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Mou Y, Liao W, Li Y, Wan L, Liu J, Luo X, Shen H, Sun Q, Wang J, Tang J, Wang Z. Glycyrrhizin and the Related Preparations: An Inspiring Resource for the Treatment of Liver Diseases. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2024; 52:315-354. [PMID: 38553799 DOI: 10.1142/s0192415x24500149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Liver diseases and their related complications endanger the health of millions of people worldwide. The prevention and treatment of liver diseases are still serious challenges both in China and globally. With the improvement of living standards, the prevalence of metabolic liver diseases, including non-alcoholic fatty liver disease and alcoholic liver disease, has increased at an alarming rate, resulting in more cases of end-stage liver disease. Therefore, the discovery of novel therapeutic drugs for the treatment of liver diseases is urgently needed. Glycyrrhizin (GL), a triterpene glycoside from the roots of licorice plants, possesses a wide range of pharmacological and biological activities. Currently, GL preparations (GLPs) have certain advantages in the treatment of liver diseases, with good clinical effects and fewer adverse reactions, and have shown broad application prospects through multitargeting therapeutic mechanisms, including antisteatotic, anti-oxidative stress, anti-inflammatory, immunoregulatory, antifibrotic, anticancer, and drug interaction activities. This review summarizes the currently known biological activities of GLPs and their medical applications in the treatment of liver diseases, and highlights the potential of these preparations as promising therapeutic options and their alluring prospects for the treatment of liver diseases.
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Affiliation(s)
- Yu Mou
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Wenhao Liao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Yuchen Li
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
- Department of Laboratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Lina Wan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Jingwen Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Xialing Luo
- Department of Respiratory, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Hongping Shen
- National Traditional Chinese Medicine Clinical Research Base of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646000, P. R. China
| | - Qin Sun
- National Traditional Chinese Medicine Clinical Research Base of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646000, P. R. China
| | - Jing Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
- Department of Obstetrics and Gynecology, Bishan Hospital of Traditional Chinese Medicine, Chongqing 402760, P. R. China
| | - Jianyuan Tang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
| | - Zhilei Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, P. R. China
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Shi B, Zhang Z, Xing J, Liu Q, Cai J, Zhang Z. Perfluorooctane sulfonate causes pyroptosis and lipid metabolism disorders through ROS-mediated NLRP3 inflammasome activation in grass carp hepatocyte. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 267:106839. [PMID: 38228041 DOI: 10.1016/j.aquatox.2024.106839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/06/2024] [Accepted: 01/12/2024] [Indexed: 01/18/2024]
Abstract
The surfactant perfluorooctane sulfonate (PFOS) is widely produced worldwide. It is a persistent organic pollutant in the aquatic environment and poses a serious threat to aquatic organisms, as PFOS exposure can cause liver injury in a wide range of organisms. However, it is unclear whether PFOS exposure-induced hepatocellular injury in fish is associated with ROS-mediated activation of NLRP3 inflammasome. In this study, various PFOS concentrations were applied to L8824 cells, a cell line of grass carp hepatocytes. The detrimental impacts of PFOS on oxidative stress, pyroptosis, lipid metabolism, and the discharge of inflammatory factors were examined. MCC950 and N-acetylcysteine were employed to hinder the PFOS-stimulated activation of the NLRP3 inflammasome and the excessive generation of reactive oxygen species in L8824 cells, respectively. This study demonstrated that treatment with PFOS resulted in oxidative stress and activation of NLRP3 inflammasome in L8824 cells. This led to increased expression levels of indicators related to pyroptosis, accompanied by the upregulation of pro-inflammatory cytokine expression as well as downregulation of anti-inflammatory factors. In addition, following PFOS exposure, the expression levels of genes related to lipid synthesis were upregulated and lipid catabolism-related genes were downregulated. Surprisingly, both N-acetylcysteine and MCC950 interventions significantly reduced PFOS-induced L8824 cell pyroptosis and lipid metabolism disorders. In conclusion, this research demonstrated that PFOS drives NLRP3 inflammasome activation through oxidative stress induced by reactive oxygen species overload. This in turn leads to pyroptosis and lipid metabolism disorders.
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Affiliation(s)
- Bendong Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Zhuoqi Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jiao Xing
- China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Qiaohan Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jingzeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China.
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Zhang H, Wang Y, Zhang X, Zhang L, Zhao X, Xu Y, Wang P, Liang X, Xue M, Liang H. Maternal Folic Acid Supplementation during Pregnancy Prevents Hepatic Steatosis in Male Offspring of Rat Dams Fed High-Fat Diet, Which Is Associated with the Regulation of Gut Microbiota. Nutrients 2023; 15:4726. [PMID: 38004120 PMCID: PMC10675082 DOI: 10.3390/nu15224726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Maternal dietary patterns during pregnancy have been demonstrated to impact the structure of the gut microbiota in offspring, altering their susceptibility to diseases. This study is designed to elucidate whether the impact of folic acid supplementation during pregnancy on hepatic steatosis in male offspring of rat dams exposed to a high-fat diet (HFD) is related to gut-liver axis homeostasis. In this study, female rats were administered a HFD and simultaneously supplemented with 5 mg/kg folic acid throughout their pregnancy. Histopathological examination showed that folic acid supplementation effectively ameliorated hepatic lipid accumulation and inflammatory infiltrate in male offspring subjected to a maternal HFD. Maternal folic acid supplementation reduced the abundance of Desulfobacterota and the Firmicutes/Bacteroidota (F/B) ratio in male offspring. The expression of tight junction proteins in the colon was significantly upregulated, and the serum LPS level was significantly reduced. Furthermore, there was a notable reduction in the hepatic expression of the TLR4/NF-κB signaling pathway and subsequent inflammatory mediators. Spearman's correlation analysis revealed significant associations between hepatic inflammation-related indices and several gut microbiota, particularly Desulfobacterota and Lactobacillus. With a reduction in hepatic inflammation, the expression of PPAR-α was upregulated, and the expression of SREBP-1c and its downstream lipid metabolism-related genes was downregulated. In summary, folic acid supplementation during pregnancy modulates gut microbiota and enhances intestinal barrier integrity in male offspring of HFD dams. This helps reduce the LPS leakage and suppress the expression of TLR4/NF-κB pathway in the liver, thereby improving lipid metabolism disorders, and alleviating hepatic steatosis.
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Affiliation(s)
- Huaqi Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Yutong Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Xinyu Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Li Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Xuenuo Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Yan Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Peng Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Xi Liang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
| | - Meilan Xue
- Department of Biochemistry and Molecular Biology, Basic Medical College, Qingdao University, Qingdao 266071, China;
| | - Hui Liang
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China; (H.Z.); (Y.W.); (X.Z.); (L.Z.); (X.Z.); (Y.X.); (P.W.); (X.L.)
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Bravo M, Simón J, González-Recio I, Martinez-Cruz LA, Goikoetxea-Usandizaga N, Martínez-Chantar ML. Magnesium and Liver Metabolism Through the Lifespan. Adv Nutr 2023; 14:739-751. [PMID: 37207838 PMCID: PMC10334155 DOI: 10.1016/j.advnut.2023.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/24/2023] [Accepted: 05/11/2023] [Indexed: 05/21/2023] Open
Abstract
Within the organism, the liver is the main organ responsible for metabolic homeostasis and xenobiotic transformation. To maintain an adequate liver weight-to-bodyweight ratio, this organ has an extraordinary regenerative capacity and is able to respond to an acute insult or partial hepatectomy. Maintenance of hepatic homeostasis is crucial for the proper functioning of the liver, and in this context, adequate nutrition with macro- and micronutrient intake is mandatory. Among all known macro-minerals, magnesium has a key role in energy metabolism and in metabolic and signaling pathways that maintain liver function and physiology throughout its life span. In the present review, the cation is reported as a potential key molecule during embryogenesis, liver regeneration, and aging. The exact role of the cation during liver formation and regeneration is not fully understood due to its unclear role in the activation and inhibition of those processes, and further research in a developmental context is needed. As individuals age, they may develop hypomagnesemia, a condition that aggravates the characteristic alterations. Additionally, risk of developing liver pathologies increases with age, and hypomagnesemia may be a contributing factor. Therefore, magnesium loss must be prevented by adequate intake of magnesium-rich foods such as seeds, nuts, spinach, or rice to prevent age-related hepatic alterations and contribute to the maintenance of hepatic homeostasis. Since magnesium-rich sources include a variety of foods, a varied and balanced diet can meet both macronutrient and micronutrient needs.
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Affiliation(s)
- Miren Bravo
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Jorge Simón
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain
| | - Irene González-Recio
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Luis Alfonso Martinez-Cruz
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Naroa Goikoetxea-Usandizaga
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain.
| | - María Luz Martínez-Chantar
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain.
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Gao W, Zhao Y, Guo L, Wang Y, Gong H, Zhang B, Yan M. Comparative effectiveness of glycyrrhizic acid preparations aimed at improving liver function of patients with chronic hepatitis B: A network meta-analysis of 53 randomized controlled trials. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 116:154883. [PMID: 37224775 DOI: 10.1016/j.phymed.2023.154883] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/27/2023] [Accepted: 05/15/2023] [Indexed: 05/26/2023]
Abstract
BACKGROUND AND OBJECTIVES Entecavir (ETV) has disadvantages, such as poor improvement in liver function, during the treatment of Chronic hepatitis B (CHB). Thus ETV is often used in clinical therapy with glycyrrhizic acid (GA) preparations. However, due to the lack of reliable and direct clinical studies, it remains controversial whether glycyrrhizic acid preparations have the best efficacy in CHB. Therefore, we aimed to compare and rank the different GA preparations in the treatment of CHB using network meta-analysis (NMA). METHODS We systematically searched MEDLINE, EMBASE, Cochrane Library, Web of Science, China national knowledge internet (CNKI), Wanfang, VIP, and SinoMed databases as of August 4, 2022. Literature was screened according to predefined inclusion and exclusion criteria to extract meaningful information. A Bayesian approach was used for random effects model network meta-analysis, and Stata 17 software was used for data analysis. RESULTS From 1074 papers, we included 53 relevant randomized clinical trials (RCTs). For the primary outcome, we used the overall effective rate in assessing the effectiveness of treatment for CHB (31 RCTs including 3007 patients): CGI, CGT, DGC and MgIGI significantly reduced the incidence of overall response compared to controls (RRs range from 1.16 to 1.24); SUCRA results showed that MgIGI was the best (SUCRA 0.923). In terms of secondary outcomes, we assessed the effect of treatment for CHB according to the level of reduction in ALT and AST: for ALT (37 RCTs including 3752 patients), CGI, CGT, DGC, DGI and MgIGI significantly improved liver function index compared to controls (MD range from 14.65 to 20.41); SUCRA results showed that CGI was the best (SUCRA 0.87); for AST, GI, CGT, DGC, DGI and MgIGI significantly improved liver function index compared to the control group (MD range from 17.46 to 24.42); SUCRA results showed that MgIGI was the best (SUCRA 0.871). CONCLUSION In this study, we verified that the combination of GA and Entecavir is more effective than entecavir monotherapy in the treatment of hepatitis B. MgIGI and CGI showed clinically significant effects on liver function recovery compared with other GA preparations. MgIGI appeared to be the best choice among all GA preparations for the treatment of CHB. Our study provides some references for the treatment of CHB.
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Affiliation(s)
- Wen Gao
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China; Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - Yichang Zhao
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Lin Guo
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Yikun Wang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Hui Gong
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Bikui Zhang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Miao Yan
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha 410011, China.
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Huang W, Zhang Z, Qiu Y, Gao Y, Fan Y, Wang Q, Zhou Q. NLRP3 inflammasome activation in response to metals. Front Immunol 2023; 14:1055788. [PMID: 36845085 PMCID: PMC9950627 DOI: 10.3389/fimmu.2023.1055788] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 01/16/2023] [Indexed: 02/12/2023] Open
Abstract
Implant surgery is followed by a series of inflammatory reactions that directly affect its postoperative results. The inflammasome plays a vital role in the inflammatory response by inducing pyroptosis and producing interleukin-1β, which plays a critical role in inflammation and tissue damage. Therefore, it is essential to study the activation of the inflammasome in the bone healing process after implant surgery. As metals are the primary implant materials, metal-induced local inflammatory reactions have received significant attention, and there has been more and more research on the activation of the NLRP3 (NOD-like receptor protein-3) inflammasome caused by these metals. In this review, we consolidate the basic knowledge on the NLRP3 inflammasome structures, the present knowledge on the mechanisms of NLRP3 inflammasome activation, and the studies of metal-induced NLRP3 inflammasome activation.
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Affiliation(s)
- Wanyi Huang
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China
| | - Ziqi Zhang
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China
| | - Yueyang Qiu
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China
| | - Yuan Gao
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China,Department of Orthodontics, Shenyang Stomatological Hospital, Shenyang, China
| | - Yongqiang Fan
- College of Life and Health Sciences, Northeastern University, Shenyang, China,Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang, China
| | - Qiang Wang
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China,*Correspondence: Qing Zhou, ; Qiang Wang,
| | - Qing Zhou
- School and Hospital of Stomatology, China Medical University, Shenyang, China,Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, China,*Correspondence: Qing Zhou, ; Qiang Wang,
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Tang L, Mei X, Ye M, Liu Y, Huang Y, Yu J, Zhang L, Zhuge S, Jiang G, Zhu J. Sclareol ameliorates liver injury by inhibiting nuclear factor-kappa B/NOD-like receptor protein 3-mediated inflammation and lipid metabolism disorder in diabetic mice. Int J Immunopathol Pharmacol 2023; 37:3946320231223644. [PMID: 38131326 DOI: 10.1177/03946320231223644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Objectives: Sclareol (SCL) is a natural diterpene with anti-inflammation and antioxidant properties. This study aimed to assess the hepatoprotective effects of SCL in diabetic mice. Methods: SCL (10 mg/kg) was administered intragastrically to C57BL/6 mice with streptozotocin-induced diabetes daily for 5 weeks to evaluate its beneficial effects in liver injury. Body and liver weight and blood glucose levels were measured. Liver histopathology, fibrosis, and lipid accumulation were evaluated using hematoxylin and eosin, Masson's trichrome, and Oil Red O staining, respectively. Serum hepatic enzyme and lipid levels were measured using an automatic biochemical analyzer. Hepatocellular apoptosis was measured using the terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay. Oxidative stress markers and reactive oxygen species (ROS) were measured using appropriate assay kits. The effects of sclareol on inflammation and lipid metabolism was evaluated by enzyme-linked immunosorbent assay (ELISA), immunohistochemical analysis, and Western blot assays. Results: SCL significantly decreased serum liver enzymes and lipids levels, and alleviated adipogenesis and fibrosis. Moreover, the protein levels of acetyl-CoA carboxylase and sterol response element-binding protein 1 were downregulated, whereas the expression of carnitine palmitoyl transferase 1 was upregulated. SCL increased the antioxidant activity, and decreased ROS levels. SCL alleviated hepatic mitochondrial damage. Furthermore, SCL inhibited Kupffer cell infiltration and reduced serum inflammatory cytokine levels. SCL significantly downregulated the protein expression of nuclear factor-kappa B (NF-κB) P65, NOD-like receptor protein 3 (NLRP3), caspase 1, and interleukin-1β. Conclusions: Our findings suggest that SCL improves diabetes-induced liver injury by alleviating the NF-κB/NLRP3-mediated inflammation and lipid metabolism disorder.
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Affiliation(s)
- Leilei Tang
- Department of Pharmacy, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, China
| | - Xuan Mei
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Mengling Ye
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Yang Liu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Yujie Huang
- Research Center for Clinical Pharmacy, Zhejiang Provincial Key Laboratory for Drug Evaluation and Clinical Research, The First Affiliated Hospital, Zhejiang UniversitySchool of Medicine, Hangzhou, China
| | - Jiawen Yu
- Department of Pharmacy, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, China
| | - Lingdi Zhang
- Department of Pharmacy, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, China
| | - Sheng Zhuge
- Department of Surgery, The First People 's Hospital of Yuhang District, Hangzhou, China
| | - Guojun Jiang
- Department of Pharmacy, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, China
| | - Jianjun Zhu
- Department of Pharmacy, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, China
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Tang Q, Liu W, Yang X, Tian Y, Chen J, Hu Y, Fu N. ATG5-Mediated Autophagy May Inhibit Pyroptosis to Ameliorate Oleic Acid-Induced Hepatocyte Steatosis. DNA Cell Biol 2022; 41:1038-1052. [PMID: 36473201 DOI: 10.1089/dna.2022.0265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Despite activated autophagy ameliorating hepatocyte steatosis and metabolic associated fatty liver disease (MAFLD), mechanisms underlying the beneficial roles of autophagy in hepatic deregulation of lipid metabolism remain undefined. We explored whether autophagy can ameliorate oleic acid (OA)-induced hepatic steatosis by suppressing pyroptosis. Pyroptosis is involved in hepatocyte steatosis induced by OA. In addition, autophagy flux was blocked in OA-treated hepatocytes. Treatment with OA induced lipid accumulation in liver cell line L-02, which was attenuated by rapamycin (Rap), an autophagy agonist, while aggravated by autophagy inhibitor bafilomycin A1 (Baf A1). Inversely, treatment with pyroptotic agonist Nigericin aggravated OA-induced hepatic steatosis, while pyroptosis antagonist disulfiram ameliorated this effect. Mechanistically, treatment with Rap downregulated the expression of pyroptosis-related proteins, including NLRP3, Caspase-1, IL-18, GSDMD expression evoked by OA, thus improving pyroptosis in hepatic steatosis. Significantly, overexpression of ATG5 obviously downregulated cleaved caspase-1 expressions without altering the total caspase1 expressions in hepatic cell steatosis. Taken together, our studies strongly demonstrated that the activation of ATG5 inhibits pyroptosis to improve hepatic steatosis and suggest autophagy activation as a potential therapeutic strategy for pyroptosis-mediated MAFLD.
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Affiliation(s)
- Qianyu Tang
- Department of Gastroenterology, Hunan Provincial Clinical Research Center of Metabolic Associated Fatty Liver Disease, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, China
| | - Wenhui Liu
- Department of Intensive Care Unit, Affiliated Hengyang Hospital, Southern Medical University (Hengyang Central Hospital), Hengyang, China
| | - Xuefeng Yang
- Department of Gastroenterology, Hunan Provincial Clinical Research Center of Metabolic Associated Fatty Liver Disease, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, China
| | - Yaying Tian
- Department of Infectious and Affiliated Nanhua Hospital, University of South China, Hengyang, China
| | - Jiacheng Chen
- Department of Intensive Care Unit, Affiliated Nanhua Hospital, University of South China, Hengyang, China
| | - Yang Hu
- Department of Gastroenterology, Hunan Provincial Clinical Research Center of Metabolic Associated Fatty Liver Disease, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, China
| | - Nian Fu
- Department of Gastroenterology, Hunan Provincial Clinical Research Center of Metabolic Associated Fatty Liver Disease, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, China.,Clinical Research Institute, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, China
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Dai W, Wang K, Zhen X, Huang Z, Liu L. Magnesium isoglycyrrhizinate attenuates acute alcohol-induced hepatic steatosis in a zebrafish model by regulating lipid metabolism and ER stress. Nutr Metab (Lond) 2022; 19:23. [PMID: 35331265 PMCID: PMC8944020 DOI: 10.1186/s12986-022-00655-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 03/01/2022] [Indexed: 12/15/2022] Open
Abstract
Background Alcoholism is a well-known risk factor for liver injury and is one of the major causes of hepatic steatosis worldwide. Although many drugs have been reported to have protective effects against acute alcohol-induced hepatotoxicity, there is limited available treatment for alcoholic liver disease (ALD), indicating an urgent need for effective therapeutic options. Herein, we first reported the protective effects of magnesium isoglycyrrhizinate (MgIG) on acute alcohol-induced hepatic steatosis and its related mechanisms in a zebrafish model. Methods Alcohol was administered directly to embryo medium at 5 days post-fertilization (dpf) for up to 32 h. MgIG was given to the larvae 2 h before the administration of alcohol and then cotreated with alcohol starting at 5 dpf. Oil red O staining was used to determine the incidence of steatosis, and pathological features of the liver were assessed by hematoxylin–eosin staining. Biological indexes, total cholesterol (TC) and triacylglycerol (TG) were detected in the livers of zebrafish larvae. Morphological changes in the livers of zebrafish larvae were observed using liver-specific EGFP transgenic zebrafish (Tg(lfabp10a:eGFP)). The expression levels of critical molecules related to endoplasmic reticulum (ER) stress and lipid metabolism were detected by qRT–PCR, whole-mount in situ hybridization and western blotting. Results Alcohol-treated larvae developed hepatomegaly and steatosis after 32 h of exposure. We found that MgIG improved hepatomegaly and reduced the incidence of steatosis in a dose-dependent manner by oil red O staining and diminished deposits of alcohol-induced fat droplets by histologic analysis. Moreover, MgIG significantly decreased the levels of TC and TG in the livers of zebrafish larvae. Furthermore, the expression levels of critical genes involved in ER stress (atf6, irela, bip, chop) and the key enzymes regulating lipid metabolism (acc1, fasn, hmgcs1 and hmgcra) were significantly higher in the alcohol-treated group than in the control group. However, in the MgIG plus alcohol-treated group, the expression of these genes was markedly decreased compared with that in the alcohol-treated group. Whole-mount in situ hybridization and western blotting also showed that MgIG had an effect on the expression levels of critical genes and proteins involved in lipid metabolism and ER stress. Our results revealed that MgIG could markedly regulate these genes and protect the liver from ER stress and lipid metabolism disorders. Conclusions Our study is the first to demonstrate that MgIG could protect the liver from acute alcohol stimulation by ameliorating the disorder of lipid metabolism and regulating ER stress in zebrafish larvae. Supplementary Information The online version contains supplementary material available at 10.1186/s12986-022-00655-7.
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Affiliation(s)
- Wencong Dai
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Kunyuan Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, Guangdong, China
| | - Xinchun Zhen
- Department of Infectious Diseases, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, 519000, Guangdong, China
| | - Zhibin Huang
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Li Liu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Wei Z, Sun X, He Q, Zhao Y, Wu Y, Han X, Wu Z, Chu X, Guan S. Nephroprotective effect of magnesium isoglycyrrhizinate against arsenic trioxide‑induced acute kidney damage in mice. Exp Ther Med 2022; 23:276. [PMID: 35317438 PMCID: PMC8908469 DOI: 10.3892/etm.2022.11202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/17/2022] [Indexed: 11/15/2022] Open
Abstract
Magnesium isoglycyrrhizinate (MgIG) has anti-inflammatory, antioxidative, antiviral and anti-hepatotoxic effects. However, protective effects of MgIG against renal damage caused by arsenic trioxide (ATO) have not been reported. The present study aimed to clarify the protective function of MgIG on kidney damaged induced by ATO. Other than the control group and the group treated with MgIG alone, mice were injected intraperitoneally with ATO (5 mg/kg/day) for 7 days to establish a mouse model of kidney damage. On the 8th day, blood and kidney tissue were collected and the inflammatory factors and antioxidants levels in the kidney tissue and serum were measured. The expression of protein levels of caspase-3, Bcl-2, Bax, Toll-like receptor-4 (TLR4) and nuclear factor-κB (NF-κB) were determined via western blot analysis. In the renal tissue of mice, ATO exposure dramatically elevated markers of oxidative stress, apoptosis and inflammation. However, MgIG could also restore the activities of urea nitrogen and creatinine to normal levels, decrease the malondialdehyde level and reactive oxygen species formation and increase superoxide dismutase, catalase and glutathione activities. MgIG also ameliorated the morphological abnormalities generated by ATO, reduced inflammation and apoptosis and inhibited the TLR4/NF-κB signaling pathway. In conclusion, MgIG may mitigate ATO-induced kidney damage by decreasing apoptosis, oxidative stress and inflammation and its mechanism may be connected to the inhibition of TLR4/NF-κB signaling.
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Affiliation(s)
- Ziheng Wei
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
| | - Xiaoqi Sun
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
| | - Qianqian He
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
| | - Yang Zhao
- Department of Academic Research, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Yongchao Wu
- Department of Radiological Intervention, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Xue Han
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
| | - Zhonglin Wu
- Department of Radiological Intervention, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Xi Chu
- Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Shengjiang Guan
- School of Basic Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
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Zou J, Yan C, Wan JB. Red yeast rice ameliorates non-alcoholic fatty liver disease through inhibiting lipid synthesis and NF-κB/NLRP3 inflammasome-mediated hepatic inflammation in mice. Chin Med 2022; 17:17. [PMID: 35078487 PMCID: PMC8788078 DOI: 10.1186/s13020-022-00573-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/12/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Red yeast rice (RYR), a nutraceutical with a profound cholesterol-lowering effect, was found to attenuate non-alcoholic fatty liver disease (NAFLD) in mice. Despite monacolin K in RYR being a specific inhibitor of hydroxymethylglutaryl-coenzyme A reductase (HMCGR), the mechanisms underlying the protective effects of RYR against NAFLD are not fully elucidated. METHODS Using a mouse model of high-fat diet (HFD) feeding and a cellular model of HepG2 cells challenged by lipopolysaccharide (LPS) and palmitic acid (PA), the possible molecular mechanisms were exploited in the aspects of NF-κB/NLRP3 inflammasome and mTORC1-SREBPs signaling pathways by examining the relevant gene/protein expressions. Subsequently, the correlation between these two signals was also verified using cellular experiments. RESULTS RYR ameliorated lipid accumulation and hepatic inflammation in vivo and in vitro. RYR improved lipid metabolism through modulating mTORC1-SREBPs and their target genes related to triglyceride and cholesterol synthesis. Furthermore, RYR suppressed hepatic inflammation by inhibiting the NF-κB/NLRP3 inflammasome signaling. Interestingly, the treatment with RYR or MCC950, a specific NLRP3 inhibitor, resulted in the reduced lipid accumulation in HepG2 cells challenged by LPS plus PA, suggesting that the inhibitory effects of RYR on NLRP3 inflammasome-mediated hepatic inflammation may partially, in turn, contribute to the lipid-lowering effect of RYR. CONCLUSIONS The modulation of NF-κB/NLRP3 inflammasome and lipid synthesis may contribute to the ameliorative effects of RYR against HFD-induced NAFLD.
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Affiliation(s)
- Jian Zou
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, Taipa, China
| | - Chunyan Yan
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Jian-Bo Wan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, Taipa, China.
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Modulatory Properties of Food and Nutraceutical Components Targeting NLRP3 Inflammasome Activation. Nutrients 2022; 14:nu14030490. [PMID: 35276849 PMCID: PMC8840562 DOI: 10.3390/nu14030490] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/16/2022] [Accepted: 01/20/2022] [Indexed: 12/27/2022] Open
Abstract
Inflammasomes are key intracellular multimeric proteins able to initiate the cellular inflammatory signaling pathway. NLRP3 inflammasome represents one of the main protein complexes involved in the development of inflammatory events, and its activity has been largely demonstrated to be connected with inflammatory or autoinflammatory disorders, including diabetes, gouty arthritis, liver fibrosis, Alzheimer’s disease, respiratory syndromes, atherosclerosis, and cancer initiation. In recent years, it has been demonstrated how dietary intake and nutritional status represent important environmental elements that can modulate metabolic inflammation, since food matrices are an important source of several bioactive compounds. In this review, an updated status of knowledge regarding food bioactive compounds as NLRP3 inflammasome modulators is discussed. Several chemical classes, namely polyphenols, organosulfurs, terpenes, fatty acids, proteins, amino acids, saponins, sterols, polysaccharides, carotenoids, vitamins, and probiotics, have been shown to possess NLRP3 inflammasome-modulating activity through in vitro and in vivo assays, mainly demonstrating an anti-NLRP3 inflammasome activity. Plant foods are particularly rich in important bioactive compounds, each of them can have different effects on the pathway of inflammatory response, confirming the importance of the nutritional pattern (food model) as a whole rather than any single nutrient or functional compound.
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Luo W, Li L, Xu W, Zhang J, Xu J. Toxic Effects of Docosahexaenoic Acid Treatment in the Rat Liver BRL-3A Cell. TOXICS 2021; 9:toxics9050112. [PMID: 34065295 PMCID: PMC8160770 DOI: 10.3390/toxics9050112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/12/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022]
Abstract
The cytotoxicity of docosahexaenoic acid (DHA) on normal cells is still unclear. This study investigated the effects of DHA on the cytotoxicity and possible mechanism in the BRL-3A cell. The cultured rat liver BRL-3A cell line was treated with 50, 100 and 200 μM DHA for 24 h. The cell viability was increased in the 50 and 100 μM DHA treatments, but decreased in the 200 μM DHA treatment. The 50, 100 and 200 μM DHA treatments increased the proportion of the apoptotic cells, the levels of lactate dehydrogenase (LDH), alkaline phosphatase (AKP) and IL-6 in the supernatant, and the ratio of the phosphonated p38MAPK to the p38MAPK (p-p38/p38) protein in the cells. The expression of TGF beta-activated kinase 1 (TAK1), nuclear transcription factor-κB p65 (NF-κB p65) and the inhibitor of NF-κB alpha (IκBα) mRNA, and the ratio of the phosphonated IκBα (p-IκBα) to IκBα protein were increased in the 200 μM DHA treatment, while the ratio of phosphonated extracellular regulated protein kinases (p-ERK) to ERK protein was decreased in the 200 μM DHA treatment. These results indicate that DHA-treated (50, 100 and 200 μM) BRL-3A cells for 24 h promotes cell apoptosis and inflammatory response, and the p38 MAPK, ERK and NF-κB signal pathways were involved in mediating the apoptosis and inflammatory response.
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Yan H, Ge J, Gao H, Pan Y, Hao Y, Li J. Melatonin attenuates AFB1-induced cardiotoxicity via the NLRP3 signalling pathway. J Int Med Res 2021; 48:300060520952656. [PMID: 33081548 PMCID: PMC7588772 DOI: 10.1177/0300060520952656] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objective This study was conducted to investigate the protective effect of melatonin against aflatoxin B1 (AFB1) cardiotoxicity by evaluating NOD-like receptor family pyrin domain containing protein 3 (NLRP3) signalling. Methods Four groups of five rats each were assessed: control group (vehicle only), two AFB1 (0.15 and 0.3 mg/kg)-treated groups, and a combined AFB1 (0.3 mg/kg) plus melatonin (5 mg/kg)-treated group. After 6 weeks of once-daily intragastric treatment, cardiac pathologic changes were observed under optical microscopy, and oxidative/antioxidative parameters were measured in myocardial homogenate. Cardiac tissue expression of NLRP3 and other important inflammasome components was also analysed. Results Compared with controls, increasing concentrations of AFB1 were associated with increased oxidative stress and caused myocardial structure damage. In addition, AFB1 dose-dependently activated the NLRP3 signalling pathway. All these indices were significantly ameliorated by combined AFB1 plus melatonin treatment versus high-dose AFB1 alone. Conclusion Melatonin may reduce NLRP3 inflammasome activation by inhibiting oxidative stress and thus protect against injury from AFB1-induced myocardial toxicity.
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Affiliation(s)
- Hui Yan
- Department of Cardiology, College of Medical Sciences, Qingdao University, Shandong, China
| | - Junhua Ge
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Shandong, China
| | - Hongrui Gao
- Department of Cardiology, College of Medical Sciences, Qingdao University, Shandong, China
| | - Yang Pan
- Department of Cardiology, College of Medical Sciences, Qingdao University, Shandong, China
| | - Yan Hao
- Department of Cardiology, College of Medical Sciences, Qingdao University, Shandong, China
| | - Jian Li
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Shandong, China
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Li C, Chen M, He X, Ouyang D. A mini-review on ion fluxes that regulate NLRP3 inflammasome activation. Acta Biochim Biophys Sin (Shanghai) 2021; 53:131-139. [PMID: 33355638 DOI: 10.1093/abbs/gmaa155] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Indexed: 12/15/2022] Open
Abstract
The activation of NLR family pyrin domain containing 3 (NLRP3) inflammasome can be induced by a wide spectrum of activators. This is unlikely achieved by the binding of different activators directly to the NLRP3 protein itself, as the activators found so far show different forms of chemical structures. Previous studies have shown that these activators can induce potassium ion (K+) and chloride ion (Cl-) efflux, calcium (Ca2+) and other ion mobilization, mitochondrial dysfunction, and lysosomal disruption, all of which are believed to cause NLRP3 inflammasome activation; how these events are induced by the activators and how they coordinate with each other in inducing the NLRP3 inflammasome activation are not fully understood. Increasing evidence suggests that the coordinated change of intracellular ion concentrations may be a common mechanism for the NLRP3 activation by different activators. In this mini-review, we present a brief summary of the current knowledge about how different ionic flows (including K+, sodium ion, Ca2+, magnesium ion, manganese ion, zinc ion, iron ion, and Cl-) are involved in regulating the NLRP3 inflammasome activation in macrophages.
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Affiliation(s)
- Chenguang Li
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Mingye Chen
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xianhui He
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Dongyun Ouyang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
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Jiang X, Hao J, Liu Z, Ma X, Feng Y, Teng L, Li Y, Wang D. Anti-obesity effects of Grifola frondosa through the modulation of lipid metabolism via ceramide in mice fed a high-fat diet. Food Funct 2021; 12:6725-6739. [PMID: 34160500 DOI: 10.1039/d1fo00666e] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Obesity is characterized by massive fat deposition and is related to a series of metabolic complications, such as insulin resistance (IR) and steatohepatitis. Grifola frondosa (GF) is a basidiomycete fungus and a source of various nutritional ingredients related to human health. In this study, after a systematic analysis of its nutritional ingredients, GF was administered to mice fed a high-fat diet (HFD) to investigate its effects on lipid metabolism. In HFD-fed mice, GF significantly controlled the body weight, blood glucose and related organ indices, and effectively counteracted hyperlipidemia and IR triggered by the HFD. GF administration efficiently alleviated hepatic steatosis and adipocyte hypertrophy, and regulated alanine aminotransferase and aspartate aminotransferase in the liver. An analysis of the intestinal microflora showed that GF reversed obesity-induced dysbiosis by affecting the relative abundance of certain bacteria, reducing lipopolysaccharide production and regulating the superpathway of heme biosynthesis associated with inflammation. According to the results of lipidomics, ceramide, a metabolite related to inflammation and IR, was found to be dysregulated in HFD-fed mice. However, GF regulated the ceramide levels and restored lipid metabolism via the suppression of Toll-like receptor 4/nuclear factor kappa-B signaling, which is involved in inflammation and IR. This study provides the experimental basis for the application of GF as an agent for obesity.
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Affiliation(s)
- Xue Jiang
- School of Life Sciences, Jilin University, Changchun 130012, China.
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Yu JT, Hu XW, Chen HY, Yang Q, Li HD, Dong YH, Zhang Y, Wang JN, Jin J, Wu YG, Li J, Ge JF, Meng XM. DNA methylation of FTO promotes renal inflammation by enhancing m 6A of PPAR-α in alcohol-induced kidney injury. Pharmacol Res 2021; 163:105286. [PMID: 33157234 DOI: 10.1016/j.phrs.2020.105286] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 12/15/2022]
Abstract
Alcohol consumption is one of the risk factors for kidney injury. The underlying mechanism of alcohol-induced kidney injury remains largely unknown. We previously found that the kidney in a mouse model of alcoholic kidney injury had severe inflammation. In this study, we found that the administration of alcohol was associated with the activation of NLRP3 inflammasomes and NF-κB signaling, and the production of pro-inflammatory cytokines. Whole-genome methylation sequencing (WGBS) showed that the DNA encoding fat mass and obesity-associated protein (FTO) was significantly methylated in the alcoholic kidney. This finding was confirmed with the bisulfite sequencing (BSP), which showed that alcohol increased DNA methylation of FTO in the kidney. Furthermore, inhibition of DNA methyltransferases (DNMTs) by 5-azacytidine (5-aza) reversed alcohol-induced kidney injury and decreased the mRNA and protein levels of FTO. Importantly, we found that FTO, the m6A demethylase, epigenetically modified peroxisome proliferator activated receptor-α (PPAR-α) in a YTH domain family 2 (YTHDF2)-dependent manner, which resulted in inflammation in alcoholic kidney injury models. In conclusion, our findings indicate that alcohol increases the methylation of PPAR-α m6A by FTO-mediated YTHDF2 epigenetic modification, which ultimately leads to the activation of NLRP3 inflammasomes and NF-κB-driven renal inflammation in the kidney. These findings may provide novel strategies for preventing and treating alcoholic kidney diseases.
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Affiliation(s)
- Ju-Tao Yu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Xiao-Wei Hu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Hai-Yong Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Qin Yang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Hai-Di Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Yu-Hang Dong
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Yao Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jia-Nan Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Juan Jin
- School of Basic Medicine, Anhui Medical University, Hefei, 230032, China
| | - Yong-Gui Wu
- Department of Nephrology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Jun Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jin-Fang Ge
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China.
| | - Xiao-Ming Meng
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-Inflammatory of Immune Medicines, Ministry of Education, Hefei, 230032, China.
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Zhang J, Zhao R, Xing D, Cao J, Guo Y, Li L, Sun Y, Tian L, Liu M. Magnesium Isoglycyrrhizinate Induces an Inhibitory Effect on Progression and Epithelial-Mesenchymal Transition of Laryngeal Cancer via the NF-κB/Twist Signaling. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:5633-5644. [PMID: 33376307 PMCID: PMC7765753 DOI: 10.2147/dddt.s272323] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022]
Abstract
Background Magnesium isoglycyrrhizinate (MI) was extracted from roots of the plant Glycyrrhiza glabra, which displays multiple pharmacological activities such as anti-inflammation, anti-apoptosis, and anti-tumor. Here, we aimed to investigate the effect of MI on the progression and epithelial–mesenchymal transition (EMT) of laryngeal cancer. Methods Forty laryngeal cancer clinical samples were used. The role of MI in the proliferation of laryngeal cancer cells was assessed by MTT assay, Edu assay and colony formation assay. The function of MI in the migration and invasion of laryngeal cancer cells was tested by transwell assays. The effect of MI on apoptosis of laryngeal cancer cells was determined by cell apoptosis assay. The impact of MI on tumor growth in vivo was analyzed by tumorigenicity analysis using Balb/c nude mice. qPCR and Western blot analysis were performed to measure the expression levels of gene and protein, respectively. Results We identified that EMT-related transcription factor Twist was significantly elevated in the laryngeal cancer tissues. The expression of Twist was also enhanced in the human laryngeal carcinoma HEP-2 cells compared with that in the primary laryngeal epithelial cells. The high expression of Twist was remarkably correlated with poor overall survival of patients with laryngeal cancer. Meanwhile, our data revealed that MI reduced cell proliferation, migration and invasion and enhanced apoptosis of laryngeal cancer cells in vitro. Moreover, MI decreased transcriptional activation and the expression levels of NF-κB and Twist, and alleviated EMT in vitro and in vivo. MI remarkably inhibited tumor growth and EMT of laryngeal cancer cells in vivo. Conclusion MI restrains the progression of laryngeal cancer and induces an inhibitory effect on EMT in laryngeal cancer by modulating the NF-κB/Twist signaling. Our finding provides new insights into the mechanism by which MI inhibits laryngeal carcinoma development, enriching the understanding of the anti-tumor function of MI.
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Affiliation(s)
- Jiarui Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Rui Zhao
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Dongliang Xing
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Jing Cao
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Yan Guo
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Liang Li
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Yanan Sun
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Linli Tian
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
| | - Ming Liu
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin City, Heilongjiang Province 150086, People's Republic of China
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Bo N, Yilin H, Chaoyue Y, Lu L, Yuan Y. Acrylamide induces NLRP3 inflammasome activation via oxidative stress- and endoplasmic reticulum stress-mediated MAPK pathway in HepG2 cells. Food Chem Toxicol 2020; 145:111679. [DOI: 10.1016/j.fct.2020.111679] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/18/2020] [Accepted: 08/04/2020] [Indexed: 02/06/2023]
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Sun X, Tang Y, Jiang C, Luo S, Jia H, Xu Q, Zhao C, Liang Y, Cao Z, Shao G, Loor JJ, Xu C. Oxidative stress, NF-κB signaling, NLRP3 inflammasome, and caspase apoptotic pathways are activated in mammary gland of ketotic Holstein cows. J Dairy Sci 2020; 104:849-861. [PMID: 33131808 DOI: 10.3168/jds.2020-18788] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 08/13/2020] [Indexed: 12/18/2022]
Abstract
Ketosis is a serious metabolic disorder characterized by systemic and hepatic oxidative stress, inflammation, and apoptosis, as well as reduced milk yield. Because of the paucity of data on mammary responses during ketosis, the aim of this study was to evaluate alterations in oxidative stress, NF-κB signaling, NLRP3 inflammasome, and caspase apoptotic pathways in mammary gland of dairy cows with ketosis. Blood, mammary gland tissue, and milk samples were collected from healthy cows [Control, blood concentration of β-hydroxybutyrate (BHB) <0.6 mM, n = 10] and cows with subclinical ketosis (SCK, blood concentration of BHB >1.2 mM and <3 mM, n = 10) or clinical ketosis (CK, blood concentration of BHB >3 mM, n = 10) at median 8 d in milk (range = 6-12). Compared with Control, serum concentration of glucose was lower (3.91 vs. 2.86 or 2.12 mM) in cows with SCK or CK, whereas concentrations of fatty acids (0.25 vs. 0.57 or 1.09 mM) and BHB (0.42 vs. 1.81 or 3.85 mM) were greater. Compared with Control, the percentage of milk fat was greater in cows with SCK or CK. In contrast, the percentage of milk protein was lower in cows with SCK or CK. We detected no differences in milk lactose content across groups. Compared with Control, activities of glutathione peroxidase, superoxide dismutase, and catalase were lower in mammary gland tissue of cows with SCK or CK. In contrast, concentrations of hydrogen peroxide and malondialdehyde were greater in cows with SCK or CK. Compared with Control, mRNA abundances of TNFA, IL6, and IL1B were greater in mammary tissues of cows with SCK or CK. In addition, activity of IKKβ and the ratio of phosphorylated inhibitor of κBα to IκBα, and of phosphorylated NF-κB p65 to NF-κB p65, were also greater in mammary tissues of cows with SCK or CK. Subclinical or clinical ketosis also led to greater activity of caspase 1 and protein abundance of caspase 1, NLRP3, Bax, caspase 3, and caspase 9. In contrast, abundance of the antiapoptotic protein was lower in SCK or CK cows. The data indicate that the mammary gland of SKC or CK cows undergoes severe oxidative stress, inflammation, and cell death.
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Affiliation(s)
- Xudong Sun
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Yan Tang
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Chunhui Jiang
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Shengbin Luo
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Hongdou Jia
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Qiushi Xu
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Chenxu Zhao
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
| | - Yusheng Liang
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801
| | - Zhijun Cao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Guang Shao
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, Heilongjiang Province 161000, China
| | - Juan J Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801
| | - Chuang Xu
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China.
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21
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Li S, Shi M, Wan Y, Wang Y, Zhu M, Wang B, Zhan Y, Ran B, Wu C. Inflammasome/NF-κB translocation inhibition via PPARγ agonist mitigates inorganic mercury induced nephrotoxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110801. [PMID: 32502906 DOI: 10.1016/j.ecoenv.2020.110801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/30/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Mercury (Hg) pollution poses global human health and environmental risks. However, still knowledge gaps exist on both exposures and health effects. Here, we combined transcriptome sequencing technique to further investigate the specific mechanisms of inorganic Hg toxicity in the kidney. Strikingly, transcriptomic analysis revealed that 4174 unigenes (including 2646 upregulated and 1528 downregulated unigenes) were differentially expressed under acute HgCl2 (5 mg/kg) exposure in the kidney. Additionally, we observed that HgCl2 selectively induced tumor necrosis factor superfamily (TNFSF) to participate in renal damage, which was consistent with the high-throughput sequencing data. The phenomenon is accompanied by NLRP3 inflammasome and NF-κB signal activation in the kidney. Simultaneously, ELISA results shown that TNF-α, IL-1β and IL-6 concentrations in the kidney were significant increased. KEGG enrichment analysis showed that peroxisome proliferators-activated receptors (PPAR) signaling pathway might be vital toxic mechanism of Hg in the kidney. Then, our data showed that PPARγ agonist (GW 1929) attenuated HgCl2 (15 μg/ml)-induced apoptosis and NLRP3 inflammasome activation via decreasing translocation of NF-κB and increasing Bcl2 levels in vitro. Along with this, we demonstrated that PPARγ antagonists (GW9662) effectively aggravated HgCl2-induced nephrotoxicity. Overall, our results suggested that PPARγ signaling pathway is considered to be a protective mechanism to combat against HgCl2-triggered NLRP3 inflammasome activation and apoptosis.
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Affiliation(s)
- Siwen Li
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Mei Shi
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Ying Wan
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Yanling Wang
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Mei Zhu
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Boya Wang
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Yangmei Zhan
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Bing Ran
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China
| | - Chunling Wu
- College of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, Sichuan Province, PR China.
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22
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Jiang S, Xiao H, Wu Z, Yang Z, Ding B, Jin Z, Yang Y. NLRP3 sparks the Greek fire in the war against lipid-related diseases. Obes Rev 2020; 21:e13045. [PMID: 32390276 DOI: 10.1111/obr.13045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 03/30/2020] [Indexed: 12/11/2022]
Abstract
In recent years, the obesity rate worldwide has reached epidemic proportions and contributed to the growing prevalence of lipid-related diseases. A strong link between inflammation and metabolism is becoming increasingly evident. Compelling evidence has indicated the activation of the nucleotide-binding and oligomerization domain-like receptor, leucine-rich repeat and pyrin domain-containing 3 (NLRP3) inflammasome, a cytoplasmic complex containing multiple proteins, in a variety of lipid-related diseases including obesity, atherosclerosis, liver diseases, and type 2 diabetes. Recent studies have further clarified the regulatory mechanisms and the optional therapeutic agents that target NLRP3 inflammasomes. In this study, we review the recent progress in the research on NLRP3 inflammasomes and discuss their implications for a better understanding of inflammation in lipid-related disease and the prospects of targeting the NLRP3 inflammasome for therapeutic intervention.
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Affiliation(s)
- Shuai Jiang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Life of Sciences, Northwest University, Xi'an, China
| | - Haoxiang Xiao
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhen Wu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Life of Sciences, Northwest University, Xi'an, China
| | - Zhi Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Life of Sciences, Northwest University, Xi'an, China
| | - Baoping Ding
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Life of Sciences, Northwest University, Xi'an, China
| | - Zhenxiao Jin
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yang Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Life of Sciences, Northwest University, Xi'an, China
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23
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Gao Y, Tian Y, Zhang X, Zhang X, Duan Z, Ren F, Chen Y. Magnesium isoglycyrrhizinate ameliorates concanavalin A-induced liver injury via the p38 and JNK MAPK pathway. Immunopharmacol Immunotoxicol 2020; 42:445-455. [PMID: 32787473 DOI: 10.1080/08923973.2020.1808984] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CONTEXT Acute liver failure is a serious disease caused by a variety of factors, and immunological injury is an important pathological process. Comprehensive liver treatment efficacy is poor, and the mortality rate is high. Magnesium isoglycyrrhizinate (MgIG) is a new glycyrrhizin drug extracted from the traditional Chinese medicine licorice. The mechanism by which MgIG regulates ConcanavalinA (ConA)-induced immunological liver injury in mice is not completely clear. MATERIALS AND METHODS Immunological liver injury was induced in mice by ConA injection, and the inflammatory macrophages model was induced by lipopolysaccharide (LPS). MgIG was administered 30 min prior to ConA and LPS treatment. The mice in the different groups were sacrificed 12 h after treatment, and macrophages were measured at 30 min, 1 h, and 2 h after induction. Macrophages, liver, and blood samples were then collected for analysis. RESULTS After drug administration, the MgIG group showed a marked decrease in serum transaminase levels, reduced apoptosis and hepatic inflammatory responses compared to the ConA group. Furthermore, there was a significant reduction in inflammatory cytokine levels in the serum and liver tissue. In vitro, the expression of inflammatory cytokines was distinctly reduced after MgIG administration. In addition, MgIG pretreatment reduced the expression of inflammatory cytokines and regulated the phosphorylation of p38 and JNK proteins in the MAPK pathway. CONCLUSION These findings demonstrated that MgIG protects against ConA-induced immunological liver injury by markedly alleviating liver inflammation, and this provides guidance for the clinical amelioration of liver inflammation induced by immunological factors.
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Affiliation(s)
- Yudi Gao
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing, China
| | - Yuan Tian
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Xiangying Zhang
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Xiaohui Zhang
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing, China
| | - Zhongping Duan
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing, China
| | - Feng Ren
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Yu Chen
- Difficult and Complicated Liver Diseases and Artificial Liver Center, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing, China
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24
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Yang YZ, Liu ZH, Wang SC, Zhang XQ, Xu HJ, Yang L, Kong LD. Magnesium isoglycyrrhizinate alleviates fructose-induced liver oxidative stress and inflammatory injury through suppressing NOXs. Eur J Pharmacol 2020; 883:173314. [PMID: 32619679 DOI: 10.1016/j.ejphar.2020.173314] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 12/30/2022]
Abstract
Excessive fructose intake is a risk factor for liver oxidative stress injury. Magnesium isoglycyrrhizinate as a hepatoprotective agent is used to treat liver diseases in clinic. However, its antioxidant effects and the underlying potential mechanisms are still not clearly understood. In this study, magnesium isoglycyrrhizinate was found to alleviate liver oxidative stress and inflammatory injury in fructose-fed rats. Magnesium isoglycyrrhizinate suppressed hepatic reactive oxygen species overproduction (0.97 ± 0.04 a.u. versus 1.34 ± 0.07 a.u.) in fructose-fed rats by down-regulating mRNA and protein levels of nicotinamide adenine dinucleotide phosphate oxidase (NOX) 1, NOX2 and NOX4, resulting in reduction of interleukin-1β (IL-1β) levels (1.13 ± 0.09 a.u. versus 1.97 ± 0.12 a.u.). Similarly, magnesium isoglycyrrhizinate reduced reactive oxygen species overproduction (1.07 ± 0.02 a.u. versus 1.35 ± 0.06 a.u.) and IL-1β levels (1.14 ± 0.09 a.u. versus 1.66 ± 0.07 a.u.) in fructose-exposed HepG2 cells. Furthermore, data from treatment of reactive oxygen species inhibitor N-acetyl-L-cysteine or NOXs inhibitor diphenyleneiodonium in fructose-exposed HepG2 cells showed that fructose enhanced NOX1, NOX2 and NOX4 expression to increase reactive oxygen species generation, causing oxidative stress and inflammation, more importantly, these disturbances were significantly attenuated by magnesium isoglycyrrhizinate. The molecular mechanisms underpinning these effects suggest that magnesium isoglycyrrhizinate may inhibit NOX1, NOX2 and NOX4 expression to reduce reactive oxygen species generation, subsequently prevent liver oxidative stress injury under high fructose condition. Thus, the blockade of NOX1, NOX2 and NOX4 expression by magnesium isoglycyrrhizinate may be the potential therapeutic approach for improving fructose-induced liver injury in clinic.
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Affiliation(s)
- Yan-Zi Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, PR China
| | - Zhi-Hong Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, PR China
| | - Shan-Chun Wang
- Jiangsu Key Laboratory of Targeted Antiviral Research, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing, 210023, PR China
| | - Xi-Quan Zhang
- Jiangsu Key Laboratory of Targeted Antiviral Research, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing, 210023, PR China
| | - Hong-Jiang Xu
- Jiangsu Key Laboratory of Targeted Antiviral Research, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing, 210023, PR China
| | - Ling Yang
- Jiangsu Key Laboratory of Targeted Antiviral Research, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing, 210023, PR China.
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, PR China.
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25
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Hou Y, Gu D, Peng J, Jiang K, Li Z, Shi J, Yang S, Li S, Fan X. Ginsenoside Rg1 Regulates Liver Lipid Factor Metabolism in NAFLD Model Rats. ACS OMEGA 2020; 5:10878-10890. [PMID: 32455208 PMCID: PMC7241038 DOI: 10.1021/acsomega.0c00529] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/23/2020] [Indexed: 05/11/2023]
Abstract
To establish the molecular mechanism of ginsenoside Rg1 in nonalcoholic fatty liver disease (NAFLD), Sprague Dawley (SD) rats (180-220 g) were randomly divided into a control group, model group, ginsenoside Rg1 low-dose group (30 mg/(kg day)), high-dose (60 mg/(kg day)) group, and simvastatin group (1 mg/(kg day)), with 10 SD rats in each group. The control group was given a normal diet. The model group rats were given high-sugar and high-fat diets for 14 weeks. After the model of NAFLD was established successfully, ginsenoside Rg1 was administered orally for 4 or 8 weeks. The results showed that ginsenoside Rg1 decreased the levels of glucose (GLU), insulin (INS), triglyceride (TG), and total cholesterol (TC) and improved liver function. Meanwhile, ginsenoside Rg1 inhibited the secretion of interleukin-1 (IL-1), IL-6, IL-8, IL-18, and tumor necrosis factor-α (TNF-α) and improved hepatocyte morphology and lipid accumulation in the liver. Furthermore, ginsenoside Rg1 promoted the expression of peroxisome proliferator-activated receptor-α (PPAR-α), carnitine palmitoyl transferase 1α (CPT1A), carnitine palmitoyl transferase 2 (CPT2), and cholesterol 7α-hydroxylase (CYP-7A) and inhibited the expression of sterol regulatory element binding proteins-1C (SREBP-1C). In conclusion, ginsenoside Rg1 can inhibit inflammatory reaction, regulate lipid metabolism, and alleviate liver injury in NAFLD model rats.
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Affiliation(s)
- Yunhe Hou
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
- Department
of Human Anatomy, College of Basic Medical Sciences, Guilin Medical University, Guilin, Guangxi Zhuang Autonomous Region 541004, P. R. China
- Department
of Chemical Engineering and Industrial Biotechnology, School of Food
Engineering, Qingdao Institute of Technology, Qingdao, Shandong 266300, P. R. China
- Yunnan Province
Key Laboratory for Nutrition and Food Safety in Universities, Kunming, Yunnan 650500, P. R. China
| | - Danshan Gu
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
- Yunnan Province
Key Laboratory for Nutrition and Food Safety in Universities, Kunming, Yunnan 650500, P. R. China
| | - Jianzhi Peng
- Department
of Nutrition, The Second Affiliated Hospital
of Kunming Medical University, Kunming, Yunnan 650101, P. R. China
| | - Kerong Jiang
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
| | - Zhigang Li
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
| | - Jing Shi
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
| | - Shikun Yang
- Organ
Transplantation Center, The First Affiliated
Hospital of Kunming Medical University, Kunming, Yunnan 650031, P. R. China
| | - Shude Li
- Department
of Biochemistry and Molecular Biology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P. R. China
- Yunnan Province
Key Laboratory for Nutrition and Food Safety in Universities, Kunming, Yunnan 650500, P. R. China
| | - Xiaoming Fan
- Department
of Human Anatomy, College of Basic Medical Sciences, Guilin Medical University, Guilin, Guangxi Zhuang Autonomous Region 541004, P. R. China
- . Tel: +86 15738723256
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26
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Rios FJ, Zou ZG, Harvey AP, Harvey KY, Nosalski R, Anyfanti P, Camargo LL, Lacchini S, Ryazanov AG, Ryazanova L, McGrath S, Guzik TJ, Goodyear CS, Montezano AC, Touyz RM. Chanzyme TRPM7 protects against cardiovascular inflammation and fibrosis. Cardiovasc Res 2020; 116:721-735. [PMID: 31250885 PMCID: PMC7252442 DOI: 10.1093/cvr/cvz164] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 05/07/2019] [Accepted: 06/26/2019] [Indexed: 12/12/2022] Open
Abstract
AIMS Transient Receptor Potential Melastatin 7 (TRPM7) cation channel is a chanzyme (channel + kinase) that influences cellular Mg2+ homeostasis and vascular signalling. However, the pathophysiological significance of TRPM7 in the cardiovascular system is unclear. The aim of this study was to investigate the role of this chanzyme in the cardiovascular system focusing on inflammation and fibrosis. METHODS AND RESULTS TRPM7-deficient mice with deletion of the kinase domain (TRPM7+/Δkinase) were studied and molecular mechanisms investigated in TRPM7+/Δkinase bone marrow-derived macrophages (BMDM) and co-culture systems with cardiac fibroblasts. TRPM7-deficient mice had significant cardiac hypertrophy, fibrosis, and inflammation. Cardiac collagen and fibronectin content, expression of pro-inflammatory mediators (SMAD3, TGFβ) and cytokines [interleukin (IL)-6, IL-10, IL-12, tumour necrosis factor-α] and phosphorylation of the pro-inflammatory signalling molecule Stat1, were increased in TRPM7+/Δkinase mice. These processes were associated with infiltration of inflammatory cells (F4/80+CD206+ cardiac macrophages) and increased galectin-3 expression. Cardiac [Mg2+]i, but not [Ca2+]i, was reduced in TRPM7+/Δkinase mice. Calpain, a downstream TRPM7 target, was upregulated (increased expression and activation) in TRPM7+/Δkinase hearts. Vascular functional and inflammatory responses, assessed in vivo by intra-vital microscopy, demonstrated impaired neutrophil rolling, increased neutrophil: endothelial attachment and transmigration of leucocytes in TRPM7+/Δkinase mice. TRPM7+/Δkinase BMDMs had increased levels of galectin-3, IL-10, and IL-6. In co-culture systems, TRPM7+/Δkinase macrophages increased expression of fibronectin, proliferating cell nuclear antigen, and TGFβ in cardiac fibroblasts from wild-type mice, effects ameliorated by MgCl2 treatment. CONCLUSIONS We identify a novel anti-inflammatory and anti-fibrotic role for TRPM7 and suggest that its protective effects are mediated, in part, through Mg2+-sensitive processes.
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Affiliation(s)
- Francisco J Rios
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Zhi-Guo Zou
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Adam P Harvey
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Katie Y Harvey
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Ryszard Nosalski
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Panagiota Anyfanti
- 3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Livia L Camargo
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Silvia Lacchini
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Alexey G Ryazanov
- Department of Pharmacology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Lillia Ryazanova
- Lewis Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Sarah McGrath
- Centre of Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Tomasz J Guzik
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Carl S Goodyear
- Centre of Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Augusto C Montezano
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
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27
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Jin L, Chen C, Li Y, Yuan F, Gong R, Wu J, Zhang H, Kang B, Yuan G, Zeng H, Chen T. A Biodegradable Mg-Based Alloy Inhibited the Inflammatory Response of THP-1 Cell-Derived Macrophages Through the TRPM7-PI3K-AKT1 Signaling Axis. Front Immunol 2019; 10:2798. [PMID: 31849975 PMCID: PMC6902094 DOI: 10.3389/fimmu.2019.02798] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 11/14/2019] [Indexed: 12/16/2022] Open
Abstract
Mg-based alloys might be ideal biomaterials in clinical applications owing to favorable mechanical properties, biodegradability, biocompatibility, and especially their anti-inflammatory properties. However, the precise signaling mechanism underlying the inhibition of inflammation by Mg-based alloys has not been elucidated. Here, we investigated the effects of a Mg-2.1Nd-0.2Zn-0.5Zr alloy (denoted as JDBM) on lipopolysaccharide (LPS)-induced macrophages. THP-1 cell-derived macrophages were cultured on JDBM, Ti-6Al-4V alloy (Ti), 15% extract of JDBM, and 7.5 mM of MgCl2 for 1 h before the addition of LPS for an indicated time; the experiments included negative and positive controls. Our results showed JDBM, extract, and MgCl2 could decrease LPS-induced tumor necrosis factor (TNF) and interleukin (IL)-6 expression. However, there were no morphologic changes in macrophages on Ti or JDBM. Mechanically, extract and MgCl2 downregulated the expression of toll-like receptor (TLR)-4 and MYD88 compared with the positive control and inhibited LPS-induced nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways by inactivation of the phosphorylation of IKK-α/β, IKβ-α, P65, P38, and JNK. Additionally, the LPS-induced reactive oxygen species (ROS) expression was also decreased by extract and MgCl2. Interestingly, the expression of LPS-induced TNF and IL-6 could be recovered by knocking down TRPM7 of macrophages, in the presence of extract or MgCl2. Mechanically, the activities of AKT and AKT1 were increased by extract or MgCl2 with LPS and were blocked by a PI3K inhibitor, whereas siRNA TRPM7 inhibited only AKT1. Together, our results demonstrated the degradation products of Mg-based alloy, especially magnesium, and resolved inflammation by activation of the TRPM7-PI3K-AKT1 signaling pathway, which may be a potential advantage or target to promote biodegradable Mg-based alloy applications.
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Affiliation(s)
- Liang Jin
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
- Division of Immunology, Shanghai Children's Medical Center, Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chenxin Chen
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
| | - Yutong Li
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Yuan
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
| | - Ruolan Gong
- Division of Immunology, Shanghai Children's Medical Center, Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Allergy and Immunology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Wu
- Division of Immunology, Shanghai Children's Medical Center, Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Zhang
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
| | - Bin Kang
- Department of Orthopaedics, Peking University Shenzhen Hospital of Medicine, Shenzhen, China
| | - Guangyin Yuan
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- State Key Laboratory of Metal Matrix Composite, National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, China
| | - Hui Zeng
- Department of Orthopaedics, Peking University Shenzhen Hospital of Medicine, Shenzhen, China
| | - Tongxin Chen
- Division of Immunology, Shanghai Children's Medical Center, Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Allergy and Immunology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Lin R, Jia Y, Wu F, Meng Y, Sun Q, Jia L. Combined Exposure to Fructose and Bisphenol A Exacerbates Abnormal Lipid Metabolism in Liver of Developmental Male Rats. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214152. [PMID: 31661889 PMCID: PMC6862621 DOI: 10.3390/ijerph16214152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022]
Abstract
The aim of this study was to investigate whether combined exposure to fructose and bisphenol A (BPA) has a synergistic effect on abnormal lipid metabolism in the liver of developmental male rats and its possible mechanism. Fifty weaned male Wistar rats were divided into five groups: the control, 13% fructose, 20% fructose, 1 µg/mL BPA, and 13% fructose + 1 µg/mL BPA (combined exposure). Rats were exposed to fructose and/or BPA through drinking water for eight weeks. Genes or proteins regulating lipid metabolism include sterol regulatory element binding protein 1 (SREBP1), adipose triglyceride lipase (ATGL), hormone sensitive lipase (HSL), acetyl-CoA carboxylase 1 (ACC1), fatty acid synthase (FAS), zinc α 2 glycoprotein (ZAG) and estrogen receptor α (ERα), and the expression of proteins regulating inflammatory response, such as TLR4 and NF-κB, were determined. Serum total cholesterol (T-CHO), triglyceride (TG), low, high density lipoprotein cholesterol (LDL-C, HDL-C), blood glucose, insulin, IL-17 and TNF-α levels were also measured. Liver tissue morphology was observed by H&E staining. The results showed that the levels of gene and protein catalyzing lipogenesis were increased (SREBP1, ACC1 and FAS), while those catalyzing lipolysis were decreased (ATGL, HSL and ZAG), accompanied by dyslipidemia, insulin resistance and hepatic fat accumulation, and there were higher expression of TLR4 and NF-κB protein and lower expression of ERα protein in liver, and increased serum IL-17 and TNF-α levels in fructose and/or BPA exposed rats compared with controls. Moreover, the above indicators were more serious in combined exposure group than in single exposure group. Therefore, abnormal lipid metabolism in the liver of developmental rats could be exacerbated by combined exposed to fructose and BPA.
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Affiliation(s)
- Ren Lin
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Yue Jia
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Fengjuan Wu
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Yuan Meng
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Qi Sun
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Lihong Jia
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
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Zhao XJ, Chen L, Zhao Y, Pan Y, Yang YZ, Sun Y, Jiao RQ, Kong LD. Polygonum cuspidatum extract attenuates fructose-induced liver lipid accumulation through inhibiting Keap1 and activating Nrf2 antioxidant pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 63:152986. [PMID: 31310912 DOI: 10.1016/j.phymed.2019.152986] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 06/04/2019] [Accepted: 06/08/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Polygonum cuspidatum has been used in traditional Chinese medicine to treat liver disorders associated with oxidative stress, inflammation and lipid accumulation for centuries in patients. PURPOSE The aim of this study was to examine whether P. cuspidatum extract (PCE) prevented against fructose-induced liver lipid accumulation via regulating Kelch-like ECH-associated protein 1 (Keap1)/nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. METHOD PCE was administered orally to male Sprague-Dawley rats given 10% fructose drinking water for 6 weeks at 80 and 160 mg/kg once daily for 11 weeks. RESULTS PCE significantly alleviated liver lipid accumulation in fructose-fed rats with metabolic syndrome. It also inhibited Keap1, activated Nrf2 antioxidant pathway, resulting in the suppression of oxidative stress, evidenced by reducing hydrogen peroxide (H2O2), malondialdehyde (MDA) and hydroxy radical (OH•) levels, and increasing glutathione (GSH)/oxidized glutathione (GSSG) ratio as well as superoxidase dismutase (SOD) and catalase (CAT) activity in the liver of fructose-fed rats. Additionally, PCE up-regulated peroxisome proliferator activated receptor-α (PPAR-α), and down-regulated sterol regulatory element binging protein 1 (SREBP-1), fatty acid synthetase (FAS) and stearoyl-CoA desaturase-1 (SCD-1) in this animal model, being consistent with its reduction of triglyceride (TG) levels. CONCLUSION These results demonstrate that PCE reduces oxidative stress, and prevent lipid accumulation in the liver of fructose-fed rats possibly by targeting the Keap1/Nrf2 pathway. PCE may be a promising therapeutic strategy for fructose-associated liver lipid accumulation.
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Affiliation(s)
- Xiao-Juan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Li Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yue Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Ying Pan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yan-Zi Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yang Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Rui-Qing Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
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Shen T, Li X, Loor JJ, Zhu Y, Du X, Wang X, Xing D, Shi Z, Fang Z, Li X, Liu G. Hepatic nuclear factor kappa B signaling pathway and NLR family pyrin domain containing 3 inflammasome is over-activated in ketotic dairy cows. J Dairy Sci 2019; 102:10554-10563. [PMID: 31495623 DOI: 10.3168/jds.2019-16706] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/03/2019] [Indexed: 12/12/2022]
Abstract
Ketosis is an important metabolic disease that can negatively affect the production efficiency of dairy cows. Earlier studies have revealed metabolic and inflammatory alterations in the blood associated with ketosis; however, a link between ketosis and hepatic inflammation has not been well documented. The objective of this study was to investigate whether the nuclear factor kappa B (NF-κB) signaling pathway and NLR family pyrin domain containing 3 (NLRP3) inflammasome were activated in the liver of ketotic cows. Liver and blood samples were collected from healthy (n = 15, control group) and ketotic (n = 15, ketosis group) cows that had a similar number of lactations (median = 3, range = 2 to 4) and days in milk (median = 6 d, range = 3 to 9 d). Results showed that serum levels of fatty acids, β-hydroxybutyrate (BHB), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) were higher and glucose was lower in ketotic cows. Concentrations of serum proinflammatory cytokines IL18, tumor necrosis factor (TNF)-α, and IL1B were greater and the anti-inflammatory cytokine IL10 was lower in the ketosis group. Cows with ketosis had triacylglycerol accumulation in the liver. Upregulation of phosphorylated (p)-NF-κB and p-inhibitor of κB (IκB)α protein abundance in cows with ketosis indicated that the hepatic NF-κB signaling pathway was overactivated. The mRNA abundance of TNFA, inducible nitric oxide synthase (NOS2), IL18, and IL1B were greater and IL10 was lower in ketotic cows. More importantly, the mRNA and protein abundance of NLRP3 and caspase-1 (CASP1) along with CASP1 activity were greater in the liver of cows with ketosis. Overall, the data indicate that the onset of ketosis is accompanied by activation of the NF-κB signaling pathway and NLRP3 inflammasome, resulting in a state of inflammation.
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Affiliation(s)
- Taiyu Shen
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Xinwei Li
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Juan J Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801
| | - Yiwei Zhu
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Xiliang Du
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Xinghui Wang
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Dongmei Xing
- Animal Medicine College, Hunan Agriculture University, Changsha, Hunan, 410128, China
| | - Zhen Shi
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Zhiyuan Fang
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Xiaobing Li
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China
| | - Guowen Liu
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xi'an Road, Changchun, Jilin Province, 130062, China.
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Li TS, Chen L, Wang SC, Yang YZ, Xu HJ, Gu HM, Zhao XJ, Dong P, Pan Y, Shang ZQ, Zhang XQ, Kong LD. Magnesium isoglycyrrhizinate ameliorates fructose-induced podocyte apoptosis through downregulation of miR-193a to increase WT1. Biochem Pharmacol 2019; 166:139-152. [DOI: 10.1016/j.bcp.2019.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/08/2019] [Indexed: 02/07/2023]
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Sun P, Sun N, Yin W, Sun Y, Fan K, Guo J, Khan A, He Y, Li H. Matrine inhibits IL-1β secretion in primary porcine alveolar macrophages through the MyD88/NF-κB pathway and NLRP3 inflammasome. Vet Res 2019; 50:53. [PMID: 31300043 PMCID: PMC6626430 DOI: 10.1186/s13567-019-0671-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/22/2019] [Indexed: 01/15/2023] Open
Abstract
Our previous studies demonstrated that matrine directly acts on the replication process of porcine reproductive and respiratory syndrome virus (PRRSV). Matrine inhibits viral replication and is also associated with the NF-κB signalling pathway. These results suggest that matrine has antiviral and anti-inflammatory effects. However, the specific anti-inflammatory mechanism of matrine is still unclear. In this study, we investigated the anti-IL-1β mechanism of matrine, as IL-1β is a major inflammatory cytokine, in porcine alveolar macrophages (PAMs) stimulated with 4 μg PRRSV 5′-untranslated region (UTR) RNA and 1 μg/mL LPS. After 5′UTR RNA and LPS co-stimulation of PAMs for 12 h, the expression of IL-1β, IL-6, IL-8 and TNF-α was significantly increased. The results also showed that co-stimulation induced the expression of MyD88, and activated the NF-κB signalling pathway and NLRP3 inflammasome. Furthermore, matrine treatment downregulated MyD88, NLRP3 and caspase-1 expression, inhibited ASC speck formation, suppressed IκBα phosphorylation, and interfered with the translocation of NF-κB from the cytoplasm to the nucleus. These results suggest that matrine plays an important role in PAMs co-stimulated with PRRSV 5′UTR RNA and LPS via its effect on NF-κB and the NLRP3 inflammasome. These findings lay the foundation for the exploration of the clinical application of matrine in PRRSV disease.
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Affiliation(s)
- Panpan Sun
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China.,School of Life Science and Engineering, Foshan University, Foshan, 528000, Guangdong, People's Republic of China
| | - Na Sun
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Wei Yin
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Yaogui Sun
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Kuohai Fan
- Laboratory Animal Center, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Jianhua Guo
- Department of Veterinary Pathobiology, Schubot Exotic Bird Health Center, Texas A&M University, College Station, TX, 77843, USA
| | - Ajab Khan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Yongming He
- School of Life Science and Engineering, Foshan University, Foshan, 528000, Guangdong, People's Republic of China.
| | - Hongquan Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China.
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Yang YZ, Zhao XJ, Xu HJ, Wang SC, Pan Y, Wang SJ, Xu Q, Jiao RQ, Gu HM, Kong LD. Magnesium isoglycyrrhizinate ameliorates high fructose-induced liver fibrosis in rat by increasing miR-375-3p to suppress JAK2/STAT3 pathway and TGF-β1/Smad signaling. Acta Pharmacol Sin 2019; 40:879-894. [PMID: 30568253 DOI: 10.1038/s41401-018-0194-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 11/08/2018] [Indexed: 12/26/2022] Open
Abstract
Increasing evidence has demonstrated that excessive fructose intake induces liver fibrosis. Epithelial-mesenchymal transition (EMT) driven by transforming growth factor-β1 (TGF-β1)/mothers against decapentaplegic homolog (Smad) signaling activation promotes the occurrence and development of liver fibrosis. Magnesium isoglycyrrhizinate is clinically used as a hepatoprotective agent to treat liver fibrosis, but its underlying molecular mechanism has not been identified. Using a rat model, we found that high fructose intake reduced microRNA (miR)-375-3p expression and activated the janus-activating kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) cascade and TGF-β1/Smad signaling, which is consistent with the EMT and liver fibrosis. To further verify these observations, BRL-3A cells and/or primary rat hepatocytes were exposed to high fructose and/or transfected with a miR-375-3p mimic or inhibitor or treated with a JAK2 inhibitor, and we found that the low expression of miR-375-3p could induce the JAK2/STAT3 pathway to activate TGF-β1/Smad signaling and promote the EMT. Magnesium isoglycyrrhizinate was found to ameliorate high fructose-induced EMT and liver fibrosis in rats. More importantly, magnesium isoglycyrrhizinate increased miR-375-3p expression to suppress the JAK2/STAT3 pathway and TGF-β1/Smad signaling in these animal and cell models. This study provides evidence showing that magnesium isoglycyrrhizinate attenuates liver fibrosis associated with a high fructose diet.
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Zhou W, Guo R, Guo W, Hong J, Li L, Ni L, Sun J, Liu B, Rao P, Lv X. Monascus yellow, red and orange pigments from red yeast rice ameliorate lipid metabolic disorders and gut microbiota dysbiosis in Wistar rats fed on a high-fat diet. Food Funct 2019; 10:1073-1084. [PMID: 30720827 DOI: 10.1039/c8fo02192a] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
This study aimed to compare the hypolipidaemic activities of different Monascus pigments (yellow, red and orange pigments) and elucidate their possible regulatory mechanisms on lipid and cholesterol metabolism in rats fed on a high-fat diet (HFD). Results showed that oral administrations of Monascus yellow, red and orange pigments can markedly alleviate the disturbance of lipid metabolism through ameliorating the serum lipid levels and suppressing hepatic lipid accumulation and steatosis. Meanwhile, the excretion of fecal cholesterol, triacylglycerols and bile acids was also promoted by the oral administrations of different Monascus pigments (MPs). Furthermore, Monascus pigment (MP) supplementation produced significant structural changes in the intestinal microbiota of HFD-fed rats, and modulated the relative abundance of functionally related microbial phylotypes compared with the HFD group in particular. Key phylotypes in response to the HFD and Monascus pigment (MP) intervention were found to strongly correlate with the lipid metabolism disorder associated parameters using Spearman's correlation coefficient. Some beneficial gut microbiota (such as Oscillibacter sp., Ruminococcus albus, Clostridium sp., etc.) were found to be negatively correlated with the serum and hepatic lipid indicator. Moreover, Monascus pigment (MP) treatments regulated the mRNA expression levels of the genes responsible for lipid and cholesterol metabolism. In general, different Monascus pigments (MPs) regulate the homeostasis of lipid and cholesterol metabolism through different regulatory pathways. These findings illustrated that not only Monascus yellow pigments, but also Monascus red and orange pigments have the potential to ameliorate lipid metabolic disorders, and therefore could be used as potential functional food ingredients for the prevention or treatment of hyperlipidemia and gut microbiota dysbiosis.
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Affiliation(s)
- Wenbin Zhou
- Institute of Food Science and Technology, College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian 350108, P. R. China.
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Song L, Chen TY, Zhao XJ, Xu Q, Jiao RQ, Li JM, Kong LD. Pterostilbene prevents hepatocyte epithelial-mesenchymal transition in fructose-induced liver fibrosis through suppressing miR-34a/Sirt1/p53 and TGF-β1/Smads signalling. Br J Pharmacol 2019; 176:1619-1634. [PMID: 30632134 DOI: 10.1111/bph.14573] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 10/22/2018] [Accepted: 11/06/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND AND PURPOSE Excessive fructose consumption is a risk factor for liver fibrosis. Pterostilbene protects against liver fibrosis. Here, we investigated the potential role and the mechanisms underlying the hepatocyte epithelial-mesenchymal transition (EMT) in fructose-induced liver fibrosis and protection by pterostilbene. EXPERIMENTAL APPROACH Characteristic features of liver fibrosis in 10% fructose-fed rats and EMT in 5 mM fructose-exposed BRL-3A cells with or without pterostilbene and the change of miR-34a/Sirt1/p53 and transforming growth factor-β1 (TGF-β1)/Smads signalling were examined. MiR-34a inhibitor, miR-34a minic, or p53 siRNA were used to explore the role of miR-34a/Sirt1/p53 signalling in fructose-induced EMT and the action of pterostilbene. KEY RESULTS Pterostilbene prevented fructose-induced liver injury with fibrosis in rats. Fructose caused hepatocyte undergoing EMT, gaining fibroblast-specific protein 1 and vimentin, and losing E-cadherin, effects attenuated by pterostilbene. Moreover, fructose induced miR-34a overexpression in hepatocytes with down-regulated Sirt1, increased p53 and ac-p53, and activated TGF-β1/Smads signalling, whereas these disturbances were suppressed by miR-34a inhibitor. Additionally, miR-34a inhibitor and p53 siRNA prevented TGF-β1-driven hepatocyte EMT under fructose exposure. Pterostilbene down-regulated miR-34a, up-regulated Sirt1, and suppressed p53 activation and TGF-β1/Smads signalling in fructose-stimulated animals and cells but showed no additional effects with miR-34a inhibitor on miR-34a/Sirt1/p53 signalling in fructose-exposed hepatocytes. CONCLUSIONS AND IMPLICATIONS These results strongly suggest that activation of miR-34a/Sirt1/p53 signalling is required for fructose-induced hepatocyte EMT mediated by TGF-β1/Smads signalling, contributing to liver fibrosis in rats. Pterostilbene exhibits a protective effect against liver fibrosis at least partly through inhibiting miR-34a/Sirt1/p53 signalling activation.
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Affiliation(s)
- Lin Song
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Tian-Yu Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.,State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiao-Juan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Rui-Qing Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Jian-Mei Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
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Cao Y, Shi H, Sun Z, Wu J, Xia Y, Wang Y, Wu Y, Li X, Chen W, Wang A, Lu Y. Protective Effects of Magnesium Glycyrrhizinate on Methotrexate-Induced Hepatotoxicity and Intestinal Toxicity May Be by Reducing COX-2. Front Pharmacol 2019; 10:119. [PMID: 30971913 PMCID: PMC6444054 DOI: 10.3389/fphar.2019.00119] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 01/31/2019] [Indexed: 12/18/2022] Open
Abstract
Magnesium isoglycyrrhizinate (MgIG), which has been widely employed to treat chronic hepatitis, is synthesized from 18-β glycyrrhizic acid, a main component of traditional Chinese medicine Glycyrrhiza uralensis Fisch. Although the protective effects of MgIG on methotrexate (MTX)-induced liver toxicity have been well-documented, the underlying mechanism remains elusive. MTX was initially used to treat pediatric acute leukemia, and has been widely applied to psoriasis therapy. However, its clinical applications are limited due to hepatotoxicity and intestinal toxicity. Herein, prophylactic administration of MgIG (9 and 18 mg/kg/day) significantly reduced the levels of aspartate aminotransferase and alanine aminotransferase in the serum of rats receiving intravenous injection of MTX (20 mg/kg body weight). MgIG also attenuated MTX-induced hepatic fibrosis. Moreover, it better protected against MTX-induced hepatocyte apoptosis and decreased the serum level of malondialdehyde than reduced glutathione (80 mg/kg/day) did. Interestingly, MTX-induced cyclooxygenase-2 (COX-2) expression, intestinal permeability and inflammation were attenuated after MgIG administration. In addition, MgIG (9 and 18 mg/kg) reduced MTX-induced colocalization of zonula occludens-1 (ZO-1) and connexin 43 (Cx43) in intestinal villi. In conclusion, MgIG exerted beneficial effects on MTX-induced hepatotoxicity and intestinal damage, as a potentially eligible drug for alleviating the hepatic and intestinal side effects of MTX during chemotherapy.
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Affiliation(s)
- Yuzhu Cao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hang Shi
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhiguang Sun
- Department of The First College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiawei Wu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yawen Xia
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yufei Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuanyuan Wu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaoman Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wenxing Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing, China
| | - Aiyun Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yin Lu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing, China
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37
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Gu TT, Chen TY, Yang YZ, Zhao XJ, Sun Y, Li TS, Zhang DM, Kong LD. Pterostilbene alleviates fructose-induced renal fibrosis by suppressing TGF-β1/TGF-β type I receptor/Smads signaling in proximal tubular epithelial cells. Eur J Pharmacol 2019; 842:70-78. [DOI: 10.1016/j.ejphar.2018.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/30/2018] [Accepted: 10/10/2018] [Indexed: 12/14/2022]
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Wang Z, Yang Y, Zhang F, Li M, Chen J, Man H, Jiang W, Zhang R, Gao S, Chen W. A direct, sensitive and efficient method for determination of alpha-fluoro-beta-alanine in urine: Evaluating the influence of magnesium isoglycyrrhizinate on excretion in rat model. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1102-1103:17-22. [PMID: 30366208 DOI: 10.1016/j.jchromb.2018.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 10/09/2018] [Accepted: 10/17/2018] [Indexed: 12/11/2022]
Abstract
Alpha-fluoro-beta-alanine (FBAL), the final metabolite of capecitabine, is a toxic compound excreting with urine. Magnesium isoglycyrrhizinate injection is a traditional Chinese medicine prescribed with capecitabine as a hepatoprotective agent. The purposes of this study are to develop an ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method for direct, efficient and sensitive determination of FBAL in urine and explore the influence of magnesium isoglycyrrhizinate on the excretion of FBAL in rat model. The method development and validation were successfully achieved. The run time was 3 min based on an HILIC column and linear range was 0.02-10.00 μg/mL. The mass detection was completed using electrospray ionization in positive ionization mode with a multiple reaction monitoring mode. A simplified sample pretreatment procedure was performed by direct dilution using 50% acetonitrile aqueous solution with the matrix effect range 48.98%-52.10% and the recovery range 78.68%-83.28%. The intra-day and inter-day precision and accuracy were <11% and within ±6%, and the stability, specificity, carry-over, dilution effect and linearity all conformed to the criterions. This study presented preliminary results that the influence of magnesium isoglycyrrhizinate on the excretion of FBAL was insignificant in rats based on this new developed method.
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Affiliation(s)
- Zhipeng Wang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Yang Yang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Feng Zhang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Mingming Li
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Jing Chen
- School of Chemistry and Biology, Yichun College, Yichun City, Jiangxi Province 336000, PR China
| | - Huan Man
- School of Chemistry and Biology, Yichun College, Yichun City, Jiangxi Province 336000, PR China
| | - Wei Jiang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Rui Zhang
- School of Chemistry and Biology, Yichun College, Yichun City, Jiangxi Province 336000, PR China
| | - Shouhong Gao
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China.
| | - Wansheng Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China.
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Mei F, Yu J, Li M, Xiang M, Hong Y, Zhou Y, You Y, Xia H, Jin H, Wang W. Magnesium isoglycyrrhizinate alleviates liver injury in obese rats with acute necrotizing pancreatitis. Pathol Res Pract 2018; 215:106-114. [PMID: 30396756 DOI: 10.1016/j.prp.2018.10.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/11/2018] [Accepted: 10/26/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE For patients with acute necrotizing pancreatitis (ANP), a high body mass index (BMI) increases the likelihood of acute hepatic injury (AHI). In the current study, we explored whether magnesium isoglycyrrhizinate (MgIg) could alleviate ANP-induced liver injury in obese rats. METHODS Sprague-Dawley (SD) rats were selected for the present study, and the ANP model was established by retrograde injection of 5% sodium taurocholate into the biliary-pancreatic duct. Thirty-six SD rats were randomly assigned to six groups: the normal (N), standard rat chow (SRC) normal (SN), SRC ANP (S-ANP), high-fat diet (HFD) normal (H-N), HFD ANP (H-ANP), and MgIg pretreatment HFD ANP (H-ANPT) groups. The rats in the H-ANPT group were treated with MgIg (30 mg/kg) intragastrically for 7 days before the ANP model was established. The rats were sacrificed 12 h after ANP was established, and the blood and pancreatic and liver tissues were collected. Differences in the physiology, pathology and cellular and molecular responses of the rats in each group were examined. RESULT Analyses of serum amylase lipase, alanine aminotransferase and aspartate aminotransferase indicated that obesity aggravated ANP-induced hepatic injury and that MgIg improved liver function. The superoxide dismutase, malondialdehyde, M1 macrophage, M2 macrophage, neutrophil, NF-κB, IL-1β and caspase-3 levels in liver tissue showed that MgIg attenuated H-ANP-induced hepatic injury by inhibiting oxidative stress and inflammation. CONCLUSION Obesity aggravated ANP-induced liver injury via oxidative stress and inflammatory reactions. MgIg alleviated oxidative stress and decreased the inflammatory reaction, protecting the liver against the AHI induced by ANP in obese rats.
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Affiliation(s)
- Fangchao Mei
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Jia Yu
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Hubei Key Laboratory of Digestive System Disease, Wuhan 430060, Hubei Province, China
| | - Man Li
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Mingwei Xiang
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Yupu Hong
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Yu Zhou
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Hubei Key Laboratory of Digestive System Disease, Wuhan 430060, Hubei Province, China
| | - Yundong You
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Hubei Key Laboratory of Digestive System Disease, Wuhan 430060, Hubei Province, China
| | - He Xia
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Hubei Key Laboratory of Digestive System Disease, Wuhan 430060, Hubei Province, China
| | - Hongzhong Jin
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China; Hubei Key Laboratory of Digestive System Disease, Wuhan 430060, Hubei Province, China
| | - Weixing Wang
- Dept of General Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China.
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Guo WL, Pan YY, Li L, Li TT, Liu B, Lv XC. Ethanol extract of Ganoderma lucidum ameliorates lipid metabolic disorders and modulates the gut microbiota composition in high-fat diet fed rats. Food Funct 2018; 9:3419-3431. [PMID: 29877551 DOI: 10.1039/c8fo00836a] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The objective of this study was to investigate the effects of ethanol extract of Ganoderma lucidum (GL95) on hyperlipidaemia and gut microbiota, and its regulation mechanism in Wistar rats fed on a high-fat diet (HFD). UPLC-QTOF MS indicated that GL95 was enriched with triterpenoids, especially ganoderic acids. The results of the animal experiment showed that oral administration of GL95 markedly alleviated the dyslipidemia through decreasing the levels of serum total triglyceride (TG), total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C), and inhibiting hepatic lipid accumulation and steatosis. Furthermore, GL95 supplementation altered the composition of gut microbiota, in particular modulating the relative abundance of functionally relevant enterotypes compared with the HFD group. The Spearman's correlation analysis revealed that Alistipes, Defluviitalea, Peptococcaceae and Alloprevotella were negatively correlated with serum and hepatic lipid profiles. Meanwhile, the GL95 treatment regulated the mRNA expression levels of the genes involved in lipid and cholesterol metabolism. The findings above illustrate that Ganoderma triterpenoids have the potential to ameliorate lipid metabolic disorders, in part through modulating specific gut microbiota and regulating the genes involved in lipid and cholesterol metabolism, suggesting Ganoderma triterpenoids as a potential novel functional food for the treatment or prevention of hyperlipidaemia.
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Affiliation(s)
- Wei-Ling Guo
- National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, P. R. China.
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Tee JK, Peng F, Tan YL, Yu B, Ho HK. Magnesium Isoglycyrrhizinate Ameliorates Fibrosis and Disrupts TGF-β-Mediated SMAD Pathway in Activated Hepatic Stellate Cell Line LX2. Front Pharmacol 2018; 9:1018. [PMID: 30319402 PMCID: PMC6167412 DOI: 10.3389/fphar.2018.01018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 08/22/2018] [Indexed: 12/21/2022] Open
Abstract
Liver fibrosis is a histological change often attributed to the activation of hepatic stellate cells (HSCs) and the excessive formation of scar tissues in the liver. Advanced stages of the disease frequently lead to cirrhosis. Magnesium isoglycyrrhizinate (MgIG) has been accepted as a hepatoprotective drug with the potential of alleviating inflammatory conditions and thus promote liver recovery from viral- or drug-induced injury. While MgIG has been empirically integrated into the clinics to treat some liver diseases, its anti-fibrotic effect and the associated mechanisms remain poorly characterized. Herein, we demonstrated that 1 mg/ml MgIG attenuated the production of αSMA and collagen-1 in activated HSCs using TGF-β1-induced human HSCs LX2 as the fibrotic cell model. We found that MgIG exerts an inhibitory effect on the TGF-β-SMAD signaling pathway by arresting the binding of downstream transcription factors SMAD2/3 and SMAD4. Furthermore, MgIG was shown to suppress proliferation and induce senescence of activated LX2 cells. Protein expression of p27 and enzymatic activity of senescence-associated β-galactosidase were elevated upon exposure to MgIG. In addition, we observed that exposure of activated LX2 cells to MgIG reduces TGF-β-induced apoptosis. Interestingly, a lower toxicity profile was observed when human fetal hepatocytes LO2 were exposed to the same concentration and duration of the drug, suggesting the specificity of MgIG effect toward activated HSCs. Overall, hepatoprotective concentrations of MgIG is shown to exert a direct effect on liver fibrosis through inhibiting TGF-β-signaling, in which SMAD2/3 pathway could be one of the mechanisms responsible for the fibrotic response, thereby restoring the surviving cells toward a more quiescent phenotype. This provides critical mechanistic insights to support an otherwise empirical therapy.
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Affiliation(s)
- Jie Kai Tee
- NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences, National University of Singapore, Singapore, Singapore.,Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Fei Peng
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Yeong Lan Tan
- NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences, National University of Singapore, Singapore, Singapore.,Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Bo Yu
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Han Kiat Ho
- NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences, National University of Singapore, Singapore, Singapore.,Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Singapore
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The inhibition of Hippo/Yap signaling pathway is required for magnesium isoglycyrrhizinate to ameliorate hepatic stellate cell inflammation and activation. Biomed Pharmacother 2018; 106:83-91. [PMID: 29957470 DOI: 10.1016/j.biopha.2018.06.102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 02/07/2023] Open
Abstract
Liver fibrosis is a reversible pathological process accompanied by abnormal inflammation, and its end-stage cirrhosis is responsible for high morbidity and mortality worldwide. This study was to investigate the effect of Magnesium isoglycyrrhizinate (MgIG) on liver fibrosis and inflammation, and to further clarify molecular mechanism. We found that MgIG treatment significantly alleviated carbon tetrachloride (CCl4)-induced liver fibrosis and HSC activation by regulating TGF-β signaling and MMP/TIMP systems. In addition, MgIG treatment significantly inhibited the inflammatory response of liver fibrosis in mice characterized by reduced pro-inflammatory factors expression and increased anti-inflammatory factors expression. Interestingly, experiments in vitro also showed that MgIG treatment significantly reduced the expression of hepatic stellate cell (HSC) activation markers. Besides, MgIG treatment not only inhibited the expression of pro-inflammatory factors, but also promoted the production of anti-inflammatory factors in activated HSCs. Importantly, treatment with MgIG inhibited Hippo/Yap signaling pathway, which was a potential mechanism for MgIG-induced anti-inflammatory effects. The overexpression of Hippo/Yap signaling effector YAP completely impaired MgIG-induced anti-inflammatory and anti-fibrotic effects. Taken together, these results provide novel implications to reveal the molecular mechanism of the anti-inflammatory properties induced by MgIG, by which points to the possibility of using MgIG to treat liver fibrosis.
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Zhao XJ, Yang YZ, Zheng YJ, Wang SC, Gu HM, Pan Y, Wang SJ, Xu HJ, Kong LD. Dataset on assessment of magnesium isoglycyrrhizinate injection for dairy diet and body weight in fructose-induced metabolic syndrome of rats. Data Brief 2018; 18:69-75. [PMID: 29896493 PMCID: PMC5996226 DOI: 10.1016/j.dib.2018.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 02/08/2018] [Accepted: 03/02/2018] [Indexed: 11/19/2022] Open
Abstract
The data presented herein are related to the research article entitled “Magnesium isoglycyrrhizinate blocks fructose-induced hepatic NF-κB/NLRP3 inflammasome activation and lipid metabolism disorder” (Zhao et al., 2017) [1]. This article describes the effects of magnesium isoglycyrrhizinate on 24-h food or water intake in fructose-fed rats at 15-week. In addition, this article expands the effect of magnesium isoglycyrrhizinate on the animal body weight change during 1–17 week. The field dataset is made publicly available to enable critical or extended analyzes.
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Affiliation(s)
- Xiao-Juan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yan-Zi Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Yan-Jing Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Shan-Chun Wang
- Drug Screening and Evaluation Department of R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing 210023, PR China
| | - Hong-Mei Gu
- Drug Screening and Evaluation Department of R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing 210023, PR China
| | - Ying Pan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Shui-Juan Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Hong-Jiang Xu
- Drug Screening and Evaluation Department of R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., LTD, Nanjing 210023, PR China
- Corresponding author. Fax: +86-025-025-68551536.
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
- Corresponding author. Fax: +86-025-83594691.
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Nephan G, Coskun ZM, Bolkent S. Dipeptidyl peptidase-4 inhibition prevents cell death via extrinsic and intrinsic apoptotic pathways in rat pancreas with insulin resistance. Cell Biochem Funct 2018; 36:212-220. [DOI: 10.1002/cbf.3333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/21/2018] [Accepted: 04/13/2018] [Indexed: 01/16/2023]
Affiliation(s)
- Gulay Nephan
- Department of Medical Biology, Faculty of Cerrahpasa Medicine; Istanbul University; Istanbul Turkey
| | - Zeynep Mine Coskun
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences; Istanbul Bilim University; Istanbul Turkey
| | - Sema Bolkent
- Department of Medical Biology, Faculty of Cerrahpasa Medicine; Istanbul University; Istanbul Turkey
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Chang YY, Kao MC, Lin JA, Chen TY, Cheng CF, Wong CS, Tzeng IS, Huang CJ. Effects of MgSO4 on inhibiting Nod-like receptor protein 3 inflammasome involve decreasing intracellular calcium. J Surg Res 2018; 221:257-265. [PMID: 29229137 DOI: 10.1016/j.jss.2017.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/10/2017] [Accepted: 09/01/2017] [Indexed: 01/25/2023]
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Isoglycyrrhizinate Magnesium Enhances Hepatoprotective Effect of FK506 on Ischemia-Reperfusion Injury Through HMGB1 Inhibition in a Rat Model of Liver Transplantation. Transplantation 2017; 101:2862-2872. [PMID: 28885495 DOI: 10.1097/tp.0000000000001941] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Ischemia-reperfusion injury after liver transplantation (LT) impairs graft function and affects prognosis of recipients. Isoglycyrrhizinate magnesium (Iso) is a hepatoprotective drug usually used after liver injury. In this study, we intended to explore whether Iso alone have protective effect after ischemia-reperfusion injury in a rat model of liver transplantation. We also aimed to study whether Iso could enhance the hepatoprotective effect of FK506 (tacrolimus) and underlying mechanism. METHODS Rats after LT were treated with different concentration of FK506 with or without, Iso or lower-dose FK506 plus Iso. Alanine transaminase, aspartate transaminase, and albumin level were measured after 48 hours, 72 hours, and 7 days. A cell ischemic/reperfusion model was established to further study the mechanism of hepatoprotective effect of FK506 and Iso. RESULTS Iso treatment alone had no effect on liver grafts after LT, but lower-dose FK506 + Iso was better for maintenance of liver function than lower-dose FK506 alone at 48 hours, 72 hours, and 7 days after LT. In terms of mechanism, FK506 induced autophagy which resulted in significantly reduced apoptosis and maintained proliferative potential. However, autophagy induced by FK506 also lead to high-mobility group box (HMGB) 1 release from nuclei, resulting in hepatocyte injury through triggering of p38 phosphorylation and chemokine release. Iso effectively inhibited the release of HMGB1 and downstream inflammatory cytokines. CONCLUSIONS Iso could inhibit release of HMGB1 by FK506 and enhance the hepatoprotective effect of FK506 in rat LT. Combining Iso with FK506 would be promising for the patients after LT.
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