects of FA on the reduction of hepatic triglyceride accumulation were therefore demonstrated in cellular model, while its hepatic protective effects might need to be further explored in rodent models and clinical trials.
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Lin M, Long J, Li W, Yang C, Loughran P, O'Doherty R, Billiar TR, Deng M, Scott MJ. Hepatocyte high-mobility group box 1 protects against steatosis and cellular stress during high fat diet feeding. Mol Med 2020; 26:115. [PMID: 33238880 PMCID: PMC7687718 DOI: 10.1186/s10020-020-00227-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Circulating high-mobility group box 1 (HMGB1) plays important roles in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Intracellular HMGB1 is critical for the biology of hepatocytes. However, the intracellular role of HMGB1 in hepatocellular steatosis is unknown. Therefore, we aimed to investigate the role of hepatocyte-specific HMGB1 (HC-HMGB1) in development of hepatic steatosis. METHODS Wild type (WT) C57BL/6 and HC-HMGB1-/- mice were fed high-fat diet (HFD) or low-fat diet (LFD) for up to 16 weeks. RESULTS As expected, HMGB1 translocated from nuclear into cytoplasm and released into circulation after HFD treatment. HC-HMGB1 deficiency significantly reduced circulating HMGB1, suggesting that hepatocyte is a major source of circulating HMGB1 during NAFLD. Unexpectedly, HC-HMGB1 deficiency promoted rapid weight gain with enhanced hepatic fat deposition compared with WT at as early as 4 weeks after HFD treatment. Furthermore, there was no difference between WT and HC-HMGB1-/- mice in glucose tolerance, energy expenditure, liver damage or systemic inflammation. Interestingly, hepatic gene expression related to free fatty acid (FFA) β-oxidation was significantly down-regulated in HC-HMGB1-/- mice compared with WT, and endoplasmic reticulum (ER) stress markers were significantly higher in livers of HC-HMGB1-/- mice. In vitro experiments using primary mouse hepatocytes showed absence of HMGB1 increased FFA-induced intracellular lipid accumulation, accompanied by increased ER-stress, significant downregulation of FFA β-oxidation, and reduced oxidative phosphorylation. CONCLUSIONS Our findings suggest that hepatocyte HMGB1 protects against dysregulated lipid metabolism via maintenance of β-oxidation and prevention of ER stress. This represents a novel mechanism for HMGB1-regulation of hepatocellular steatosis, and suggests that stabilizing HMGB1 in hepatocytes may be effective strategies for prevention and treatment of NAFLD.
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Affiliation(s)
- Minjie Lin
- Clinical Skills Training Center, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Jungke Long
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Department of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Wenbo Li
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Department of Plastic Surgery, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Chenxuan Yang
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Tsinghua University School of Medicine, Beijing, 100084, China
| | - Patricia Loughran
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Robert O'Doherty
- The Center for Metabolism and Mitochondrial Medicine of University of Pittsburgh, Pittsburgh, PA, 15260, USA
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Meihong Deng
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA.
- University of Pittsburgh, NW607 MUH, 3459 Fifth Ave, Pittsburgh, PA, 15213, USA.
| | - Melanie J Scott
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA.
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA.
- University of Pittsburgh, NW653 MUH, 3459 Fifth Ave, Pittsburgh, PA, 15213, USA.
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Li B, Peng X, Li H, Chen F, Chen Y, Zhang Y, Le K. The performance of the alarmin HMGB1 in pediatric diseases: From lab to clinic. IMMUNITY INFLAMMATION AND DISEASE 2020; 9:8-30. [PMID: 33140586 PMCID: PMC7860603 DOI: 10.1002/iid3.370] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/10/2020] [Accepted: 10/21/2020] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The ubiquitously expressed nonhistone nuclear protein high-mobility group box protein 1 (HMGB1) has different functions related to posttranslational modifications and cellular localization. In the nucleus, HMGB1 modulates gene transcription, replication and DNA repair as well as determines chromosomal architecture. When the post-transcriptional modified HMGB1 is released into the extracellular space, it triggers several physiological and pathological responses and initiates innate immunity through interacting with its reciprocal receptors (i.e., TLR4/2 and RAGE). The effect of HMGB1-mediated inflammatory activation on different systems has received increasing attention. HMGB1 is now considered to be an alarmin and participates in multiple inflammation-related diseases. In addition, HMGB1 also affects the occurrence and progression of tumors. However, most studies involving HMGB1 have been focused on adults or mature animals. Due to differences in disease characteristics between children and adults, it is necessary to clarify the role of HMGB1 in pediatric diseases. METHODS AND RESULTS Through systematic database retrieval, this review aimed to first elaborate the characteristics of HMGB1 under physiological and pathological conditions and then discuss the clinical significance of HMGB1 in the pediatric diseases according to different systems. CONCLUSIONS HMGB1 plays an important role in a variety of pediatric diseases and may be used as a diagnostic biomarker and therapeutic target for new strategies for the prevention and treatment of pediatric diseases.
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Affiliation(s)
- Bo Li
- Department of Cardiology, Children's Hospital of Hebei Province Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xin Peng
- Department of Otolaryngology, The Affiliated Children's Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - He Li
- Department of Urology Surgery, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Fei Chen
- Department of Child Health Care, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Yuxia Chen
- Ministry of Education Key Laboratory of Child Development and Disorders, and Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, and Rehabilitation Centre, Children's Hospital, Chongqing Medical University, Chongqing, Yuzhong, China
| | - Yingqian Zhang
- Department of Cardiology, Children's Hospital of Hebei Province Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Kai Le
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Gaskell H, Ge X, Desert R, Das S, Han H, Lantvit D, Guzman G, Nieto N. Ablation of Hmgb1 in Intestinal Epithelial Cells Causes Intestinal Lipid Accumulation and Reduces NASH in Mice. Hepatol Commun 2019; 4:92-108. [PMID: 31909358 PMCID: PMC6939545 DOI: 10.1002/hep4.1448] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/20/2019] [Indexed: 12/16/2022] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is a metabolic disorder in which poor nutrition and the gut-to-liver interaction play a major role. We previously established that hepatic high mobility group box-1 (HMGB1) is involved in chronic liver disease. HMGB1 increases in patients with NASH and it is expressed in intestinal epithelial cells (IEC); yet, the role of intestinal HMGB1 in the pathogenesis of NASH has not been investigated. Thus, we hypothesized that IEC-derived HMGB1 could play a role in NASH due to local effects in the intestine that govern hepatic steatosis. Control littermates and Hmgb1 ΔIEC mice were fed for 1 or 24 weeks a control diet or a high fat, high cholesterol (CHO) and fructose-enriched diet (HFCFD). Hepatic and intestinal injury were analyzed. Hmgb1 ΔIEC mice were protected from HFCFD-induced NASH after 1 or 24 weeks of feeding; however, they showed extensive atypical lipid droplet accumulation and increased concentrations of triglycerides (TG) and CHO in jejunal IEC together with lower TG and other lipid classes in serum. Olive oil or CHO gavage resulted in decreased serum TG and CHO in Hmgb1 ΔIEC mice, respectively, indicating delayed and/or reduced chylomicron (CM) efflux. There was significant up-regulation of scavenger receptor class B type 1 (SR-B1) and down-regulation of apolipoprotein B48 (ApoB48) proteins, suggesting decreased lipid packaging and/or CM formation that resulted in lesser hepatosteatosis. Conclusion: Ablation of Hmgb1 in IEC causes up-regulation of SR-B1 and down-regulation of ApoB48, leads to lipid accumulation in jejunal IEC, decreases CM packaging and/or release, reduces serum TG, and lessens liver steatosis, therefore protecting Hmgb1 ΔIEC mice from HFCFD-induced NASH.
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Affiliation(s)
- Harriet Gaskell
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Xiaodong Ge
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Romain Desert
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Sukanta Das
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Hui Han
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Daniel Lantvit
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Grace Guzman
- Department of Pathology University of Illinois at Chicago Chicago IL
| | - Natalia Nieto
- Department of Pathology University of Illinois at Chicago Chicago IL.,Department of Medicine Division of Gastroenterology and Hepatology University of Illinois at Chicago Chicago IL
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Watt MJ, Miotto PM, De Nardo W, Montgomery MK. The Liver as an Endocrine Organ-Linking NAFLD and Insulin Resistance. Endocr Rev 2019; 40:1367-1393. [PMID: 31098621 DOI: 10.1210/er.2019-00034] [Citation(s) in RCA: 324] [Impact Index Per Article: 64.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/04/2019] [Indexed: 02/06/2023]
Abstract
The liver is a dynamic organ that plays critical roles in many physiological processes, including the regulation of systemic glucose and lipid metabolism. Dysfunctional hepatic lipid metabolism is a cause of nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disorder worldwide, and is closely associated with insulin resistance and type 2 diabetes. Through the use of advanced mass spectrometry "omics" approaches and detailed experimentation in cells, mice, and humans, we now understand that the liver secretes a wide array of proteins, metabolites, and noncoding RNAs (miRNAs) and that many of these secreted factors exert powerful effects on metabolic processes both in the liver and in peripheral tissues. In this review, we summarize the rapidly evolving field of "hepatokine" biology with a particular focus on delineating previously unappreciated communication between the liver and other tissues in the body. We describe the NAFLD-induced changes in secretion of liver proteins, lipids, other metabolites, and miRNAs, and how these molecules alter metabolism in liver, muscle, adipose tissue, and pancreas to induce insulin resistance. We also synthesize the limited information that indicates that extracellular vesicles, and in particular exosomes, may be an important mechanism for intertissue communication in normal physiology and in promoting metabolic dysregulation in NAFLD.
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Affiliation(s)
- Matthew J Watt
- Department of Physiology, University of Melbourne, Melbourne, Victoria, Australia
| | - Paula M Miotto
- Department of Physiology, University of Melbourne, Melbourne, Victoria, Australia
| | - William De Nardo
- Department of Physiology, University of Melbourne, Melbourne, Victoria, Australia
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Chen Y, Sun H, Bai Y, Zhi F. Gut dysbiosis-derived exosomes trigger hepatic steatosis by transiting HMGB1 from intestinal to liver in mice. Biochem Biophys Res Commun 2019; 509:767-772. [PMID: 30616887 DOI: 10.1016/j.bbrc.2018.12.180] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 12/29/2018] [Indexed: 01/06/2023]
Abstract
In the past decade, research on the biology of the gut-liver axis has assisted in understanding the basic biology of nonalcoholic fatty liver disease (NAFLD). High mobility group box 1 (HMGB1) protein, in its role as a crucial injury-related molecule, displays a substantial correlation with the degree of liver steatosis. However, its underlying molecular mechanism remains unclear. In the current study of ASC-/- mice on a high-fat diet (HFD), we observed disorder of the gut microbiota along with abnormal increases in the Firmicutes:Bacteroidetes ratio and in Streptomyces, both of which were detected by 16S rDNA sequencing. Therefore, we investigated the intestinal mucosal injury and analyzed the NAFLD activity score and found that the ASC-/--HFD group was more severely impaired than the others. Moreover, HMGB1 increased significantly in the intestinal tissue and was co-localized with an exosomal marker. We revealed that HMGB1 was significantly elevated in the exosomes of the ASC-/--HFD group. It transported by exosomes from the intestine to the liver, thereby triggering hepatic steatosis when dysbiosis. In conclusion, the findings indicated that HMGB1 plays a crucial role in the gut-liver axis mechanism.
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Affiliation(s)
- Yu Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China; Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510080, China
| | - Huanhuan Sun
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi, 710061, China
| | - Yang Bai
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Fachao Zhi
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China.
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