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Gao B, Chen Z, Shi M, Mo Y, Xiao H, Xie Y, Lin M, Chi X. Research landscape and frontiers of non-alcoholic steatohepatitis-associated hepatocellular carcinoma: a bibliometric and visual analysis. Front Pharmacol 2023; 14:1240649. [PMID: 37771721 PMCID: PMC10523561 DOI: 10.3389/fphar.2023.1240649] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/04/2023] [Indexed: 09/30/2023] Open
Abstract
Background: Due to the widespread prevalence of caloric excess and sedentary behavior on a global scale, there is a growing body of epidemiological evidence indicating that non-alcoholic steatohepatitis (NASH) has rapidly become a leading aetiology underlying of hepatocellular carcinoma (HCC). In light of the escalating incidence of NASH-associated HCC (NASH-HCC), it is imperative to mitigate the impending burden. While there has been an increase in global awareness regarding this issue, it has yet to be examined from a bibliometric standpoint. Therefore, this study seeks to provide a comprehensive bibliometric analysis to characterize the evolution of this field. Method: The present study utilized the Web of Science Core Collection (WoSCC) to identify publications pertaining to NASH-HCC over the past 2 decades. Employing Vosviewer 1.6.19, CiteSpace 6.2.R2, and the Analysis Platform of Bibliometrics, the study conducted an analysis of various dimensions including the quantity of publications, countries, institutions, journals, authors, co-references, keywords, and trend topics in this field. Results: A comprehensive analysis of 3,679 publications pertaining to NASH-HCC, published between 1 January 2002 and 1 April 2023, was conducted. The field in question experienced a rapid increase in publications, with the United States serving as the central hub. Collaboration between institutions was more extensive than that between countries. Notably, HEPATOLOGY (n = 30,168) emerged as the most impactful journal, and Zobair M. Younossi (n = 10,025) as the most frequently cited author in co-citations. The most commonly cited references were KLEINER DE, 2005, HEPATOLOGY (n = 630), followed by YOUNOSSI ZM, 2016, HEPATOLOGY (n = 493). The author keywords were categorized into three distinct clusters, namely, Cluster 1 (Mechanism), Cluster 2 (Factors), and Cluster 3 (Diagnosis). Analysis of high-frequency co-occurring keywords and topical trends revealed emphasis on molecular mechanisms in current research. "macrophages" and "tumor microenvironment" were active research hotspots at present in this field. Conclusion: A bibliometric analysis was performed for the first time on publications pertaining to non-alcoholic steatohepatitis-hepatocellular carcinoma, uncovering co-research networks, developmental trends, and current research hotspots. The emerging frontiers of this field focused on the macrophages and tumor microenvironment, especially the tumor-associated macrophages, offering a fresh perspective for future research directions.
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Affiliation(s)
- Bowen Gao
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhiheng Chen
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Meijie Shi
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Yousheng Mo
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Huanming Xiao
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Yubao Xie
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Ming Lin
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Xiaoling Chi
- Department of Hepatology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
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Ali FEM, Abd El-Aziz MK, Sharab EI, Bakr AG. Therapeutic interventions of acute and chronic liver disorders: A comprehensive review. World J Hepatol 2023; 15:19-40. [PMID: 36744165 PMCID: PMC9896501 DOI: 10.4254/wjh.v15.i1.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/17/2022] [Accepted: 12/21/2022] [Indexed: 01/16/2023] Open
Abstract
Liver disorders are one of the most common pathological problems worldwide. It affects more than 1.5 billion worldwide. Many types of hepatic cells have been reported to be involved in the initiation and propagation of both acute and chronic liver diseases, including hepatocytes, Kupffer cells, sinusoidal endothelial cells, and hepatic stellate cells (HSCs). In addition, oxidative stress, cytokines, fibrogenic factors, microRNAs, and autophagy are also involved. Understanding the molecular mechanisms of liver diseases leads to discovering new therapeutic interventions that can be used in clinics. Recently, antioxidant, anti-inflammatory, anti-HSCs therapy, gene therapy, cell therapy, gut microbiota, and nanoparticles have great potential for preventing and treating liver diseases. Here, we explored the recent possible molecular mechanisms involved in the pathogenesis of acute and chronic liver diseases. Besides, we overviewed the recent therapeutic interventions that targeted liver diseases and summarized the recent studies concerning liver disorders therapy.
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Affiliation(s)
- Fares EM Ali
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | | | - Elham I Sharab
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Adel G Bakr
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
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Laursen TL, Mellemkjær A, Møller HJ, Grønbæk H, Kazankov K. Spotlight on liver macrophages for halting injury and progression in non-alcoholic fatty liver disease. Expert Opin Ther Targets 2022; 26:697-705. [PMID: 36205054 DOI: 10.1080/14728222.2022.2132145] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Non-alcoholic fatty liver disease (NAFLD) is considered the hepatic manifestation of the metabolic syndrome and is rapidly emerging as the leading cause of liver-related morbidity and mortality. Macrophages play an essential role in the development and progression of NAFLD. AREAS COVERED In this review, we provide an update on recent studies of drugs, which directly or indirectly affect macrophages in NAFLD, and discuss the implication of macrophage biomarkers to monitor the disease stage and progression/regression. EXPERT OPINION There is an unmet need for better understanding of disease pathogenesis from hepatic fat accumulation to disease progression with inflammation and fibrosis. We expect that future research will uncover additional objects/pathways as treatment targets. We speculate that this will involve better characterization of the gut microbiome, damage-associated molecular patterns (DAMPS) or molecules and pathways involved in development of DAMPS, and advanced molecular biology studies including single-cell sequencing of macrophage subpopulations. In addition, we speculate that studies focusing on pharmaceuticals that improve insulin resistance, diminish the metabolic syndrome and reduce fibrosis will prevail.
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Affiliation(s)
- Tea Lund Laursen
- Department of Medicine, Randers Regional Hospital, Randers, Denmark
| | - Anders Mellemkjær
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Holger Jon Møller
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Henning Grønbæk
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Konstantin Kazankov
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
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Enomoto M, Kaji K, Nishimura N, Fujimoto Y, Murata K, Takeda S, Tsuji Y, Fujinaga Y, Takaya H, Kawaratani H, Namisaki T, Akahane T, Yoshiji H. Rifaximin and lubiprostone mitigate liver fibrosis development by repairing gut barrier function in diet-induced rat steatohepatitis. Dig Liver Dis 2022; 54:1392-1402. [PMID: 35514019 DOI: 10.1016/j.dld.2022.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 04/15/2022] [Accepted: 04/20/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Although gut-derived lipopolysaccharide (LPS) affects the progression of non-alcoholic steatohepatitis (NASH) pathogenesis, few studies have focused on this relationship to develop treatments for NASH. AIMS To explore the effects of combination with rifaximin and lubiprostone on NASH liver fibrosis through the modulation of gut barrier function. METHODS To induce steatohepatitis, F344 rats were fed a choline-deficient l-amino acid-defined (CDAA) diet for 12 weeks and received oral administration of rifaximin and/or lubiprostone. Histological, molecular, and fecal microbial analyses were performed. Barrier function in Caco-2 cells were assessed by in vitro assays. RESULTS Combination rifaximin/lubiprostone treatment significantly suppressed macrophage expansion, proinflammatory responses, and liver fibrosis in CDAA-fed rats by blocking hepatic translocation of LPS and activation of toll-like receptor 4 signaling. Rifaximin and lubiprostone improved intestinal permeability via restoring tight junction proteins (TJPs) with the intestinal activation of pregnane X receptor and chloride channel-2, respectively. Moreover, this combination increased the abundance of Bacteroides, Lactobacillus, and Faecalibacterium as well as decreased that of Veillonella resulting in an increase of fecal short-chain fatty acids and a decrease of intestinal sialidase activity. Both agents also directly suppressed the LPS-induced barrier dysfunction and depletion of TJPs in Caco-2 cells. CONCLUSION The combination of rifaximin and lubiprostone may provide a novel strategy for treating NASH-related fibrosis.
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Affiliation(s)
- Masahide Enomoto
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Kosuke Kaji
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan.
| | - Norihisa Nishimura
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Yuki Fujimoto
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Koji Murata
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Soichi Takeda
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Yuki Tsuji
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Yukihisa Fujinaga
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Hiroaki Takaya
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Hideto Kawaratani
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Tadashi Namisaki
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Takemi Akahane
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Hitoshi Yoshiji
- Department of Gastroenterology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
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TAK-242 Ameliorates Hepatic Fibrosis by Regulating the Liver-Gut Axis. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4949148. [PMID: 36017390 PMCID: PMC9398794 DOI: 10.1155/2022/4949148] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022]
Abstract
Objective. The aims of this study were to investigate the impact of TAK-242 on the Toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear transcription factor-κB (NF-κB) signal transduction pathway in rats with hepatic fibrosis (HF) using the liver gut axis and to investigate the molecular mechanism of its intervention on HF. Methods. SPF grade SD male rats were randomly allocated to the control, model, and TAK-242 groups. For 8 weeks, the model and TAK-242 groups received 3 mL·kg-1 (the initial dose 5 mL·kg-1) intraperitoneal injections of 40% CCL4 olive oil solution. TAK-242 (5 mg·kg-1) was administered once a day for 5 days after modeling. The pathological alterations of liver and small intestine tissues in each group were observed using H&E and Masson staining. ELISA was used to measure serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), direct bilirubin (DBIL), total bilirubin (TBIL), interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor alpha (TNF-α). RT-qPCR was utilized to identify the mRNA expression level of IL-1β, IL-6, TNF-α, TLR4, MyD88, and NF-κB in rat liver and small intestine tissues. The protein level of IL-1β, IL-6, TNF-α, TLR4, MyD88, and NF-κB protein in rat liver and small intestine tissues was determined utilizing Western blot and IHC. Results. TAK-242 significantly reduced AST, ALT, TBIL, and DBIL expression in HF rats’ serum (
) and alleviated liver tissue injury. Hematoxylin-eosin (H&E) and Masson staining revealed inflammatory cell infiltration and fibrous proliferation in the liver and small intestine tissue in the model group and partial cell swelling in the TAK-242 group, which indicated a considerable improvement compared to the model group. RT-qPCR, Western blot, and IHC data indicated that TAK-242 reduced the IL-1β, IL-6, TNF-α, TLR4, MyD88, and NF-κB expression in the liver and small intestine tissues of HF rats. Conclusion. TAK-242 might downregulate the TLR4/MyD88/NF-κB signal pathway through the liver-gut axis, suppress the inflammatory response, and eventually alleviate HF in rats.
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Benefits of Physical Exercise as Approach to Prevention and Reversion of Non-Alcoholic Fatty Liver Disease in Children and Adolescents with Obesity. CHILDREN 2022; 9:children9081174. [PMID: 36010064 PMCID: PMC9406958 DOI: 10.3390/children9081174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 12/15/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is an important health concern during childhood; indeed, it is the most frequent cause of chronic liver diseases in obese children. No valid pharmacological therapies for children affected by this condition are available, and the recommended treatment is lifestyle modification, usually including nutrition and exercise interventions. In this narrative review, we summarized up-to-date information on the benefits of physical exercise on NAFLD in children and adolescents with obesity. The role of exercise as non-pharmacological treatment was emphasized in order to provide recent advances on this topic for clinicians not deeply involved in the field. Several studies on obese children and adults confirm the positive role of physical activity (PA) in the treatment of NAFLD, but to date, there are no pediatric randomized clinical trials on exercise versus usual care. Among the pathogenic mechanisms involved in the PA effects on NAFLD, the main players seem to be insulin resistance and related inflammation, oxidative stress, and gut dysbiosis, but further evaluations are necessary to deeply understand whether these factors are correlated and how they synergistically act. Thus, a deeper research on this theme is needed, and it would be extremely interesting.
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ELIAS MONIQUEB, TEODORO ANDERSONJ, LEMOS FELIPES, BERNARDES EMERSONS, SANTOS SOFIAN, PACHECO SIDNEY, OLIVEIRA FELIPELEITEDE. Lycopene induces bone marrow lymphopoiesis and differentiation of peritoneal IgA-producing cells. AN ACAD BRAS CIENC 2022; 94:e20210002. [DOI: 10.1590/0001-3765202220210002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 02/10/2022] [Indexed: 11/22/2022] Open
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Liu YF, Niu GC, Li CY, Guo JB, Song J, Li H, Zhang XL. Mechanism of Ulcerative Colitis-Aggravated Liver Fibrosis: The Activation of Hepatic Stellate Cells and TLR4 Signaling Through Gut-Liver Axis. Front Physiol 2021; 12:695019. [PMID: 34603071 PMCID: PMC8484790 DOI: 10.3389/fphys.2021.695019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/25/2021] [Indexed: 12/12/2022] Open
Abstract
Background: The progression of liver disorders is frequently associated with inflammatory bowel disease through the gut-liver axis. However, no direct evidence showed the mechanisms of ulcerative colitis (UC) in the development of liver fibrosis per se. Thus, this study aimed to evaluate the effects of UC on liver fibrosis and its potential mechanism in the experimental model. Methods: Male C57BL/6 mice were allocated into five groups (n = 10 per group) to receive either drinking water (control), 2% dextran sulfate sodium (DSS), olive oil, carbon tetrachloride (CCl4) or DSS + CCl4 for 4 cycles. Blood was collected for biochemical analysis. Colons were excised for the evaluation of colon length and morphological score. Liver, colon, and mesenteric lymph nodes (MLNs) were collected for histopathological staining, expression analysis, and bacterial translocation assay to evaluate the inflammation, fibrosis, the activation of hepatic stellate cells (HSCs), and gut barrier function. Results: DSS caused severe colitis in mice treated or treated with CCl4, as evident from the elevation of disease activity index (DAI), histological abnormalities, and increased pro-inflammatory cytokines (TNF-α, IFN-γ, and IL-17A). Histopathological staining revealed that DSS treatment aggravated the CCl4-induced extracellular matrix deposition, liver fibrosis, and inflammation in mice. Additionally, biochemical and expression analysis indicated the DSS treatment caused the increase of hydroxyproline and pro-inflammatory cytokines, as well as the abnormal liver function indexes in CCl4-induced mice. Gut barrier function was impaired in DSS- and DSS + CCl4-treated mice, manifesting as the increase in bacterial translocation and lipopolysaccharide level, and the reduction in tight junction proteins (occluding, claudin-1 and ZO-1) expression. Further, the activations of HSCs and TLR4 signaling pathway were observed after DSS + CCl4 treatment, presenting with the increase in expression of α-SMA, vimentin, TGF-β, collagen type I, collagen type II, TIMP-2, TLR4, TRAF6, and NF-κB p65, and a decrease in GFAP and MMP-2 expression. Conclusion: The present study verified that UC aggravated CCl4-induced liver injury, inflammation, and fibrosis in mice through the gut-liver axis. Gut barrier dysfunction in UC leads to bacterial translocation and elevated lipopolysaccharide, which may promote the activation of TLR4 signaling and HSCs in the liver.
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Affiliation(s)
- Yu-Feng Liu
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.,Department of Gastroenterology, Dingzhou People's Hospital of Hebei Province, Dingzhou, China
| | - Guo-Chao Niu
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chen-Yang Li
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jin-Bo Guo
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jia Song
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Li
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiao-Lan Zhang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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Pan MX, Zheng CY, Deng YJ, Tang KR, Nie H, Xie JQ, Liu DD, Tu GF, Yang QH, Zhang YP. Hepatic protective effects of Shenling Baizhu powder, a herbal compound, against inflammatory damage via TLR4/NLRP3 signalling pathway in rats with nonalcoholic fatty liver disease. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2021; 19:428-438. [PMID: 34426178 DOI: 10.1016/j.joim.2021.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 05/18/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVE High-fat diet (HFD) and inflammation are two key contributors to nonalcoholic fatty liver disease (NAFLD). Shenling Baizhu powder (SLBZP), a classical herbal compound, has been successfully used to alleviate NAFLD. However, its specific mechanisms are not fully understood. In this study, we assessed the anti-NAFLD effect of SLBZP in vivo. METHODS Rats were fed an HFD with or without SLBZP or with probiotics. At the end of week 16, an echo magnetic resonance imaging (EchoMRI) body composition analyser was used to quantitatively analyse body composition; a micro-computed tomography (micro-CT) imaging system was used to evaluate whole body and liver fat; and the Moor full-field laser perfusion imager 2 was used to assess liver microcirculation, after which, all rats were sacrificed. Then, biochemical indicators in the blood and the ultrastructure of rat livers were evaluated. Protein expression related to the liver Toll-like receptor 4 (TLR4)/Nod-like receptor family pyrin domain-containing 3 (NLRP3) signalling pathway was assessed using Western blot analysis. Further, high-throughput screening of 29 related inflammatory factors in liver tissue was performed using a cytokine array. RESULTS SLBZP supplementation reduced body weight, serum free fatty acid, and insulin resistance index (P < 0.05). It also ameliorated liver microcirculation and ultrastructural abnormalities. EchoMRI and micro-CT quantitative analyses showed that treatment with SLBZP reduced fat mass and visceral fat (P < 0.05 and P < 0.01, respectively). In addition, SLBZP decreased the expression of lipopolysaccharide (LPS)-activated TLR4/NLRP3 signalling pathway-related proteins and altered the expression levels of some inflammatory cytokines in liver tissues. CONCLUSION SLBZP can inhibit NLRP3 inflammasome activation and interleukin-1β release by suppressing LPS-induced TLR4 expression in rats with HFD-induced NAFLD. Thus, SLBZP may be beneficial for the prevention and treatment of inflammatory damage and associated diseases.
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Affiliation(s)
- Mao-Xing Pan
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Chui-Yang Zheng
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Yuan-Jun Deng
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Kai-Rui Tang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Huan Nie
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Ji-Qian Xie
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Dong-Dong Liu
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Gui-Fang Tu
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China
| | - Qin-He Yang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China.
| | - Yu-Pei Zhang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China.
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Hussain M, Umair Ijaz M, Ahmad MI, Khan IA, Bukhary SUF, Khan W, Hussain S, Hashmi MS, Li C. Gut inflammation exacerbates hepatic injury in C57BL/6J mice via gut-vascular barrier dysfunction with high-fat-incorporated meat protein diets. Food Funct 2021; 11:9168-9176. [PMID: 33026380 DOI: 10.1039/d0fo02153a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM Meat and its derivatives provide nutrients essential for human health. However, meat consumption, along with excessive fat intake, has been associated with gut inflammation, intestinal barrier dysfunction and alterations in gut microbiota. Herein, we investigated whether and how these changes in the intestinal barrier system affect the gut liver axis and hepatic injury and eventually lead to the progression of liver syndrome such as NAFLD. METHODS Mice were fed with high fat (60% kcal) or low fat (12% kcal) along with soybean (control), chicken and pork proteins (HFCH, HFP, LFCH, and LFP) for 12 weeks. The biomarkers for liver injury were investigated after meat protein intake along with the high fat. FINDINGS Greater amount of fat vacuoles visible in the H&E staining increased the inflammatory cell infiltration and disorganized liver structures were observed in the HFP-fed mice. Oil Red O staining revealed that the HFP-fed and HFCH-fed mice showed more lipid droplets, confirming the increased hepatic lipid accumulation. Potential serum markers for NAFLD, ALT and AST were increased in the HF meat diet groups. Key genes responsible for hepatic inflammation and lipogenesis, such as MCP-1, IL1-β and TNF-α were upregulated. HF meat protein diet-fed mice exhibited signs of compromised liver with increased levels of endotoxin in the liver and its binding protein in serum, upregulation of TLRs in the liver, and significant increase in TG, TC, LDL-C and HDL-C concentrations. SIGNIFICANCE Intestinal inflammation and barrier dysfunction aggravate liver injury and fibrosis due to the intake of HF meat protein diets in mice, which may contribute to the progress of liver injury and associated complications. Gut inflammation may directly contribute to the development of NAFLD, especially of the gut vascular barricade dysfunction.
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Affiliation(s)
- Muzahir Hussain
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China. and Department of Horticulture, Abdul Wali Khan University Mardan, KPK, Pakistan and Department of Food Science and Technology, The University of Agriculture Peshawar, Peshawar, KPK 26000, Pakistan
| | - Muhammad Umair Ijaz
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Muhammad Ijaz Ahmad
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Iftikhar Ali Khan
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Syed Umar Farooq Bukhary
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Waqar Khan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Sayed Hussain
- Department of Horticulture, Abdul Wali Khan University Mardan, KPK, Pakistan
| | - Majid Suhail Hashmi
- Department of Food Science and Technology, The University of Agriculture Peshawar, Peshawar, KPK 26000, Pakistan
| | - Chunbao Li
- Key Laboratory of Meat Processing and Quality Control, MOE; Key Laboratory of Meat Processing, MARA; Jiangsu Collaborative Innovation Centre of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, PR China.
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Jantararussamee C, Rodniem S, Taweechotipatr M, Showpittapornchai U, Pradidarcheep W. Hepatoprotective Effect of Probiotic Lactic Acid Bacteria on Thioacetamide-Induced Liver Fibrosis in Rats. Probiotics Antimicrob Proteins 2021; 13:40-50. [PMID: 32468435 DOI: 10.1007/s12602-020-09663-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hepatic fibrosis is a reversible wound-healing response characterized by the accumulation of extracellular matrix. Probiotics have been used to prevent and treat various disorders. The aim of the present study was to investigate the hepatoprotective effects of probiotic lactic acid bacteria (mixture of Lactobacillus paracasei, Lactobacillus casei, and Weissella confusa) on thioacetamide (TAA)-induced liver fibrosis in rats. Thirty-five male Wistar rats were randomly divided into five groups: (1) control, (2) TAA, (3) TAA+probiotics, (4) TAA+silymarin, and (5) probiotics. Group 1 rats received a standard diet. In groups 2-4, fibrosis was induced by intraperitoneal injection of TAA (200 mg/kg BW) 3 times weekly for 8 consecutive weeks. Group 4 received TAA plus 100 mg/kg BW of silymarin 2 times weekly. Groups 3 and 5 were fed 109 CFU/mL viable microbial cells daily by gavage. The rats were sacrificed after 8 weeks of treatment. Liver tissues were collected immediately and processed for histopathological, lipid peroxidation, and Western blot analyses of TNF-α, TGF-β1, and α-SMA. Blood serum was collected to measure liver enzymes. Rats in the TAA groups suffered from hepatic injury (increased serum enzyme levels, liver inflammation, and increased concentration of TNF-α, TGF-β1, and α-SMA proteins) and extensive liver fibrosis. In contrast, TAA-treated rats receiving probiotics or silymarin had significantly lower serum enzyme levels, less inflammation, and less fibrosis. Liver damage was lower in the TAA+probiotics-treated group. Consumption of a mixture of probiotic lactic acid bacteria attenuates the development of liver fibrosis.
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Affiliation(s)
- Chittapon Jantararussamee
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23 Rd, Bangkok, 10110, Thailand
| | - Siripa Rodniem
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23 Rd, Bangkok, 10110, Thailand
| | - Malai Taweechotipatr
- Department of Microbiology, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23 Rd, Bangkok, 10110, Thailand
| | - Udomsri Showpittapornchai
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23 Rd, Bangkok, 10110, Thailand
| | - Wisuit Pradidarcheep
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23 Rd, Bangkok, 10110, Thailand.
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4-Acetylantroquinonol B ameliorates nonalcoholic steatohepatitis by suppression of ER stress and NLRP3 inflammasome activation. Biomed Pharmacother 2021; 138:111504. [PMID: 33773468 DOI: 10.1016/j.biopha.2021.111504] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Nonalcoholic fatty liver disease (NAFLD) is an inflammatory lipotoxic disorder with a prevalence of over 25% worldwide. However, safe and effective therapeutic agents for the management of NAFLD are still lacking. We aimed to investigate the hepatoprotective effect and molecular mechanism of 4-acetylantroquinonol B (4-AAQB), a natural ubiquinone derivative obtained from the mycelia of Antrodia cinnamomea. METHODS RAW264.7 and J774A.1 cells were treated with 4-AAQB and then stimulated with LPS or tunicamycin (TM) for 24 h. Inflammatory responses, markers of endoplasmic reticulum (ER) stress, and NOD-like receptor protein 3 (NLRP3) inflammasome were analyzed in both cell lines. In the applied in vivo model, male C57BL/6J mice were fed with chow or a methionine/choline-deficient (MCD) diet along with vehicle or 4-AAQB (10 mg/kg, i.p. injected, once a day) for 10 consecutive days. Plasma levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were measured. Liver tissues were analyzed using histological techniques; protein levels involved in ER stress, NLRP3 inflammasome, and inflammatory responses were measured. RESULTS 4-AAQB significantly ameliorated the plasma levels of ALT and AST as well as the NAFLD activity score (NAS) in mice fed the MCD diet. In addition, 4-AAQB suppressed inflammatory responses, ER stress, and NLRP3 inflammasome activation, but increased the nuclear factor erythroid 2-related factor 2 (Nrf2) and Sirtuin 1 (SIRT1) signaling pathways in both in vitro and in vivo models. CONCLUSIONS We suggest that 4-AAQB treatment might be a tangible therapeutic strategy in the management of NAFLD/NASH.
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Kjær MB, George J, Kazankov K, Grønbæk H. Current perspectives on the pathophysiology of metabolic associated fatty liver disease: are macrophages a viable target for therapy? Expert Rev Gastroenterol Hepatol 2021; 15:51-64. [PMID: 32878486 DOI: 10.1080/17474124.2020.1817740] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Metabolic associated fatty liver disease (MAFLD) is a new nomenclature for fatty liver replacing nonalcoholic fatty liver disease (NAFLD). MAFLD has emerged as the leading cause of liver-related morbidity and mortality with increasing incidence due to its close association with the global epidemic of obesity and type 2 diabetes mellitus. Macrophages play a key role in MAFLD development and progression of steatohepatitis and fibrosis. Therefore, targeting macrophages may be a new therapeutic approach for MAFLD and MAFLD with steatohepatitis. AREAS COVERED We provide a comprehensive review of the significant role of macrophages in MAFLD. Further, we evaluate the current status of lifestyle interventions and pharmacological treatments with a focus on effects mediated through direct or indirect targeting of macrophages. EXPERT OPINION Targeting macrophages holds promise as a treatment option for the management of MAFLD and steatohepatitis. Improved stratification of patients according to MAFLD phenotype would contribute to more adequate design enhancing the yield of clinical trials ultimately leading to personalized medicine for patients with MAFLD. Furthermore, reflecting the multifactorial pathogenesis of MAFLD, combination therapies based on the various pathophysiological driver events including as pertinent to this review, macrophage recruitment, polarization and action, present an intriguing target for future investigation.
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Affiliation(s)
- Mikkel Breinholt Kjær
- Department of Hepatology and Gastroenterology, Aarhus University Hospital , Aarhus, Denmark
| | - Jacob George
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney , Sydney, Australia
| | - Konstantin Kazankov
- Department of Hepatology and Gastroenterology, Aarhus University Hospital , Aarhus, Denmark
| | - Henning Grønbæk
- Department of Hepatology and Gastroenterology, Aarhus University Hospital , Aarhus, Denmark
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Translational insight into prothrombotic state and hypercoagulation in nonalcoholic fatty liver disease. Thromb Res 2020; 198:139-150. [PMID: 33340925 DOI: 10.1016/j.thromres.2020.12.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/17/2020] [Accepted: 12/07/2020] [Indexed: 02/08/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is an emerging and threatening pathological condition, ranging from fatty liver (FL) to chronic steatohepatitis (NASH), liver cirrhosis, and eventually to hepatocellular carcinoma (HCC). Recent findings suggest that patients with NAFLD have a higher risk of cardiovascular events and thromboembolism and that this risk is independent of metabolic diseases that are frequently associated with NAFLD, such as diabetes, hyperlipidaemia, and obesity. The vascular involvement of NAFLD might be considered its systemic burden, conditioning higher mortality in patients affected by the disease. These clinical findings suggested the existence of a prothrombotic state in NAFLD, which is partially unexplored and whose underlying mechanisms are to date not completely understood. Here, we review the mechanisms involved in the pathogenesis of the prothrombotic state in NAFLD across the progression from the healthy liver through the different stages of the disease. We focused on the possible role of several metabolic features of NAFLD possibly leading to hypercoagulation other than endothelial and platelet activation, such as insulin-resistance, nitric oxide production regulation, and gut microbiota homeostasis. Also, we analysed the involvement of plasminogen activator inhibitor-1 (PAI-1) and thromboinflammation taking place in NAFLD. Finally, we described factors striking a prothrombotic imbalance in NASH cirrhosis, with a particular focus on the pathogenesis of portal vein thrombosis.
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Li B, Liu M, Wang Y, Gong S, Yao W, Li W, Gao H, Wei M. Puerarin improves the bone micro-environment to inhibit OVX-induced osteoporosis via modulating SCFAs released by the gut microbiota and repairing intestinal mucosal integrity. Biomed Pharmacother 2020; 132:110923. [PMID: 33125971 DOI: 10.1016/j.biopha.2020.110923] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 01/01/2023] Open
Abstract
SCOPE Half of women over the age of 50 will experience a fracture related osteoporosis in their lifetime. The common treatment is estrogen replacement therapy, which can cause many side effects. Puerarin as a phytoestrogen has been proven to improve postmenopausal osteoporosis. However, the mechanisms of anti-osteoporosis remain unclear due to its low bioavailability. The aim of this study is to investigate whether the anti-osteoporosis effects of puerarin are related to modulations in the gut microbiota and focus on the mechanism of gut / bone axis. METHODS We established ovariectomized (OVX) rats as osteoporosis model. The femur was analyzed by microcomputed tomography (μ-CT) and we measured serum biochemical indices and inflammatory factors. 16S rRNA sequencing was employed to evaluate the gut microbiota composition in the fecal samples. Short-chain fatty acids (SCFAs) was analyzed by GC. The expression of intestinal inflammatory factors and adhesion proteins was confirmed by western blotting and qPCR. RESULTS Puerarin increased the BMD and improved the intestinal mucosal integrity to reduce the systemic inflammation. The disorder of gut microbiota was improved and its metabolites SCFAs were elevated. Metabolic pathways such as amino acid metabolism, LPS biosynthesis and butyrate metabolism were enriched. CONCLUSION Puerarin treatment modulated the gut microbiota disorder to elicit the anti-osteoporosis effects in OVX rats, by improving the bone micro-environment via regulating the SCFAs levels and repairing the intestinal mucosal integrity.
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Affiliation(s)
- Bo Li
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Mingyan Liu
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Yu Wang
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Shiqiang Gong
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Weifan Yao
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Wenshuai Li
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China
| | - Hua Gao
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Division of Pharmacology Laboratory, National Institutes for Food and Drug Control, Beijing, 102629, China.
| | - Minjie Wei
- School of Pharmacy, China Medical University, Shenyang, 110122, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, 110122, China.
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Wu Y, Huang M, Sun H, Zhou X, Zhou R, Gu G, Xia Q. Role of Innate Immunity in Pediatric Post-transplant Idiopathic Liver Fibrosis. Front Immunol 2020; 11:2111. [PMID: 33193293 PMCID: PMC7642407 DOI: 10.3389/fimmu.2020.02111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 08/04/2020] [Indexed: 01/22/2023] Open
Abstract
Pediatric post-transplant idiopathic liver fibrosis is an unexplained graft fibrosis that occurs in symptom-free children without acute rejection and surgical complications. Despite a lack of consensus on the subject, the development of pediatric post-transplant idiopathic liver fibrosis is believed to be the result of multiple potential factors, including ischemia-reperfusion injury, allogeneic acute and chronic rejection, viral hepatitis recurrence, opportunistic infection, and drug-induced liver damage. Among them, there is growing evidence that innate immunity may also have a unique role in this progression. This study reviews the features of pediatric post-transplant idiopathic liver fibrosis and discusses current studies illustrating the potential mechanisms of liver allograft tolerance induced by intrahepatic innate immunity, the role of components including Toll-like receptors (TLRs), interferons (IFN), dendritic cells (DC), natural killer cells (NK cells), NKT cells, neutrophils, and Kupffer cells, as well as their possibly relevant role in the development of pediatric post-transplant idiopathic liver fibrosis.
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Affiliation(s)
- Yue Wu
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mingzhu Huang
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haojie Sun
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiying Zhou
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruoqiao Zhou
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guangxiang Gu
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiang Xia
- Department of Liver Surgery, Renji Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Lactobacillus plantarum NA136 ameliorates nonalcoholic fatty liver disease by modulating gut microbiota, improving intestinal barrier integrity, and attenuating inflammation. Appl Microbiol Biotechnol 2020; 104:5273-5282. [PMID: 32335723 DOI: 10.1007/s00253-020-10633-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 02/07/2023]
Abstract
Gut microbiota dysbiosis, associated with insulin resistance, weak intestinal barrier integrity, and inflammation, may also play a role in the development of dietary-induced nonalcoholic fatty liver disease (NAFLD). This study investigates the effects of dietary Lactobacillus plantarum NA136 administration on gut microbiota composition in an insulin-resistant C57BL/6J mouse NAFLD model. Comparison of mice with and without L. plantarum NA136 treatment revealed that L. plantarum NA136 treatment not only relieved insulin resistance but also significantly increased relative proportions of Desulfovibrio, Alistipes, Prevotella, and Enterorhabdus in gut microbiota of NAFLD mice. Meanwhile, L. plantarum NA136 administration also inhibited pathogenic bacterial growth, while promoting growth of probiotics such as Allobaculum, Lactobacillus, and, most markedly, Bifidobacterium. Moreover, L. plantarum NA136 treatment of NAFLD mice improved intestinal barrier integrity and attenuated high-fat and fructose diet (HFD/F)-induced inflammation. These results implicate gut-liver-axis-dependent microbiota modulation as the underlying mechanism for L. plantarum NA136-induced amelioration of NAFLD.Key points• L. plantarum NA136 corrects gut microbiota disorders caused by a high-fat and fructose diet. • L. plantarum NA136 strengthens the intestinal barrier and reduces inflammation in the liver. • L. plantarum NA136 relieves NAFLD by improving the gut-liver axis.
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Nonalcoholic Fatty Liver Disease Is Associated with Helicobacter pylori Infection in North Urban Chinese: A Retrospective Study. Gastroenterol Res Pract 2020; 2020:9797841. [PMID: 32411211 PMCID: PMC7204187 DOI: 10.1155/2020/9797841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/12/2019] [Indexed: 12/13/2022] Open
Abstract
Background The association between nonalcoholic fatty liver disease (NAFLD) and Helicobacter pylori (H. pylori) is controversial. We conducted a retrospective study to clarify the seroprevalence of H. pylori infection and the relationship between NAFLD and H. pylori infection in north urban Chinese. Methods The retrospective study was performed at Aerospace Center Hospital in Beijing. All subjects in this study were a healthy population who underwent health examinations at the hospital between 2012 and 2015. A logistic regression model was used to calculate the association between NAFLD and H. pylori infection. Age, gender, underlying diseases, and metabolic syndrome (MS) were adjusted. Effects of NAFLD on H. pylori infection in a different age, gender, and number of MS characteristic subgroups were analyzed. Results There were 7803 (43.4%) subjects with H. pylori infection, 3726 (20.7%) with mild NAFLD, 730 (4.1%) with moderate NAFLD, and 369 (2.1%) with severe NAFLD among 17971 subjects. H. pylori infection was related to the seroprevalence of any level of NAFLD, including mild, moderate, and severe NAFLD (OR = 1.607, 95% CI: 1.487-1.736; OR = 1.770, 95% CI: 1.519-2.063; and OR = 2.120, 95% CI: 1.714-2.526, respectively). The results of subgroup analysis showed that the risk of incident NAFLD from H. pylori infection had significant interactions by subjects with or without MS characteristics. Moreover, as the number of MS characteristics in patients with a fatty liver increased, the risk of H. pylori infection also increased. Conclusions NAFLD may be associated with H. pylori infection in a Chinese population. Younger, male NAFLD patients and those meeting more characteristics of MS were more likely to have H. pylori infection.
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Yan T, Yan N, Wang P, Xia Y, Hao H, Wang G, Gonzalez FJ. Herbal drug discovery for the treatment of nonalcoholic fatty liver disease. Acta Pharm Sin B 2020; 10:3-18. [PMID: 31993304 PMCID: PMC6977016 DOI: 10.1016/j.apsb.2019.11.017] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/23/2019] [Accepted: 10/31/2019] [Indexed: 12/11/2022] Open
Abstract
Few medications are available for meeting the increasing disease burden of nonalcoholic fatty liver disease (NAFLD) and its progressive stage, nonalcoholic steatohepatitis (NASH). Traditional herbal medicines (THM) have been used for centuries to treat indigenous people with various symptoms but without clarified modern-defined disease types and mechanisms. In modern times, NAFLD was defined as a common chronic disease leading to more studies to understand NAFLD/NASH pathology and progression. THM have garnered increased attention for providing therapeutic candidates for treating NAFLD. In this review, a new model called “multiple organs-multiple hits” is proposed to explain mechanisms of NASH progression. Against this proposed model, the effects and mechanisms of the frequently-studied THM-yielded single anti-NAFLD drug candidates and multiple herb medicines are reviewed, among which silymarin and berberine are already under U.S. FDA-sanctioned phase 4 clinical studies. Furthermore, experimental designs for anti-NAFLD drug discovery from THM in treating NAFLD are discussed. The opportunities and challenges of reverse pharmacology and reverse pharmacokinetic concepts-guided strategies for THM modernization and its global recognition to treat NAFLD are highlighted. Increasing mechanistic evidence is being generated to support the beneficial role of THM in treating NAFLD and anti-NAFLD drug discovery.
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Affiliation(s)
- Tingting Yan
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Corresponding authors.
| | - Nana Yan
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, China
| | - Ping Wang
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yangliu Xia
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- School of Life Science and Medicine, Dalian University of Technology, Panjin 124221, China
| | - Haiping Hao
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, China
| | - Guangji Wang
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, China
| | - Frank J. Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Corresponding authors.
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Goulet O, Hojsak I, Kolacek S, Pop TL, Cokugras FC, Zuccotti G, Pettoello‐Mantovani M, Fabiano V. Paediatricians play a key role in preventing early harmful events that could permanently influence the development of the gut microbiota in childhood. Acta Paediatr 2019; 108:1942-1954. [PMID: 31197890 PMCID: PMC6852013 DOI: 10.1111/apa.14900] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 05/14/2019] [Accepted: 06/12/2019] [Indexed: 02/05/2023]
Abstract
AIM The development of the gut microbiota occurs primarily during infancy, and growing evidence has emphasised its positive role and implications for human health. The aim of this review was to provide essential knowledge about the gut microbiota and to describe and highlight the importance of the factors that influence the gut microbiota in early life and their potential harmful effects later in life. METHODS The European Paediatric Association, the Union of the National European Paediatric Societies and Associations, convened a panel of independent European experts to summarise the research on microbiota for general paediatricians. They used PubMed and the Cochrane Library to identify studies published in English up to June 2018. RESULTS A number of clinical conditions can disrupt the development of a stable gut microbiota. Changes in the microbiome have been documented in many chronic diseases, mainly immune-mediated gastrointestinal and liver diseases, and distinct patterns have been associated with each specific disease. The gut microbiota can be positively modulated with probiotics, prebiotics, synbiotics, paraprobiotics and postbiotics. CONCLUSION Paediatricians can play a key role in preventing harmful events that could permanently influence the composition and/or function of the gut microbiota. Various treatment strategies can be used.
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Affiliation(s)
- Olivier Goulet
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Intestinal Failure Rehabilitation Centre, National Reference Centre for Rare Digestive Diseases, APHP Necker‐Enfants Malades HospitalParis‐Descartes UniversityParisFrance
| | - Iva Hojsak
- Children’s Hospital ZagrebUniversity of Zagreb School of MedicineZagrebCroatia
- School of MedicineUniversity J.J. StrossmayerOsijekCroatia
| | - Sanja Kolacek
- Children’s Hospital ZagrebUniversity of Zagreb School of MedicineZagrebCroatia
| | - Tudor Lucian Pop
- Second Paediatric ClinicUniversity of Medicine and Pharmacy Iuliu HatieganuCluj‐NapocaRomania
| | - Fugen Cullu Cokugras
- Paediatric Gastroenterology, Hepatology and Nutrition, Cerrahpas_a Medical FacultyIstanbul UniversityIstanbulTurkey
| | - Gianvincenzo Zuccotti
- Pediatric Department, Vittore Buzzi Children’s HospitalUniversità degli Studi di MilanoMilanItaly
| | - Massimo Pettoello‐Mantovani
- Department of Pediatrics, Scientific Institute ‘Casa Sollievo della Sofferenza’University of FoggiaFoggiaItaly
- European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA)BerlinGermany
| | - Valentina Fabiano
- Pediatric Department, Vittore Buzzi Children’s HospitalUniversità degli Studi di MilanoMilanItaly
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An X, Bao Q, Di S, Zhao Y, Zhao S, Zhang H, Lian F, Tong X. The interaction between the gut Microbiota and herbal medicines. Biomed Pharmacother 2019; 118:109252. [DOI: 10.1016/j.biopha.2019.109252] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 12/14/2022] Open
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Li N, Wang B, Wu Y, Luo X, Chen Z, Sang C, Xiong T. Modification effects of SanWei GanJiang Powder on liver and intestinal damage through reversing bile acid homeostasis. Biomed Pharmacother 2019; 116:109044. [DOI: 10.1016/j.biopha.2019.109044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/11/2019] [Accepted: 05/29/2019] [Indexed: 02/08/2023] Open
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Gnocchi D, Custodero C, Sabbà C, Mazzocca A. Circadian rhythms: a possible new player in non-alcoholic fatty liver disease pathophysiology. J Mol Med (Berl) 2019; 97:741-759. [PMID: 30953079 DOI: 10.1007/s00109-019-01780-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/10/2019] [Accepted: 03/13/2019] [Indexed: 12/16/2022]
Abstract
Over the last decades, a better knowledge of the molecular machinery supervising the regulation of circadian clocks has been achieved, and numerous findings have helped in unravelling the outstanding significance of the molecular clock for the proper regulation of our physiologic and metabolic homeostasis. Non-alcoholic fatty liver disease (NAFLD) is currently considered as one of the emerging liver pathologies in the Western countries due to the modification of eating habits and lifestyle. Although NAFLD is considered a pretty benign condition, it can progress towards non-alcoholic steatohepatitis (NASH) and eventually hepatocellular carcinoma (HCC). The pathogenic mechanisms involved in NAFLD development are complex, since this disease is a multifactorial condition. Major metabolic deregulations along with a genetic background are believed to take part in this process. In this light, the aim of this review is to give a comprehensive description of how our circadian machinery is regulated and to describe to what extent our internal clock is involved in the regulation of hormonal and metabolic homeostasis, and by extension in the development and progression of NAFLD/NASH and eventually in the onset of HCC.
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Affiliation(s)
- Davide Gnocchi
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124, Bari, Italy
| | - Carlo Custodero
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124, Bari, Italy
| | - Carlo Sabbà
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124, Bari, Italy
| | - Antonio Mazzocca
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124, Bari, Italy.
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The role of macrophages in nonalcoholic fatty liver disease and nonalcoholic steatohepatitis. Nat Rev Gastroenterol Hepatol 2019; 16:145-159. [PMID: 30482910 DOI: 10.1038/s41575-018-0082-x] [Citation(s) in RCA: 530] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) and its inflammatory and often progressive subtype nonalcoholic steatohepatitis (NASH) are becoming the leading cause of liver-related morbidity and mortality worldwide, and a primary indication for liver transplantation. The pathophysiology of NASH is multifactorial and not yet completely understood; however, innate immunity is a major contributing factor in which liver-resident macrophages (Kupffer cells) and recruited macrophages play a central part in disease progression. In this Review, we assess the evidence for macrophage involvement in the development of steatosis, inflammation and fibrosis in NASH. In this process, not only the polarization of liver macrophages towards a pro-inflammatory phenotype is important, but adipose tissue macrophages, especially in the visceral compartment, also contribute to disease severity and insulin resistance. Macrophage activation is mediated by factors such as endotoxins and translocated bacteria owing to increased intestinal permeability, factors released from damaged or lipoapoptotic hepatocytes, as well as alterations in gut microbiota and defined nutritional components, including certain free fatty acids, cholesterol and their metabolites. Reflecting the important role of macrophages in NASH, we also review studies investigating drugs that target macrophage recruitment to the liver, macrophage polarization and their inflammatory effects as potential treatment options for patients with NASH.
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Wu J, Shao H, Zhang J, Ying Y, Cheng Y, Zhao D, Dou X, Lv H, Li S, Liu F, Ling P. Mussel polysaccharide α-D-glucan (MP-A) protects against non-alcoholic fatty liver disease via maintaining the homeostasis of gut microbiota and regulating related gut-liver axis signaling pathways. Int J Biol Macromol 2019; 130:68-78. [PMID: 30797009 DOI: 10.1016/j.ijbiomac.2019.02.097] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/09/2019] [Accepted: 02/15/2019] [Indexed: 12/14/2022]
Abstract
We isolated and characterized a Mussel polysaccharide, α-D-glucan (MP-A), from Mytilus coruscus earlier. In this work, the pharmacological activity and mechanisms of MP-A as an oral supplement for non-alcoholic fatty liver disease (NAFLD) were explored. High fat diet (HFD) was utilized to induce NAFLD in Sprague Dawley male rats and MP-A (0.6 g/kg) was supplemented for 4 weeks. The results showed that MP-A supplementation reduced blood lipid levels, intrahepatic lipid accumulation and NAFLD activity score in HFD-fed rats. Additionally, the analysis of 16S rDNA sequencing on gut microbiota samples revealed that HFD could induce microbial dysbiosis. However, MP-A supplementation could remodel gut microbiota structure, inhibit LPS-TLR4-NF-κB pathway activation, and restrain subsequent inflammation factors secretion. Furthermore, MP-A regulated the lipid metabolism by promoting the production of short chain fatty acids and suppressing PPAR γ and SREBP-1c expression. Our results support that MP-A can prevent against NAFLD and act as an oral supplementation for hepatoprotection via modulating gut microbiota and related gut-liver axis signaling pathways.
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Affiliation(s)
- Jixu Wu
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Huarong Shao
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China.
| | - Jinhua Zhang
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Yong Ying
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Yanling Cheng
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Dan Zhao
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Xixi Dou
- Shandong Freda Pharmaceutical Group Company, Jinan 250101, China
| | - Huimin Lv
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Shuaiguang Li
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Fei Liu
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China.
| | - Peixue Ling
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China; Shandong Freda Pharmaceutical Group Company, Jinan 250101, China.
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Jiang JW, Chen XH, Ren Z, Zheng SS. Gut microbial dysbiosis associates hepatocellular carcinoma via the gut-liver axis. Hepatobiliary Pancreat Dis Int 2019; 18:19-27. [PMID: 30527903 DOI: 10.1016/j.hbpd.2018.11.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 09/28/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the most common malignancies in the world. Gut microbiota has been demonstrated to play a critical role in liver inflammation, chronic fibrosis, liver cirrhosis, and HCC development through the gut-liver axis. DATA SOURCES Recently there have been several innovative studies investigating gut microbial dysbiosis-mediated enhancement of HCC through the gut-liver axis. Literatures from January 1998 to January 2018 were searched in the PubMed database using the keywords "gut microbiota" and "hepatocellular carcinoma" or "liver cancer", and the results of experimental and clinical studies were analyzed. RESULTS Gut microbial dysbiosis accompanies the progression of alcoholic liver disease, non-alcoholic fatty liver disease and liver cirrhosis, and promotes HCC progression in an experimental mouse model. The immune system and key factors such as Toll-like receptor 4 are involved in the process. There is evidence for gut microbial dysbiosis in hepatitis virus-related HCC patients. CONCLUSIONS Gut microbial dysbiosis is closely associated with hepatic inflammation disease and HCC through the gut-liver axis. With the enhanced understanding of the interactions between gut microbiota and liver through the gut-liver axis, new treatment strategies for HCC are being developed.
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Affiliation(s)
- Jian-Wen Jiang
- Department of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China; Health Management Center, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Xin-Hua Chen
- Department of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China
| | - Zhigang Ren
- Department of Infectious Disease, Precision Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Shu-Sen Zheng
- Department of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China.
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Abbasi Oshaghi E. Role of Toll-like Receptor 4 in the Development of Non-alcoholic Fatty Liver Disease. AVICENNA JOURNAL OF MEDICAL BIOCHEMISTRY 2018. [DOI: 10.15171/ajmb.2018.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Ebrahim Abbasi Oshaghi
- Department of Clinical Biochemistry, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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Meng X, Li S, Li Y, Gan RY, Li HB. Gut Microbiota's Relationship with Liver Disease and Role in Hepatoprotection by Dietary Natural Products and Probiotics. Nutrients 2018; 10:E1457. [PMID: 30297615 PMCID: PMC6213031 DOI: 10.3390/nu10101457] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/17/2018] [Accepted: 09/26/2018] [Indexed: 12/14/2022] Open
Abstract
A variety of dietary natural products have shown hepatoprotective effects. Increasing evidence has also demonstrated that gut microorganisms play an important role in the hepatoprotection contributed by natural products. Gut dysbiosis could increase permeability of the gut barrier, resulting in translocated bacteria and leaked gut-derived products, which can reach the liver through the portal vein and might lead to increased oxidative stress and inflammation, thereby threatening liver health. Targeting gut microbiota modulation represents a promising strategy for hepatoprotection. Many natural products could protect the liver from various injuries or mitigate hepatic disorders by reverting gut dysbiosis, improving intestinal permeability, altering the primary bile acid, and inhibiting hepatic fatty acid accumulation. The mechanisms underlying their beneficial effects also include reducing oxidative stress, suppressing inflammation, attenuating fibrosis, and decreasing apoptosis. This review discusses the hepatoprotective effects of dietary natural products via modulating the gut microbiota, mainly focusing on the mechanisms of action.
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Affiliation(s)
- Xiao Meng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
| | - Sha Li
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong 999077, China.
| | - Ya Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
- South China Sea Bioresource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-sen University, Guangzhou 510006, China.
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Cheng C, Tan J, Qian W, Zhang L, Hou X. Gut inflammation exacerbates hepatic injury in the high-fat diet induced NAFLD mouse: Attention to the gut-vascular barrier dysfunction. Life Sci 2018; 209:157-166. [PMID: 30096384 DOI: 10.1016/j.lfs.2018.08.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 08/06/2018] [Indexed: 02/06/2023]
Abstract
AIMS Gut inflammation has been put forward to be associated with hepatic injury in the clinical practice. The dismantled intestinal barrier was highly concerned, however, largely unknown about the role of gut-vascular barrier (GVB) in this process. This study aimed to investigate if inflamed gut directly contributes to the progression of non-alcoholic steatohepatitis (NASH), especially attention to the GVB dysfunction. MAIN METHODS Male C57bl/6 mice were fed with a high-fat diet (HFD) and 1% DSS for 12 weeks. The colonic inflammatory injury as well as hepatic injury were evaluated. The GVB function was assessed via measuring the permeability to fluorescently-labeled dextran (70 kDa) and the expression of plasmalemma vesicle-associated protein-1 (PV1). Furthermore, the plasma endotoxin level and hepatic TLR4/TLR9 mRNA expression were detected. KEY FINDINGS There were evident colitis in DSS-exposed mice, which trend to be more apparent in HFD ones. The HFD + DSS mice exhibited more serious hepatic steatosis, inflammation and fibrosis than HFD groups. The downregulated tight junction protein in HFD + DSS mice indicated loss of epithelial barrier. The GVB disruption were also confirmed with increased permeability to macromolecules and high expression of endothelial PV1 in HFD + DSS mice. Accordingly, potentially elevated plasma endotoxin levels and markedly increased TLR4/TLR9 mRNA expression were demonstrated in HFD + DSS mice rather than HFD groups. SIGNIFICANCE Gut inflammation exacerbates liver injury and fibrosis in HFD mice, which may contribute to the development of NASH. Beyond the damaged intestinal epithelial barrier, GVB disruption with bacterial translocation into may play a key role in the pathogenesis of NASH.
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Affiliation(s)
- Chunwei Cheng
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jun Tan
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wei Qian
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lei Zhang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Meidan E, Kolesnikov Y, Tirosh O. High Fat Diets Composed of Palm Stearin and Olive Oil Equally Exacerbate Liver Inflammatory Damage and Metabolic Stress in Mice. Mol Nutr Food Res 2018; 62:e1700915. [PMID: 29733507 DOI: 10.1002/mnfr.201700915] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 04/22/2018] [Indexed: 12/15/2022]
Abstract
SCOPE People with fatty liver could be subject to acute infections such as sepsis. The aim of the study is to evaluate the effect of high fat diets (HFD) of olive oil and palm stearin on liver inflammation induced by lipopolysaccharides (LPS). METHODS AND RESULTS C57BL/6J male mice were treated with high fat diets with different sources of oils: palm stearin and olive oil for 8 weeks followed by LPS injection. The proinflammatory effect of olive oil was also studied using gavage treatment and IP injection of LPS. Animals fed with HFDs showed an increase in body weight, elevated blood glucose levels, and fatty liver phenotype. HFDs aggravated the effect of LPS treatment to induce inflammatory response compared to low fat diet (LFD) effect. Following HFD supplementation, LPS induced hyperinsulinemia, more liver damage than in animals that consumed LFD. In addition, both gavage and long-term feeding with high lipids in the presence of LPS resulted in inhibition of gluconeogenic genes expression. CONCLUSION HFDs of both monounsaturated and saturated fat potentiated liver inflammation induced by LPS treatment indicate that the total amount of fat consumed is the main proinflammatory factor rather than the type of fat.
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Affiliation(s)
- Elena Meidan
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Yula Kolesnikov
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Oren Tirosh
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
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Effects of shenling baizhu powder herbal formula on intestinal microbiota in high-fat diet-induced NAFLD rats. Biomed Pharmacother 2018; 102:1025-1036. [PMID: 29710519 DOI: 10.1016/j.biopha.2018.03.158] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/26/2018] [Accepted: 03/26/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Worldwide, non-alcoholic fatty liver disease (NAFLD) is a common chronic liver disease closely associated with obesity, diabetes and other metabolic diseases. Shenling Baizhu powder (SLBZP), a formulation of a variety of natural medicinal plants, has hepatoprotective properties and clinical efficacy in treating non-infectious intestinal disease. SLBZP has improved NAFLD symptoms; however, its mechanism of action is unknown. METHODS We established an NAFLD model in rats given a high-fat diet (HFD), administered different interventions and measured serum biochemical indices and inflammatory factors. Liver tissues were stained with hematoxylin and eosin (HE) and oil red O, and colon tissues were analyzed by immunohistochemistry. The expression profiles of liver TLR4 pathway related protein was confirmed by western blotting. Changes in intestinal microbiota composition were analyzed using a 16S rDNA sequencing technique. RESULTS Of note, SLBZP effectively reduced body weight in HFD-fed rats (p < 0.05). Serum biochemical analysis indicated that SLBZP decreased the serum level of total cholesterol (TC) and improved liver function. Additionally, SLBZP decreased the serum level of endotoxin, tumor necrosis factor α (TNF-α), interleukin-1β (IL-β) (p < 0.05), and decreased the expression of TLR4 pathway related protein. Pathological examination showed that SLBZP alleviates hepatic steatosis and repairs colon mucosa. Microbiome analysis revealed that SLBZP improved the abundance of intestinal microbiota. In taxonomy-based analysis, compared with control rats, SLBZP-treated rats showed obvious changes in intestinal microbiota composition. Moreover, SLBZP increased the relative abundance of short-chain fatty acid (SCFA)-producing bacteria, including Bifidobacterium and Anaerostipes. CONCLUSION Taken together, these results suggest that the effects of SLBZP against NAFLD may be related to the increased abundance of beneficial gut microbiota and decreased levels of LPS in the portal vein.
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Qin Y, Wade PA. Crosstalk between the microbiome and epigenome: messages from bugs. J Biochem 2018; 163:105-112. [PMID: 29161429 PMCID: PMC5892391 DOI: 10.1093/jb/mvx080] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 10/31/2017] [Indexed: 01/07/2023] Open
Abstract
Mammals exist in a complicated symbiotic relationship with their gut microbiome, which is postulated to have broad impacts on host health and disease. As omics-based technologies have matured, the potential mechanisms by which the microbiome affects host physiology are being addressed. The gut microbiome, which provides environmental cues, can modify host cell responses to stimuli through alterations in the host epigenome and, ultimately, gene expression. Increasing evidence highlights microbial generation of bioactive compounds that impact the transcriptional machinery in host cells. Here, we review current understanding of the crosstalk between gut microbiota and the host epigenome, including DNA methylation, histone modification and non-coding RNAs. These studies are providing insights into how the host responds to microbial signalling and are predicted to provide information for the application of precision medicine.
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Affiliation(s)
- Yufeng Qin
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Paul A Wade
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
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Zhang W, Liu Y, Wu M, Zhu X, Wang T, He K, Li P, Wu X. PI3K inhibition protects mice from NAFLD by down-regulating CMKLR1 and NLRP3 in Kupffer cells. J Physiol Biochem 2017; 73:583-594. [DOI: 10.1007/s13105-017-0589-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 08/30/2017] [Indexed: 12/12/2022]
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Long-term challenges and perspectives of pre-adolescent liver disease. Lancet Gastroenterol Hepatol 2017; 2:435-445. [DOI: 10.1016/s2468-1253(16)30160-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/13/2016] [Accepted: 09/22/2016] [Indexed: 12/11/2022]
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The Use of Probiotics in Pediatric Nonalcoholic Fatty Liver Disease: Teachable Moment or Missed Opportunity? J Pediatr Gastroenterol Nutr 2017; 64:336-337. [PMID: 27749611 DOI: 10.1097/mpg.0000000000001431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Tsutsumi T, Okushin K, Enooku K, Fujinaga H, Moriya K, Yotsuyanagi H, Aizaki H, Suzuki T, Matsuura Y, Koike K. Nonstructural 5A Protein of Hepatitis C Virus Interferes with Toll-Like Receptor Signaling and Suppresses the Interferon Response in Mouse Liver. PLoS One 2017; 12:e0170461. [PMID: 28107512 PMCID: PMC5249188 DOI: 10.1371/journal.pone.0170461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 01/05/2017] [Indexed: 02/06/2023] Open
Abstract
The hepatitis C virus nonstructural protein NS5A is involved in resistance to the host immune response, as well as the viral lifecycle such as replication and maturation. Here, we established transgenic mice expressing NS5A protein in the liver and examined innate immune responses against lipopolysaccharide (LPS) in vivo. Intrahepatic gene expression levels of cytokines such as interleukin-6, tumor necrosis factor-α, and interferon-γ were significantly suppressed after LPS injection in the transgenic mouse liver. Induction of the C-C motif chemokine ligand 2, 4, and 5 was also suppressed. Phosphorylation of the signal transducer and activator of transcription 3, which is activated by cytokines, was also reduced, and expression levels of interferon-stimulated genes, 2’-5’ oligoadenylate synthase, interferon-inducible double-stranded RNA-activated protein kinase, and myxovirus resistance 1 were similarly suppressed. Since LPS binds to toll-like receptor 4 and stimulates the downstream pathway leading to induction of these genes, we examined the extracellular signal-regulated kinase and IκB-α. The phosphorylation levels of these molecules were reduced in transgenic mouse liver, indicating that the pathway upstream of the molecules was disrupted by NS5A. Further analyses revealed that the interaction between interleukin-1 receptor-associated kinase-1 and tumor necrosis factor receptor associated factor-6 was dispersed in transgenic mice, suggesting that NS5A may interfere with this interaction via myeloid differentiation primary response gene 88, which was shown to interact with NS5A. Since the gut microbiota, a source of LPS, is known to be associated with pathological conditions in liver diseases, our results suggest the involvement of NS5A in the pathogenesis of HCV infected-liver via the suppression of innate immunity.
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Affiliation(s)
- Takeya Tsutsumi
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- * E-mail:
| | - Kazuya Okushin
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kenichiro Enooku
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hidetaka Fujinaga
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kyoji Moriya
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Yotsuyanagi
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hideki Aizaki
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuro Suzuki
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshiharu Matsuura
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Kazuhiko Koike
- Department of Internal Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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The Role of Tissue Macrophage-Mediated Inflammation on NAFLD Pathogenesis and Its Clinical Implications. Mediators Inflamm 2017; 2017:8162421. [PMID: 28115795 PMCID: PMC5237469 DOI: 10.1155/2017/8162421] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/22/2016] [Accepted: 12/04/2016] [Indexed: 02/06/2023] Open
Abstract
The obese phenotype is characterized by a state of chronic low-grade systemic inflammation that contributes to the development of comorbidities, including nonalcoholic fatty liver disease (NAFLD). In fact, NAFLD is often associated with adipocyte enlargement and consequent macrophage recruitment and inflammation. Macrophage polarization is often associated with the proinflammatory state in adipose tissue. In particular, an increase of M1 macrophages number or of M1/M2 ratio triggers the production and secretion of various proinflammatory signals (i.e., adipocytokines). Next, these inflammatory factors may reach the liver leading to local M1/M2 macrophage polarization and consequent onset of the histological damage characteristic of NAFLD. Thus, the role of macrophage polarization and inflammatory signals appears to be central for pathogenesis and progression of NAFLD, even if the heterogeneity of macrophages and molecular mechanisms that govern their phenotype switch remain incompletely understood. In this review, we discuss the role of adipose and liver tissue macrophage-mediated inflammation in experimental and human NAFLD. This focus is relevant because it may help researchers that approach clinical and experimental studies on this disease advancing the knowledge of mechanisms that could be targeted in order to revert NAFLD-related fibrosis.
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Mosca A, Della Corte C, Sartorelli MR, Ferretti F, Nicita F, Vania A, Nobili V. Beverage consumption and paediatric NAFLD. Eat Weight Disord 2016; 21:581-588. [PMID: 27565159 DOI: 10.1007/s40519-016-0315-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 08/11/2016] [Indexed: 12/22/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in children and adolescents, due to the increased worldwide incidence of obesity among children. It is now clear enough that of diet high in carbohydrates and simple sugars are associated with hepatic steatosis and non-alcoholic steatohepatitis (NASH). Several studies have shown that an increased consumption of simple sugars is also positively associated with overweight and obesity, and related co-morbidities, such as type 2 diabetes, metabolic syndrome and NAFLD. It is difficult to define the role of the various components of soft drinks and energy drinks in the pathogenesis of NAFLD and its progression in NASH, but the major role is played by high calorie and high sugar consumption, mainly fructose. In addition, other components of these beverages (e.g. xanthine) seem to have an important role in the pathogenesis of metabolic disorders, crucial pathways involved in NAFLD/NASH. The drastic reduction in the consumption of energy drinks and soft drinks is an appropriate intervention for the prevention of obesity and NAFLD in young people.
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Affiliation(s)
- Antonella Mosca
- Department of Paediatrics and Paediatric Neuropsychiatry, Centre of Paediatric Dietetics and Nutrition, Sapienza University, Rome, Italy.
| | - Claudia Della Corte
- Hepato-Metabolic Disease Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Francesca Ferretti
- Hepato-Metabolic Disease Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Francesco Nicita
- Child Neurology Unit, Department of Paediatrics and Paediatric Neuropsychiatry, Sapienza University, Rome, Italy
| | - Andrea Vania
- Department of Paediatrics and Paediatric Neuropsychiatry, Centre of Paediatric Dietetics and Nutrition, Sapienza University, Rome, Italy
| | - Valerio Nobili
- Hepato-Metabolic Disease Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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Bhat M, Arendt BM, Bhat V, Renner EL, Humar A, Allard JP. Implication of the intestinal microbiome in complications of cirrhosis. World J Hepatol 2016; 8:1128-1136. [PMID: 27721918 PMCID: PMC5037326 DOI: 10.4254/wjh.v8.i27.1128] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/06/2016] [Accepted: 08/01/2016] [Indexed: 02/06/2023] Open
Abstract
The intestinal microbiome (IM) is altered in patients with cirrhosis, and emerging literature suggests that this impacts on the development of complications. The PubMed database was searched from January 2000 to May 2015 for studies and review articles on the composition, pathophysiologic effects and therapeutic modulation of the IM in cirrhosis. The following combination of relevant text words and MeSH terms were used, namely intestinal microbiome, microbiota, or dysbiosis, and cirrhosis, encephalopathy, spontaneous bacterial peritonitis, hepatorenal syndrome, variceal bleeding, hepatopulmonary syndrome, portopulmonary hypertension and hepatocellular carcinoma. The search results were evaluated for pertinence to the subject of IM and cirrhosis, as well as for quality of study design. The IM in cirrhosis is characterized by a decreased proportion of Bacteroides and Lactobacilli, and an increased proportion of Enterobacteriaceae compared to healthy controls. Except for alcoholic cirrhosis, the composition of the IM in cirrhosis is not affected by the etiology of the liver disease. The percentage of Enterobacteriaceae increases with worsening liver disease severity and decompensation and is associated with bacteremia, spontaneous bacterial peritonitis and hepatic encephalopathy. Lactulose, rifaximin and Lactobacillus-containing probiotics have been shown to partially reverse the cirrhosis associated enteric dysbiosis, in conjunction with improvement in encephalopathy. The IM is altered in cirrhosis, and this may contribute to the development of complications associated with end-stage liver disease. Therapies such as lactulose, rifaximin and probiotics may, at least partially, reverse the cirrhosis-associated changes in the IM. This, in turn, may prevent or alleviate the severity of complications.
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Zhang ZL, Duan ZJ. Gut-liver axis: An important target for prevention and treatment of liver diseases. Shijie Huaren Xiaohua Zazhi 2016; 24:3454-3460. [DOI: 10.11569/wcjd.v24.i23.3454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The human intestine harbors a complex and diverse community of microbes that promote metabolism and digestion in their symbiotic relationship with the host. Liver diseases have long been associated with qualitative (dysbiotic) and quantitative (overgrowth) changes in the intestinal microbiota. Extrinsic factors, such as diet and alcohol, contribute to intestinal microbiota dysbiosis. Dysbiosis results in intestinal inflammation, intestinal barrier breakdown, and translocation of microbial products in animal models, further aggravating hepatic injury and inflammation. Microbial metabolites produced in a dysbiotic intestinal environment and host factors are equally important in the pathogenesis of liver diseases. In the current review, we discuss the progress in understanding the role of gut-liver axis dysfunction in the progression of non-alcoholic fatty liver disease, alcoholic liver disease and cirrhosis, and the potential application value of the restoration of intestinal homeostasis in the prevention and treatment of liver diseases.
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Qu BG. Inflammatory and immune changes and treatment in patients with fatty liver disease. Shijie Huaren Xiaohua Zazhi 2016; 24:2931-2942. [DOI: 10.11569/wcjd.v24.i19.2931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Fatty liver disease (FLD) is a common chronic inflammatory and immune disease. Current research suggests that it is associated with a variety of clinical metabolic diseases, however, its etiology is very complex, and its exact mechanism is not fully clear. Enormous studies have found that inflammation and immunity play roles in the pathogenesis of FLD, via mechanisms involving inflammatory mediators or inflammatory factors, neutrophil infiltration, inflammasomes, peroxisome proliferator-activated receptors (PPARs), gut microbes-related inflammation, immune cells, Toll-like receptors (TLRs) and its downstream signal transduction pathways, gut microbe-related immune response, immunocytes, oxidative stress, other new markers of immune response and so on. In order to provide a reliable basis for accurate diagnosis and treatment of FLD, studies on the prevention, early diagnosis and prospective intervention of FLD should be strengthened. In addition, according to different pathogenesis, corresponding measures should be taken to reduce the risk of FLD and its related diseases.
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Cortez-Pinto H, Borralho P, Machado J, Lopes MT, Gato IV, Santos AM, Guerreiro AS. Microbiota Modulation With Synbiotic Decreases Liver Fibrosis in a High Fat Choline Deficient Diet Mice Model of Non-Alcoholic Steatohepatitis (NASH). GE-PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2016; 23:132-141. [PMID: 28868449 PMCID: PMC5580012 DOI: 10.1016/j.jpge.2016.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 01/18/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Gut microbiota may play a role in non-alcoholic steatohepatitis (NASH). Previous studies showed that prebiotics and probiotics might halt the progression of steatohepatitis. AIM To clarify the potential effect of Synbiotic 2000®Forte (Synb) in preventing or ameliorating diet induced steatohepatitis, particularly in fibrosis progression and how this intervention correlates with gut microbiota composition and endotoxinemia. METHODS Twenty-seven C57BL/6 mice were divided into three groups: chow diet (CD, n = 7); high-fat choline deficient diet (HFCD, n = 10) and HFCD diet supplemented with Synbiotic 2000®Forte (four probiotic strains and four prebiotics mixture) (HFCD + Synb, n = 10). At 6 and 18 weeks, blood samples (lipopolysaccharides assay - LPS), cecal feaces (gut microbiota) and liver tissue (histology) were collected for analysis. RESULTS Both HCFD diet mice developed steatohepatitis with ballooning at 6 and 18 weeks, opposite to CD. Comparison of histological scores in HFCD and HFCD + Synb, at 6 and 18 weeks showed no significant difference regarding steatosis, inflammation, or ballooning. Evaluating fibrosis with Sirius Red, and degree of smooth-muscle cell activation, HFCD mice had significantly more fibrosis; addition of Synb significantly reduced fibrosis at 6 weeks and 18 weeks. Serum endotoxin levels were similarly increased in HFCD and HFCD + Synb at week 6; however at week 18 HFCD + Synb had significantly lower endotoxin levels than HFCD. Gut microbiota of HFCD vs CD, showed no significant differences regarding the phyla Firmicutes and Bacteroidetes, either at 6 or 18 weeks; Proteobacteria increased at 6 week (3.3) and 18 week (7.5), while the addition of Synb resulted in a decrease at week 18 (-3.90). Fusobacteria markedly increase at week 18 (10.0), but less so with the addition of Synb (5.2). CONCLUSION Synbiotic 2000®Forte is able to modulate the mouse gut microbiota reducing the degree of fibrosis while simultaneously decreasing endotoxemia.
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Affiliation(s)
- Helena Cortez-Pinto
- Gastroenterology and Hepatology Department, Centro Hospitalar Lisboa Norte, Lisbon, Portugal.,Nutrition Laboratory, Faculdade de Medicina de Lisboa, Lisbon, Portugal
| | - Paula Borralho
- Pathology Institut, Faculdade de Medicina de Lisboa, Lisbon, Portugal
| | - Jorge Machado
- Infectious Diseases Department, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal
| | - Maria T Lopes
- CEDOC - Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas de Lisboa, Lisbon, Portugal
| | - Inês V Gato
- Infectious Diseases Department, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal
| | - António M Santos
- CEDOC - Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas de Lisboa, Lisbon, Portugal
| | - António S Guerreiro
- CEDOC - Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas de Lisboa, Lisbon, Portugal
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Nseir W, Artul S, Nasrallah N, Mahamid M. The association between primary bacteremia of presumed gastrointestinal origin and nonalcoholic fatty liver disease. Dig Liver Dis 2016; 48:343-4. [PMID: 26534773 DOI: 10.1016/j.dld.2015.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/01/2015] [Indexed: 12/11/2022]
Affiliation(s)
- William Nseir
- Division of Internal Medicine, EMMS, The Nazareth Hospital, Nazareth, Israel; Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel.
| | - Suheil Artul
- Division of Internal Medicine, EMMS, The Nazareth Hospital, Nazareth, Israel; Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
| | - Najib Nasrallah
- Division of Internal Medicine, EMMS, The Nazareth Hospital, Nazareth, Israel
| | - Mahmud Mahamid
- Division of Internal Medicine, EMMS, The Nazareth Hospital, Nazareth, Israel; Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
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Miele L, Gasbarrini G, Giorgio V, Gasbarrini A, Grieco A. Nonalcoholic fatty liver disease as trigger of cardiovascular and metabolic complication in metabolic syndrome. Intern Emerg Med 2016; 11:3-10. [PMID: 26602387 DOI: 10.1007/s11739-015-1346-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 10/22/2015] [Indexed: 02/08/2023]
Affiliation(s)
- Luca Miele
- Internal Medicine, Gastroenterology and Liver Unit, Fondazione Policlinico Gemelli, Catholic University of Sacred Heart, Largo Gemelli 8, 00168, Rome, Italy.
| | - Giovanni Gasbarrini
- Internal Medicine, Gastroenterology and Liver Unit, Fondazione Policlinico Gemelli, Catholic University of Sacred Heart, Largo Gemelli 8, 00168, Rome, Italy
| | - Valentina Giorgio
- Pediatric Department, Fondazione Policlinico Gemelli University Hospital, Catholic University of Sacred Heart, Rome, Italy
| | - Antonio Gasbarrini
- Internal Medicine, Gastroenterology and Liver Unit, Fondazione Policlinico Gemelli, Catholic University of Sacred Heart, Largo Gemelli 8, 00168, Rome, Italy
| | - Antonio Grieco
- Internal Medicine, Gastroenterology and Liver Unit, Fondazione Policlinico Gemelli, Catholic University of Sacred Heart, Largo Gemelli 8, 00168, Rome, Italy
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Guo H, Diao N, Yuan R, Chen K, Geng S, Li M, Li L. Subclinical-Dose Endotoxin Sustains Low-Grade Inflammation and Exacerbates Steatohepatitis in High-Fat Diet-Fed Mice. THE JOURNAL OF IMMUNOLOGY 2016; 196:2300-2308. [PMID: 26810228 DOI: 10.4049/jimmunol.1500130] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 12/26/2015] [Indexed: 12/13/2022]
Abstract
Subclinical circulating bacterial endotoxin LPS has been implicated as an important cofactor in the development and progression of nonalcoholic steatohepatitis, but the underlying mechanisms remain unclear. In this study, we demonstrated that 4-wk injection with superlow-dose LPS significantly promoted neutrophil infiltration and accelerated nonalcoholic steatohepatitis progression, including exacerbated macrovesicular steatosis, inflammation, and hepatocyte ballooning in high-fat diet-fed apolipoprotein E knockout mice. This effect could sustain for a month after stoppage of LPS injection. LPS also significantly increased numbers of apoptotic nuclei in hepatocytes and expressions of proapoptotic regulators. Moreover, LPS sustained the low-grade activation of p38 MAPK and inhibited the expression of the upstream MAPK phosphatase 7. By applying selective inhibitors, we demonstrated that the activation of p38 MAPKs is required for neutrophil migration induced by superlow-dose LPS in vitro. Together, these data suggest that superlow-dose LPS may sustain the low-grade activation of p38 MAPKs and neutrophil infiltration, leading to the exacerbation of steatohepatitis.
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Affiliation(s)
- Honghui Guo
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA.,Department of Nutrition, Henry Fok School of Food Science and Engineering, Shaoguan University, Shaoguan 512005, China
| | - Na Diao
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA.,Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ruoxi Yuan
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA
| | - Keqiang Chen
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA
| | - Shuo Geng
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA
| | - Mingsong Li
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Liwu Li
- Laboratory of Inflammation Biology, Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061-0910, USA
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Boye A, Zou YH, Yang Y. Metabolic derivatives of alcohol and the molecular culprits of fibro-hepatocarcinogenesis: Allies or enemies? World J Gastroenterol 2016; 22:50-71. [PMID: 26755860 PMCID: PMC4698508 DOI: 10.3748/wjg.v22.i1.50] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/12/2015] [Accepted: 11/19/2015] [Indexed: 02/06/2023] Open
Abstract
Chronic intake of alcohol undoubtedly overwhelms the structural and functional capacity of the liver by initiating complex pathological events characterized by steatosis, steatohepatitis, hepatic fibrosis and cirrhosis. Subsequently, these initial pathological events are sustained and ushered into a more complex and progressive liver disease, increasing the risk of fibro-hepatocarcinogenesis. These coordinated pathological events mainly result from buildup of toxic metabolic derivatives of alcohol including but not limited to acetaldehyde (AA), malondialdehyde (MDA), CYP2E1-generated reactive oxygen species, alcohol-induced gut-derived lipopolysaccharide, AA/MDA protein and DNA adducts. The metabolic derivatives of alcohol together with other comorbidity factors, including hepatitis B and C viral infections, dysregulated iron metabolism, abuse of antibiotics, schistosomiasis, toxic drug metabolites, autoimmune disease and other non-specific factors, have been shown to underlie liver diseases. In view of the multiple etiology of liver diseases, attempts to delineate the mechanism by which each etiological factor causes liver disease has always proved cumbersome if not impossible. In the case of alcoholic liver disease (ALD), it is even more cumbersome and complicated as a result of the many toxic metabolic derivatives of alcohol with their varying liver-specific toxicities. In spite of all these hurdles, researchers and experts in hepatology have strived to expand knowledge and scientific discourse, particularly on ALD and its associated complications through the medium of scientific research, reviews and commentaries. Nonetheless, the molecular mechanisms underpinning ALD, particularly those underlying toxic effects of metabolic derivatives of alcohol on parenchymal and non-parenchymal hepatic cells leading to increased risk of alcohol-induced fibro-hepatocarcinogenesis, are still incompletely elucidated. In this review, we examined published scientific findings on how alcohol and its metabolic derivatives mount cellular attack on each hepatic cell and the underlying molecular mechanisms leading to disruption of core hepatic homeostatic functions which probably set the stage for the initiation and progression of ALD to fibro-hepatocarcinogenesis. We also brought to sharp focus, the complex and integrative role of transforming growth factor beta/small mothers against decapentaplegic/plasminogen activator inhibitor-1 and the mitogen activated protein kinase signaling nexus as well as their cross-signaling with toll-like receptor-mediated gut-dependent signaling pathways implicated in ALD and fibro-hepatocarcinogenesis. Looking into the future, it is hoped that these deliberations may stimulate new research directions on this topic and shape not only therapeutic approaches but also models for studying ALD and fibro-hepatocarcinogenesis.
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Ionică FE, Negreș S, Bejenaru L, Bejenaru C, Chiriță C. Pharmacological Approaches for Nonalcoholic Fatty Liver Disease. ROMANIAN JOURNAL OF DIABETES NUTRITION AND METABOLIC DISEASES 2016. [DOI: 10.1515/rjdnmd-2016-0037] [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] Open
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Bhatt BD, Lukose T, Siegel AB, Brown RS, Verna EC. Increased risk of colorectal polyps in patients with non-alcoholic fatty liver disease undergoing liver transplant evaluation. J Gastrointest Oncol 2015; 6:459-68. [PMID: 26487938 DOI: 10.3978/j.issn.2078-6891.2015.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Screening colonoscopy is a standard part of the liver transplant (LT) evaluation process. We aimed to evaluate the yield of screening colonoscopy and determine whether non-alcoholic fatty liver disease (NAFLD) was associated with an increased risk of colorectal neoplasia. METHODS We retrospectively assessed all patients who completed LT evaluation at our center between 1/2008-12/2012. Patients <50 years old and those without records of screening colonoscopy, or with greater than average colon cancer risk were excluded. RESULTS A total of 1,102 patients were evaluated, 591 met inclusion criteria and were analyzed. The mean age was 60 years, 67% were male, 12% had NAFLD and 88% had other forms of chronic liver disease. Overall, 42% of patients had a polyp found on colonoscopy: 23% with adenomas, 14% with hyperplastic polyps and with 1% inflammatory polyps. In the final multivariable model controlling for age, NAFLD [odds ratio (OR) 2.41, P=0.001] and a history of significant alcohol use (OR 1.69, P=0.004) were predictive of finding a polyp on colonoscopy. In addition, NAFLD (OR 1.95, P=0.02), significant alcohol use (OR 1.70, P=0.01) and CTP class C (OR 0.57, P=0.02) were associated with adenoma, controlling for age. CONCLUSIONS Screening colonoscopy in patients awaiting LT yields a high rate of polyp (43%) and adenoma (22%) detection, perhaps preventing the accelerated progression to carcinoma that can occur in immunosuppressed post-LT patients. Patients with NAFLD may be at a ~2 fold higher risk of adenomas and should be carefully evaluated prior to LT.
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Affiliation(s)
- Birju D Bhatt
- Center for Liver Disease and Transplantation, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Thresiamma Lukose
- Center for Liver Disease and Transplantation, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Abby B Siegel
- Center for Liver Disease and Transplantation, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Robert S Brown
- Center for Liver Disease and Transplantation, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Elizabeth C Verna
- Center for Liver Disease and Transplantation, Columbia University College of Physicians and Surgeons, New York, NY, USA
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The Crosstalk between Hypoxia and Innate Immunity in the Development of Obesity-Related Nonalcoholic Fatty Liver Disease. BIOMED RESEARCH INTERNATIONAL 2015; 2015:319745. [PMID: 26491664 PMCID: PMC4600870 DOI: 10.1155/2015/319745] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/26/2015] [Accepted: 08/30/2015] [Indexed: 02/07/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) has become a major health issue in western countries in parallel with the dramatic increase in the prevalence of obesity and all obesity related conditions, including respiratory diseases as obstructive sleep apnea-hypopnea syndrome (OSAHS). Interestingly, the severity of the liver damage in obesity-related NAFLD has been associated with the concomitant presence of OSAHS. In the presence of obesity, the proinflammatory state in these patients together with intermittent episodes of hypoxia, characteristic of OSAHS pathogenesis, may lead to an enhanced inflammatory response mediated by a positive feedback loop mechanism that implicates HIF-1 and NFκB. Thus, the severity of liver involvement in obese NAFLD patients with a concomitant diagnosis of OSAHS could be explained. In this review, we focus on the molecular mechanisms underlying the hepatic response to chronic intermittent hypoxia and its interaction with innate immunity in obesity-related NAFLD.
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Portela-Cidade JP, Borges-Canha M, Leite-Moreira AF, Pimentel-Nunes P. Systematic Review of the Relation Between Intestinal Microbiota and Toll-Like Receptors in the Metabolic Syndrome: What Do We Know So Far? GE-PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2015; 22:240-258. [PMID: 28868416 PMCID: PMC5580162 DOI: 10.1016/j.jpge.2015.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 06/17/2015] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Metabolic syndrome is an emerging problem in developed countries and presents itself as a potential threat worldwide. The role of diabetes, dyslipidaemia and hepatic steatosis as pivotal components of the metabolic syndrome is well known. However, their common persistent chronic inflammation and its potential cause still elude. This systematic review aims to present evidence of the mechanisms that link the intestinal microbioma, innate immunity and metabolic syndrome. METHODS A comprehensive research was made using PubMed database and 35 articles were selected. RESULTS We found that metabolic syndrome is associated to increased levels of innate immunity receptors, namely, Toll-like receptors, both in intestine and systemically and its polymorphisms may change the risk of metabolic syndrome development. Microbioma dysbiosis is also present in metabolic syndrome, with lower prevalence of Bacteroidetes and increased prevalence of Firmicutes populations. The data suggest that the link between intestinal microbiota and Toll-like receptors can negatively endanger the metabolic homeostasis. CONCLUSION Current evidence suggests that innate immunity and intestinal microbiota may be the hidden link in the metabolic syndrome development mechanisms. In the near future, this can be the key in the development of new prophylactic and therapeutic strategies to treat metabolic syndrome patients.
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Affiliation(s)
- José Pedro Portela-Cidade
- Physiology and Cardiothoracic Surgery Department, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Marta Borges-Canha
- Physiology and Cardiothoracic Surgery Department, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Adelino Ferreira Leite-Moreira
- Physiology and Cardiothoracic Surgery Department, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Pedro Pimentel-Nunes
- Physiology and Cardiothoracic Surgery Department, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal.,Gastroenterology Department, Instituto Português de Oncologia do Porto Francisco Gentil, Porto, Portugal.,CINTESIS/Biostatistics and Medical Informatics Department, Porto Faculty of Medicine, Porto, Portugal
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