1
|
EGFR-TNFR1 pathway in endothelial cell facilitates acute lung injury by NF-κB/MAPK-mediated inflammation and RIP3-dependent necroptosis. Int Immunopharmacol 2023; 117:109902. [PMID: 36827922 DOI: 10.1016/j.intimp.2023.109902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/03/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023]
Abstract
Tumor necrosis factor-α (TNFα) has emerged as a pivotal effector critically correlated with disease severity in acute lung injury (ALI). Because both the excessive activation of epidermal growth factor receptor (EGFR) and tumor necrosis factor receptor 1 (TNFR1) in sepsis-induced vasculitis are markedly diminished through EGFR tyrosine kinase inhibitor, a specific mechanism must exist to modulate TNFR1 cellular fates regulated by EGFR. Here, we demonstrated that EGFR, a specific binding partner of TNFR1, exhibited an increased NF-κB/MAPK-mediated inflammation that was governed by enhanced recruitment of TNFR-associated factor 2 (TRAF2) to TNFR1 complex I in endothelial cell (EC). Moreover, EGFR activation triggered a remarkable increase in the phosphorylation of receptor-interacting protein 1 (RIP1) and its binding with receptor-interacting protein 3 (RIP3) which led to enhanced frequency of necroptosis in complex IIb. Inhibiting the kinase of EGFR disrupted the formation of complex I and complex IIb and prevents EC from NF-κB/MAPK-mediated inflammation and RIP3-dependent necroptosis. Consistently, pharmacological inhibition of EGFR can limit the destructive effects of neutrophils activation and the hyperpermeability of lung vascular in hyperinflammation period. Collectively, we have identified EC-EGFR as a modulator of TNFR1-mediated inflammation and RIP3-dependent necroptosis, providing a possible explanation for the immunological basis of anti-EGFR therapy in sepsis-induced ALI.
Collapse
|
2
|
Mu W, Wang Q, Jia M, Dong S, Li S, Yang J, Liu G. Hepatoprotective Effects of Albumin-Encapsulated Nanoparticles of a Curcumin Derivative COP-22 against Lipopolysaccharide/D-Galactosamine-Induced Acute Liver Injury in Mice. Int J Mol Sci 2022; 23:ijms23094903. [PMID: 35563293 PMCID: PMC9102161 DOI: 10.3390/ijms23094903] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 01/27/2023] Open
Abstract
Acute liver injury (ALI) is a severe syndrome and can further develop into acute liver failure (ALF) which can lead to high mortality and cause irreversible liver injuries in the clinic. Liver transplantation is the most common treatment; however, liver donors are lacking, and the progression of ALF is rapid. Nanoparticles can increase the bioavailability and the targeted accumulation of drugs in the liver, so as to significantly improve the therapeutic effect of ALI. Curcumin derivative COP-22 exhibits low cytotoxicity and effective anti-inflammatory activity; however, it has poor water solubility. In this study, COP-22-loaded bovine serum albumin (BSA) nanoparticles (22 NPs) were prepared and characterized. They exhibit effective hepatoprotective effects by inhibiting inflammation, oxidative stress, and apoptosis on Lipopolysaccharide/D-Galactosamine-induced acute liver injury of mice. The anti-inflammatory activity of 22 NPs is related to the regulation of the NF-κB signaling pathways; the antioxidant activity is related to the regulation of the Nrf2 signaling pathways; and the apoptosis activity is related to mitochondrial pathways, involving Bcl-2 family and Caspase-3 protein. These three cellular pathways are interrelated and affected each other. Moreover, 22 NPs could be passively targeted to accumulate in the liver through the retention effect and are more easily absorbed than 22.HCl salt in the liver.
Collapse
Affiliation(s)
| | | | | | | | | | - Jie Yang
- Correspondence: (J.Y.); (G.L.); Tel.: +86-15063505132 (L.G.)
| | - Guoyun Liu
- Correspondence: (J.Y.); (G.L.); Tel.: +86-15063505132 (L.G.)
| |
Collapse
|
3
|
Liu Y, Hao H, Hou T. Concanavalin A-induced autoimmune hepatitis model in mice: Mechanisms and future outlook. Open Life Sci 2022; 17:91-101. [PMID: 35291566 PMCID: PMC8886606 DOI: 10.1515/biol-2022-0013] [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: 08/18/2021] [Revised: 11/29/2021] [Accepted: 01/03/2022] [Indexed: 12/11/2022] Open
Abstract
Abstract
The concanavalin A (Con A)-induced liver injury mouse model is a typical animal model focusing on T cell-dependent hepatic damage in the field of autoimmune hepatitis (AIH). However, the underlying mechanism of hepatic dysfunction due to cell activation or signaling pathways triggered by Con A has not been fully clarified. Therefore, the controversy on this model remains in the academic community. In this article, we first summarized the merit and demerit of this contentious model from the perspectives of cell dysfunction, microcirculation disturbance, involved signaling pathways, as well as the properties of Con A. Then, we summed up the scientific implications of the model in elucidating the pathogenesis of AIH, and the shortcomings of this model were also summarized to elucidate the pathogenesis and application prospect of this classical liver injury mouse model in the study of AIH.
Collapse
Affiliation(s)
- Yang Liu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Huiqin Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Tiezheng Hou
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| |
Collapse
|
4
|
Tiegs G, Horst AK. TNF in the liver: targeting a central player in inflammation. Semin Immunopathol 2022; 44:445-459. [PMID: 35122118 PMCID: PMC9256556 DOI: 10.1007/s00281-022-00910-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/12/2022] [Indexed: 12/11/2022]
Abstract
Tumour necrosis factor-α (TNF) is a multifunctional cytokine. First recognized as an endogenous soluble factor that induces necrosis of solid tumours, TNF became increasingly important as pro-inflammatory cytokine being involved in the immunopathogenesis of several autoimmune diseases. In the liver, TNF induces numerous biological responses such as hepatocyte apoptosis and necroptosis, liver inflammation and regeneration, and autoimmunity, but also progression to hepatocellular carcinoma. Considering these multiple functions of TNF in the liver, we propose anti-TNF therapies that specifically target TNF signalling at the level of its specific receptors.
Collapse
Affiliation(s)
- Gisa Tiegs
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. .,Hamburg Center for Translational Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Andrea K Horst
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Hamburg Center for Translational Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| |
Collapse
|
5
|
Yue S, Wang T, Yang Y, Fan Y, Zhou L, Li M, Fu F. Lipopolysaccharide/D-galactosamine-induced acute liver injury could be attenuated by dopamine receptor agonist rotigotine via regulating NF-κB signaling pathway. Int Immunopharmacol 2021; 96:107798. [PMID: 34162160 DOI: 10.1016/j.intimp.2021.107798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/09/2021] [Accepted: 05/16/2021] [Indexed: 02/07/2023]
Abstract
The pathological of lipopolysaccharide (LPS)/D-galactosamine (D-Gal)-induced acute liver injury is similar to what is seen clinically, and be mediated by the release of pro-inflammatory mediators. A growing body of studies have shown that dopamine (DA) and DA receptor agonist are associated with inflammation and immune response. Rotigotine, a non-ergoline dopamine receptor agonist, is a drug for the treatment of Parkinson's disease. Rotigotine-loaded microspheres (RoMS) is an intramuscular extended-release agent, which can steadily release rotigotine for more than 7 days after a single administration. The present study aimed to investigate the effects of rotigotine and RoMS on inflammation and acute liver injury induced by LPS/D-Gal in mice. The LPS/D-Gal-induced liver injury was evidenced by increases of serum aminotransferases activities and liver histological lesions. Pretreatment with rotigotine or RoMS not only ameliorated the liver histologic lesions, but also reduced the activities of serum aminotransferases and the production of TNF-α. It also showed that rotigotine and RoMS increased DA receptor 2 (DRD2) expression in LPS/D-Gal-exposed mice. Rotigotine and RoMS activated β-arrestin 2, inhibited the phosphorylation of Akt, IκB and the transposition of NF-κB. In line with the above findings, the protective effects of rotigotine and RoMS were abrogated by haloperidol, a DA receptor antagonist. In conclusion, dopamine receptor agonist can regulate NF-κB inflammatory signaling pathway and exert protective effects in LPS/D-Gal-induced liver injury.
Collapse
Affiliation(s)
- Shumin Yue
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Tian Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Yunqi Yang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Yiqian Fan
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Lin Zhou
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Mingan Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China
| | - Fenghua Fu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264005, PR China.
| |
Collapse
|
6
|
Luo Q, Lao C, Huang C, Xia Y, Ma W, Liu W, Chen Z. Iron Overload Resulting from the Chronic Oral Administration of Ferric Citrate Impairs Intestinal Immune and Barrier in Mice. Biol Trace Elem Res 2021; 199:1027-1036. [PMID: 32468223 DOI: 10.1007/s12011-020-02218-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/22/2020] [Indexed: 01/15/2023]
Abstract
Ferric citrate (FC) is an iron-containing phosphate binder used as a food additive for iron supplementation. To explore the potential effect of ferric citrate on intestinal epithelial function, in the present study, we administered the mice orally for 16 weeks with different doses of iron citrate (2.5 mg/day (1.25%), 5 mg/day (2.5%), and 10 mg/day (5.0%)). We found that the iron levels of serum and tissue significantly increased, which caused the body to be in an iron overload state; meanwhile, the villus height, the ratio of villus height to crypt depth, and the number of intraepithelial lymphocytes and goblet cells in jejunum all decreased. Iron overload upregulated the pro-inflammatory cytokines (IL-1β, IL-2, IL-6, TNF-ɑ), while downregulated the anti-inflammatory cytokines (IL-4, IL-10) and sIgA. Moreover, iron overload increased serum D-lactate (D-LA) levels and decreased tight junction proteins (claudin-1, occludin, and ZO-1), MUC-2, and TFF3. In addition, iron overload upregulated the content of MDA and protein carbonyl, while downregulated the activity and content of T-AOC, GSH-PX, SOD, CAT, and GSH. To sum up, the present results showed that long-term oral administration of FC resulted in iron overload, which consequently impaired intestinal immune and barrier function in mice. Meanwhile, the effect on intestinal damage may be highly related to the increase of oxidative stress in the jejunum.
Collapse
Affiliation(s)
- Qihui Luo
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chengjie Lao
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chao Huang
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu Xia
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenjing Ma
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wentao Liu
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhengli Chen
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
| |
Collapse
|
7
|
Ahmed LA, Abd El-Rhman RH, Gad AM, Hassaneen SK, El-Yamany MF. Dibenzazepine combats acute liver injury in rats via amendments of Notch signaling and activation of autophagy. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2021; 394:337-348. [PMID: 32984915 DOI: 10.1007/s00210-020-01977-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/13/2020] [Indexed: 02/08/2023]
Abstract
Paracetamol is a commonly used over-the-counter analgesic and antipyretic drug. Nevertheless, an overdose of paracetamol leads to hepatic necrosis that can be lethal. This study aimed to assess the potential hepatoprotective effects of dibenzazepine, a Notch inhibitor, against acute liver injury in rats via interfering with oxidative stress, inflammation, apoptosis, autophagy, and Notch signaling. Silymarin (200 mg/kg, p.o.) or dibenzazepine (2 mg/kg, i.p.) were administered to rats for 5 days before a single hepatotoxic dose of paracetamol (800 mg/kg, i.p.). Pretreatment with silymarin and dibenzazepine significantly mitigated oxidative stress, inflammatory and apoptotic markers induced by paracetamol hepatotoxicity where dibenzazepine showed greater repression of inflammation. Furthermore, dibenzazepine was found to be significantly more efficacious than silymarin in inhibiting Notch signaling as represented by expression of Notch-1 and Hes-1. A significantly greater response was also demonstrated with dibenzazepine pretreatment with regard to the expression of autophagic proteins, Beclin-1 and LC-3. The aforementioned biochemical results were confirmed by histopathological examination. Autophagy and Notch signaling seem to play a significant role in protection provided by dibenzazepine for paracetamol-induced hepatotoxicity in rats, which could explain its superior results relative to silymarin. Graphical abstract.
Collapse
Affiliation(s)
- Lamiaa A Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Rana H Abd El-Rhman
- Department of Pharmacology, Egyptian Drug Authority formerly National Organization for Drug Control and Research, Giza, Egypt
| | - Amany M Gad
- Department of Pharmacology, Egyptian Drug Authority formerly National Organization for Drug Control and Research, Giza, Egypt
| | - Sherifa K Hassaneen
- Department of Pharmacology, Egyptian Drug Authority formerly National Organization for Drug Control and Research, Giza, Egypt
| | - Mohamad F El-Yamany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| |
Collapse
|
8
|
Exacerbated LPS/GalN-Induced Liver Injury in the Stress-Sensitive Wistar Kyoto Rat Is Associated with Changes in the Endocannabinoid System. Molecules 2020; 25:molecules25173834. [PMID: 32842550 PMCID: PMC7504576 DOI: 10.3390/molecules25173834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/14/2020] [Accepted: 08/20/2020] [Indexed: 02/08/2023] Open
Abstract
Acute liver injury (ALI) is a highly destructive and potentially life-threatening condition, exacerbated by physical and psychological stress. The endocannabinoid system plays a key role in modulating stress and hepatic function. The aim of this study was to examine the development of acute liver injury in the genetically susceptible stress-sensitive Wistar-Kyoto (WKY) rat compared with normo-stress-sensitive Sprague Dawley (SD) rats, and associated changes in the endocannabinoid system. Administration of the hepatotoxin lipopolysaccharide/D-Galactosamine (LPS/GalN) resulted in marked liver injury in WKY, but not SD rats, with increased alanine aminotransferase (ALT), aspartate aminotransferase (AST) and glutamate dehydrogenase (GLDH) plasma levels, significant histopathological changes, increased hepatic pro-inflammatory cytokine expression and caspase-3 activity and expression and reduced Glutathione (GSH) activity. Furthermore, compared to SD controls, WKY rats display increased anandamide and 2-Arachidonoylglycerol levels concurrent with decreased expression of their metabolic enzymes and a decrease in cannabinoid (CB)1 receptor expression following LPS/GalN. CB1 antagonism with AM6545 or CB2 agonism with JWH133 did not alter LPS/GalN-induced liver injury in SD or WKY rats. These findings demonstrate exacerbation of acute liver injury induced by LPS/GalN in a stress-sensitive rat strain, with effects associated with alterations in the hepatic endocannabinoid system. Further studies are required to determine if the endocannabinoid system mediates or modulates the exacerbation of liver injury in this stress-sensitive rat strain.
Collapse
|
9
|
Liu L, Zhang L, Li L, Chen M, Wang Z, Shen Y, Huang J, Tang L. Sleep deprivation aggravated lipopolysaccharide/D-galactosamine-induced acute liver injury by suppressing melatonin production. Inflamm Res 2020; 69:1133-1142. [PMID: 32809047 DOI: 10.1007/s00011-020-01393-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/13/2020] [Accepted: 08/11/2020] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Sleep loss is common in patients with liver injury, but the effects of sleep deprivation (SD) on liver injury remain unclear. In the present study, the potential effects of SD on acute liver injury and the underlying mechanisms have been investigated. METHODS The sleep of male BALB/c mice has been deprived by using a modified multiple platform water bath for 3 days and acute liver injury was induced by intraperitoneal injection of lipopolysaccharide (LPS) and D-galactosamine (D-Gal). The degree of liver injury was detected by aminotransferase determination, histopathology and survival rate analysis. Inflammatory response and melatonin (MT) were measured by enzyme-linked immunosorbent assay (ELISA). In addition, hepatocyte apoptosis was determined by caspase activity measurement and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. RESULTS We observed that SD increased plasma aminotransferases, TUNEL-positive hepatocytes, histological abnormalities and mortality rates in mice with LPS/D-Gal treatment. SD also promoted LPS/D-Gal-induced production of TNF-α and upregulated hepatic caspase-8, caspase-9, and caspase-3 activities in LPS/D-Gal-exposed mice. In addition, SD significantly decreased MT contents in plasma of mice with acute liver injury, but supplementation with MT reversed these SD-promoted changes. CONCLUSION Our data suggested that SD exacerbated LPS/D-Gal-induced liver injury via decreasing melatonin production.
Collapse
Affiliation(s)
- Lu Liu
- Department of Rehabilitation Medicine and Physical Therapy, The Affiliated Rehabilitation Hospital of Chongqing Medical University, 50 Xiejiawan Cultural Seventh Village, Jiulongpo District, Chongqing, 400050, China
| | - Li Zhang
- Department of Pathophysiology, Chongqing Medical University, 1 Yixueyuan Road, Chongqing, 400016, China
| | - Longjiang Li
- Department of Pathophysiology, Chongqing Medical University, 1 Yixueyuan Road, Chongqing, 400016, China
| | - Mengting Chen
- Department of Neurology, The Affiliated Rehabilitation Hospital of Chongqing Medical University, 50 Xiejiawan Cultural Seventh Village, Jiulongpo District, Chongqing, 400050, China
| | - Zhe Wang
- Department of Neurology, University-Town Hospital of Chongqing Medical University, 55 Middle Road, University City, Shapingba District, Chongqing, 401331, China
| | - Yi Shen
- Department of Pathophysiology, Chongqing Medical University, 1 Yixueyuan Road, Chongqing, 400016, China
| | - Jiayi Huang
- Department of Pathophysiology, Chongqing Medical University, 1 Yixueyuan Road, Chongqing, 400016, China
| | - Ling Tang
- Department of Neurology, University-Town Hospital of Chongqing Medical University, 55 Middle Road, University City, Shapingba District, Chongqing, 401331, China.
| |
Collapse
|
10
|
Zhuge A, Li B, Yuan Y, Lv L, Li Y, Wu J, Yang L, Bian X, Wang K, Wang Q, Yan R, Zhu X, Li L. Lactobacillus salivarius LI01 encapsulated in alginate-pectin microgels ameliorates D-galactosamine-induced acute liver injury in rats. Appl Microbiol Biotechnol 2020; 104:7437-7455. [PMID: 32666187 DOI: 10.1007/s00253-020-10749-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/01/2020] [Accepted: 06/16/2020] [Indexed: 12/13/2022]
Abstract
Acute liver failure is a clinical emergency associated with high mortality. Accumulating evidence indicates that gut microbiota participates in the progression of liver injury, and preventive therapies based on altering gut microbiota are of great interest. Previous studies demonstrated that Lactobacillus salivarius LI01 attenuates hepatic injury, though efficiency in curtailed in the harsh environment in the gastrointestinal tract. In this study, a system to encapsulate LI01 in alginate-pectin (AP) microgels was investigated. Encapsulation significantly enhances probiotic viability for long-term storage and heat treatment, and in simulated gastrointestinal fluids (SGF or SIF) and bile salt solutions. Acute liver injury was induced in Sprague-Dawley (SD) rats by D-galactosamine (D-GaIN) injection following pretreatment with probiotics. Liver and gut barrier function, cytokines, liver and gut histology, bacterial translocation, and gut microbiota were assessed. Administration of encapsulated LI01 more effectively upregulates hepatic anti-inflammatory cytokine IL-10 and TLR-3, restores expressions of gut barrier biomarkers Claudin-1 and MUC2 and attenuates destruction of mucosal ultrastructure compared with unencapsulated probiotics pretreatment. Pretreatment with AP-LI01 microgels altered the microbial community, decreasing the abundance of pathogenic taxa Ruminiclostridium, Dorea and Ruminococcaceae_UCG-004 and enriching beneficial taxa Ruminococcaceae_UCG-014, Eubacterium, and Prevotella_1 that produce short-chain fatty acids. These results suggest that AP encapsulation of LI01 boosts viability and attenuates liver injury by reducing inflammation and restoring intestinal barrier function. These beneficial effects are probably due to alternation of gut flora. These findings provide new insight into encapsulation technology and prevention of liver failure. KEY POINTS: • Alginate-pectin encapsulation enhances the viability of Lactobacillus salivarius LI01 under simulated commercial conditions and simulated gastrointestinal environment. • AP-LI01 microgel attenuates hepatic and intestinal inflammation and restores gut barrier function. • AP-LI01 microgel alters gut microbial community with increased SCFAs producers and decreased pathogenic microbes. • Beneficial improvements after administration of probiotics are highly associated with alternation of gut microbial community.
Collapse
Affiliation(s)
- Aoxiang Zhuge
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Bo Li
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Yin Yuan
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Longxian Lv
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Yating Li
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Jingjing Wu
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Liya Yang
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xiaoyuan Bian
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Kaicen Wang
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Qiangqiang Wang
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Ren Yan
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xueling Zhu
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
- Collaborative Innocation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.
| |
Collapse
|
11
|
Gabr SA, Gabr NS, Elsaed WM. Aqueous Green Tea Extract and Prediction of Fibrosis in Lipopolysaccharide Intoxicated Rats. INT J PHARMACOL 2019. [DOI: 10.3923/ijp.2019.403.417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
12
|
Ding W, Fan YY, Zhang C, Fu L, Chen X, Xu DX. Obeticholic acid differentially regulates hepatic injury and inflammation at different stages of D-galactosamine/lipopolysaccharide-evoked acute liver failure. Eur J Pharmacol 2019; 850:150-157. [PMID: 30772394 DOI: 10.1016/j.ejphar.2019.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 01/30/2019] [Accepted: 02/11/2019] [Indexed: 12/12/2022]
Abstract
The farnesoid X receptor (FXR) is a ligand-activated transcription factor that regulates genes involved in bile acid metabolism. Accumulating data demonstrate that FXR has an anti-inflammatory activity. The present study aimed to investigate the effect of obeticholic acid (OCA), a novel synthetic FXR agonist, on D-galactosamine (GalN)/lipopolysaccharide (LPS)-evoked acute liver injury. All mice except controls were intraperitoneally injected with GalN (300 mg/kg) plus LPS (2.5 μg/kg). Some mice were pretreated with OCA (10 mg/kg) 48, 24 and 1 h before GalN/LPS. As expected, pretreatment with OCA alleviated hepatocyte apoptosis at early and middle stages of GalN/LPS-induced acute liver failure. By contrast, pretreatment with OCA augmented hepatic injury and inflammatory cell infiltration at middle stage of GalN/LPS-induced acute liver failure. Additional experiment found that OCA inhibited hepatic NF-κB activation at early and middle stages of GalN/LPS-induced acute liver failure. Interestingly, OCA inhibited hepatic proinflammatory cytokine tnf-α and il-6 but upregulated hepatic anti-inflammatory cytokine il-10 at early stage of GalN/LPS-induced acute liver failure. By contrast, OCA suppressed hepatic anti-inflammatory cytokine tgf-β and il-10 at middle stage of GalN/LPS-induced acute liver injury. These results suggest that FXR agonist OCA differentially regulates hepatic injury and inflammation at different stages of GalN/LPS-evoked acute liver failure.
Collapse
Affiliation(s)
- Wen Ding
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Yuan-Yuan Fan
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Cheng Zhang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Lin Fu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Xi Chen
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China.
| |
Collapse
|
13
|
de Gomes MG, Donato F, Souza LC, Goes AR, Filho CB, Del Fabbro L, Bianchini MC, Hassan W, Boeira SP, Puntel RL, Jesse CR. γ-Oryzanol supplementation modifies the inflammatory and oxidative response in fulminant hepatic failure in mice. PHARMANUTRITION 2018. [DOI: 10.1016/j.phanu.2018.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
14
|
Sayler E, Shedlofsky SI, Swim AT, Lemasters JJ, Thurman RG. The calcium channel blocker nisoldipine minimizes the release of tumor necrosis factor and interleukin-6 following rat liver transplantation. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.398] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Nagaki M, Hughes R, Lau J, Williams R. Removal of Endotoxin and Cytokines by Adsorbents and the Effect of Plasma Protein Binding. Int J Artif Organs 2018. [DOI: 10.1177/039139889101400109] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- M. Nagaki
- Liver Unit, King's College School of Medicine and Dentistry, London - U.K
| | - R.D. Hughes
- Liver Unit, King's College School of Medicine and Dentistry, London - U.K
| | - J.Y.N. Lau
- Liver Unit, King's College School of Medicine and Dentistry, London - U.K
| | - Roger Williams
- Liver Unit, King's College School of Medicine and Dentistry, London - U.K
| |
Collapse
|
16
|
Zhang H, Jia R, Wang F, Qiu G, Qiao P, Xu X, Wu D. Catalpol protects mice against Lipopolysaccharide/D-galactosamine-induced acute liver injury through inhibiting inflammatory and oxidative response. Oncotarget 2017; 9:3887-3894. [PMID: 29423091 PMCID: PMC5790508 DOI: 10.18632/oncotarget.23242] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/01/2017] [Indexed: 01/10/2023] Open
Abstract
The purpose of this study was to investigate the protective effect of catalpol on Lipopolysaccharide (LPS)/D-galactosamine (D-gal)-induced acute liver injury in mice. The mouse model was established by injection of LPS and D-gal. Catalpol (2.5, 5, 10 mg/kg) were pretreated intraperitoneally 1 h before LPS and D-gal. The survival rate, AST, ALT, MDA, MPO activity, hepatic tissue histology, TNF-α level, and NF-κB activation were assayed. The results revealed that catalpol dose-dependently elevated the survival rate. Furthermore, catalpol reduced the activities of AST, ALT, MDA, and MPO. The production of TNF-α was also inhibited by treatment of catalpol. In addition, catalpol inhibited LPS/D-gal-induced NF-κB activation. The expression of Nrf2 and HO-1 were up-regulated by treatment of catalpol. These results indicated that pretreatment with catalpol could attenuate LPS/D-gal-induced acute liver injury in mice and the underlying mechanism may due to the inhibition of NF-κB signaling pathway and the activation of Nrf2 signaling pathway.
Collapse
Affiliation(s)
- Haogang Zhang
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Ruichun Jia
- Department of Blood Transfusion, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Fujing Wang
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Gongcai Qiu
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Pengfei Qiao
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Xunzheng Xu
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Dequan Wu
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| |
Collapse
|
17
|
Filliol A, Piquet-Pellorce C, Raguénès-Nicol C, Dion S, Farooq M, Lucas-Clerc C, Vandenabeele P, Bertrand MJM, Le Seyec J, Samson M. RIPK1 protects hepatocytes from Kupffer cells-mediated TNF-induced apoptosis in mouse models of PAMP-induced hepatitis. J Hepatol 2017; 66:1205-1213. [PMID: 28088582 DOI: 10.1016/j.jhep.2017.01.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 01/02/2017] [Accepted: 01/03/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND & AIMS The severity of liver diseases is exacerbated by the death of hepatocytes, which can be induced by the sensing of pathogen associated molecular patterns (PAMPs) derived from the gut microbiota. The molecular mechanisms regulating these cell death pathways are poorly documented. In this study, we investigated the role of the receptor interacting protein kinase 1 (RIPK1), a protein known to regulate cell fate decisions, in the death of hepatocytes using two in vivo models of PAMP-induced hepatitis. METHODS Hepatitis was induced in mice by independent injections of two different bacterial PAMPs: lipopolysaccharide (LPS) and unmethylated CpG oligodeoxynucleotide (CpG-DNA) motifs. The role of RIPK1 was evaluated by using mice specifically lacking RIPK1 in liver parenchymal cells (Ripk1LPC-KO). Administration of liposome-encapsulated clodronate served to investigate the role of Kupffer cells in the establishment of the disease. Etanercept, a tumor necrosis factor (TNF)-decoy receptor, was used to study the contribution of TNF-α during LPS-mediated liver injury. RESULTS Whereas RIPK1 deficiency in liver parenchymal cells did not trigger basal hepatolysis, it greatly sensitized hepatocytes to apoptosis and liver damage following a single injection of LPS or CpG-DNA. Importantly, hepatocyte death was prevented by previous macrophage depletion or by TNF inhibition. CONCLUSIONS Our data highlight the pivotal function of RIPK1 in maintaining liver homeostasis in conditions of macrophage-induced TNF burst in response to PAMPs sensing. LAY SUMMARY Excessive death of hepatocytes is a characteristic of liver injury. A new programmed cell death pathway has been described involving upstream death ligands such as TNF and downstream kinases such as RIPK1. Here, we show that in the presence of LPS liver induced hepatic injury was due to secretion of TNF by liver macrophages, and that RIPK1 acts as a powerful protector of hepatocyte death. This newly identified pathway in the liver may be helpful in the management of patients to predict their risk of developing acute liver failure.
Collapse
Affiliation(s)
- Aveline Filliol
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| | - Claire Piquet-Pellorce
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| | - Céline Raguénès-Nicol
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France; Centre National de la Recherche Scientifique (CNRS), UMR 6290, Institut de Génétique et Développement de Rennes (IGDR), F-35043 Rennes, France
| | - Sarah Dion
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| | - Muhammad Farooq
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| | - Catherine Lucas-Clerc
- Université de Rennes 1, F-35043 Rennes, France; Service de Biochimie CHU Rennes, Université de Rennes 1; F-35043 Rennes, France
| | - Peter Vandenabeele
- Inflammation Research Center, VIB, Technologiepark 927, Zwijnaarde-Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, Zwijnaarde-Ghent 9052, Belgium
| | - Mathieu J M Bertrand
- Inflammation Research Center, VIB, Technologiepark 927, Zwijnaarde-Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, Zwijnaarde-Ghent 9052, Belgium
| | - Jacques Le Seyec
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| | - Michel Samson
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement et Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Structure Fédérative BioSit UMS3480 CNRS-US18 Inserm, F-35043 Rennes, France
| |
Collapse
|
18
|
Abstract
BACKGROUND The liver has a number of functions in innate immunity. These functions predispose the liver to innate immune-mediated liver injury when inflammation goes unchecked. Significant progress has been made in the last 25 years on sterile inflammatory liver injury in a number of models; however, a great deal of controversy and many questions about the nature of sterile inflammation still exist. AIM The goal of this article is to review sterile inflammatory liver injury using both a basic approach to what constitutes the inflammatory injury, and through examination of current models of liver injury and inflammation. This information will be tied to human patient conditions when appropriate. RELEVANCE FOR PATIENTS Inflammation is one of the most critical factors for managing in-patient liver disease in a number of scenarios. More information is needed for both scientists and clinicians to develop rational treatments.
Collapse
Affiliation(s)
- Benjamin L Woolbright
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas, USA
| |
Collapse
|
19
|
Jarosz M, Olbert M, Wyszogrodzka G, Młyniec K, Librowski T. Antioxidant and anti-inflammatory effects of zinc. Zinc-dependent NF-κB signaling. Inflammopharmacology 2017; 25:11-24. [PMID: 28083748 PMCID: PMC5306179 DOI: 10.1007/s10787-017-0309-4] [Citation(s) in RCA: 365] [Impact Index Per Article: 52.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 12/31/2016] [Indexed: 12/13/2022]
Abstract
Zinc is a nutritionally fundamental trace element, essential to the structure and function of numerous macromolecules, including enzymes regulating cellular processes and cellular signaling pathways. The mineral modulates immune response and exhibits antioxidant and anti-inflammatory activity. Zinc retards oxidative processes on a long-term basis by inducing the expression of metallothioneins. These metal-binding cysteine-rich proteins are responsible for maintaining zinc-related cell homeostasis and act as potent electrophilic scavengers and cytoprotective agents. Furthermore, zinc increases the activation of antioxidant proteins and enzymes, such as glutathione and catalase. On the other hand, zinc exerts its antioxidant effect via two acute mechanisms, one of which is the stabilization of protein sulfhydryls against oxidation. The second mechanism consists in antagonizing transition metal-catalyzed reactions. Zinc can exchange redox active metals, such as copper and iron, in certain binding sites and attenuate cellular site-specific oxidative injury. Studies have demonstrated that physiological reconstitution of zinc restrains immune activation, whereas zinc deficiency, in the setting of severe infection, provokes a systemic increase in NF-κB activation. In vitro studies have shown that zinc decreases NF-κB activation and its target genes, such as TNF-α and IL-1β, and increases the gene expression of A20 and PPAR-α, the two zinc finger proteins with anti-inflammatory properties. Alternative NF-κB inhibitory mechanism is initiated by the inhibition of cyclic nucleotide phosphodiesterase, whereas another presumed mechanism consists in inhibition of IκB kinase in response to infection by zinc ions that have been imported into cells by ZIP8.
Collapse
Affiliation(s)
- Magdalena Jarosz
- Department of Radioligands, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland.
| | - Magdalena Olbert
- Department of Radioligands, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Gabriela Wyszogrodzka
- Department of Pharmaceutical Technology and Biopharmaceutics, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Katarzyna Młyniec
- Department of Pharmacobiology, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Tadeusz Librowski
- Department of Radioligands, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| |
Collapse
|
20
|
RIPK1 protects from TNF-α-mediated liver damage during hepatitis. Cell Death Dis 2016; 7:e2462. [PMID: 27831558 PMCID: PMC5260888 DOI: 10.1038/cddis.2016.362] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 09/26/2016] [Accepted: 09/29/2016] [Indexed: 02/07/2023]
Abstract
Cell death of hepatocytes is a prominent characteristic in the pathogenesis of liver disease, while hepatolysis is a starting point of inflammation in hepatitis and loss of hepatic function. However, the precise molecular mechanisms of hepatocyte cell death, the role of the cytokines of hepatic microenvironment and the involvement of intracellular kinases, remain unclear. Tumor necrosis factor alpha (TNF-α) is a key cytokine involved in cell death or survival pathways and the role of RIPK1 has been associated to the TNF-α-dependent signaling pathway. We took advantage of two different deficient mouse lines, the RIPK1 kinase dead knock-in mice (Ripk1K45A) and the conditional knockout mice lacking RIPK1 only in liver parenchymal cells (Ripk1LPC-KO), to characterize the role of RIPK1 and TNF-α in hepatitis induced by concanavalin A (ConA). Our results show that RIPK1 is dispensable for liver homeostasis under steady-state conditions but in contrast, RIPK1 kinase activity contributes to caspase-independent cell death induction following ConA injection and RIPK1 also serves as a scaffold, protecting hepatocytes from massive apoptotic cell death in this model. In the Ripk1LPC-KO mice challenged with ConA, TNF-α triggers apoptosis, responsible for the observed severe hepatitis. Mechanism potentially involves both TNF-independent canonical NF-κB activation, as well as TNF-dependent, but canonical NF-κB-independent mechanisms. In conclusion, our results suggest that RIPK1 kinase activity is a pertinent therapeutic target to protect liver against excessive cell death in liver diseases.
Collapse
|
21
|
Yan D, Liu HL, Yu ZJ, Huang YH, Gao D, Hao H, Liao SS, Xu FY, Zhou XY. BML-111 Protected LPS/D-GalN-Induced Acute Liver Injury in Rats. Int J Mol Sci 2016; 17:ijms17071114. [PMID: 27420055 PMCID: PMC4964489 DOI: 10.3390/ijms17071114] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/30/2016] [Accepted: 07/01/2016] [Indexed: 01/08/2023] Open
Abstract
Lipoxins (LXs) display unique pro-resolving and anti-inflammatory functions in a variety of inflammatory conditions. The present study was undertaken to investigate the effects of BML-111 (5(S),6(R),7-trihydroxyheptanoic acid methyl ester), the agonist of lipoxin A₄ receptor, in a model of Lipopolysaccharides (LPS) and d-Galactosamine (d-GalN) induced acute liver injury, and to explore the mechanisms. Histopathological analyses were carried out to quantify liver injury degree. The activities of myeloperoxidase (MPO) were examined to evaluate the levels of neutrophil infiltration. The activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in serum were detected to evaluate the functions of the liver. The amounts of tumor necrosis factor-α (TNF-α), interleukin-10 (IL-10), and interleukin-1β (IL-1β) were measured using enzyme-linked immunosorbent assay (ELISA), and the expression levels of transforming growth factor-β1(TGF-β1) and cyclooxygenase-2 (COX-2) were examined using Western blotting. The antioxidant capacity, the activities of inducible nitric oxide synthase (iNOS), the contents of malondialdehyde (MDA) and nitric oxide (NO) were analyzed with the kits via biochemical analysis. We established the model of acute liver injury with lipopolysaccharide and d-Galactosamine (LPS/d-GalN): (1) histopathological results and MPO activities, with the activities of AST and ALT in serum, consistently demonstrated LPS and d-GalN challenge could cause severe liver damage, but BML-111 could prevent pathological changes, inhibit neutrophil infiltration, and improve the hepatic function; (2) LPS/d-GalN increased TNF-α, IL-1β, COX-2, and IL-10, while decreasing TGF-β1. However, BML-111 could repress LPS/d-GalN -induced TNF-α, IL-1β and COX-2, meanwhile increasing the expression levels of TGF-β1 and IL-10; (3) LPS/d-GalN inhibited the activities of superoxide dismutase (SOD), catalase (CAT), total antioxidant capacity (T-AOC), and hydroxyl radical-scavenging ability, simultaneously increasing the levels of MDA and NO, so also the activity of iNOS. Otherwise, BML-111 could reverse all the phenomena. In a word, BML-111 played a protective role in acute liver injury induced by LPS and d-GalN in rats, through improving antioxidant capacity and regulating the balance of inflammatory cytokines.
Collapse
Affiliation(s)
- Dan Yan
- Department of Pharmacology, Medical College of Nanchang University, Nanchang 330006, China.
- Department of Pharmacy, Jiangxi Province Cancer Hospital, Nanchang 330006, China.
| | - Hai-Ling Liu
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang 330006, China.
| | - Zhong-Jian Yu
- Department of Pharmacology, Medical College of Nanchang University, Nanchang 330006, China.
- Department of Science and Education, Jiangxi Province Cancer Hospital, Nanchang 330006, China.
| | - Yong-Hong Huang
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang 330006, China.
- Jiangxi Province Key Laboratory of Tumor Etiology and Molecular Pathology, Nanchang 330006, China.
| | - Dian Gao
- Department of Human Parasitology, Medical College of Nanchang University, Nanchang 330006, China.
| | - Hua Hao
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China.
| | - Shou-Sheng Liao
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China.
| | - Fang-Yun Xu
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang 330006, China.
| | - Xiao-Yan Zhou
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang 330006, China.
- Jiangxi Province Key Laboratory of Tumor Etiology and Molecular Pathology, Nanchang 330006, China.
| |
Collapse
|
22
|
Ninomiya K, Miyazawa S, Ozeki K, Matsuo N, Muraoka O, Kikuchi T, Yamada T, Tanaka R, Morikawa T. Hepatoprotective Limonoids from Andiroba (Carapa guianensis). Int J Mol Sci 2016; 17:E591. [PMID: 27104518 PMCID: PMC4849045 DOI: 10.3390/ijms17040591] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/09/2016] [Accepted: 04/14/2016] [Indexed: 01/07/2023] Open
Abstract
Three gedunin-type limonoids, gedunin (1), 6α-acetoxygedunin (2), and 7-deacetoxy-7-oxogedunin (3), which were isolated from the seed and flower oils of andiroba (Carapa guianensis Aublet, Meliaceae), exhibited hepatoprotective effects at doses of 25 mg/kg, p.o. against d-galactosamine (d-GalN)/lipopolysaccharide (LPS)-induced liver injury in mice. To characterize the mechanisms of action of 1-3 and clarify the structural requirements for their hepatoprotective effects, 17 related limonoids (1-17) isolated from the seed and/or flower oils of C. guianensis were examined in in vitro studies assessing their effects on (i) d-GalN-induced cytotoxicity in primary cultured mouse hepatocytes, (ii) LPS-induced nitric oxide (NO) production in mouse peritoneal macrophages, and (iii) tumor necrosis factor-α (TNF-α)-induced cytotoxicity in L929 cells. The mechanisms of action of 1-3 are likely to involve the inhibition of LPS-induced macrophage activation and reduced sensitivity of hepatocytes to TNF-α; however, these compounds did not decrease the cytotoxicity caused by d-GalN. In addition, the structural requirements of limonoids (1-17) for inhibition of LPS-induced NO production in mouse peritoneal macrophages and TNF-α-induced cytotoxicity in L929 cells were evaluated.
Collapse
Affiliation(s)
- Kiyofumi Ninomiya
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
- Antiaging Center, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Seiya Miyazawa
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Kaiten Ozeki
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Natsuko Matsuo
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Osamu Muraoka
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
- Antiaging Center, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
- Laboratory of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Takashi Kikuchi
- Laboratory of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Takeshi Yamada
- Laboratory of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Reiko Tanaka
- Laboratory of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Toshio Morikawa
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
- Antiaging Center, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| |
Collapse
|
23
|
Maes M, Vinken M, Jaeschke H. Experimental models of hepatotoxicity related to acute liver failure. Toxicol Appl Pharmacol 2016; 290:86-97. [PMID: 26631581 PMCID: PMC4691574 DOI: 10.1016/j.taap.2015.11.016] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/19/2015] [Accepted: 11/24/2015] [Indexed: 12/13/2022]
Abstract
Acute liver failure can be the consequence of various etiologies, with most cases arising from drug-induced hepatotoxicity in Western countries. Despite advances in this field, the management of acute liver failure continues to be one of the most challenging problems in clinical medicine. The availability of adequate experimental models is of crucial importance to provide a better understanding of this condition and to allow identification of novel drug targets, testing the efficacy of new therapeutic interventions and acting as models for assessing mechanisms of toxicity. Experimental models of hepatotoxicity related to acute liver failure rely on surgical procedures, chemical exposure or viral infection. Each of these models has a number of strengths and weaknesses. This paper specifically reviews commonly used chemical in vivo and in vitro models of hepatotoxicity associated with acute liver failure.
Collapse
Affiliation(s)
- Michaël Maes
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Mathieu Vinken
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, United States
| |
Collapse
|
24
|
Abstract
The intravenous injection of the plant lectin concanavalin A (ConA) is a widely used model for acute immune-mediated hepatitis in mice. In contrast to several other models for acute hepatic damage, ConA-induced injury is primarily driven by the activation and recruitment of T cells to the liver. Hence, the ConA model has unique features with respect to its pathogenesis and important similarities to immune-mediated hepatitis in humans, such as autoimmune hepatitis, acute viral hepatitis or distinct entities of drug toxicity leading to immune activation. However, the ConA model has considerable variability, depending on the preparation of the compound, genetic background of the mice, sex, age and microbial environment of the animal facility barrier. This standard operating procedure (SOP) comprises a detailed protocol for the ConA application, including preparation of ConA working solution, handling of the animals, choice of the appropriate conditions and endpoints, as well as efficient dose-finding.
Collapse
Affiliation(s)
- F Heymann
- Department of Internal Medicine III, RWTH University Hospital Aachen, Aachen, Germany
| | - K Hamesch
- Department of Internal Medicine III, RWTH University Hospital Aachen, Aachen, Germany
| | - R Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, Aachen, Germany for the Transregional Collaborative Research Center 'Organ Fibrosis: From Mechanisms of Injury to Modulation of Disease' (SFB/TRR57)
| | - F Tacke
- Department of Internal Medicine III, RWTH University Hospital Aachen, Aachen, Germany
| |
Collapse
|
25
|
Liu YM, Zhu LL, Li R, Zhang JL, Yao SS, Zhou XB, Zeng H, Wang XB. Xijiao Dihuang Decoction () and Rehmannia glutinosa Libosch. protect mice against lipopolysaccharide and tumor necrosis factor alpha-induced acute liver failure. Chin J Integr Med 2015; 25:446-453. [PMID: 26016454 DOI: 10.1007/s11655-015-2141-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To investigate the hepatoprotective effect of Xijiao Dihuang Decoction (, XJDHD) on lipopolysaccharide (LPS)- and tumor necrosis factor alpha (TNF-α)-induced acute liver failure (ALF) as well as the underlying mechanism of action, and to clarify the key herbs and components of XJDHD. METHODS LPS/D-galactosamine (D-GalN) or TNF-α/D-GalN were intraperitoneally injected into C57BL/6J mice to induce ALF. Simultaneously, XJDHD or its individual herbs and components were orally administered. Survival rates, transaminase levels in serum, and hepatic histology were examined to evaluate the effects of XJDHD. The terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay and real-time polymerase chain reaction were additionally performed to expound the mechanism underlying the anti-apoptotic activity of XJDHD. RESULTS Oral administration of XJDHD protected mice from lethal liver failure induced by LPS and TNF-α, with notable amelioration of liver injury in histology and a significant decrease in transaminase levels in serum. XJDHD significantly inhibited apoptosis of hepatocytes and enhanced expression of the antiapoptosis genes, c-Flip, Iap1, Gadd45b and A20. In addition, Rehmannia glutinosa Libosch. was identified as the key herb of XJDHD and galactose as the effective component of Rehmannia glutinosa Libosch. that protects against ALF. CONCLUSIONS XJDHD inhibits TNF-α-induced apoptosis of hepatocytes by promoting the expression of nuclear factor κ B-regulated anti-apoptotic genes. Rehmannia glutinosa Libosch. is the effective herb of XJDHD and galactose is an active component in this protection.
Collapse
Affiliation(s)
- Yan-Min Liu
- Center of Integrative Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Liu-Luan Zhu
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Rui Li
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Jin-Liang Zhang
- Center of Integrative Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Shan-Shan Yao
- Center of Integrative Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Xiao-Bing Zhou
- Center of Integrative Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Hui Zeng
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China.
| | - Xian-Bo Wang
- Center of Integrative Medicine, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China.
| |
Collapse
|
26
|
C/EBP homologous protein (CHOP) contributes to hepatocyte death via the promotion of ERO1α signalling in acute liver failure. Biochem J 2015; 466:369-78. [PMID: 25387528 DOI: 10.1042/bj20140412] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CCAAT/enhancer binding protein (C/EBP)-homologous protein (CHOP) has been shown to be a key molecule in endoplasmic reticulum (ER) stress-mediated apoptosis. ER oxidoreductin 1-α (ERO1α), a target of CHOP, is an important oxidizing enzyme that regulates reactive oxygen species (ROS), which play a prominent role in hepatocellular death during acute liver failure (ALF). However, little is known about how CHOP facilitates ROS-induced hepatocellular injury. The present study was designed to investigate the roles and molecular mechanisms of CHOP in ALF. In the liver tissues from ALF patients, the expression of CHOP was significantly increased, which was accompanied by increased expression of dsRNA-dependent protein kinase (PKR)-like ER kinase (PERK) signalling, activating transcription factor 4 (ATF6) signalling, inositol-requiring enzyme-1 (IRE1) signalling and ERO1α, as compared with healthy controls. In the mouse model of galactosamine (GaIN)/lipopolysaccharide (LPS)-induced ALF, the hepatocellular injury was accompanied by up-regulated PERK signalling, ATF6 signalling, IRE1 signalling, CHOP and ERO1α. In contrast, CHOP deficiency decreased hepatocellular apoptosis/necrosis and increased animal survival. Furthermore, disruption of CHOP decreased ERO1α expression leading to reducing ROS-induced cell death in vivo and in vitro. Interestingly, ERO1α overexpression restored GaIN/LPS-induced hepatocellular injury in CHOP-deficient mice. Our studies demonstrate for the first time that CHOP promotes liver damage during ALF through activation of ERO1α, a key mediator to link ER stress and ROS. Therefore, targeting CHOP/ERO1α signalling could be a novel therapeutic approach during ALF.
Collapse
|
27
|
Li J, Xia Y, Liu T, Wang J, Dai W, Wang F, Zheng Y, Chen K, Li S, Abudumijiti H, Zhou Z, Wang J, Lu W, Zhu R, Yang J, Zhang H, Yin Q, Wang C, Zhou Y, Lu J, Zhou Y, Guo C. Protective effects of astaxanthin on ConA-induced autoimmune hepatitis by the JNK/p-JNK pathway-mediated inhibition of autophagy and apoptosis. PLoS One 2015; 10:e0120440. [PMID: 25761053 PMCID: PMC4356569 DOI: 10.1371/journal.pone.0120440] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 01/22/2015] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Astaxanthin, a potent antioxidant, exhibits a wide range of biological activities, including antioxidant, atherosclerosis and antitumor activities. However, its effect on concanavalin A (ConA)-induced autoimmune hepatitis remains unclear. The aim of this study was to investigate the protective effects of astaxanthin on ConA-induced hepatitis in mice, and to elucidate the mechanisms of regulation. MATERIALS AND METHODS Autoimmune hepatitis was induced in in Balb/C mice using ConA (25 mg/kg), and astaxanthin was orally administered daily at two doses (20 mg/kg and 40 mg/kg) for 14 days before ConA injection. Levels of serum liver enzymes and the histopathology of inflammatory cytokines and other maker proteins were determined at three time points (2, 8 and 24 h). Primary hepatocytes were pretreated with astaxanthin (80 μM) in vitro 24 h before stimulation with TNF-α (10 ng/ml). The apoptosis rate and related protein expression were determined 24 h after the administration of TNF-α. RESULTS Astaxanthin attenuated serum liver enzymes and pathological damage by reducing the release of inflammatory factors. It performed anti-apoptotic effects via the descending phosphorylation of Bcl-2 through the down-regulation of the JNK/p-JNK pathway. CONCLUSION This research firstly expounded that astaxanthin reduced immune liver injury in ConA-induced autoimmune hepatitis. The mode of action appears to be downregulation of JNK/p-JNK-mediated apoptosis and autophagy.
Collapse
Affiliation(s)
- Jingjing Li
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yujing Xia
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Tong Liu
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Junshan Wang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Weiqi Dai
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Fan Wang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yuanyuan Zheng
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Kan Chen
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Sainan Li
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Huerxidan Abudumijiti
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Zheng Zhou
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, The First Clinical Medical College of Nanjing Medical University, Nanjing, 210029, China
| | - Jianrong Wang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, The First Clinical Medical College of Nanjing Medical University, Nanjing, 210029, China
| | - Wenxia Lu
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, The First Clinical Medical College of Nanjing Medical University, Nanjing, 210029, China
| | - Rong Zhu
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, The First Clinical Medical College of Nanjing Medical University, Nanjing, 210029, China
| | - Jing Yang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Huawei Zhang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Soochow University, Suzhou, 215006, China
| | - Qin Yin
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Soochow University, Suzhou, 215006, China
| | - Chengfen Wang
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yuqing Zhou
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Soochow University, Suzhou, 215006, China
| | - Jie Lu
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yingqun Zhou
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Chuanyong Guo
- Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| |
Collapse
|
28
|
Tanaka Y, Kaibori M, Miki H, Nakatake R, Tokuhara K, Nishizawa M, Okumura T, Kwon AH. Alpha-lipoic acid exerts a liver-protective effect in acute liver injury rats. J Surg Res 2015; 193:675-83. [DOI: 10.1016/j.jss.2014.08.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/19/2014] [Accepted: 08/28/2014] [Indexed: 01/23/2023]
|
29
|
Bal F, Bekpinar S, Unlucerci Y, Kusku-Kiraz Z, Önder S, Uysal M, Gurdol F. Antidiabetic drug metformin is effective on the metabolism of asymmetric dimethylarginine in experimental liver injury. Diabetes Res Clin Pract 2014; 106:295-302. [PMID: 25263501 DOI: 10.1016/j.diabres.2014.08.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 08/13/2014] [Accepted: 08/30/2014] [Indexed: 10/24/2022]
Abstract
AIMS We aimed to investigate the pharmacological efficiency of metformin on asymmetric dimethylarginine (ADMA) metabolism in inflammation caused by the lipopolysaccharide (LPS)/D-galactosamine (D-GalN) treatment. METHODS Adult Sprague-Dawley rats were injected LPS/D-GalN intraperitoneally. One half of the animals was injected metformin (250 mg kg(-1) body mass for one week) prior to LPS/D-GalN treatment. Six hours after the LPS/D-GalN injection, livers were removed, and used for the measurements of dimethylarginine dimethylaminohydrolase (DDAH) and myeloperoxidase (MPO) activities, glutathione (GSH), ADMA and arginine levels. Liver tissues were examined histopathologically. The Kruskal-Wallis (posthoc Mann-Whitney U) test was used for the statistics. LPS/D-GalN injections caused liver injury as evidenced by the activities of aminotransferases and arginase. GSH level and DDAH activity were decreased in the liver. Metformin pretreatment alleviated the activity of serum enzymes, and attenuated histopathological lesions caused by LPS/D-GalN injections. LPS/D-GalN-induced inflammation, as confirmed by the increased MPO activity, created an asymmetrical distribution of arginine and ADMA between the tissue and plasma. Metformin decreased tissue ADMA level while it restored the DDAH activity and GSH. CONCLUSION Our findings showed that metformin administration for one week has a potency to protect liver through regulating ADMA metabolism in LPS/D-GalN-induced injury.
Collapse
Affiliation(s)
- Fatih Bal
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey
| | - Seldag Bekpinar
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey
| | - Yesim Unlucerci
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey
| | - Zeynep Kusku-Kiraz
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey
| | - Semen Önder
- Istanbul University, Istanbul Faculty of Medicine, Department of Pathology, Capa, Istanbul 34093, Turkey
| | - Mujdat Uysal
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey
| | - Figen Gurdol
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul 34093, Turkey.
| |
Collapse
|
30
|
Sayed RH, Khalil WKB, Salem HA, Kenawy SA, El-Sayeh BM. Sulforaphane increases the survival rate in rats with fulminant hepatic failure induced by D-galactosamine and lipopolysaccharide. Nutr Res 2014; 34:982-9. [PMID: 25439027 DOI: 10.1016/j.nutres.2014.10.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/28/2014] [Accepted: 10/02/2014] [Indexed: 12/14/2022]
Abstract
Fulminant hepatic failure (FHF) is a life-threatening clinical syndrome, with liver transplantation being the only effective therapy. Sulforaphane (SFN) is a natural compound that is extracted from cruciferous vegetables and possesses potent anti-inflammatory, antioxidant, and anticancer activities. This study was designed to test the hypothesis that SFN (3 mg/kg) may protect against FHF induced in rats by administering a combination of D-galactosamine (GalN; 300 mg/kg) and lipopolysaccharide (LPS; 30 μg/kg). The rats were given a single intraperitoneal injection of SFN, 1 hour before the FHF induction. Sulforaphane reduced the mortality and alleviated the pathological liver injury. In addition, SFN significantly reduced the increase in serum aminotransferase activities and lipid peroxidation. The glutathione content decreased in the GalN/LPS group, and this decrease was attenuated by SFN. Increases in serum tumor necrosis factor α, interleukin-6, and interleukin-10, which were observed in GalN/LPS-treated rats, were significantly reduced after using SFN. The GalN/LPS treatment increased the expression of superoxide dismutase-1, glutathione peroxidase 2, catalase, and heme oxygenase-1 genes. Sulforaphane inhibited the induction of reactive oxygen species scavenging proteins. Moreover, SFN inhibited GalN/LPS-induced caspase-3 activation and suppressed FAS and FASL expression. These findings suggest that SFN alleviates GalN/LPS-induced liver injury, possibly by exerting antioxidant, anti-inflammatory, and antiapoptotic effects and modulating certain antioxidant defense enzymes.
Collapse
Affiliation(s)
- Rabab H Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Wagdy K B Khalil
- Department of Cell Biology, National Research Centre, Cairo, Egypt
| | - Hesham A Salem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Sanaa A Kenawy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Bahia M El-Sayeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| |
Collapse
|
31
|
Wen JB, Zhu FQ, Chen WG, Jiang LP, Chen J, Hu ZP, Huang YJ, Zhou ZW, Wang GL, Lin H, Zhou SF. Oxymatrine improves intestinal epithelial barrier function involving NF-κB-mediated signaling pathway in CCl4-induced cirrhotic rats. PLoS One 2014; 9:e106082. [PMID: 25171482 PMCID: PMC4149463 DOI: 10.1371/journal.pone.0106082] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 07/31/2014] [Indexed: 12/11/2022] Open
Abstract
Accumulating evidence suggests that intestinal epithelial barrier dysfunction plays an important role in the pathogenesis of hepatic cirrhosis and its complications such as gastrointestinal injury and hepatic encephalopathy. To date, there is no cure for cirrhosis-associated intestinal mucosal lesion and ulcer. This study aimed to investigate the effect of oxymatrine on intestinal epithelial barrier function and the underlying mechanism in carbon tetrachloride (CCl4)-induced cirrhotic rats. Thirty CCl4-induced cirrhotic rats were randomly divided into treatment group, which received oxymatrine treatment (63 mg/kg), and non-treatment group, which received the same dose of 5% glucose solution (vehicle). The blank group (n = 10 healthy rats) received no treatment. Terminal ileal samples were collected for histopathological examination. The expression level of nuclear factor-κB (NF-κB) p65 in ileal tissue was evaluated by immunohistochemistry. The gene and protein expression levels of tumor necrosis factor-α (TNF-α) and interleukin 6 (IL-6) in ileal tissues were analyzed by reverse-transcriptase polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively. Additionally, plasma endotoxin level was determined. In comparison to the blank group, a significant alteration in the morphology of intestinal mucosal villi in the non-treatment group was observed. The intestinal mucosal villi were atrophic, shorter, and fractured, and inflammatory cells were infiltrated into the lamina propria and muscular layer. Besides, serious swell of villi and loose structure of mucous membrane were observed. Oxymatrine reversed the CCl4-induced histological changes and restored intestinal barrier integrity. Moreover, oxymatrine reduced the protein expression level of NF-κB p65, TNF-α, and IL-6, which were elevated in the vehicle-treated group. In addition, the serum endotoxin level was significantly decreased after oxymatrine treatment in CCl4-induced cirrhotic rats. The results indicate that oxymatrine improves intestinal barrier function via NF-κB-mediated signaling pathway and may be used as a new protecting agent for cirrhosis-associated intestinal mucosal damage.
Collapse
Affiliation(s)
- Jian-Bo Wen
- Department of Gastroenterology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
- * E-mail: (JBW); (SFZ)
| | - Fang-Qing Zhu
- Department of Gastroenterology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Wei-Guo Chen
- Department of Gastroenterology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Li-Ping Jiang
- Animal Laboratory, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Jie Chen
- Department of Pharmacology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Zhao-Peng Hu
- Department of Pathology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Yong-Jian Huang
- Department of Clinical Laboratory, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Zhi-Wei Zhou
- Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, Florida, United States of America
| | - Gui-Liang Wang
- Department of Gastroenterology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Hao Lin
- Department of Gastroenterology, the Affiliated Pingxiang Hospital of Southern Medical University, Pingxiang, Jiangxi, China
| | - Shu-Feng Zhou
- Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, Florida, United States of America
- * E-mail: (JBW); (SFZ)
| |
Collapse
|
32
|
Morikawa T, Ninomiya K, Imura K, Yamaguchi T, Akagi Y, Yoshikawa M, Hayakawa T, Muraoka O. Hepatoprotective triterpenes from traditional Tibetan medicine Potentilla anserina. PHYTOCHEMISTRY 2014; 102:169-181. [PMID: 24697904 DOI: 10.1016/j.phytochem.2014.03.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 01/30/2014] [Accepted: 03/04/2014] [Indexed: 06/03/2023]
Abstract
A methanol extract from the tuberous roots of Potentilla anserina (Rosaceae) exhibited hepatoprotective effects against d-galactosamine (d-GalN)/lipopolysaccharide-induced liver injuries in mice. Six triterpene 28-O-monoglucopyranosyl esters, potentillanosides A-F, were isolated from the extract along with 32 known compounds, including 15 triterpenes. The structures of potentillanosides A-F were determined on the basis of spectroscopic properties and chemical evidence. Four ursane-type triterpene 28-O-monoglycosyl esters, potentillanoside A (IC50=46.7μM), 28-O-β-d-glucopyranosyl pomolic acid (IC50=9.5μM), rosamutin (IC50=35.5μM), and kaji-ichigoside F1 (IC50=14.1μM), inhibited d-GalN-induced cytotoxicity in primary cultured mouse hepatocytes. Among these four triterpenes, potentillanoside A, rosamutin, and kaji-ichigoside F1 exhibited in vivo hepatoprotective effects at doses of 50-100mg/kg, p.o. The mode of action was ascribable to the reduction in cytotoxicity caused by d-GalN.
Collapse
Affiliation(s)
- Toshio Morikawa
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Kiyofumi Ninomiya
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Katsuya Imura
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Takahiro Yamaguchi
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Yoshinori Akagi
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Masayuki Yoshikawa
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Takao Hayakawa
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Osamu Muraoka
- Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| |
Collapse
|
33
|
Hackett ES, Mama KR, Twedt DC, Gustafson DL. Evaluation of antioxidant capacity and inflammatory cytokine gene expression in horses fed silibinin complexed with phospholipid. Am J Vet Res 2013; 74:1333-9. [PMID: 24066918 DOI: 10.2460/ajvr.74.10.1333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate antioxidant capacity and inflammatory cytokine gene expression in horses fed silibinin complexed with phospholipid. ANIMALS 5 healthy horses. PROCEDURES Horses consumed increasing orally administered doses of silibinin phospholipid during 4 nonconsecutive weeks (0 mg/kg, 6.5 mg/kg, 13 mg/kg, and 26 mg/kg of body weight, twice daily for 7 days each week). Dose-related changes in plasma antioxidant capacity, peripheral blood cell glutathione concentration and antioxidant enzyme activities, and blood cytokine gene expression were evaluated. RESULTS Plasma antioxidant capacity increased throughout the study period with increasing dose. Red blood cell nicotinamide adenine dinucleotide phosphate:quinone oxidoreductase I activity decreased significantly with increasing doses of silibinin phospholipid. No significant differences were identified in glutathione peroxidase activity, reduced glutathione or oxidized glutathione concentrations, or expression of tumor necrosis factor α, interleukin-1, or interleukin-2. CONCLUSIONS AND CLINICAL RELEVANCE Minor alterations in antioxidant capacity of healthy horses that consumed silibinin phospholipid occurred and suggest that further study in horses with liver disease is indicated.
Collapse
Affiliation(s)
- Eileen S Hackett
- Department of Clinical Sciences, College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, CO. 80523
| | | | | | | |
Collapse
|
34
|
Liu H, Li Q, Liu H, Wu Y, He J. A new style of dimethylnitrosamine induced fulminant hepatitis in mice. HEPATITIS MONTHLY 2013; 13:e12901. [PMID: 24282426 PMCID: PMC3830520 DOI: 10.5812/hepatmon.12901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 07/29/2013] [Accepted: 08/25/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND There is still no suitable mice model that can completely mimic the human fulminant hepatitis, which sets a block for drug effect evaluation and mechanism researching of human fulminant hepatitis. OBJECTIVES The aim of this study was to establish an animal model able to mimic the main features of human fulminant hepatitis. MATERIALS AND METHODS Dimethylnitrosamine (DMN) was peritoneally injected to mice for liver injury induction. Serum biochemicals, and Prothrombin Time were tested, and Prothrombin activity was calculated, the liver tissue pathological changes were evaluated via macroscopic view observation, HE staining, immunochemical staining, and electron microscopy observation. The mRNA levels of TNF-a, Fas, and IL-1beta were tested with quantitative PCR assay. RESULTS The serum levels of both ALT and AST were elevated significantly and showed a high plateau. Liver pathological changes were progressed before 48 hours post DMN injection and then started to restore. The mRNA and protein expression levels of TNF-α and IL-1β were significantly elevated. The PT started to extend from 36 hours and PTA was lower than 40% from then on. CONCLUSIONS This kind of DMN induced mice liver injury is similar to human fulminant hepatitis in main features. This work provided a mice model which could mimic human fulminant hepatitis, and could be valuable for fulminant hepatitis mechanism research and liver protection drug evaluation.
Collapse
Affiliation(s)
- Hanping Liu
- Photonic Chinese Medicine, College of Biophotonics, South China Normal University, Guangzhou China
| | - Qingya Li
- The first Affiliated Hospital of HeNan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Hong Liu
- Tropical Medicine Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuansheng Wu
- The second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyang He
- Tropical Medicine Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
- Corresponding author: Jinyang He, Tropical Medicine Institute, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China. Tel: +86-2036585475, Fax: +86-2036586567, E-mail:
| |
Collapse
|
35
|
Gong X, Zhang L, Jiang R, Wang CD, Yin XR, Wan JY. Hepatoprotective effects of syringin on fulminant hepatic failure induced by D-galactosamine and lipopolysaccharide in mice. J Appl Toxicol 2013; 34:265-71. [PMID: 23620140 DOI: 10.1002/jat.2876] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 01/30/2013] [Accepted: 02/12/2013] [Indexed: 12/27/2022]
Abstract
The prognosis for fulminant hepatic failure (FHF) still remains extremely poor with a high mortality and, therefore, better treatments are urgently needed. Syringin, a main active substance isolated from Eleutherococcus senticosus, has been reported to exhibit immunomodulatory and anti-inflammatory properties. In this study, we investigated the effects and underlying mechanisms of syringin on lipopolysaccharide (LPS) and D-galactosamine (D-GalN)-induced FHF in mice. Mice were administered syringin (10, 30 and 100 mg kg(-1), respectively) intraperitoneally (i.p) 30 min before LPS/D-GalN then mortality and liver injury were evaluated subsequently. We found that syringin dose-dependently attenuated LPS/D-GalN-induced FHF, as indicated by reduced mortality, inhibited aminotransferase and malondialdehyde (MDA) content, an increased glutathione (GSH) concentration and alleviated pathological liver injury. In addition, syringin inhibited LPS/D-GalN-induced hepatic caspase-3 activation and hepatocellular apoptosis, myeloperoxidase (MPO) activity and intercellular adhesion molecule-1 (ICAM-1) expression, as well as hepatic tissues tumor necrosis factor-alpha (TNF-α) production and NF-κB activation in a dose-dependent manner. These experimental data indicate that syringin might alleviate the FHF induced by LPS/D-GalN through inhibiting NF-κB activation to reduce TNF-α production.
Collapse
Affiliation(s)
- Xia Gong
- Department of Anatamy, Chongqing Medical University, Chongqing, 400016, China
| | | | | | | | | | | |
Collapse
|
36
|
Sasakawa Y, Kominami A, Yamamoto K, Nakaoka F, Nakamura M, Nakao M, Abe M, Fukuhama C, Kagawa K. Effects of globin digest and its active ingredient Trp-Thr-Gln-Arg on galactosamine/lipopolysaccharide-induced liver injury in ICR mice. Life Sci 2011; 90:190-9. [PMID: 22154906 DOI: 10.1016/j.lfs.2011.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 10/20/2011] [Accepted: 11/08/2011] [Indexed: 12/13/2022]
Abstract
AIMS We investigated the effects of globin digest (GD) and its active ingredient Trp-Thr-Gln-Arg (WTQR) on galactosamine/lipopolysaccharide (GalN/LPS)-induced liver injury in imprinting control region (ICR) mice. MAIN METHODS The effects of WTQR and GD on the liver injury were examined by measuring the survival rate, serum aminotransferase activities, hepatic components, antioxidant enzyme activities, histopathological analysis, serum levels and hepatic gene expression of tumor necrosis factor-alpha (TNF-α), macrophage inflammatory protein-2 (MIP-2), and nitric oxide (NO) or inducible nitric oxide synthase (iNOS), and nuclear factor-kappa B (NF-κB) p65 content in GalN/LPS-treated ICR mice. RAW264 mouse macrophages were used to confirm the anti-inflammatory effects of WTQR and GD on the macrophages. KEY FINDINGS WTQR and GD increased the survival rate, suppressed the serum aminotransferase activities, serum levels and hepatic gene expression of TNF-α, MIP-2, and NO or iNOS, and nuclear NF-κB p65 content in GalN/LPS-treated mice; decreased the oxidized glutathione content, increased the superoxide dismutase activity, and decreased the histopathological grade values of the hepatocyte necrosis and lobular inflammation in GalN/LPS-injured liver; and suppressed the release levels and gene expression of TNF-α, MIP-2, and NO or iNOS, and nuclear NF-κB p65 content in LPS-stimulated RAW264 macrophages. WTQR and GD may improve the antioxidant defense system and inflammatory status in GalN/LPS-injured liver. SIGNIFICANCE These findings indicate that WTQR and GD have hepatoprotective effects on GalN/LPS-induced liver injury in ICR mice.
Collapse
Affiliation(s)
- Yuka Sasakawa
- MG Pharma Inc., 7-7-25, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Sun S, Guo Y, Zhao G, Zhou X, Li J, Hu J, Yu H, Chen Y, Song H, Qiao F, Xu G, Yang F, Wu Y, Tomlinson S, Duan Z, Zhou Y. Complement and the alternative pathway play an important role in LPS/D-GalN-induced fulminant hepatic failure. PLoS One 2011; 6:e26838. [PMID: 22069473 PMCID: PMC3206060 DOI: 10.1371/journal.pone.0026838] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 10/04/2011] [Indexed: 01/18/2023] Open
Abstract
Fulminant hepatic failure (FHF) is a clinically severe type of liver injury with an extremely high mortality rate. Although the pathological mechanisms of FHF are not well understood, evidence suggests that the complement system is involved in the pathogenesis of a variety of liver disorders. In the present study, to investigate the role of complement in FHF, we examined groups of mice following intraperitoneal injection of LPS/D-GalN: wild-type C57BL/6 mice, wild-type mice treated with a C3aR antagonist, C5aR monoclonal antibody (C5aRmAb) or CR2-Factor H (CR2-fH, an inhibitor of the alternative pathway), and C3 deficient mice (C3⁻/⁻ mice). The animals were euthanized and samples analyzed at specific times after LPS/D-GalN injection. The results show that intraperitoneal administration of LPS/D-GalN activated the complement pathway, as evidenced by the hepatic deposition of C3 and C5b-9 and elevated serum levels of the complement activation product C3a, the level of which was associated with the severity of the liver damage. C3a receptor (C3aR) and C5a receptor (C5aR) expression was also upregulated. Compared with wild-type mice, C3⁻/⁻ mice survived significantly longer and displayed reduced liver inflammation and attenuated pathological damage following LPS/D-GalN injection. Similar levels of protection were seen in mice treated with C3aR antagonist,C5aRmAb or CR2-fH. These data indicate an important role for the C3a and C5a generated by the alternative pathway in LPS/D-GalN-induced FHF. The data further suggest that complement inhibition may be an effective strategy for the adjunctive treatment of fulminant hepatic failure.
Collapse
Affiliation(s)
- Shihui Sun
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yan Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Guangyu Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiaojun Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Junfeng Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Jingya Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Hong Yu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yu Chen
- Beijing You-An Hospital, Artificial Liver Center, Capital University of Medical Sciences, Beijing, China
| | - Hongbin Song
- Institute of Disease Control and Prevention, Academy of Military Medical Science, Beijing, China
| | - Fei Qiao
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Guilian Xu
- Institute of Immunology, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - Fei Yang
- Institute of Immunology, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - Yuzhang Wu
- Institute of Immunology, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - Stephen Tomlinson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Zhongping Duan
- Beijing You-An Hospital, Artificial Liver Center, Capital University of Medical Sciences, Beijing, China
| | - Yusen Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| |
Collapse
|
38
|
Choksi S, Lin Y, Pobezinskaya Y, Chen L, Park C, Morgan M, Li T, Jitkaew S, Cao X, Kim YS, Kim HS, Levitt P, Shih G, Birre M, Deng CX, Liu ZG. A HIF-1 target, ATIA, protects cells from apoptosis by modulating the mitochondrial thioredoxin, TRX2. Mol Cell 2011; 42:597-609. [PMID: 21658601 DOI: 10.1016/j.molcel.2011.03.030] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Revised: 02/04/2011] [Accepted: 03/23/2011] [Indexed: 10/18/2022]
Abstract
The regulation of apoptosis is critical for controlling tissue homeostasis and preventing tumor formation and growth. Reactive oxygen species (ROS) generation plays a key role in such regulation. Here, we describe a HIF-1 target, Vasn/ATIA (anti-TNFα-induced apoptosis), which protects cells against TNFα- and hypoxia-induced apoptosis. Through the generation of ATIA knockout mice, we show that ATIA protects cells from apoptosis through regulating the function of the mitochondrial antioxidant, thioredoxin-2, and ROS generation. ATIA is highly expressed in human glioblastoma, and ATIA knockdown in glioblastoma cells renders them sensitive to hypoxia-induced apoptosis. Therefore, ATIA is not only a HIF-1 target that regulates mitochondrial redox pathways but also a potentially diagnostic marker and therapeutic target in human glioblastoma.
Collapse
Affiliation(s)
- Swati Choksi
- Cell and Cancer Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Bethesda, MD 20892, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Sun H, Chen L, Zhou W, Hu L, Li L, Tu Q, Chang Y, Liu Q, Sun X, Wu M, Wang H. The protective role of hydrogen-rich saline in experimental liver injury in mice. J Hepatol 2011; 54:471-80. [PMID: 21145612 DOI: 10.1016/j.jhep.2010.08.011] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 08/18/2010] [Accepted: 08/31/2010] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Reactive oxygen species (ROS) are considered to play a prominent causative role in the development of various hepatic disorders. Antioxidants have been effectively demonstrated to protect against hepatic damage. Hydrogen (H(2)), a new antioxidant, was reported to selectively reduce the strongest oxidants, such as hydroxyl radicals (·OH) and peroxynitrite (ONOO(-)), without disturbing metabolic oxidation-reduction reactions or disrupting ROS involved in cell signaling. In place of H(2) gas, hydrogen-rich saline (HS) may be more suitable for clinical application. We herein aim to verify its protective effects in experimental models of liver injury. METHODS H(2) concentration in vivo was detected by hydrogen microelectrode for the first time. Liver damage, ROS accumulation, cytokine levels, and apoptotic protein expression were, respectively, evaluated after GalN/LPS, CCl(4), and DEN challenge. Simultaneously, CCl(4)-induced hepatic cirrhosis and DEN-induced hepatocyte proliferation were measured. RESULTS HS significantly increased hydrogen concentration in liver and kidney tissues. As a result, acute liver injury, hepatic cirrhosis, and hepatocyte proliferation were reduced through the quenching of detrimental ROS. Activity of pro-apoptotic players, such as JNK and caspase-3, were also inhibited. CONCLUSIONS HS could protect against liver injury and also inhibit the processes leading to liver cirrhosis and hepatocyte compensatory proliferation.
Collapse
Affiliation(s)
- HanYong Sun
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai 200438, PR China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Lian LH, Jin X, Wu YL, Cai XF, Lee JJ, Nan JX. Hepatoprotective effects of Sedum sarmentosum on D-galactosamine/lipopolysaccharide-induced murine fulminant hepatic failure. J Pharmacol Sci 2010; 114:147-57. [PMID: 20838028 DOI: 10.1254/jphs.10045fp] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
The hepatoprotective effects of sarmentosin-containing extracts of Sedum sarmentosum (SS) in D-galactosamine (D-GalN) / lipopolysaccharide (LPS)-induced fulminant hepatic failure mouse model. Pretreatment with SS markedly protected mice from lethal liver injury, which has known to be associated with an abrupt elevation of serum tumor necrosis factor (TNF)-α level. Indeed, SS significantly blocked the elevation of TNF-α and alanine aminotransferase and aspartate aminotransferase as well. SS also remarkably reduced number of apoptotic hepatocytes and DNA fragmentation in the liver, which correlated with blockade of caspase-3 activation. In addition, SS suppressed the increased expression of toll-like receptor 4 (TLR4). The activation of c-Jun NH(2)-terminal kinase, extracellular signal-regulated kinase, and p38 induced by D-GalN/LPS was also significantly suppressed by SS treatment. Furthermore, SS significantly inhibited the activation of nuclear factor-κB. In RAW 264.7 cells stimulated with LPS, TNF-α release and TLR4 expression was suppressed by SS pretreatment, which was in line with in vivo results. These findings suggested that SS prevents D-GalN/LPS-induced fulminant hepatic failure, and this protection is likely associated with its anti-apoptotic activity and the down-regulation of mitogen activated protein kinase activity associated at least in part with suppressing the transcription of LPS receptors.
Collapse
Affiliation(s)
- Li-Hua Lian
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, China
| | | | | | | | | | | |
Collapse
|
41
|
Zhang L, Li HZ, Gong X, Luo FL, Wang B, Hu N, Wang CD, Zhang Z, Wan JY. Protective effects of Asiaticoside on acute liver injury induced by lipopolysaccharide/D-galactosamine in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 17:811-819. [PMID: 20171071 DOI: 10.1016/j.phymed.2010.01.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 11/05/2009] [Accepted: 01/19/2010] [Indexed: 05/28/2023]
Abstract
Asiaticoside (AS), a triterpenoid product isolated from Centella asiatica, has been described to exhibit anti-in fl ammatory activities in several inflammatory models. However, the effects of AS on liver injury are poorly understood. The present study was undertaken to investigate whether AS is efficacious against Lipopolysaccharide (LPS) /D-galactosamine (D-GalN)-induced acute liver injury in mice and its potential mechanisms. AS (5, 10 and 20 mg/kg/d) was pretreated orally once daily for 3 days before LPS/D-GalN injected in mice. The mortality, hepatic tissue histology, plasma levels of Tumor necrosis factor-alpha (TNF-alpha) and alanine aminotransferase (ALT) and aspartate aminotransferase (AST), hepatic tissue TNF-alpha and caspase-3 activity were measured. Besides, western blotting analysis of phospho-p38 mitogen-activated protein kinase (phospho-p38 MAPK), phospho-c-jun N-terminal kinase (phospho-JNK) and phospho-extracellular signal regulated kinase (phospho-ERK) were determined. As a result, AS showed significant protection as evidenced by the decrease of elevated aminotransferases, hepatocytes apoptosis and caspase-3, alleviation of mortality and improvement of liver pathological injury in a dose-dependent manner. Further, we found that AS dose-dependently reduced the elevation of phospho-p38 MAPK, phospho-JNK, phospho-ERK protein and TNF-alpha mRNA expression in liver tissues and plasma TNF-alpha. These results suggest that AS has remarkable hepatoprotective effects on LPS/D-GalN-induced liver injury and the possible mechanism is related to inhibition of TNF-alpha and MAPKs.
Collapse
Affiliation(s)
- Li Zhang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Cheluvappa R, Denning GM, Lau GW, Grimm MC, Hilmer SN, Le Couteur DG. Pathogenesis of the hyperlipidemia of Gram-negative bacterial sepsis may involve pathomorphological changes in liver sinusoidal endothelial cells. Int J Infect Dis 2010; 14:e857-67. [PMID: 20609608 DOI: 10.1016/j.ijid.2010.02.2263] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2009] [Revised: 11/30/2009] [Accepted: 02/25/2010] [Indexed: 12/11/2022] Open
Abstract
The Gram-negative bacterium Pseudomonas aeruginosa is one of the most common opportunistic pathogens, especially after liver transplantation. Pathophysiological alterations of liver sinusoidal endothelial cells (LSECs) have far-reaching repercussions on the liver and on metabolism. LSECs are perforated with fenestrations, pores that facilitate the transfer of lipoproteins and macromolecules between blood and hepatocytes. Gram-negative bacterial endotoxin (lipopolysaccharide, LPS) and the P. aeruginosa toxin, pyocyanin, have marked effects on LSECs. Initial loss of LSEC porosity (defenestration) induced by P. aeruginosa pyocyanin and LPS may confer subsequent immune tolerance to circulating bacterial antigens and toxins. This review collates the known immune responses of the liver to Gram-negative bacterial toxins, with a focus on LSECs. Hyperlipidemia is an important response to Gram-negative bacterial sepsis. The mechanisms proposed for sepsis-associated hyperlipidemia include tissue lipoprotein lipase inhibition and upregulated hepatic triglyceride production. In this review, we propose defenestration of the LSECs by bacterial toxins as an additional mechanism for the hyperlipidemia of sepsis. Given the role of LSECs in hyperlipidemia and liver allograft rejection, LSEC changes induced by P. aeruginosa toxins including LPS and pyocyanin may have significant clinical implications.
Collapse
Affiliation(s)
- Rajkumar Cheluvappa
- Department of Medicine, St. George Clinical School and Centre for Infection and Inflammation Research, School of Medical Sciences, Wallace Wurth Building, University of New South Wales, Gate 9 High Street, Sydney, NSW 2052, Australia.
| | | | | | | | | | | |
Collapse
|
43
|
Lian LH, Wu YL, Wan Y, Li X, Xie WX, Nan JX. Anti-apoptotic activity of gentiopicroside in D-galactosamine/lipopolysaccharide-induced murine fulminant hepatic failure. Chem Biol Interact 2010; 188:127-33. [PMID: 20558151 DOI: 10.1016/j.cbi.2010.06.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/06/2010] [Accepted: 06/08/2010] [Indexed: 11/18/2022]
Abstract
This study investigated the hepatoprotective effects of gentiopicroside on d-galactosamine (d-GalN) and lipopolysaccharide (LPS)-induced fulminant hepatic failure. Mice were administrated orally with gentiopicroside (40 or 80 mg/kg body weight) at 12h and 1h before d-GalN (700 mg/kg)/LPS (10 microg/kg) injection. Gentiopicroside markedly reduced the increases in serum aminotransferase activities and lipid peroxidation. The glutathione content decreased in d-GalN/LPS alone group, and this decrease was attenuated by gentiopicroside. Increases in serum tumor necrosis factor-alpha (TNF-alpha), which were observed in d-GalN/LPS alone group, were significantly reduced by gentiopicroside. Importantly, gentiopicroside attenuated d-GalN/LPS-induced apoptosis of hepatocytes, as estimated by the caspase-3 cleavage, poly(ADP-ribose) polymerase (PARP) cleavage, and DNA fragmentation. d-GalN/LPS-induced caspase-8 and -9 activation was significantly suppressed by gentiopicroside. Moreover, increased cytosolic cytochrome c protein was reduced by gentiopicroside. Also, the increased ratio of Bax and Bcl-2 protein was significantly attenuated by gentiopicroside. After 6h of d-GalN/LPS injection, phosphorylated c-jun N-terminal kinase (JNK) and extracellular signal regulated kinase (ERK) was significantly increased, whereas phosphorylation JNK and ERK were attenuated by gentiopicroside. Our results suggest that gentiopicroside offers remarkable hepatoprotection against damage induced by d-GalN/LPS related with its anti-apoptotic activities.
Collapse
Affiliation(s)
- Li-Hua Lian
- Key Laboratory for Natural Resource of ChangBai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | | | | | | | | | | |
Collapse
|
44
|
Protective effects of chlorogenic acid on acute hepatotoxicity induced by lipopolysaccharide in mice. Inflamm Res 2010; 59:871-7. [DOI: 10.1007/s00011-010-0199-z] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 12/21/2009] [Accepted: 04/06/2010] [Indexed: 01/17/2023] Open
|
45
|
Morikawa T, Pan Y, Ninomiya K, Imura K, Matsuda H, Yoshikawa M, Yuan D, Muraoka O. Acylated phenylethanoid oligoglycosides with hepatoprotective activity from the desert plant Cistanche tubulosa1. Bioorg Med Chem 2010; 18:1882-90. [DOI: 10.1016/j.bmc.2010.01.047] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Revised: 01/15/2010] [Accepted: 01/16/2010] [Indexed: 12/18/2022]
|
46
|
Palmatine attenuates d-galactosamine/lipopolysaccharide-induced fulminant hepatic failure in mice. Food Chem Toxicol 2010; 48:222-8. [DOI: 10.1016/j.fct.2009.10.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Revised: 09/08/2009] [Accepted: 10/01/2009] [Indexed: 11/20/2022]
|
47
|
Yaeesh S, Jamal Q, Shah AJ, Gilani AH. Antihepatotoxic activity of Saussurea lappa
extract on D-galactosamine and lipopolysaccharide-induced hepatitis in mice. Phytother Res 2009; 24 Suppl 2:S229-32. [DOI: 10.1002/ptr.3089] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
48
|
Cheluvappa R, Denning GM, Lau GW, Grimm MC, Hilmer SN, Le Couteur DG. Pseudomonas aeruginosa and the hyperlipidaemia of sepsis. Pathology 2009; 41:615-21. [DOI: 10.3109/00313020903257764] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
49
|
Song HL, Lv S, Liu P. The roles of tumor necrosis factor-alpha in colon tight junction protein expression and intestinal mucosa structure in a mouse model of acute liver failure. BMC Gastroenterol 2009; 9:70. [PMID: 19772664 PMCID: PMC2761933 DOI: 10.1186/1471-230x-9-70] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2009] [Accepted: 09/22/2009] [Indexed: 01/30/2023] Open
Abstract
Background Spontaneous bacterial peritonitis (SBP) is a common clinical disease and one of the most severe complications of acute liver failure (ALF). Although the mechanism responsible for SBP is unclear, cytokines play an important role. The aim of this study was to investigate the effects of tumor necrosis factor-alpha (TNF-α) on the structure of the intestinal mucosa and the expression of tight junction (Zona Occludens 1; ZO-1) protein in a mouse model of ALF. Methods We induced ALF using D-galactosamine/lipopolysaccharide (GalN/LPS) or GalN/TNF-α and assessed the results using transmission electron microscopy, immunohistochemistry, Western blotting, ELISA and real-time quantitative PCR. The effects of administration of anti-TNF-α IgG antibody or anti-TNF-α R1 antibody before administration of GalN/LPS or GalN/TNF-α, respectively, on TNF-α were also assessed. Results Morphological abnormalities in the intestinal mucosa of ALF mice were positively correlated with serum TNF-α level. Electron microscopic analysis revealed tight junction (TJ) disruptions, epithelial cell swelling, and atrophy of intestinal villi. Gut bacteria invaded the body at sites where TJ disruptions occurred. Expression of ZO-1 mRNA was significantly decreased in both ALF models, as was the level of ZO-1 protein. Prophylactic treatment with either anti-TNF-α IgG antibody or anti-tumor necrosis factor-a receptor1 (anti-TNF-α R1) antibody prevented changes in intestinal tissue ultrastructure and ZO-1 expression. Conclusion TNF-α affects the structure of the intestinal mucosa, decreases expression of ZO-1, and affects the morphology of the colon in a mouse model of ALF. It also may participate in the pathophysiological mechanism of SBP complicated to ALF.
Collapse
Affiliation(s)
- Hong-Li Song
- Department of Infectious Diseases, The First Affiliated Hospital, China Medical University, Shenyang 110001, Liaoning Province, PR China.
| | | | | |
Collapse
|
50
|
Song HL, Lv S, Liu P. The roles of tumor necrosis factor-alpha in colon tight junction protein expression and intestinal mucosa structure in a mouse model of acute liver failure. BMC Gastroenterol 2009. [PMID: 19772664 DOI: 10.1186/1471- 230x-9-70] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Spontaneous bacterial peritonitis (SBP) is a common clinical disease and one of the most severe complications of acute liver failure (ALF). Although the mechanism responsible for SBP is unclear, cytokines play an important role. The aim of this study was to investigate the effects of tumor necrosis factor-alpha (TNF-alpha) on the structure of the intestinal mucosa and the expression of tight junction (Zona Occludens 1; ZO-1) protein in a mouse model of ALF. METHODS We induced ALF using D-galactosamine/lipopolysaccharide (GalN/LPS) or GalN/TNF-alpha and assessed the results using transmission electron microscopy, immunohistochemistry, Western blotting, ELISA and real-time quantitative PCR. The effects of administration of anti-TNF-alpha IgG antibody or anti-TNF-alpha R1 antibody before administration of GalN/LPS or GalN/TNF-alpha, respectively, on TNF-alpha were also assessed. RESULTS Morphological abnormalities in the intestinal mucosa of ALF mice were positively correlated with serum TNF-alpha level. Electron microscopic analysis revealed tight junction (TJ) disruptions, epithelial cell swelling, and atrophy of intestinal villi. Gut bacteria invaded the body at sites where TJ disruptions occurred. Expression of ZO-1 mRNA was significantly decreased in both ALF models, as was the level of ZO-1 protein. Prophylactic treatment with either anti-TNF-alpha IgG antibody or anti-tumor necrosis factor-a receptor1 (anti-TNF-alpha R1) antibody prevented changes in intestinal tissue ultrastructure and ZO-1 expression. CONCLUSION TNF-alpha affects the structure of the intestinal mucosa, decreases expression of ZO-1, and affects the morphology of the colon in a mouse model of ALF. It also may participate in the pathophysiological mechanism of SBP complicated to ALF.
Collapse
Affiliation(s)
- Hong-Li Song
- Department of Infectious Diseases, The First Affiliated Hospital, China Medical University, Shenyang 110001, Liaoning Province, PR China.
| | | | | |
Collapse
|