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Dai M, Qian K, Ye Q, Yang J, Gan L, Jia Z, Pan Z, Cai Q, Jiang T, Ma C, Lin X. Specific Mode Electroacupuncture Stimulation Mediates the Delivery of NGF Across the Hippocampus Blood-Brain Barrier Through p65-VEGFA-TJs to Improve the Cognitive Function of MCAO/R Convalescent Rats. Mol Neurobiol 2025; 62:1451-1466. [PMID: 38995444 PMCID: PMC11772513 DOI: 10.1007/s12035-024-04337-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 06/27/2024] [Indexed: 07/13/2024]
Abstract
Cognitive impairment frequently presents as a prevalent consequence following stroke, imposing significant burdens on patients, families, and society. The objective of this study was to assess the effectiveness and underlying mechanism of nerve growth factor (NGF) in treating post-stroke cognitive dysfunction in rats with cerebral ischemia-reperfusion injury (MCAO/R) through delivery into the brain using specific mode electroacupuncture stimulation (SMES). From the 28th day after modeling, the rats were treated with NGF mediated by SMES, and the cognitive function of the rats was observed after treatment. Learning and memory ability were evaluated using behavioral tests. The impact of SMES on blood-brain barrier (BBB) permeability, the underlying mechanism of cognitive enhancement in rats with MCAO/R, including transmission electron microscopy, enzyme-linked immunosorbent assay, immunohistochemistry, immunofluorescence, and TUNEL staining. We reported that SMES demonstrates a safe and efficient ability to open the BBB during the cerebral ischemia repair phase, facilitating the delivery of NGF to the brain by the p65-VEGFA-TJs pathway.
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Affiliation(s)
- Mengyuan Dai
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
- Department of Rehabilitation, Lishui Central Hospital, Lishui, 323000, Zhejiang Province, China
| | - Kecheng Qian
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Qinyu Ye
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Jinding Yang
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Lin Gan
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Zhaoxing Jia
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Zixing Pan
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Qian Cai
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Tianxiang Jiang
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Congcong Ma
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China.
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China.
- The Third Affiliated Hospital of Zhejiang, Chinese Medical University, Xihu District, Moganshan Road No. 219, Hangzhou, 310000, Zhejiang Province, China.
| | - Xianming Lin
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China.
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China.
- The Third Affiliated Hospital of Zhejiang, Chinese Medical University, Xihu District, Moganshan Road No. 219, Hangzhou, 310000, Zhejiang Province, China.
- Department of Rehabilitation, Zhejiang Rehabilitation Medical Center, No. 2828, Binsheng Road, Hangzhou, 310051, Zhejiang Province, China.
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Sousa JA, Callejas BE, Wang A, Higgins E, Herik A, Andonian N, Yousuf M, Colarusso P, Raman M, McKay DM. GPx1 deficiency confers increased susceptibility to ferroptosis in macrophages from individuals with active Crohn's disease. Cell Death Dis 2024; 15:903. [PMID: 39695083 DOI: 10.1038/s41419-024-07289-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2024] [Revised: 11/28/2024] [Accepted: 12/04/2024] [Indexed: 12/20/2024]
Abstract
Intestinal cell death is a defining feature of Crohn's disease (CD), a major form of inflammatory bowel disease. The focus on this aspect of enteric inflammation has mainly been on epithelial cells, while other cell types such as stromal and myeloid cells have received less attention. Hypothesising that decreased macrophage viability in an oxidative environment could be a contributing factor to the pathophysiology of CD, we found that monocyte-derived macrophages from individuals with active CD (but not those in clinical disease remission) have increased sensitivity to cell death induced by H2O2. Molecular biology and pharmacological studies ruled out apoptosis and necroptosis, while increased lipid peroxidation and surface expression of the transferrin receptor implicated ferroptosis as the mechanism of the H2O2-induced cell death: this was supported by suppression of H2O2-cytotoxicity by liproxstatin-1, a pharmacological inhibitor of ferroptosis. Selenoproteins are important antioxidants, and selenium deficiency can be a feature of CD. Despite normal dietary intake of selenium, monocyte-derived macrophages and intestinal macrophages in individuals with CD had decreased protein and/or mRNA expression of the selenoprotein, glutathione peroxidase (GPx)-1. Knockdown of GPx1 in macrophages from healthy volunteers resulted in increased H2O2-induced cell death reminiscent of that observed with macrophages from CD. In summary, monocyte-derived macrophages from individuals with CD have increased susceptibility to H2O2-induced ferroptosis cell death, that may be facilitated, at least in part, by reduced expression of the antioxidant GPx1. We suggest that reduced GPx1 in monocytes recruited to the gut and intestinal macrophages renders these cells vulnerable to reactive oxygen species-evoked ferroptosis cell death and that unraveling the participation of this pathway in Crohn's disease may reveal novel therapeutic approaches to this chronic condition.
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Affiliation(s)
- James A Sousa
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Live Cell Imaging Laboratory, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Blanca E Callejas
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Arthur Wang
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Eve Higgins
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Aydin Herik
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Natalie Andonian
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Munazza Yousuf
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Pina Colarusso
- Live Cell Imaging Laboratory, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Maitreyi Raman
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada
- Department of Community Health Science, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Derek M McKay
- Gastrointestinal Research Group, Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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3
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Guo YE, Lv J, Shu P, Li X, Li Y, Guo J, Chen G, Li Y, Lu B, Zhang W, Liu Y. Drug screening identifies pyrrolidinedithiocarbamate ammonium ameliorating DSS-induced mouse ulcerative colitis via suppressing Th17 differentiation. Cell Immunol 2024; 405-406:104887. [PMID: 39503083 DOI: 10.1016/j.cellimm.2024.104887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 10/09/2024] [Accepted: 10/20/2024] [Indexed: 12/02/2024]
Abstract
T helper 17 (Th17) cells play crucial roles in various autoimmune diseases, including ulcerative colitis (UC), which is characterized by widespread inflammation in the mucosa of the colon and rectum. To identify small-molecule compounds capable of inhibiting CD4+ T cell differentiation into Th17 cells, we established a screening system. Through drug screening, we found that pyrrolidinedithiocarbamate ammonium (PDTC) effectively inhibits Th17 differentiation. In a dextran sulfate sodium (DSS)-induced UC mouse model, administration of PDTC significantly ameliorated colitis. PDTC treatment decreased the production of proinflammatory mediators and inhibited the proportion of Th17 cells in colitis-afflicted mice by suppressing NF-κB activation. These findings showed that PDTC can alleviate colitis by inhibiting NF-κB activation. The therapeutic effects of PDTC observed in a mouse model of UC provided a rationale for its application in clinical settings.
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Affiliation(s)
- Yu-E Guo
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jie Lv
- Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Ping Shu
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xi Li
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ying Li
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Junhong Guo
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guofang Chen
- Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuping Li
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bo Lu
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Wei Zhang
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Yin Liu
- Department of Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
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4
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Şen A, Ertaş B, Çevik Ö, Yıldırım A, Kayalı DG, Akakın D, Bitiş L, Şener G. Cotinus coggygria Scop. Attenuates Acetic Acid-Induced Colitis in Rats by Regulation of Inflammatory Mediators. Appl Biochem Biotechnol 2023; 195:7021-7036. [PMID: 36976506 DOI: 10.1007/s12010-023-04474-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2023] [Indexed: 03/29/2023]
Abstract
In traditional medicine, many medicinal plants are used in the treatment of various diseases caused by inflammation. The objective of the present study is to elucidate for the first time the effects of Cotinus coggygria (CC) ethanol extract (CCE) on colonic structure and inflammation of acetic acid-induced ulcerative colitis in rats. Colonic damage was assessed using disease activity index score, enzyme-linked immunosorbent assay, and hematoxylin-eosin staining. Also, in vitro antioxidant activity of CCE was investigated by ABTS methods. Total phytochemical content of CCE was measured spectroscopically. Acetic acid caused colonic damage according to disease activity index and macroscopic scoring. CCE significantly reversed these damages. While the levels of proinflammatory cytokines TNF-alpha, IL-1beta, IL-6, and TGF-1beta increased in tissue with UC, IL-10 level decreased. CCE increased inflammatory cytokine levels to values close to the sham group. At the same time, while markers indicating disease severity such as VEGF, COX-2, PGE2, and 8-OHdG indicated the disease in the colitis group, these values returned to normal with CCE. Histological research results support biochemical analysis. CCE exhibited significant antioxidant against ABTS radical. Also, CCE was found to have a high content of total polyphenolic compounds. These findings provide evidence that CCE might be benefit as a promising novel therapy in the treatment of UC in humans due to high polyphenol content and justify the use of CC in folkloric medicine for treatment of inflamed diseases.
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Affiliation(s)
- Ali Şen
- Department of Pharmacognosy, Faculty of Pharmacy, Marmara University, 34854, Maltepe, Istanbul, Turkey.
| | - Büşra Ertaş
- Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Özge Çevik
- Department of Biochemistry, Faculty of Medicine, Aydın Adnan Menderes University, Aydın, Turkey
| | - Aybeniz Yıldırım
- Department of Pharmacognosy, Faculty of Pharmacy, Marmara University, 34854, Maltepe, Istanbul, Turkey
| | - Damla Gökçeoğlu Kayalı
- Department of Histology and Embryology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Dilek Akakın
- Department of Histology and Embryology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Leyla Bitiş
- Department of Pharmacognosy, Faculty of Pharmacy, Marmara University, 34854, Maltepe, Istanbul, Turkey
| | - Göksel Şener
- Department of Pharmacology, Faculty of Pharmacy, Fenerbahce University, Istanbul, Turkey
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5
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Zou M, Liang Q, Zhang W, Zhu Y, Xu Y. Endoplasmic reticulum stress related genome-wide Mendelian randomization identifies therapeutic genes for ulcerative colitis and Crohn's disease. Front Genet 2023; 14:1270085. [PMID: 37860672 PMCID: PMC10583552 DOI: 10.3389/fgene.2023.1270085] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023] Open
Abstract
Background: Endoplasmic reticulum stress (ERS) is an important pathophysiological mechanism in ulcerative colitis (UC) and Crohn's disease (CD). ERS-related genes may be influenced by genetic factors and intestinal inflammation. However, the role of ERS as a trigger or potential etiological factor for UC and CD is unclear, as the expression of ERS-related genes in UC and CD may be the cause or subsequent changes in intestinal inflammation. Here, we used a three-step summary data-based Mendelian randomization (SMR) approach integrating multi-omics data to identify putative causal effects of ERS-related genes in UC and CD. Methods: Genome-wide association study (GWAS) summary data for UC (6,968 cases and 20,464 controls) and CD (5,956 cases and 14,927 controls) were extracted as outcome, and DNA methylation quantitative trait loci (mQTL, 1,980 participants) data and expression QTL data (eQTL, 31,684 participants) from the blood were obtained as exposure. The ERS-related genes were extracted from the GeneCards database, and then the GWAS summary data were integrated with the mQTL and eQTL data associated with ERS genes by SMR. Sensitivity analysis included two-sample MR analysis, power calculations, Bayesian co-localization analysis, and phenotype scanning were performed to evaluate the robustness of the results. Results: A total of 1,193 ERS-related genes were obtained. The three-step SMR analysis showed that cg24011261 CpG site regulating GPX1 expression was associated with a low risk of UC, whereas GPX1 expression regulated by a combination of cg05055782, cg24011261, and cg05551922 CpG sites was associated with a low risk of CD. Sensitivity analysis further supports these findings. Conclusion: This multi-omics integration study identifies a causal relationship between the role of ERS in UC and CD and suggests potential new therapeutic targets for clinical practice.
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Affiliation(s)
- Menglong Zou
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Qiaoli Liang
- Zhuhai Second Hospital of Chinese Medicine, Zhuhai, Guangdong, China
| | - Wei Zhang
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Ying Zhu
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Yin Xu
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
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6
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Egbujor MC, Tucci P, Onyeije UC, Emeruwa CN, Saso L. NRF2 Activation by Nitrogen Heterocycles: A Review. Molecules 2023; 28:2751. [PMID: 36985723 PMCID: PMC10058096 DOI: 10.3390/molecules28062751] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Several nitrogen heterocyclic analogues have been applied to clinical practice, and about 75% of drugs approved by the FDA contain at least a heterocyclic moiety. Thus, nitrogen heterocycles are beneficial scaffolds that occupy a central position in the development of new drugs. The fact that certain nitrogen heterocyclic compounds significantly activate the NRF2/ARE signaling pathway and upregulate the expression of NRF2-dependent genes, especially HO-1 and NQO1, underscores the need to study the roles and pharmacological effects of N-based heterocyclic moieties in NRF2 activation. Furthermore, nitrogen heterocycles exhibit significant antioxidant and anti-inflammatory activities. NRF2-activating molecules have been of tremendous research interest in recent times due to their therapeutic roles in neuroinflammation and oxidative stress-mediated diseases. A comprehensive review of the NRF2-inducing activities of N-based heterocycles and their derivatives will broaden their therapeutic prospects in a wide range of diseases. Thus, the present review, as the first of its kind, provides an overview of the roles and effects of nitrogen heterocyclic moieties in the activation of the NRF2 signaling pathway underpinning their antioxidant and anti-inflammatory actions in several diseases, their pharmacological properties and structural-activity relationship are also discussed with the aim of making new discoveries that will stimulate innovative research in this area.
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Affiliation(s)
- Melford C. Egbujor
- Department of Chemical Sciences, Rhema University Nigeria, Aba 453115, Nigeria
| | - Paolo Tucci
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Ugomma C. Onyeije
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka 420007, Nigeria
| | | | - Luciano Saso
- Department of Physiology and Pharmacology, Vittorio Erspamer, Sapienza University of Rome, 00161 Rome, Italy
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7
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Liu Y, Zhou L, Lv C, Liu L, Miao S, Xu Y, Li K, Zhao Y, Zhao J. PGE2 pathway mediates oxidative stress-induced ferroptosis in renal tubular epithelial cells. FEBS J 2023; 290:533-549. [PMID: 36031392 DOI: 10.1111/febs.16609] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/15/2022] [Accepted: 08/26/2022] [Indexed: 02/05/2023]
Abstract
Prostaglandin E2 (PGE2) is one of the most abundant prostaglandins and has been implicated in various diseases. Here, we aimed to explore the role of the PGE2 pathway in mediating ferroptosis during acute kidney injury. When renal tubular epithelial cells stimulated by H2 O2 , the contents of glutathione (GSH) and glutathione peroxidase 4 (GPX4) decreased, whereas the level of lipid peroxide increased. Ferrostatin-1 can effectively attenuate these changes. In this process, the expression levels of cyclooxygenase (COX)-1 and COX-2 were up-regulated. Meanwhile, the expression of microsomal prostaglandin E synthase-2 was elevated, whereas the expression of microsomal prostaglandin E synthase-1 and cytosolic prostaglandin E synthase were down-regulated. Furthermore, the expression of 15-hydroxyprostaglandin dehydrogenase decreased. An excessive accumulation of PGE2 promoted ferroptosis, whereas the PGE2 inhibitor pranoprofen minimized the changes for COX-2, GSH, GPX4 and lipid peroxides. A decrease in the levels of the PGE2 receptor E-series of prostaglandin 1/3 partially restored the decline of GSH and GPX4 levels and inhibited the aggravation of lipid peroxide. Consistent with the in vitro results, increased PGE2 levels led to increased levels of 3,4-methylenedioxyamphetamine, Fe2+ accumulation and decreased GSH and GPX4 levels during renal ischaemia/reperfusion injury injury in mice. Our results indicate that the PGE2 pathway mediated oxidative stress-induced ferroptosis in renal tubular epithelial cells.
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Affiliation(s)
- Ying Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Lin Zhou
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Caihong Lv
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Lingyun Liu
- Hengyang School of Medicine, University of South China, Hengyang, China
| | - Shuying Miao
- Department of Pathology, Nanjing Drum Tower Hospital, Nanjing University Medical School, China
| | - Yunfei Xu
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Kexin Li
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Yao Zhao
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, China.,Sepsis Translational Medicine Key Lab of Hunan Province, Changsha, China
| | - Jie Zhao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
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8
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Xia S, Gao W, Li Y, Ma J, Gong S, Gao Z, Tang W, Tian W, Tang S. Effects of melatonin on intestinal function and bacterial compositions in sucking piglets. J Anim Physiol Anim Nutr (Berl) 2022; 106:1139-1148. [PMID: 35023236 DOI: 10.1111/jpn.13675] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/21/2021] [Accepted: 07/04/2021] [Indexed: 12/18/2022]
Abstract
Melatonin has been reported to affect intestinal function by targeting microbiome, morphological structure, barrier integrity and nutrient absorptive system. While the effect of melatonin on intestinal development in newborn infants is obscure, thus, this study firstly attempted to investigate the hypothesis that melatonin treatment improves intestinal development in sucking piglets. 14 healthy newborn piglets received 10 ml melatonin solution (1 mg/ml) or drinking water (n = 7) for 21 days. The results showed that oral administration of melatonin increased liver relative weight (p < 0.05) but failed to affect growth performance in sucking piglets (p > 0.05). Immunostaining jejunal samples from melatonin group showed high expressions of nnos and claudin1, indicating that melatonin improved intestinal neural development and barrier integrity. Also, melatonin promoted intestinal absorptive function evidenced by the increased serum proline concentration in melatonin-treated piglets compared with the control (p < 0.05). Gut microbiota compositions were tested by 16S rDNA sequencing and the results showed that melatonin increased the relative abundance of Actinobacteria compared with the control (p < 0.05) at the phylum level. However, Selenomonadales was markedly reduced compared with the control at the order level (p < 0.05). Gut and faecal volatile fatty acids were tested to evaluate the microbiota metabolism, but no difference was noticed in volatile fatty acid concentrations (p > 0.05). Melatonin improved intestinal development by affecting neural development, barrier integrity, nutrient absorption and microbiota in sucking piglets.
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Affiliation(s)
- Siting Xia
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Wei Gao
- Animal Husbandry and Aquatic Affairs Center of Shimen County, Changde, China
| | - Yunxia Li
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Jie Ma
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Saiming Gong
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Zhipeng Gao
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Wenjie Tang
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China.,Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Academy of Animal Sciences, Chengdu, China
| | - Wen Tian
- Hunan Jiuding Technology (Group) Co., Ltd, Yangzhou, China
| | - Shengguo Tang
- College of Animal Science and Technology, Hunan Agriculture University, Changsha, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
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9
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Chen Y, Wu W, Zhou H, Liu X, Li S, Guo Y, Li Y, Wang Y, Yuan J. Selenium Nanoparticles Improved Intestinal Health Through Modulation of the NLRP3 Signaling Pathway. Front Nutr 2022; 9:907386. [PMID: 35911113 PMCID: PMC9331919 DOI: 10.3389/fnut.2022.907386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/14/2022] [Indexed: 11/15/2022] Open
Abstract
Selenium nanoparticles (SeNPs) play important roles in promoting animal health, however, their impact on intestinal health remains elusive. This study was intended to evaluate the effects of different doses of SeNPs on the intestinal health, especially the development of goblet cells in the broiler jejunum. A total of 480 1-day-old Arbor Acres broilers were randomly allotted to 5 treatments with 6 replications of 16 chicks each. Birds were fed with low selenium corn-soybean meal-based diets supplemented with 0.1, 0.2, 0.3, or 0.4 mg/kg of SeNPs. On d 21, dietary supplementation of SeNPs effectively reduced the mortality of broilers. The villus height and the villus height/crypt depth ratio of the jejunum showed significant quadratic effects with the increasing concentration of SeNPs (P < 0.05). The mRNA expression of zonula occluden-1 (ZO-1), ZO-2, claudin-3, and claudin-5 in the jejunum decreased linearly with the increasing dose of SeNPs (P < 0.05). The mRNA expression levels of interleukin 1 beta (IL-1β), IL-18, and the concentration of reactive oxygen species (ROS) in the jejunum decreased linearly with the increase of SeNPs concentration (P < 0.05). Compared with the control group, the number of goblet cells in the jejunum was significantly increased by adding 0.1 and 0.4 mg/kg SeNPs(P < 0.05). In addition, the mRNA expression of Mucin2 (Muc2) showed a significant quadratic relationship that increased after adding 0.1 mg/kg SeNPs (P < 0.05). Dietary SeNPs also linearly reduced the expression of v-myc avian myelocytomatosis viral oncogene homolog (c-myc) (P < 0.05). The mean density of TUNEL positive cells in the 0.2 and 0.4 mg/kg SeNPs groups were lower than the control group (P < 0.05). Similarly, the mRNA expression levels of B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X (Bax), NLR family pyrin domain containing 3 (NLRP3), cysteinyl aspartate specific proteinase-1 (Caspase-1), toll-like receptor-2 (TLR-2), and myeloid differentiation factor 88 (MyD88) in the jejunum decreased linearly with the increase of SeNPs concentration (P < 0.05). Results show that supplementation with 0.2 mg/kg SeNPs may decrease intestinal oxidative stress and inflammation by modifying the activation of NLRP3 signaling pathway, which can effectively promote intestinal goblet cells of 21-day-old broilers.
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Affiliation(s)
- Yanhong Chen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wei Wu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Huajin Zhou
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xingbo Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shu Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yanbing Guo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Yuxin Li
- Beijing Wahmix Bio-Technology Co., Ltd., Tangshan, China
| | - Yongqiang Wang
- Microbiology and Immunology Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, China
- *Correspondence: Yongqiang Wang
| | - Jianmin Yuan
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
- Jianmin Yuan
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10
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Huang WQ, Huang HL, Peng W, Liu YD, Zhou YL, Xu HM, Zhang LJ, Zhao C, Nie YQ. Altered Pattern of Immunoglobulin A-Targeted Microbiota in Inflammatory Bowel Disease After Fecal Transplantation. Front Microbiol 2022; 13:873018. [PMID: 35814647 PMCID: PMC9257281 DOI: 10.3389/fmicb.2022.873018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/09/2022] [Indexed: 12/02/2022] Open
Abstract
Adaptive immune response to the gut microbiota is one of the main drivers of inflammatory bowel disease (IBD). Under inflammatory conditions, immunoglobulin (Ig)-targeted bacteria are altered. However, changes in Ig-targeted bacteria in Asian patients with IBD with ulcerative colitis (UC) remain unclear. Furthermore, changes in IgA-targeted bacteria in patients with UC treated with fecal microbiota transplantation (FMT) are unclear. Here, we analyzed fecal samples of patients with IBD and patients with UC before and after FMT by flow cytometry. We found that the percentage of IgA/G-coated bacteria can be used to assess the severity of IBD. Besides oral pharyngeal bacteria such as Streptococcus, we hypothesized that Megamonas, Acinetobacter, and, especially, Staphylococcus might play an important role in IBD pathogenesis. Moreover, we evaluated the influence of FMT on IgA-coated bacteria in patients with UC. We found that IgA-bacterial interactions were re-established in human FMT recipients and resembled those in the healthy fecal donors. Additionally, the IgA targeting was not influenced by delivery methods: gastroscopy spraying and colonic transendoscopic enteral tubing (TET). Then, we established an acute dextran sulfate sodium (DSS)-induced mouse model to explore whether FMT intervention would impact IgA/G memory B cell in the intestine. We found that after FMT, both IgA/G memory B cell and the percentage of IgA/G-targeted bacteria were restored to normal levels in DSS mice.
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Affiliation(s)
- Wen-qi Huang
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
| | - Hong-Li Huang
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
| | - Wu Peng
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
| | - Yan-Di Liu
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, Guangzhou, China
| | - You-Lian Zhou
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
| | - Hao-Ming Xu
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, Guangzhou, China
| | - Liang-jie Zhang
- Department of Infectious Disease, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Chong Zhao
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
| | - Yu-Qiang Nie
- Department of Gastroenterology, School of Medicine, The Second Affiliated Hospital, South China University of Technology, Guangzhou, China
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11
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Ram AK, Vairappan B, Srinivas BH. Nimbolide attenuates gut dysbiosis and prevents bacterial translocation by improving intestinal barrier integrity and ameliorating inflammation in hepatocellular carcinoma. Phytother Res 2022; 36:2143-2160. [PMID: 35229912 DOI: 10.1002/ptr.7434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/04/2022] [Accepted: 02/16/2022] [Indexed: 09/25/2023]
Abstract
Gut microbiota imbalance plays a key pathological role in hepatocellular carcinoma (HCC) progression; however, the mechanism is poorly understood. We previously showed nimbolide impede tumor development by improving hepatic tight junction (TJ) proteins expression and attenuating inflammation in HCC mice. Here, we aimed to study the role of nimbolide in regulating gut microbiota imbalance and bacterial translocation (BT) through modulating intestinal TJ proteins in an experimental hepatocarcinogenesis. Nimbolide (6 mg/kg) was administered orally for 4 weeks following induction of HCC in mice at the 28th week. Nimbolide treatment attenuated the gut microbiota imbalance by decreasing 16 s rRNA levels of Escherichia coli, Enterococcus, Bacteroides and increasing Bifidobacterium, and Lactobacillus in the intestinal tissue, which was otherwise altered in HCC mice. Furthermore, nimbolide improved intestinal barrier integrity in HCC mice by upregulating TJ proteins such as occludin and ZO-1 expression and subsequently prevented hepatic BT and decreased BT markers such as LBP, sCD14, and procalcitonin in the plasma of HCC mice. Moreover, nimbolide ameliorated intestinal and hepatic inflammation by downregulating TLR4, MyD88, and NF-κB protein expression in HCC mice. Thus, nimbolide represents a novel therapeutic drug for HCC treatment by targeting the gut-liver axis, which plays an imperative role in HCC pathogenesis.
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Affiliation(s)
- Amit Kumar Ram
- Liver Diseases Research Lab, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Balasubramaniyan Vairappan
- Liver Diseases Research Lab, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Bheemanathi Hanuman Srinivas
- Department of Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
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12
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Li JY, Yao YM, Tian YP. Ferroptosis: A Trigger of Proinflammatory State Progression to Immunogenicity in Necroinflammatory Disease. Front Immunol 2021; 12:701163. [PMID: 34489948 PMCID: PMC8418153 DOI: 10.3389/fimmu.2021.701163] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/02/2021] [Indexed: 01/02/2023] Open
Abstract
Until recently, necrosis is generally regarded as traumatic cell death due to mechanical shear stress or other physicochemical factors, while apoptosis is commonly thought to be programmed cell death, which is silent to immunological response. Actually, multiple modalities of cell death are programmed to maintain systematic immunity. Programmed necrosis, such as necrosis, pyroptosis, and ferroptosis, are inherently more immunogenic than apoptosis. Programmed necrosis leads to the release of inflammatory cytokines, defined as danger-associated molecular patterns (DAMPs), resulting in a necroinflammatory response, which can drive the proinflammatory state under certain biological circumstances. Ferroptosis as a newly discovered non-apoptotic form of cell death, is characterized by excessive lipid peroxidation and overload iron, which occurs in cancer, neurodegeneration, immune and inflammatory diseases, as well as ischemia/reperfusion (I/R) injury. It is triggered by a surplus of reactive oxygen species (ROS) induced in an imbalanced redox reaction due to the decrease in glutathione synthesis and inaction of enzyme glutathione peroxidase 4 (GPX4). Ferroptosis is considered as a potential therapeutic and molecular target for the treatment of necroinflammatory disease, and further investigation into the underlying pathophysiological characteristics and molecular mechanisms implicated may lay the foundations for an interventional therapeutic strategy. This review aims to demonstrate the key roles of ferroptosis in the development of necroinflammatory diseases, the major regulatory mechanisms involved, and its potential as a therapeutic target.
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Affiliation(s)
- Jing-yan Li
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yong-ming Yao
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing, China
| | - Ying-ping Tian
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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13
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Xu HM, Huang HL, Xu J, He J, Zhao C, Peng Y, Zhao HL, Huang WQ, Cao CY, Zhou YJ, Zhou YL, Nie YQ. Cross-Talk Between Butyric Acid and Gut Microbiota in Ulcerative Colitis Following Fecal Microbiota Transplantation. Front Microbiol 2021; 12:658292. [PMID: 33912150 PMCID: PMC8071877 DOI: 10.3389/fmicb.2021.658292] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/11/2021] [Indexed: 12/15/2022] Open
Abstract
Fecal microbiota transplantation (FMT) can inhibit the progression of ulcerative colitis (UC). However, how FMT modulates the gut microbiota and which biomarker is valuable for evaluating the efficacy of FMT have not been clarified. This study aimed to determine the changes in the gut microbiota and their relationship with butyric acid following FMT for UC. Fecal microbiota (FM) was isolated from healthy individuals or mice and transplanted into 12 UC patients or colitis mice induced by dextran sulfate sodium (DSS). Their clinical colitis severities were monitored. Their gut microbiota were analyzed by 16S sequencing and bioinformatics. The levels of fecal short-chain fatty acids (SCFAs) from five UC patients with recurrent symptoms after FMT and individual mice were quantified by liquid chromatography-mass spectrometry (LC-MS). The impact of butyric acid on the abundance and diversity of the gut microbiota was tested in vitro. The effect of the combination of butyric acid-producing bacterium and FMT on the clinical responses of 45 UC patients was retrospectively analyzed. Compared with that in the controls, the FMT significantly increased the abundance of butyric acid-producing bacteria and fecal butyric acid levels in UC patients. The FMT significantly increased the α-diversity, changed gut microbial structure, and elevated fecal butyric acid levels in colitis mice. Anaerobic culture with butyrate significantly increased the α-diversity of the gut microbiota from colitis mice and changed their structure. FMT combination with Clostridium butyricum-containing probiotics significantly prolonged the UC remission in the clinic. Therefore, fecal butyric acid level may be a biomarker for evaluating the efficacy of FMT for UC, and addition of butyrate-producing bacteria may prolong the therapeutic effect of FMT on UC by changing the gut microbiota.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - You-Lian Zhou
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yu-Qiang Nie
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
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14
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Cheng X, Sun B, Liu S, Li D, Yang X, Zhang Y. Identification of thrombomodulin as a dynamic monitoring biomarker for deep venous thrombosis evolution. Exp Ther Med 2021; 21:142. [PMID: 33456509 PMCID: PMC7791923 DOI: 10.3892/etm.2020.9574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/26/2020] [Indexed: 01/14/2023] Open
Abstract
It has been demonstrated that thrombomodulin (TM) serves an important role in the formation of deep venous thrombosis (DVT) and is regarded to be a marker that can be used to measure vascular endothelial cell damage. However, how TM levels change during DVT evolution has not yet been well understood. The current study aimed to investigate the dynamic changes of TM during the evolution of DVT and explore the possible mechanisms behind these. A total of 48 patients newly diagnosed with DVT and 23 matched healthy controls were enrolled in the present study, and their plasma TM levels were examined and compared. In addition, a DVT model was established using Sprague-Dawley rats via the 'stenosis' method. The thrombi size, histopathologic changes and expression of TM and NF-κB in plasma and venous endothelium were measured at 9 different time points (1, 4, 6, 12 and 24 h, and at 3, 7, 14 and 21 days). Finally, the effect of inhibiting the activation of NF-κB on TM was investigated using pyrrolidine dithiocarbamate (PDTC), which is a potent inhibitor of the NF-κB pathway. The results of the current study indicated that the mean level of plasma TM in patients with DVT was significantly increased compared with healthy controls. In addition, thrombi size (clot length and weight), TM and NF-κB expression in the animal model plasma exhibited three distinct periods (1-12, 24 h-day 7 and 14-21) of markedly different results between periods. Immunofluorescence results confirmed the co-localization of TM and NF-κB in endothelial cells. In addition, it was indicated that the expression of TM in the endothelium of DVT models was upregulated compared with the control, while NF-κB was significantly downregulated. Following the administration of PDTC, the level of NF-κB and TM in the plasma were decreased significantly dose-dependently. The results of the current study suggested that TM was involved in the evolution of DVT and may be used as a dynamic biomarker to measure disease activity. Furthermore, the expression of TM during the evolution of DVT was indicated to be associated with the NF-κB signaling pathway.
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Affiliation(s)
- Xi Cheng
- Medical College, Nantong University, Nantong, Jiangsu 226001, P.R. China
- Laboratory Animal Center, Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Baolan Sun
- Medical College, Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Shiyi Liu
- Medical College, Nantong University, Nantong, Jiangsu 226001, P.R. China
- Laboratory Animal Center, Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Dandan Li
- Medical College, Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Xiaoqing Yang
- Department of Gynecology and Obstetrics, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Yuquan Zhang
- Department of Gynecology and Obstetrics, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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15
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Lv S, Luo H, Huang K, Zhu X. The Prognostic Role of Glutathione Peroxidase 1 and Immune Infiltrates in Glioma Investigated Using Public Datasets. Med Sci Monit 2020; 26:e926440. [PMID: 33085656 PMCID: PMC7590522 DOI: 10.12659/msm.926440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Glutathione peroxidase 1 (GPX1) is an essential component of the intracellular antioxidant enzyme system, but little is known about the role of GPX1 in the progression of malignancy in gliomas. Using public datasets, this study investigated the prognostic role of GPX1 and immune infiltrates in glioma. MATERIAL AND METHODS We investigated GPX1 expression levels in different cancers using the ONCOMINE and Tumor Immune Estimation Resource (TIMER) datasets. We also explored the prognostic landscape of GPX1 in gliomas based on The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA) datasets. Some significant pathways were identified by function enrichment analysis. We then explored the association between GPX1 expression and levels of tumor-infiltrating immune cells based on TIMER and Gene Expression Profiling Interactive Analysis (GEPIA) datasets. RESULTS Expression of GPX1 in brain and central nervous system cancers is at a much high level than in normal tissues, and it is higher in glioblastoma (GBM) than in lower-grade glioma (LGG). We found GPX1 expression to be positively correlated with the malignant clinicopathologic characteristics of gliomas. Univariate analysis and multivariate analysis revealed that overexpression of GPX1 was correlated with a worse prognosis in patients, and a nomogram indicated that GPX1 expression can predict clinical prognosis of glioma. Function enrichment analysis showed that some important pathways are related to glioma malignancy. Expression of GPX1 was positively associated with infiltrating levels of 6 types of immune cells and most of their gene markers in GBM and LGG. CONCLUSIONS These results indicate that GPX1 is an independent prognostic factor and a novel biomarker for predicting the progression of malignancy in gliomas, which is associated with immune infiltration.
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Affiliation(s)
- Shigang Lv
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China (mainland).,Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China (mainland)
| | - Haitao Luo
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China (mainland).,East China Institute of Digital Medical Engineering, Shangrao, Jiangxi, China (mainland)
| | - Kai Huang
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China (mainland).,Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China (mainland)
| | - Xingen Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China (mainland).,Institute of Neuroscience, Nanchang University, Nanchang, Jiangxi, China (mainland)
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16
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Yang Y, Liu L, Liu X, Zhang Y, Shi H, Jia W, Zhu H, Jia H, Liu M, Bai X. Extracellular Vesicles Derived From Trichinella spiralis Muscle Larvae Ameliorate TNBS-Induced Colitis in Mice. Front Immunol 2020; 11:1174. [PMID: 32595641 PMCID: PMC7300183 DOI: 10.3389/fimmu.2020.01174] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/12/2020] [Indexed: 01/01/2023] Open
Abstract
Helminths are masters at modulating the host immune response through a wide variety of versatile mechanisms. These complex strategies facilitate parasite survival in the host and can also be exploited to prevent chronic immune disorders by minimizing excessive inflammation. Extracellular vesicles (EVs) are small membrane-bound structures secreted by helminths which mediate immune evasion during parasite infection. The goal of this study was to investigate the immunoregulatory properties of Trichinella spiralis EVs (Ts-EVs) in a murine model of colitis. We found that Ts-EVs significantly ameliorated 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis in mice. Ts-EVs alleviated intestinal epithelium barrier damage, markedly reduced pro-inflammatory cytokine secretion and neutrophil infiltration, and upregulated immunoregulatory cytokine expression in colon tissue. Ts-EVs also modulated the adaptive immune response by influencing T-cell composition. The numbers of Th1 and Th17 cells in MLNs, as well as the expression levels of Th1/Th17-associated cytokines and transcription factors in colon were reduced. In contrast, Th2 and Treg cells were increased after Ts-EVs treatment. Furthermore, sequencing of EV-derived microRNAs (miRNAs) indicated that an array of miRNAs was involved in the regulation of the host immune response, including inflammation. These findings expand our knowledge of host-parasite interactions, and may help design novel and effective strategies to prevent parasite infections or to treat inflammatory diseases like IBD. Further studies are needed to identify the specific cargo molecules carried by Ts-EVs and to clarify their roles during T. spiralis infection.
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Affiliation(s)
- Yong Yang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Lei Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiaolei Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - YuanYuan Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Haining Shi
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital, Boston, MA, United States
| | - Wanzhong Jia
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - HongFei Zhu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hong Jia
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mingyuan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Xue Bai
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
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Administration of Exogenous Melatonin Improves the Diurnal Rhythms of the Gut Microbiota in Mice Fed a High-Fat Diet. mSystems 2020; 5:5/3/e00002-20. [PMID: 32430404 PMCID: PMC7253360 DOI: 10.1128/msystems.00002-20] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The gut microbiota is strongly shaped by a high-fat diet, and obese humans and animals are characterized by low gut microbial diversity and impaired gut microbiota compositions. Comprehensive data on mammalian gut metagenomes shows gut microbiota exhibit circadian rhythms, which is disturbed by a high-fat diet. On the other hand, melatonin is a natural and ubiquitous molecule showing multiple mechanisms of regulating the circadian clock and lipid metabolism, while the role of melatonin in the regulation of the diurnal patterns of gut microbial structure and function in obese animals is not yet known. This study delineates an intricate picture of melatonin-gut microbiota circadian rhythms and may provide insight for obesity intervention. Melatonin, a circadian hormone, has been reported to improve host lipid metabolism by reprogramming the gut microbiota, which also exhibits rhythmicity in a light/dark cycle. However, the effect of the administration of exogenous melatonin on the diurnal variation in the gut microbiota in mice fed a high-fat diet (HFD) is unclear. Here, we further confirmed the antiobesogenic effect of melatonin on mice fed an HFD for 2 weeks. Samples were collected every 4 h within a 24-h period, and diurnal rhythms of clock gene expression (Clock, Cry1, Cry2, Per1, and Per2) and serum lipid indexes varied with diurnal time. Notably, Clock and triglycerides (TG) showed a marked rhythm in the control in melatonin-treated mice but not in the HFD-fed mice. The rhythmicity of these parameters was similar between the control and melatonin-treated HFD-fed mice compared with that in the HFD group, indicating an improvement caused by melatonin in the diurnal clock of host metabolism in HFD-fed mice. Moreover, 16S rRNA gene sequencing showed that most microbes exhibited daily rhythmicity, and the trends were different for different groups and at different time points. We also identified several specific microbes that correlated with the circadian clock genes and serum lipid indexes, which might indicate the potential mechanism of action of melatonin in HFD-fed mice. In addition, effects of melatonin exposure during daytime or nighttime were compared, but a nonsignificant difference was noticed in response to HFD-induced lipid dysmetabolism. Interestingly, the responses of microbiota-transplanted mice to HFD feeding also varied at different transplantation times (8:00 and 16:00) and with different microbiota donors. In summary, the daily oscillations in the expression of circadian clock genes, serum lipid indexes, and the gut microbiota appeared to be driven by short-term feeding of an HFD, while administration of exogenous melatonin improved the composition and diurnal rhythmicity of some specific gut microbiota in HFD-fed mice. IMPORTANCE The gut microbiota is strongly shaped by a high-fat diet, and obese humans and animals are characterized by low gut microbial diversity and impaired gut microbiota compositions. Comprehensive data on mammalian gut metagenomes shows gut microbiota exhibit circadian rhythms, which is disturbed by a high-fat diet. On the other hand, melatonin is a natural and ubiquitous molecule showing multiple mechanisms of regulating the circadian clock and lipid metabolism, while the role of melatonin in the regulation of the diurnal patterns of gut microbial structure and function in obese animals is not yet known. This study delineates an intricate picture of melatonin-gut microbiota circadian rhythms and may provide insight for obesity intervention.
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18
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Ajibade PA, Fatokun AA, Andrew FP. Synthesis, characterization and anti-cancer studies of Mn(II), Cu(II), Zn(II) and Pt(II) dithiocarbamate complexes - crystal structures of the Cu(II) and Pt(II) complexes. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119431] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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19
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Saba E, Lee YY, Kim M, Hyun SH, Park CK, Son E, Kim DS, Kim SD, Rhee MH. A novel herbal formulation consisting of red ginseng extract and Epimedium koreanum Nakai-attenuated dextran sulfate sodium-induced colitis in mice. J Ginseng Res 2020; 44:833-842. [PMID: 33192127 PMCID: PMC7655509 DOI: 10.1016/j.jgr.2020.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 02/25/2020] [Indexed: 01/07/2023] Open
Abstract
Background Ulcerative colitis (UC) is a commonly encountered large intestine disease in the contemporary world that terminates into colorectal cancer; therefore, the timely treatment of UC is of major concern. Panax ginseng Meyer is an extensively consumed herbal commodity in South East Asian countries, especially Korea. It exhibits a wide range of biologically beneficial qualities for almost head-to-toe ailments in the body. Epimedium koreanum Nakai (EKN) is also a widely used traditional Korean herbal medicine used for treating infertility, rheumatism, and cardiovascular diseases. Materials and methods Separately the anti-inflammatory activities of both red ginseng extracts (RGEs) and EKNs had been demonstrated in the past in various inflammatory models; however, we sought to unravel the anti-inflammatory activities of the combination of these two extracts in dextran sulfate sodium (DSS)-induced ulcerative colitis in mice model because the allopathic remedies for UC involve more side effects than benefits. Results Our results have shown that the combination of RGE + EKN synergistically alleviated the macroscopic lesions in DSS-induced colitic mice such as colon shortening, hematochezia, and weight loss. Moreover, it restored the histopathological lesions in mice and decreased the levels of pro-inflammatory mediators and cytokines through the repression of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP-3) expression. In vitro, this combination also reduced the magnitude of nitric acid (NO), pro-inflammatory mediators and cytokine through NF-κB and mitogen-activated protein kinase (MAPK) pathways in RAW 264.7 mouse macrophage cells. Conclusion In the light of these findings, we can endorse this combination extract as a functional food for the prophylactic as well as therapeutic treatment of UC in humans together with allopathic remedies.
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Affiliation(s)
- Evelyn Saba
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Veterinary Biomedical Sciences, Faculty of Veterinary and Animal Sciences, Pir Mehr Ali Shah- Arid Agriculture University, Rawalpindi, Pakistan
| | - Yuan Yee Lee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Minki Kim
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sun-Hee Hyun
- R&D Headquarters, Korean Ginseng Cooperation, Daejeon, Republic of Korea
| | - Chae-Kyu Park
- R&D Headquarters, Korean Ginseng Cooperation, Daejeon, Republic of Korea
| | - Eunjung Son
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Dong-Seon Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Sung-Dae Kim
- Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan, Republic of Korea
| | - Man Hee Rhee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
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Bian Y, Dong Y, Sun J, Sun M, Hou Q, Lai Y, Zhang B. Protective Effect of Kaempferol on LPS-Induced Inflammation and Barrier Dysfunction in a Coculture Model of Intestinal Epithelial Cells and Intestinal Microvascular Endothelial Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:160-167. [PMID: 31825618 DOI: 10.1021/acs.jafc.9b06294] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory disease of intestinal mucosa and submucosa, characterized by the disruption of the intestinal epithelial barrier, increased production of inflammatory mediators, and excessive tissue injury. Intestinal epithelial cells, as well as microvascular endothelial cells, play important roles in IBD. To study the potential effects of kaempferol in IBD progress, we established a novel epithelial-endothelial cells coculture model to investigate the intestinal inflammation and barrier function. Data demonstrated an obvious increased transepithelial electrical resistance (TEER) (1222 ± 60.40 Ω cm2 vs 1371 ± 38.77 Ω cm2), decreased flux of FITC (180.8 ± 20.06 μg/mL vs 136.7 ± 14.78 μg/mL), and up-regulated occludin and claudin-2 expression in Caco-2 that was specifically cocultured with endothelial cells. Meanwhile, 80 μM kaempferol alleviated the drop of TEER, the increase of FITC flux, and the overexpression of interleukin-8 (IL-8) induced by 1 μg/mL lipopolysaccharide (LPS). Additionally, kaempferol also ameliorated the LPS-induced decrease of protein expression of zonula occludens-1 (ZO-1), occludin, and claudin-2, together with the inhibited protein expressions of the phosphorylation level of NF-κB and I-κB induced by LPS. Our results suggest that kaempferol alleviates the IL-8 secretion and barrier dysfunction of the Caco-2 monolayer in the LPS-induced epithelial-endothelial coculture model via inhibiting the NF-κB signaling pathway activation.
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Affiliation(s)
- Yifei Bian
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Yuanyang Dong
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Jingjing Sun
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Meng Sun
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Qihang Hou
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Yujiao Lai
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Yuanmingyuan West Road , Haidian District, Beijing , 100193 , China
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21
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Yan X, Lu QG, Zeng L, Li XH, Liu Y, Du XF, Bai GM. Synergistic protection of astragalus polysaccharides and matrine against ulcerative colitis and associated lung injury in rats. World J Gastroenterol 2020; 26:55-69. [PMID: 31933514 PMCID: PMC6952295 DOI: 10.3748/wjg.v26.i1.55] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 11/29/2019] [Accepted: 12/14/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a main form of inflammatory bowel disease. Due to complicated etiology and a high rate of recurrence, it is quite essential to elucidate the underlying mechanism of and search for effective therapeutic methods for UC. AIM To investigate the effects of astragalus polysaccharides (APS) combined with matrine on UC and associated lung injury. METHODS UC was induced in rats by colon mucosal tissue sensitization combined with trinitro-benzene-sulfonic acid-ethanol. Then, the effects of the treatments of salazopyrine, APS, matrine, and APS combined with matrine on histopathological changes of lung and colon tissues, disease activity index (DAI), colon mucosal damage index (CMDI), serum endotoxin (ET) level, serum diamine oxidase (DAO) activity, the contents of tumor necrosis factor-α and interleukin-1β, and the activities of myeloperoxidase, superoxide dismutase, and malondialdehyde in lung tissues, as well as the protein expression of zonula occludens (ZO)-1, Occludin, and trefoil factor 3 (TFF3) were detected in UC rats. RESULTS The treatments of salazopyrine, APS, matrine, and APS combined with matrine reduced DAI scores and improved histopathological changes of colon and lung tissues, as well as decreased CMDI scores, ET levels, and DAO activities in UC rats. Moreover, in lung tissues, inflammatory response and oxidative stress injury were relieved after the treatments of salazopyrine, APS, matrine, and APS combined with matrine in UC rats. Furthermore, the expression of ZO-1, Occludin, and TFF3 in lung and colon tissues was increased after different treatments in UC rats. Notably, APS combined with matrine exerted a better protective effect against UC and lung injury compared with other treatments. CONCLUSION APS combined with matrine exert a synergistic protective effect against UC and lung injury, which might be associated with regulating TFF3 expression.
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Affiliation(s)
- Xin Yan
- College of Traditional Chinese Medicine, North China University of Science and Technology, Tangshan 063210, Hebei Province, China
| | - Qing-Ge Lu
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
| | - Li Zeng
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
| | - Xiao-Hai Li
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
| | - Yu Liu
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
| | - Xue-Feng Du
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
| | - Guo-Min Bai
- Department of Anorectal Medicine, Tangshan Traditional Chinese Medicine Hospital, Tangshan 063000, Hebei Province, China
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22
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Nunes C, Freitas V, Almeida L, Laranjinha J. Red wine extract preserves tight junctions in intestinal epithelial cells under inflammatory conditions: implications for intestinal inflammation. Food Funct 2019; 10:1364-1374. [PMID: 30735221 DOI: 10.1039/c8fo02469c] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The altered expression and subcellular distribution of tight junction (TJ) proteins, leading to a dysfunctional intestinal barrier, is a key mechanistic feature of inflammatory bowel disease (IBD). Therefore, increasing the integrity of the intestinal barrier by manipulating the TJ may constitute an innovative and effective therapeutic strategy in IBD. In this context, recent studies showed that dietary polyphenols are able to protect the intestinal TJ barrier integrity. Here, using a cellular model of intestinal inflammation, consisting of cytokine-stimulated HT-29 colon epithelial cells, we show that a polyphenolic extract obtained from Portuguese red wine (RWE) decreased the paracellular permeability across the cell monolayer compared with the control cells, even in the presence of pro-inflammatory cytokines. The beneficial effect of RWE was exerted at three complementary levels: (1) by promoting a significant increase of the mRNA of key barrier-forming TJ proteins, including occludin, claudin-5 and zonnula occludens (ZO)-1 above the levels observed in the control cells; (2) by preventing the decrease in the expression of these proteins under inflammatory conditions and (3) by averting the increase in claudin-2 mRNA, a channel-forming TJ protein induced by pro-inflammatory cytokines. Taken together, these results strongly suggest that polyphenols presented and consumed in red wine as a mixture can reinforce and protect the intestinal barrier against inflammatory stimulus by affecting the TJ protein expression and, thus, without the need for purifying individual compounds, might represent a readily available therapeutic intervention against IBD and intestinal inflammation.
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Affiliation(s)
- Carla Nunes
- Center for Neurosciences and Cell Biology and Faculty of Pharmacy, University of Coimbra, Health Sciences Campus, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
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23
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Chen S, Wang M, Yin L, Ren W, Bin P, Xia Y, Liu G, Yang H, Tan B, Yin Y. Effects of dietary tryptophan supplementation in the acetic acid-induced colitis mouse model. Food Funct 2018; 9:4143-4152. [PMID: 30042998 DOI: 10.1039/c8fo01025k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Inflammatory bowel disease (IBD) is characterized by chronic inflammation of the gastrointestinal tract and is strongly associated with intestinal immunity and the microbiome. Tryptophan (Trp) is an inflammatory inhibitor and modulator of the intestinal microflora. We explored the serum profile of amino acids and the effects of diet supplementation with Trp (1.0 g kg-1) on intestinal immunity and microbiota in the acetic acid-induced colitis mouse model. We analyzed the survival rate, colonic morphological parameters, profiles of serum amino acids, microbiota in colonic contents and the relative gene abundance of intestinal proinflammatory cytokines. Although the dietary Trp supplementation failed to improve the survival rate and ameliorate the morphological parameters of colon in mice with colitis, Trp modulated the general serum amino acid profile by reducing the amino acid profiles of threonine, methionine and proline, affected intestinal immunity by inhibiting the colonic expression of interleukin-22 and changed the microbiota by reducing the abundance of Candidatus, Clostridium and Coprococcus at the genus level. In conclusion, dietary Trp supplementation in a mouse model of colitis did not ameliorate the survival rate and morphological parameters of colon but did modulate the serum amino acid profiles, intestinal immunity and microbiota. These findings enhance our understanding of the roles of Trp in the metabolism of serum amino acids, intestinal immunity and microbiota.
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Affiliation(s)
- Shuai Chen
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan 410125, China.
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Effect of Quercetin Monoglycosides on Oxidative Stress and Gut Microbiota Diversity in Mice with Dextran Sodium Sulphate-Induced Colitis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8343052. [PMID: 30539022 PMCID: PMC6260418 DOI: 10.1155/2018/8343052] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 11/07/2018] [Indexed: 12/18/2022]
Abstract
The pathogenesis of inflammatory bowel disease (IBD) is linked to an intricate association of environmental, microbial, and host-related factors. This study examined the potential effects of dietary addition of two preparations from onion, one comprising quercetin aglycone alone (Q: 0.15% polyphenols, quercetin aglycone:quercetin monoglycosides, 98:2) and another comprising quercetin aglycone with monoglycosides (Q+MQ: 0.15% total polyphenols, quercetin aglycone:quercetin monoglycosides, 69:31), on dextran sodium sulphate- (DSS-) induced colitis in mice. The results revealed a significant decrease in the body weight gain of the mice with DSS-induced colitis, which was counteracted by the dietary Q or Q+MQ supplementation. Meanwhile, the oxidative stress indicated by myeloperoxidase (MPO), reduced glutathione (GSH), malondialdehyde (MDA), and serum nitrate (NO) concentrations was higher in mice with DSS-induced colitis than in the control group mice, but dietary Q or Q+MQ supplementation counteracted this trend. The colitis mice demonstrated reduced Chao1, angiotensin-converting enzyme (ACE), and Shannon indices and an increased Simpson index, but the colitis mice receiving dietary Q or Q+MQ exhibited higher Chao1, ACE, and Shannon indices and a reduced Simpson index. In conclusion, this research showed that even at a low dose, dietary Q or Q+MQ supplementation counteracts DSS-induced colitis in mice, indicating that Q or Q+MQ may be used as an adjuvant therapy for IBD patients.
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Yin J, Li Y, Han H, Chen S, Gao J, Liu G, Wu X, Deng J, Yu Q, Huang X, Fang R, Li T, Reiter RJ, Zhang D, Zhu C, Zhu G, Ren W, Yin Y. Melatonin reprogramming of gut microbiota improves lipid dysmetabolism in high-fat diet-fed mice. J Pineal Res 2018; 65:e12524. [PMID: 30230594 DOI: 10.1111/jpi.12524] [Citation(s) in RCA: 307] [Impact Index Per Article: 43.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/17/2018] [Accepted: 09/13/2018] [Indexed: 12/13/2022]
Abstract
Melatonin has been shown to improve lipid metabolism and gut microbiota communities in animals and humans; however, it remains to know whether melatonin prevents obesity through gut microbiota. Here, we found that high-fat diet promoted the lipid accumulation and intestinal microbiota dysbiosis in mice, while oral melatonin supplementation alleviated the lipid accumulation and reversed gut microbiota dysbiosis, including the diversity of intestinal microbiota, relative abundances of Bacteroides and Alistipes, and functional profiling of microbial communities, such as energy metabolism, lipid metabolism, and carbohydrate metabolism. Interestingly, melatonin failed to alleviate the high-fat-induced lipid accumulation in antibiotic-treated mice; however, microbiota transplantation from melatonin-treated mice alleviated high-fat diet-induced lipid metabolic disorders. Notably, short-chain fatty acids were decreased in high-fat diet-fed mice, while melatonin treatment improved the production of acetic acid. Correlation analysis found a marked correlation between production of acetic acid and relative abundances of Bacteroides and Alistipes. Importantly, sodium acetate treatment also alleviated high-fat diet-induced lipid metabolic disorders. Taken together, our results suggest that melatonin improves lipid metabolism in high-fat diet-fed mice, and the potential mechanisms may be associated with reprogramming gut microbiota, especially, Bacteroides and Alistipes-mediated acetic acid production. Future studies are needed for patients with metabolic syndrome to fully understand melatonin's effects on body weight and lipid profiles and the potential mechanism of gut microbiota.
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Affiliation(s)
- Jie Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuying Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hui Han
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shuai Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jing Gao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Gang Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
| | - Xin Wu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
| | - Jinping Deng
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qifang Yu
- Department of Animal science, Hunan Agriculture University, Changsha, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Xingguo Huang
- Department of Animal science, Hunan Agriculture University, Changsha, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Rejun Fang
- Department of Animal science, Hunan Agriculture University, Changsha, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha, China
| | - Tiejun Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX
| | - Dong Zhang
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Congrui Zhu
- College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Guoqiang Zhu
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Wenkai Ren
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Yulong Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Changsha, China
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, China
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Martinez RM, Ivan ALM, Vale DL, Campanini MZ, Ferreira VS, Steffen VS, Vicentini FTMC, Vilela FMP, Fonseca MJV, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Topical emulsion containing pyrrolidine dithiocarbamate: effectiveness against ultraviolet B irradiation-induced injury of hairless mouse skin. J Pharm Pharmacol 2018; 70:1461-1473. [PMID: 30132896 DOI: 10.1111/jphp.12997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 07/21/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To evaluate the effects of a topical emulsion containing pyrrolidine dithiocarbamate (PDTC) (EcPDTC) in skin oxidative stress and inflammation triggered by ultraviolet B (UVB) irradiation (dose of 4.14 J/cm2 ). METHODS Hairless mouse received treatment with 0.5 g of EcPDTC or control emulsion (CTRLE) on the dorsal surface skin 12 h, 6 h and 5 min before and 6 h after the irradiation. Oxidative stress was evaluated by ferric reducing antioxidant power (FRAP), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radical (ABTS) scavenging capacity, reduced glutathione quantitation, catalase activity, superoxide anion production and lipid peroxidation products. Inflammation parameters were as follows: skin oedema, myeloperoxidase activity (neutrophil marker), matrix metalloproteinase-9 activity, collagen fibre damage, mast cell and sunburn cell counts, and cytokine production. KEY FINDINGS Topical treatment with EcPDTC protected from UVB-induced skin injury by maintaining the antioxidant capacity levels similar to non-irradiated control group. Furthermore, EcPDTC inhibited UVB irradiation-induced superoxide anion production, lipid peroxidation and reduced skin inflammation by inhibiting skin oedema, neutrophil recruitment, metalloproteinase-9 activity, collagen fibre damage, mast cell and sunburn cell counts, and cytokine (TNF-α and IL-1β) production. CONCLUSIONS Topical treatment with EcPDTC improves antioxidant systems and inhibits inflammation, protecting the skin from the damaging effects of UVB irradiation.
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Affiliation(s)
- Renata M Martinez
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Ana L M Ivan
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - David L Vale
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Marcela Z Campanini
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Vitor S Ferreira
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Vinicius S Steffen
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Fabiana T M C Vicentini
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Fernanda M P Vilela
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Maria J V Fonseca
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Marcela M Baracat
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Sandra R Georgetti
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Waldiceu A Verri
- Department of Pathology, Biological Science Center, State University of Londrina, Londrina, Brazil
| | - Rúbia Casagrande
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
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Liu R, Tang A, Wang X, Chen X, Zhao L, Xiao Z, Shen S. Inhibition of lncRNA NEAT1 suppresses the inflammatory response in IBD by modulating the intestinal epithelial barrier and by exosome-mediated polarization of macrophages. Int J Mol Med 2018; 42:2903-2913. [PMID: 30132508 DOI: 10.3892/ijmm.2018.3829] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 07/24/2018] [Indexed: 11/06/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a multifactorial inflammatory disease, and increasing evidence has demonstrated that the mechanism of the pathogenesis of IBD is associated with intestinal epithelial barrier injury. Long non‑coding RNAs (lncRNAs) are a class of transcripts >200 nucleotides in length with limited protein‑coding capability. Nuclear paraspeckle assembly transcript 1 (NEAT1) is a recently identified nuclear‑restricted lncRNA, which localizes in subnuclear structures, termed paraspeckles, and is involved in the immune response in a variety of ways. However, the function of NEAT1 in IBD remains to be fully elucidated. In the present study, reverse transcription‑quantitative polymerase chain reaction assays were performed to determine the expression levels of NEAT1 lncRNA in IBD serum samples and tissues. Furthermore, the effect of NEAT1 on the cell permeability of colon cells was investigated via determination of trans‑epithelial electrical resistance as well as performance of western blot and immunofluorescence assays. In addition, dextran sodium sulfate assays were performed to investigate the effect of downregulation of NEAT1 in IBD of mice. The present study detected the expression levels of NEAT1 in IBD cells and animal models to examine the changes in intestinal epithelial cell permeability following inhibition of the expression of NEAT1. In addition, phenotypic transformation was examined following different treatments in epithelial cells and macrophages. The results suggested that the expression of NEAT1 was high in IBD and was involved in the inflammatory response by regulating the intestinal epithelial barrier and through exosome‑mediated polarization of macrophages. The downregulation of NEAT1 suppressed the inflammatory response by modulating the intestinal epithelial barrier and through exosome‑mediated polarization of macrophages in IBD. The results of the present study revealed a potential strategy of targeting NEAT1 for IBD therapy.
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Affiliation(s)
- Rui Liu
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Anliu Tang
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Xiaoyan Wang
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Xiong Chen
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Lian Zhao
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Zhiming Xiao
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Shourong Shen
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
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Banzola I, Mengus C, Wyler S, Hudolin T, Manzella G, Chiarugi A, Boldorini R, Sais G, Schmidli TS, Chiffi G, Bachmann A, Sulser T, Spagnoli GC, Provenzano M. Expression of Indoleamine 2,3-Dioxygenase Induced by IFN-γ and TNF-α as Potential Biomarker of Prostate Cancer Progression. Front Immunol 2018; 9:1051. [PMID: 29896191 PMCID: PMC5986916 DOI: 10.3389/fimmu.2018.01051] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 04/27/2018] [Indexed: 12/22/2022] Open
Abstract
Inflammation has been suggested to play an important role in onset and progression of prostate cancer (PCa). Histological analysis of prostatectomy specimens has revealed focal inflammation in early stage lesions of this malignancy. We addressed the role of inflammatory stimuli in the release of PCa-specific, tumor-derived soluble factors (PCa-TDSFs) already reported to be mediators of PCa morbidity, such as indoleamine 2,3-dioxygenase (IDO) and interleukin (IL)-6. Inflammation-driven production and functions of PCa-TDFSs were tested "in vitro" by stimulating established cell lines (CA-HPV-10 and PC3) with IFN-γ or TNF-α. Expression of genes encoding IDO, IL-6, IFN-γ, TNF-α, and their receptors was investigated in tumor tissues of PCa patients undergoing radical prostatectomy, in comparison with benign prostatic hyperplasia (BPH) specimens. IFN-γ and TNF-α-treatment resulted in the induction of IDO and IL-6 gene expression and release in established cell lines, suggesting that the elicitation of PCa-TDSFs by these cytokines might contribute to progression of cancer into an untreatable phenotype. An analysis based on timing of biochemical recurrence revealed the prognostic value of IDO but not IL-6 gene expression in predicting recurrence-free survival in patients (RFS) with PCa. In addition, a urine-based mRNA biomarker study revealed the diagnostic potential of IDO gene expression in urines of men at risk of PCa development.
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Affiliation(s)
- Irina Banzola
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
- Department of Oncology and Children’s Research Center (CRC), University Children’s Hospital, Zurich, Switzerland
| | - Chantal Mengus
- Department of Biomedicine, University Hospital of Basel, Basel, Switzerland
| | - Stephen Wyler
- Department of Urology, University Hospital of Basel, Basel, Switzerland
| | - Tvrko Hudolin
- Department of Urology, University Hospital of Basel, Basel, Switzerland
| | - Gabriele Manzella
- Department of Oncology and Children’s Research Center (CRC), University Children’s Hospital, Zurich, Switzerland
| | - Alberto Chiarugi
- Department of Preclinical and Clinical Pharmacology, University of Florence, Florence, Italy
| | - Renzo Boldorini
- Department of Health Science, School of Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - Giovanni Sais
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
| | - Tobias S. Schmidli
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
| | - Gabriele Chiffi
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
| | | | - Tullio Sulser
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
| | - Giulio C. Spagnoli
- Department of Biomedicine, University Hospital of Basel, Basel, Switzerland
- CNR Institute of Translational Pharmacology, Rome, Italy
| | - Maurizio Provenzano
- Oncology Research Unit, Department of Urology, University Hospital of Zurich, Zurich, Switzerland
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29
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Yin J, Wu M, Li Y, Ren W, Xiao H, Chen S, Li C, Tan B, Ni H, Xiong X, Zhang Y, Huang X, Fang R, Li T, Yin Y. Toxicity assessment of hydrogen peroxide on Toll-like receptor system, apoptosis, and mitochondrial respiration in piglets and IPEC-J2 cells. Oncotarget 2018; 8:3124-3131. [PMID: 27966452 PMCID: PMC5356869 DOI: 10.18632/oncotarget.13844] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/24/2016] [Indexed: 12/19/2022] Open
Abstract
In this study, expressions of toll-like receptors (TLRs) and apoptosis-related genes in piglets and mitochondrial respiration in intestinal porcine epithelial cells were investigated after hydrogen peroxide (H2O2) exposure. The in vivo results showed that H2O2 influenced intestinal expressions of TLRs and apoptosis related genes. H2O2 treatment (5% and 10%) downregulated uncoupling protein 2 (UCP2) expression in the duodenum (P < 0.05), while low dosage of H2O2 significantly increased UCP2 expression in the jejunum (P < 0.05). In IPEC-J2 cells, H2O2 inhibited cell proliferation (P < 0.05) and caused mitochondrial dysfunction via reducing maximal respiration, spare respiratory, non-mitochondrial respiratory, and ATP production (P < 0.05). However, 50 uM H2O2 significantly enhanced mitochondrial proton leak (P < 0.05). In conclusion, H2O2 affected intestinal TLRs system, apoptosis related genes, and mitochondrial dysfunction in vivo and in vitro models. Meanwhile, low dosage of H2O2 might exhibit a feedback regulatory mechanism against oxidative injury via increasing UCP2 expression and mitochondrial proton leak.
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Affiliation(s)
- Jie Yin
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Miaomiao Wu
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Yuying Li
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Wenkai Ren
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Hao Xiao
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Shuai Chen
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Chunyong Li
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Bie Tan
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Hengjia Ni
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Xia Xiong
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Yuzhe Zhang
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Xingguo Huang
- Department of Animal Science, Hunan Agriculture University, Changsha, Hunan 410125, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan 410128, China
| | - Rejun Fang
- Department of Animal Science, Hunan Agriculture University, Changsha, Hunan 410125, China
| | - Tiejun Li
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan 410128, China
| | - Yulong Yin
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan 410128, China.,College of Animal Science of South China Agricultural University, Guangzhou 510642, China
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Medicherla K, Ketkar A, Sahu BD, Sudhakar G, Sistla R. Rosmarinus officinalis L. extract ameliorates intestinal inflammation through MAPKs/NF-κB signaling in a murine model of acute experimental colitis. Food Funct 2018; 7:3233-43. [PMID: 27349640 DOI: 10.1039/c6fo00244g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We investigated the anti-inflammatory and anti-colitis effects of Rosmarinus officinalis L. extract (RE) by using both in vitro LPS-activated mouse RAW 264.7 macrophages and in vivo dextran sulfate sodium (DSS)-induced experimental murine colitis and suggested the underlying possible mechanisms. Liquid Chromatography-Mass Spectrometry (LC-MS) analysis was performed to identify the major components present in the RE. The clinical signs, biochemistry, immunoblot, ELISA and histology in colon tissues were assessed in order to elucidate the beneficial effect of RE. RE suppressed the LPS-induced pro-inflammatory cytokine production and the expressions of inflammatory proteins in macrophages. Administration of RE (50 and 100 mg kg(-1)) also significantly reduced the severity of DSS-induced murine colitis, as assessed by the clinical symptoms, colon length and histology. RE administration prevented the DSS-induced activation of p38, ERK and JNK MAPKs, attenuated IκBα phosphorylation and subsequent nuclear translocation and DNA binding of NF-κB (p65). RE also suppressed the COX-2 and iNOS expressions, decreased the levels of TNF-α and IL-6 cytokines and the myeloperoxidase activity in the colon tissue. Histological observation revealed that RE administration alleviated mucosal damage and inflammatory cell infiltration induced by DSS in the colon tissue. Hence, RE could be used as a new preventive and therapeutic food ingredient or as a dietary supplement for inflammatory bowel disease.
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Affiliation(s)
- Kanakaraju Medicherla
- Department of Human Genetics, College of Science and Technology, Andhra University, Visakhapatnam 530003, India.
| | - Avanee Ketkar
- Department of Human Genetics, College of Science and Technology, Andhra University, Visakhapatnam 530003, India.
| | - Bidya Dhar Sahu
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500 007, India.
| | - Godi Sudhakar
- Department of Human Genetics, College of Science and Technology, Andhra University, Visakhapatnam 530003, India.
| | - Ramakrishna Sistla
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500 007, India.
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31
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Yang G, Bibi S, Du M, Suzuki T, Zhu MJ. Regulation of the intestinal tight junction by natural polyphenols: A mechanistic perspective. Crit Rev Food Sci Nutr 2017; 57:3830-3839. [PMID: 27008212 DOI: 10.1080/10408398.2016.1152230] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Impairment of the epithelial barrier function is closely linked to the pathogenesis of various gastrointestinal diseases, food allergies, type I diabetes, and other systematic diseases. Plant-derived polyphenols are natural secondary metabolites and exert various physiological benefits, including anti-inflammatory, anti-oxidative, anti-carcinogenic, and anti-aging effects. Recent studies also show the role of plant polyphenols in regulation of the intestinal barrier and prevention of intestinal inflammatory diseases. Here we summarize the regulatory pathways and mediators linking polyphenols to their beneficial effects on tight junction and gut epithelial barrier functions, and provide useful information about using polyphenols as nutraceuticals for intestinal diseases.
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Affiliation(s)
- Guan Yang
- a School of Food Science , Washington State University , Pullman , Washington , USA
| | - Shima Bibi
- a School of Food Science , Washington State University , Pullman , Washington , USA
| | - Min Du
- b Department of Animal Science , Washington State University , Pullman , Washington , USA
| | - Takuya Suzuki
- c Department of Biofunctional Science and Technology , Hiroshima University , Higashi-Hiroshima , Japan
| | - Mei-Jun Zhu
- a School of Food Science , Washington State University , Pullman , Washington , USA
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32
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Mei C, He SS, Yin P, Xu L, Shi YR, Yu XH, Lyu A, Liu FH, Jiang LS. Magnolol pretreatment attenuates heat stress-induced IEC-6 cell injury. J Zhejiang Univ Sci B 2017; 17:413-24. [PMID: 27256675 DOI: 10.1631/jzus.b1500261] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Heat stress (HS) is an important environmental stressor that adversely influences livestock during the summer. The aim of this study was to investigate whether magnolol protects against HS-induced intestinal epithelial cell injury. MATERIALS AND METHODS An intestinal epithelial cell line (IEC-6) was subjected to HS at 42 °C, with and without magnolol pretreatment. Cell injury was detected by monitoring lactate dehydrogenase (LDH) release. MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay was used to assess cell proliferation and viability, including identifying effective concentrations of magnolol. Flow cytometry confirmed G1-phase cell-cycle arrest and its alleviation by magnolol. Active DNA synthesis was measured by incorporation of nucleic acid 5-ethynyl-2'-deoxyuridine (EdU). G1-phase cell-cycle-related gene expression was assessed by real-time reverse transcription polymerase chain reaction (RT-PCR) and levels of G1-phase-related proteins by Western blotting. RESULTS HS induced IEC-6 cell injury and decreased cell viability, as demonstrated by data from LDH and MTS assays, respectively. Based on a number of criteria, IEC-6 cells subjected to HS were arrested in the G1 phase of the cell cycle. Magnolol pretreatment decreased HS-induced cell injury through relief of this cell-cycle arrest. CONCLUSIONS Magnolol pretreatment attenuates HS-induced injury in IEC-6 cells. Magnolol is potentially promising as a protective strategy for HS in livestock.
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Affiliation(s)
- Chen Mei
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Sha-Sha He
- College of Veterinary Medicine, China Agricultural University (CAU), Beijing 100193, China
| | - Peng Yin
- College of Veterinary Medicine, China Agricultural University (CAU), Beijing 100193, China
| | - Lei Xu
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Ya-Ran Shi
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Xiao-Hong Yu
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - An Lyu
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Feng-Hua Liu
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Lin-Shu Jiang
- Beijing Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
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33
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Xiong Y, Wang C, Shi L, Wang L, Zhou Z, Chen D, Wang J, Guo H. Myosin Light Chain Kinase: A Potential Target for Treatment of Inflammatory Diseases. Front Pharmacol 2017; 8:292. [PMID: 28588494 PMCID: PMC5440522 DOI: 10.3389/fphar.2017.00292] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 05/08/2017] [Indexed: 01/30/2023] Open
Abstract
Myosin light chain kinase (MLCK) induces contraction of the perijunctional apical actomyosin ring in response to phosphorylation of the myosin light chain. Abnormal expression of MLCK has been observed in respiratory diseases, pancreatitis, cardiovascular diseases, cancer, and inflammatory bowel disease. The signaling pathways involved in MLCK activation and triggering of endothelial barrier dysfunction are discussed in this review. The pharmacological effects of regulating MLCK expression by inhibitors such as ML-9, ML-7, microbial products, naturally occurring products, and microRNAs are also discussed. The influence of MLCK in inflammatory diseases starts with endothelial barrier dysfunction. The effectiveness of anti-MLCK treatment may depend on alleviation of that primary pathological mechanism. This review summarizes evidence for the potential benefits of anti-MLCK agents in the treatment of inflammatory disease and the importance of avoiding treatment-related side effects, as MLCK is widely expressed in many different tissues.
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Affiliation(s)
- Yongjian Xiong
- Central Laboratory, The First Affiliated Hospital, Dalian Medical UniversityDalian, China
| | - Chenou Wang
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Liqiang Shi
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Liang Wang
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Zijuan Zhou
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Dapeng Chen
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Jingyu Wang
- Laboratory Animal Center, Dalian Medical UniversityDalian, China
| | - Huishu Guo
- Central Laboratory, The First Affiliated Hospital, Dalian Medical UniversityDalian, China
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Wang B, Wu C. Dietary soy isoflavones alleviate dextran sulfate sodium-induced inflammation and oxidative stress in mice. Exp Ther Med 2017; 14:276-282. [PMID: 28672925 PMCID: PMC5488499 DOI: 10.3892/etm.2017.4469] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 02/24/2017] [Indexed: 01/10/2023] Open
Abstract
It has been hypothesized that soy isoflavones exhibit anti-oxidative and anti-inflammatory functions, however, the effects of soy isoflavones on inflammatory bowel diseases remain unknown. Therefore, the present study aimed to investigate the effect and underlying mechanism of dietary soy isoflavones on dextran sulfate sodium (DSS)-induced colitis. Mice were administered DSS and soy isoflavones, and histomorphometry, oxidative stress, inflammation and intestinal tight junctions were determined. The current study demonstrated that dietary soy isoflavones alleviated DSS-induced growth suppression, colonic inflammatory response, oxidative stress and colonic barrier dysfunction. DSS treatment was indicated to activate Toll-like receptor 4 (TRL4) and myeloid differentiation protein 88 (MyD88) in mice, whereas dietary soy isoflavones inhibited Myd88 expression in DSS-challenged mice. In conclusion, dietary soy isoflavones alleviate DSS-induced inflammation in mice, which may be associated with enhancing antioxidant function and inhibiting the TLR4/MyD88 signal.
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Affiliation(s)
- Bin Wang
- Department of Food and Nutritional Engineering, Jiangsu Food and Pharmaceutical Science College, Huaian, Jiangsu 223005, P.R. China
| | - Cunbing Wu
- Department of Food Engineering, Jiangsu Polytechnic of Finance and Economics, Huaian, Jiangsu 223005, P.R. China
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35
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Chen T, Hu S, Zhang H, Guan Q, Yang Y, Wang X. Anti-inflammatory effects of Dioscorea alata L. anthocyanins in a TNBS-induced colitis model. Food Funct 2017; 8:659-669. [PMID: 28121001 DOI: 10.1039/c6fo01273f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The purple yam, Dioscorea alata L., is an important source of starch, vitamins and polyphenols. Five different pigments from the purple tubers of this plant were separated by high-performance liquid chromatography-mass spectrometry, and the anthocyanin fraction (DACN) was collected. The anti-inflammatory effects of DACNs were investigated at different concentrations and compared with the standard colitis treatment, 5-aminosalicylic acid, in a trinitrobenzenesulfonic acid (TNBS)-induced colitis mouse model. Macro- and microscopic parameters including body weight change, disease activity index (DAI) and intestinal histology were used for the determination of the anti-inflammatory effects of DACNs. The gene expression levels of tight junction-related proteins in the intestine, myeloperoxidase activity, inducible nitric oxide synthase activity in colonic tissues and pro-inflammatory cytokine production in serum were also measured to elucidate the mechanism of DACN action. Eighty micrograms of DACNs per kilogram of body weight produced potent anti-inflammatory effects in the mouse model of inflammatory bowel disease (IBD), as shown by the DAI (2.78 ± 0.38 vs. 0.44 ± 0.51). Therefore, DACNs may be applied as a potential food supplement in IBD therapy.
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Affiliation(s)
- Tao Chen
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China.
| | - Shihui Hu
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China.
| | - Haiwen Zhang
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China. and Key Laboratory of Tropical Biological Resources of Ministry of Education, Haikou 570228, China
| | - Qingfeng Guan
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China.
| | - Yuhui Yang
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China.
| | - Xuemei Wang
- Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, China. and Key Laboratory of Tropical Biological Resources of Ministry of Education, Haikou 570228, China
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36
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Bai Y, Zhang Y, Hua J, Yang X, Zhang X, Duan M, Zhu X, Huang W, Chao J, Zhou R, Hu G, Yao H. Silencing microRNA-143 protects the integrity of the blood-brain barrier: implications for methamphetamine abuse. Sci Rep 2016; 6:35642. [PMID: 27767041 PMCID: PMC5073292 DOI: 10.1038/srep35642] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 10/03/2016] [Indexed: 12/31/2022] Open
Abstract
MicroRNA-143 (miR-143) plays a critical role in various cellular processes; however, the role of miR-143 in the maintenance of blood-brain barrier (BBB) integrity remains poorly defined. Silencing miR-143 in a genetic animal model or via an anti-miR-143 lentivirus prevented the BBB damage induced by methamphetamine. miR-143, which targets p53 unregulated modulator of apoptosis (PUMA), increased the permeability of human brain endothelial cells and concomitantly decreased the expression of tight junction proteins (TJPs). Silencing miR-143 increased the expression of TJPs and protected the BBB integrity against the effects of methamphetamine treatment. PUMA overexpression increased the TJP expression through a mechanism that involved the NF-κB and p53 transcription factor pathways. Mechanistically, methamphetamine mediated up-regulation of miR-143 via sigma-1 receptor with sequential activation of the mitogen-activated protein kinase (MAPK) and phosphatidylinositol-3' kinase (PI3K)/Akt and STAT3 pathways. These results indicated that silencing miR-143 could provide a novel therapeutic strategy for BBB damage-related vascular dysfunction.
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Affiliation(s)
- Ying Bai
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Yuan Zhang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Jun Hua
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu, China
| | - Xiangyu Yang
- Institute of Life Sciences, Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu, China
| | - Xiaotian Zhang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Ming Duan
- Virosis Laboratory, Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, Jilin University, 5333 Xi An Road, Changchun, 130062, China
| | - Xinjian Zhu
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Wenhui Huang
- Department of Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, Homburg D-66421, Germany
| | - Jie Chao
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Rongbin Zhou
- Institute of Immunology and the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, China
| | - Gang Hu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu, China
| | - Honghong Yao
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Institute of Life Sciences, Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu, China
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38
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Yang Y, Zhang J, Chen X, Wu T, Xu X, Cao G, Li H, Li Y. UII/GPR14 is involved in NF-κB-mediated colonic inflammation in vivo and in vitro. Oncol Rep 2016; 36:2800-2806. [PMID: 27600191 DOI: 10.3892/or.2016.5069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/04/2016] [Indexed: 12/12/2022] Open
Abstract
The present study was conducted to investigate the molecular mechanism of urotensin II (UII) and its receptor, G protein‑coupled receptor 14 (GPR14), in colonic inflammation. Urantide, a special antagonist of GPR14, and GPR14-siRNA were used to inhibit GPR14 signaling in dextran sulfate sodium (DSS)‑induced inflammation in mice and Caco-2 cells. The results showed that urantide alleviated rectal bleeding, histological injury and production of interleukin (IL)-17 and tumor necrosis factor‑α (TNF‑α) caused by DSS in mice. GPR14-siRNA transfection subsequent with GPR14 inhibition reduced DSS-induced interferon-γ (IFN)-γ production in Caco-2 cells. Meanwhile, both in vivo and in vitro data demonstrated that inhibition of UII/GPR14 alleviated nuclear factor-κB (NF-κB) activation caused by DSS. In conclusion, UII/GPR14 signaling was involved in the DSS-induced colonic inflammation and its inhibition may serve as a potential therapeutic target, which may be associated with the NF-κB signaling pathway.
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Affiliation(s)
- Yi Yang
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jinpei Zhang
- Department of Encephalopathy, Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
| | - Xi Chen
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Tao Wu
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xin Xu
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Gang Cao
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Hua Li
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yiming Li
- Department of General Surgery, Second Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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