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Heidari P, Haj-Mirzaian A, Prabhu S, Ataeinia B, Esfahani SA, Mahmood U. Granzyme B PET Imaging for Assessment of Disease Activity in Inflammatory Bowel Disease. J Nucl Med 2024; 65:1137-1143. [PMID: 38754959 PMCID: PMC11218731 DOI: 10.2967/jnumed.123.267344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 05/18/2024] Open
Abstract
Developing a noninvasive imaging method to detect immune system activation with a high temporal resolution is key to improving inflammatory bowel disease (IBD) management. In this study, granzyme B (GZMB), typically released from cytotoxic T and natural killer cells, was targeted using PET with 68Ga-NOTA-GZP (where GZP is β-Ala-Gly-Gly-Ile-Glu-Phe-Asp-CHO) to detect early intestinal inflammation in murine models of colitis. Methods: Bioinformatic analysis was used to assess the potential of GZMB as a biomarker for detecting IBD and predicting response to treatment. Human active and quiescent Crohn disease and ulcerative colitis tissues were stained for GZMB. We used IL-10-/- mice treated with dextran sulfate sodium (DSS) as an IBD model, wild-type C57BL/6J mice as a control, and anti-tumor necrosis factor as therapy. We used a murine GZMB-binding peptide conjugated to a NOTA chelator (NOTA-GZP) labeled with 68Ga as the PET tracer. PET imaging was conducted at 1, 3, and 4 wk after colitis induction to evaluate temporal changes. Results: Bioinformatic analysis showed that GZMB gene expression is significantly upregulated in human ulcerative colitis and Crohn disease compared with the noninflamed bowel by 2.98-fold and 1.92-fold, respectively; its expression is lower by 2.16-fold in treatment responders than in nonresponders. Immunofluorescence staining of human tissues demonstrated a significantly higher GZMB in patients with active than with quiescent IBD (P = 0.032).68Ga-NOTA-GZP PET imaging showed significantly increased bowel uptake in IL-10-/- mice with DSS-induced colitis compared with vehicle-treated IL-10-/- mice (SUVmean, 0.75 vs. 0.24; P < 0.001) and both vehicle- and DSS-treated wild-type mice (SUVmean, 0.26 and 0.37; P < 0.001). In the IL-10-/- DSS-induced colitis model, the bowel PET probe uptake decreased in response to treatment with tumor necrosis factor-α (SUVmean, 0.32; P < 0.001). There was a 4-fold increase in colonic uptake of 68Ga-NOTA-GZP in the colitis model compared with the control 1 wk after colitis induction. The uptake gradually decreased to approximately 2-fold by 4 wk after IBD induction; however, the inflamed bowel uptake remained significantly higher than control at all time points (week 4 SUVmean, 0.23 vs. 0.08; P = 0.001). Conclusion: GZMB is a promising biomarker to detect active IBD and predict response to treatment. This study provides compelling evidence to translate GZMB PET for imaging IBD activity in clinical settings.
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Affiliation(s)
- Pedram Heidari
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Arvin Haj-Mirzaian
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Suma Prabhu
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Bahar Ataeinia
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Shadi A Esfahani
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Umar Mahmood
- Center for Precision Imaging and Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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D'Ascenzo F, Bruno F, Iannaccone M, Testa G, De Filippo O, Giannino G, Caviglia GP, Bernstein CN, De Ferrari GM, Bugianesi E, Armandi A, Ribaldone DG. Patients with inflammatory bowel disease are at increased risk of atherothrombotic disease: A systematic review with meta-analysis. Int J Cardiol 2023; 378:96-104. [PMID: 36863421 DOI: 10.1016/j.ijcard.2023.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/15/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023]
Abstract
AIMS Patients with inflammatory bowel disease (IBD) are known to be at increased risk for venous thrombosis, while their risk for arterial ischemic events is debated. The purpose of this study was to conduct a systematic review of the published literature on the risk of myocardial infarction (MI) in IBD patients and to identify any potential risk factors. METHODS The present study was performed according to PRISMA, with a systematic search on PubMed, Cochrane, and Google Scholar. Risk of MI was the primary end point, while all causes of death and stroke were secondary endpoints. Both univariate and multivariate pooled analysis were performed. RESULTS An overall population of 515,455 controls and 77,140 persons with IBD (26,852, 34.8% Crohn's disease, CD and 50,288, 65.2% ulcerative colitis, UC) was included. Mean age was similar across controls and IBD. Persons with CD and UC had lower rates of hypertension (14.5% vs. 14.6% vs. 25%), diabetes (2.9% vs. 5.2% vs. 9.2%) and dyslipidaemia (3.3% vs. 6.5% vs. 16.1%) compared to controls. Smoking did not significantly differ (17% vs. 17.5% vs. 10.6%). Pooled results of multivariate adjustment showed that, after a 5 years-follow-up, both CD and UC were at increased risk of MI (respectively HR 1.36 [1.12-1.64] and HR 1.24 [1.05-1.46]), of death (HR 1.55 [1.27-1.90] and HR 1.29 [1.01-1.64]), and of other CV disease as stroke (HR 1.22 [1.01-1.49] and HR 1.09 [1.03-1.15], all 95% CI). CONCLUSIONS Persons with IBD are at increased risk of MI, despite a lower prevalence of the classic risk factors for MI (hypertension, diabetes, dyslipidemia).
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Affiliation(s)
- Fabrizio D'Ascenzo
- Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza Hospital and University of Turin, Italy.
| | - Francesco Bruno
- Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza Hospital and University of Turin, Italy
| | - Mario Iannaccone
- Cardiology Department, San Giovanni Bosco Hospital, 10154 Turin, Italy
| | - Giulia Testa
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Ovidio De Filippo
- Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza Hospital and University of Turin, Italy
| | - Giuseppe Giannino
- Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza Hospital and University of Turin, Italy
| | | | | | - Gaetano Maria De Ferrari
- Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza Hospital and University of Turin, Italy
| | | | - Angelo Armandi
- Department of Medical Sciences, University of Turin, Turin, Italy
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Gao M, Yang C, Wu C, Chen Y, Zhuang H, Wang J, Cao Z. Hydrogel-metal-organic-framework hybrids mediated efficient oral delivery of siRNA for the treatment of ulcerative colitis. J Nanobiotechnology 2022; 20:404. [PMID: 36064365 PMCID: PMC9446571 DOI: 10.1186/s12951-022-01603-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/11/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a major type of inflammatory bowel disease (IBD), which could induce bloody stool, diarrhea, colon atrophy and eventually lead to colorectal cancer. The conventional daily oral administration of drugs only relieve the inflammatory response of colon in the short term, Biological agents such as antibody drugs has proven its efficiency in inhibiting colitis, while the low drug bioavailability means that large doses of antibodies are required, ultimately causing systemic toxicity. Small interfering RNA (siRNA) has significant advantages over antibody drugs in terms of safety and efficacy, and it have been widely applied as potential candidates for a variety of inflammation-related diseases. However, oral delivery of siRNA fails to overcome the degradation of the gastrointestinal environment to produce a significant therapeutic effect in ulcerative colitis. Herein, we design the hybrid delivery system that the siRNA loaded MOF encapsulated in the sodium alginate particles to overcome the barriers in the oral process. RESULTS The hybrid delivery system (SA@MOF-siRNATNFα) was successfully constructed, and it could not only survive the low pH environment in the stomach and small intestine, but also taken up more by inflammatory macrophages, as well as released much more MOF-siRNATNFα. Moreover, SA@MOF-siRNATNFα tended to enriched and infiltrated into local colon tissues. As a result, SA@MOF-siRNATNFα significantly reduced the progression of colitis, of which the treated mice did not experience significant weight loss, bloody stools and diarrhea. CONCLUSION We confirmed that the formulation of hydrogel-metal-organic framework hybrids could improve the protection of incorporated payload in the gastric and early small intestine, enhancing the delivery of MOF-siRNA to colon.
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Affiliation(s)
- Meng Gao
- Department of Gastroenterology, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, 230011, China
| | - Chen Yang
- School of Biopharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Chenghu Wu
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, Zhejiang, China
| | - Yue Chen
- School of Clinical Medicine, Anhui Medical University, Hefei, 230000, China
| | - Hongqin Zhuang
- School of Life Sciences, Nanjing University, Nanjing, 210023, China.
| | - Jilong Wang
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, Zhejiang, China.
| | - Zhiting Cao
- School of Biopharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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Zhao J, Ruan J, Lv G, Shan Q, Fan Z, Wang H, Du Y, Ling L. Cell membrane-based biomimetic nanosystems for advanced drug delivery in cancer therapy: A comprehensive review. Colloids Surf B Biointerfaces 2022; 215:112503. [PMID: 35429736 DOI: 10.1016/j.colsurfb.2022.112503] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/08/2022] [Accepted: 04/08/2022] [Indexed: 12/30/2022]
Abstract
Natural types of cells display distinct characteristics with homotypic targeting and extended circulation in the blood, which are worthy of being explored as promising drug delivery systems (DDSs) for cancer therapy. To enhance their delivery efficiency, these cells can be combined with therapeutic agents and artificial nanocarriers to construct the next generation of DDSs in the form of biomimetic nanomedicines. In this review, we present the recent advances in cell membrane-based DDSs (CDDSs) and their applications for efficient cancer therapy. Different sources of cell membranes are discussed, mainly including red blood cells (RBC), leukocytes, cancer cells, stem cells and hybrid cells. Moreover, the extraction methods used for obtaining such cells and the mechanism contributing to the functional action of these biomimetic CDDSs are explained. Finally, a future perspective is proposed to highlight the limitations of CDDSs and the possible resolutions toward clinical transformation of currently developed biomimetic chemotherapies.
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Affiliation(s)
- Jianing Zhao
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China
| | - Jian Ruan
- Yantai Center for Food and Drug Control, Yantai 264005, China
| | - Guangyao Lv
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China
| | - Qi Shan
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China
| | - Zhiping Fan
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Hongbo Wang
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China.
| | - Yuan Du
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China.
| | - Longbing Ling
- Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education of China), School of Pharmacy, Yantai University, Yantai 264005, China.
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Zou Q, Feng J, Li T, Cheng G, Wang W, Rao G, He H, Li Y. Antioxidation and anti-inflammatory actions of the extract of Nitraria Tangutorum Bobr. fruits reduce the severity of ulcerative colitis in a dextran sulphate sodium-induced mice model. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Debourdeau E, Charmard C, Carriere I, Plat J, Villain M, Boivineau L, Altwegg R, Daien V. Retinal Microcirculation Changes in Crohn’s Disease Patients under Biologics, a Potential Biomarker of Severity: A Pilot Study. J Pers Med 2022; 12:jpm12020230. [PMID: 35207718 PMCID: PMC8878992 DOI: 10.3390/jpm12020230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/02/2022] [Accepted: 02/02/2022] [Indexed: 02/04/2023] Open
Abstract
Crohn’s disease (CD) is associated with increased cardiovascular risk and the retinal microcirculation is a reflection of the systemic microcirculation. Is the retinal microcirculation altered in relation to the severity of Crohn’s disease? This cross-sectional case-controlled study was conducted in a university hospital center from November 2020 to February 2021. We prospectively included patients with moderate (biologic therapy) or severe (biologic therapy + peri-anal disease and/or digestive resection) CD and age- and sex-matched controls. Individuals with diabetes, renal disease, cardiovascular disease, ophthalmological history or poor quality images were excluded. All participants underwent OCT angiography (OCT-A) imaging (Optovue, Fremont, CA). Analysis of covariance was used. 74 CD patients (33 moderate, 41 severe) and 74 controls (66 (44.6%) men; mean (SD) age 44 (14) years) were included. Compared with the controls, the severe CD patients showed a significantly reduced mean foveal avascular zone area (p = 0.001), superficial macular capillary plexus vessel density (p = 0.009) and parafoveal thickness (p < 0.001), with no difference in mean superficial capillary flow index (p = 0.06) or deep macular capillary plexus vessel density (p = 0.67). The mean foveal avascular zone was significantly lower in the severe than the moderate CD patients (p = 0.010). OCT-A can detect alterations in retinal microcirculation in patients with severe versus moderate CD and versus age- and sex-matched controls.
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Affiliation(s)
- Eloi Debourdeau
- Department of Ophthalmology, Gui de Chauliac Hospital, F-34000 Montpellier, France; (C.C.); (J.P.); (M.V.)
- Institute for Neurosciences of Montpellier INM, University Montpellier, INSERM, F-34091 Montpellier, France;
- Correspondence: (E.D.); (V.D.); Tel.: +33-648-263-565 (E.D.); +33-673-055-877 (V.D.)
| | - Chloé Charmard
- Department of Ophthalmology, Gui de Chauliac Hospital, F-34000 Montpellier, France; (C.C.); (J.P.); (M.V.)
- Institute for Neurosciences of Montpellier INM, University Montpellier, INSERM, F-34091 Montpellier, France;
| | - Isabelle Carriere
- Institute for Neurosciences of Montpellier INM, University Montpellier, INSERM, F-34091 Montpellier, France;
| | - Julien Plat
- Department of Ophthalmology, Gui de Chauliac Hospital, F-34000 Montpellier, France; (C.C.); (J.P.); (M.V.)
| | - Max Villain
- Department of Ophthalmology, Gui de Chauliac Hospital, F-34000 Montpellier, France; (C.C.); (J.P.); (M.V.)
| | - Lucile Boivineau
- Department of Gastroenterology and Hepatology, Saint-Eloi Hospital, F-34000 Montpellier, France; (L.B.); (R.A.)
| | - Romain Altwegg
- Department of Gastroenterology and Hepatology, Saint-Eloi Hospital, F-34000 Montpellier, France; (L.B.); (R.A.)
| | - Vincent Daien
- Department of Ophthalmology, Gui de Chauliac Hospital, F-34000 Montpellier, France; (C.C.); (J.P.); (M.V.)
- Institute for Neurosciences of Montpellier INM, University Montpellier, INSERM, F-34091 Montpellier, France;
- The Save Sight Institute, Sydney Medical School, The University of Sydney, Sydney, NSW 2000, Australia
- Correspondence: (E.D.); (V.D.); Tel.: +33-648-263-565 (E.D.); +33-673-055-877 (V.D.)
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7
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Arifa RDN, Brito CB, de Paula TP, Lima RL, Menezes‐Garcia Z, Cassini‐Vieira P, Vilas Boas FA, Queiroz‐Junior CM, da Silva JM, da Silva TA, Barcelos LS, Fagundes CT, Teixeira MM, Souza DG. Eosinophil plays a crucial role in intestinal mucositis induced by antineoplastic chemotherapy. Immunology 2021; 165:355-368. [DOI: 10.1111/imm.13442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 12/01/2021] [Accepted: 12/15/2021] [Indexed: 12/01/2022] Open
Affiliation(s)
- Raquel D N Arifa
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
| | - Camila B Brito
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
| | - Talles P de Paula
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
| | - Renata L Lima
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
| | | | | | | | - Celso M Queiroz‐Junior
- Department of Oral Pathology and Surgery Faculty of Dentistry Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | - Janine M da Silva
- Department of Oral Pathology and Surgery Faculty of Dentistry Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | - Tarcília A da Silva
- Department of Oral Pathology and Surgery Faculty of Dentistry Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | | | - Caio T. Fagundes
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
- Center for Drug Research and Development of Pharmaceuticals
| | - Mauro M Teixeira
- Center for Drug Research and Development of Pharmaceuticals
- Department of Biochemistry and Immunology Institute of Biological Sciences
| | - Daniele G. Souza
- Laboratory of Microorganism‐Host Interaction Department of Microbiology
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Ai L, Ren Y, Zhu M, Lu S, Qian Y, Chen Z, Xu A. Synbindin restrains proinflammatory macrophage activation against microbiota and mucosal inflammation during colitis. Gut 2021; 70:2261-2272. [PMID: 33441378 DOI: 10.1136/gutjnl-2020-321094] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 12/27/2020] [Accepted: 12/29/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE As a canonical membrane tethering factor, the function of synbindin has been expanding and indicated in immune response. Here, we investigated the role of synbindin in the regulation of toll-like receptor 4 (TLR4) signalling and macrophage response to microbiota during colitis. DESIGN Three distinct mouse models allowing global, myeloid-specific or intestinal epithelial cell-specific synbindin heterozygous deletion were constructed and applied to reveal the function of synbindin during dextran sodium sulfate (DSS) colitis. Effects of synbindin on TLR4 signalling and macrophage activation in response to bacterial lipopolysaccharide (LPS) or Fusobacterium nucleatum were evaluated. The colocalisation and interaction between synbindin and Rab7b were determined by immunofluorescence and coimmunoprecipitation. Synbindin expression in circulating monocytes and intestinal mucosal macrophages of patients with active IBD was detected. RESULTS Global synbindin haploinsufficiency greatly exacerbated DSS-induced intestinal inflammation. The increased susceptibility to DSS was abolished by gut microbiota depletion, while phenocopied by specific synbindin heterozygous deletion in myeloid cells rather than intestinal epithelial cells. Profoundly aberrant proinflammatory gene signatures and excessive TLR4 signalling were observed in macrophages with synbindin interference in response to bacterial LPS or Fusobacterium nucleatum. Synbindin was significantly increased in intestinal mucosal macrophages and circulating monocytes from both mice with DSS colitis and patients with active IBD. Interleukin 23 and granulocyte-macrophage colony-stimulating factor were identified to induce synbindin expression. Mechanistic characterisation indicated that synbindin colocalised and directly interacted with Rab7b, which coordinated the endosomal degradation pathway of TLR4 for signalling termination. CONCLUSION Synbindin was a key regulator of TLR4 signalling and restrained the proinflammatory macrophage activation against microbiota during colitis.
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Affiliation(s)
- Luoyan Ai
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yimeng Ren
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mingming Zhu
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shiyuan Lu
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Qian
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhaofei Chen
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Antao Xu
- Department of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Xiang XW, Wang R, Yao LW, Zhou YF, Sun PL, Zheng B, Chen YF. Anti-Inflammatory Effects of Mytilus coruscus Polysaccharide on RAW264.7 Cells and DSS-Induced Colitis in Mice. Mar Drugs 2021; 19:md19080468. [PMID: 34436307 PMCID: PMC8400803 DOI: 10.3390/md19080468] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
Considerable literature has been published on polysaccharides, which play a critical role in regulating the pathogenesis of inflammation and immunity. In this essay, the anti-inflammatory effect of Mytilus coruscus polysaccharide (MP) on lipopolysaccharide-stimulated RAW264.7 cells and a dextran sulfate sodium (DSS)-induced ulcerative colitis model in mice was investigated. The results showed that MP effectively promoted the proliferation of RAW264.7 cells, ameliorated the excessive production of inflammatory cytokines (TNF-α, IL-6, and IL-10), and inhibited the activation of the NF-κB signaling pathway. For DSS-induced colitis in mice, MP can improve the clinical symptoms of colitis, inhibit the weight loss of mice, reduce the disease activity index, and have a positive effect on the shortening of the colon caused by DSS, meliorating intestinal barrier integrity and lowering inflammatory cytokines in serum. Moreover, MP makes a notable contribution to the richness and diversity of the intestinal microbial community, and also regulates the structural composition of the intestinal flora. Specifically, mice treated with MP showed a repaired Firmicutes/Bacteroidetes ratio and an increased abundance of some probiotics like Anaerotruncus, Lactobacillus, Desulfovibrio, Alistipe, Odoribacter, and Enterorhabdus in colon. These data suggest that the MP could be a promising dietary candidate for enhancing immunity and protecting against ulcerative colitis.
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Affiliation(s)
- Xing-Wei Xiang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; (X.-W.X.); (R.W.); (P.-L.S.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
| | - Rui Wang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; (X.-W.X.); (R.W.); (P.-L.S.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
| | - Li-Wen Yao
- Food and Pharmacy College, Zhejiang Ocean University, Zhoushan 316000, China; (L.-W.Y.); (B.Z.)
| | - Yu-Fang Zhou
- Zhejiang Marine Development Research Institute, Zhoushan 316000, China
- Correspondence: (Y.-F.Z.); (Y.-F.C.); Tel.: +86-151-0580-6692 (Y.-F.Z.); +86-133-7257-2058 (Y.-F.C.)
| | - Pei-Long Sun
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; (X.-W.X.); (R.W.); (P.-L.S.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
| | - Bin Zheng
- Food and Pharmacy College, Zhejiang Ocean University, Zhoushan 316000, China; (L.-W.Y.); (B.Z.)
| | - Yu-Feng Chen
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; (X.-W.X.); (R.W.); (P.-L.S.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
- Correspondence: (Y.-F.Z.); (Y.-F.C.); Tel.: +86-151-0580-6692 (Y.-F.Z.); +86-133-7257-2058 (Y.-F.C.)
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In vivo evidence: Repression of mucosal immune responses in mice with colon cancer following sustained administration of Streptococcus thermophiles. Saudi J Biol Sci 2021; 28:4751-4761. [PMID: 34354463 PMCID: PMC8324971 DOI: 10.1016/j.sjbs.2021.04.090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 12/20/2022] Open
Abstract
Probiotics have attracted considerable attention because of their ability to ameliorate disease and prevent cancer. In this study, we examined the immunomodulatory effects of a Streptococcus thermophilus probiotic on the intestinal mucosa azoxymethane-induced colon cancer. Sixty female mice were divided into four groups (n = 15 each). One group of untreated mice was used as a control (C group). Another mouse group was injected with azoxymethane once weekly for 8 weeks to induce colon cancer (CC group). Finally, two groups of mice were continuously treated twice per week from week 2 to 16 with either the Lactobacillus plantarum (Lac CC group) or S. thermophilus (Strep CC group) bacterial strain pre-and post-treatment as performed for the CC group. Remarkably, Tlr2, Ifng, Il4, Il13, Il10, and Tp53 transcription were significantly downregulated in the Strep CC intestinal mucosa group. Additionally, IL2 expression was decreased significantly in the Strep CC mouse serum, whereas TNFα was remarkably elevated compared to that in the CC, Lac CC, and untreated groups. This study suggested that Streptococcus thermophilus did not interrupt or hinder colon cancer development in mice when administered as a prophylactic.
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Magalhães DDA, Batista JA, Sousa SG, Ferreira JDS, da Rocha Rodrigues L, Pereira CMC, do Nascimento Lima JV, de Albuquerque IF, Bezerra NLSD, Monteiro CEDS, Franco AX, da Costa Filho HB, Ferreira FCS, Havt A, Di Lenardo D, Vasconcelos DFP, de Oliveira JS, Soares PMG, Barbosa ALDR. McN-A-343, a muscarinic agonist, reduces inflammation and oxidative stress in an experimental model of ulcerative colitis. Life Sci 2021; 272:119194. [PMID: 33609541 DOI: 10.1016/j.lfs.2021.119194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/24/2021] [Accepted: 02/01/2021] [Indexed: 11/30/2022]
Abstract
AIM The aim of the present study was to investigate the anti-inflammatory response mediated of the M1 muscarinic acetylcholine receptor (mAChR) during experimental colitis. MATERIAL AND METHODS After the induction of 6% acetic acid colitis, mice were treated with McN-A-343 0.5, 1.0, and 1.5 mg/kg or dexamethasone (DEXA, 2.0 mg/kg) or pirenzepine (PIR, 10 mg/kg; M1 mAChR antagonist). Colonic inflammation was assessed by macroscopic and microscopic lesion scores, colonic wet weight, myeloperoxidase (MPO) activity, interleukin-1 beta (IL1-β) levels and tumor necrosis factor alpha (TNF-α), glutathione (GSH), malondialdehyde (MDA) and nitrate and nitrite (NO3/NO2), mRNA expression of IKKα, nuclear factor kappa beta (NF-kB) and cyclooxygenase-2 (COX-2), as well protein expression of NF-kB and COX-2. RESULTS Treatment with McN-A-343 at a concentration of 1.5 mg/kg showed a significant reduction in intestinal damage as well as a decrease in wet weight, MPO activity, pro-inflammatory cytokine concentration, markers of oxidative stress and expression of inflammatory mediators. The action of the M1 agonist by the administration of pirenzepine, which promoted the blocking of the mAChR M1-mediated anti-inflammatory response, has also been proven. CONCLUSION The results suggest that peripheral colonic M1 mAChR is involved in reversing the pro-inflammatory effect of experimentally induced colitis, which may represent a promising therapeutic alternative for patients with ulcerative colitis.
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Affiliation(s)
- Diva de Aguiar Magalhães
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Jalles Arruda Batista
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Stefany Guimarães Sousa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Jayro Dos Santos Ferreira
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil
| | | | | | | | | | | | | | - Alvaro Xavier Franco
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | | | | | - Alexandre Havt
- Laboratory of Molecular Toxinology, LTM, Federal University of Ceará, Fortaleza, CE, Brazil
| | - David Di Lenardo
- Laboratory of Analysis and Histological Processing, LAPHIS, Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Daniel Fernando Pereira Vasconcelos
- The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil; Laboratory of Analysis and Histological Processing, LAPHIS, Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Jefferson Soares de Oliveira
- The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil; Biochemistry Laboratory of Laticifers Plants (LABPL), Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Pedro Marcos Gomes Soares
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | - André Luiz Dos Reis Barbosa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil.
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Li Z, Qiao L, Yun X, Du F, Xing S, Yang M. Increased risk of ischemic heart disease and diabetes in inflammatory bowel disease. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2020; 59:117-124. [PMID: 33233007 DOI: 10.1055/a-1283-6966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Previous studies showed inconsistent results regarding associations between inflammatory bowel disease (IBD) and risk of ischemic heart disease (IHD) and diabetes. The present study aimed to make a meta-analysis to assess the risk of IHD and diabetes in IBD. METHODS We searched for articles published before February 2020 in the databases as follows: PubMed, Web of Science, Medline, EMBASE, and Google Scholar. We computed odds ratio (OR) or relative risk (RR) and 95 % confidence intervals (CI) regarding the association between IBD and risk of IHD or diabetes by using STATA 13.0 software. RESULTS The present meta-analysis showed that IBD was associated with higher risk of IHD (OR/RR = 1.26, 95 % CI 1.20 to 1.32, I2 = 88.3 %, p < 0.0001). Additionally, both ulcerative colitis (UC) and Crohn's disease (CD) were associated with higher risk of IHD (UC: OR/RR = 1.19, 95 % CI 1.13 to 1.26, I2 = 65.6 %, p = 0.001; CD: OR/RR = 1.33, 95 % CI 1.17 to 1.51, I2 = 89.5 %, p < 0.0001). The study showed that IBD was associated with elevated risk of diabetes (OR/RR = 1.26, 95 % CI 1.03 to 1.53, I2 = 92.1 %, I2 = 92.1 %, p < 0.0001). Additionally, both UC and CD were associated with higher risk of diabetes (UC: OR/RR = 1.33, 95 % CI 1.03 to 1.71, I2 = 93.8 %, p < 0.0001; CD: OR/RR = 1.39, 95 % CI 1.10 to 1.76, I2 = 76.7 %, p = 0.002). CONCLUSION In conclusion, patients with IBD are at increased risk of IHD and diabetes. Thus, regular monitoring of biomarkers of IHD and blood glucose levels should be considered for the early detection of IHD and diabetes in IBD patients.
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Affiliation(s)
- Zhihui Li
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
| | - Lili Qiao
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
| | - Xiaojing Yun
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
| | - Fangjuan Du
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
| | - Shilei Xing
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
| | - Maowu Yang
- Department of Gastroenterology, The Second People's Hospital of Liaocheng, the Second Hospital of Liaocheng affiliated to Shandong First Medical University, Liaocheng, Shandong Province, China
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Jagannath B, Lin KC, Pali M, Sankhala D, Muthukumar S, Prasad S. A Sweat-based Wearable Enabling Technology for Real-time Monitoring of IL-1β and CRP as Potential Markers for Inflammatory Bowel Disease. Inflamm Bowel Dis 2020; 26:1533-1542. [PMID: 32720974 DOI: 10.1093/ibd/izaa191] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND More than 1.2 million people in the United States are affected by inflammatory bowel disease (IBD). Inflammatory bowel disease has a natural course characterized by alternating periods of remission and relapse. Currently, disease flares are unpredictable as they occur in a random way. Further, current testing methods and practices lack the ability for real-time tracking of flares. There exists no technology that can be utilized for continuous monitoring of biomarkers, as most of these rely on samples such as blood, feces, and testing methods by which continuous monitoring is not feasible. Cytokines play a key role in IBD; the development, recurrence, and exacerbation of the inflammatory process are orchestrated by their levels in time and space. Cytokines are also present in sweat. We hypothesize that demonstrating real-time continuous monitoring of interleukin-1β (IL-1β) and C-reactive protein (CRP) may help create an enabling technology to track inflammation in IBD patients and identify flare-ups and assess efficacy of therapy. METHODS A multiplexed SWEATSENSER was used for noninvasive continuous monitoring of interleukin-1β and C-reactive protein in human eccrine sweat. Impedance spectroscopy was used to measure the sensor response. Sweat was collected using an FDA-approved PharmChek patch from 26 healthy human subjects to determine the levels of the 2 study inflammatory markers. Correlation analysis was performed for preclinical validation of the SWEATSENSER with ELISA as the reference method. On-body continuous monitoring measurements were performed on 20 human subjects using EnLiSense's SWEATSENSER wearable device for real-time monitoring studies. RESULTS The sensor device can detect interleukin-1β and C-reactive protein in sweat over a dynamic range of 3 log orders. Pearson correlation of r = 0.99 and r = 0.95 was achieved for IL-1β and CRP, respectively, for the SWEATSENSER with ELISA. Bland-Altman results further confirmed a good agreement (mean bias of -0.25 and -3.9 pg/mL for IL-1β and CRP, respectively) of the device with the reference method, demonstrating applicability of the device for real-time monitoring. Continuous on-body measurements were performed in 20 healthy human subjects for the detection of IL-1β to establish the preclinical utility of the sensor device. The continuous on-body measurements in healthy cohort reported a mean IL-1β concentration of ~28 pg/mL. Stable measurements for over continuous 30 hours was reported by the device. CONCLUSION This work demonstrates the first proof-of-feasibility of multiplexed cytokine and inflammatory marker detection in passively expressed eccrine sweat in a wearable form-factor that can be utilized toward better management of inflammatory bowel disease. This is a first step toward demonstrating a noninvasive enabling technology that can enable baseline tracking of an inflammatory response. Furthermore, this is the first study to report and quantify the presence of CRP in human eccrine sweat.
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Affiliation(s)
- Badrinath Jagannath
- Department of Bioengineering, The University of Texas at Dallas, Richardson, TX, USA
| | - Kai-Chun Lin
- Department of Bioengineering, The University of Texas at Dallas, Richardson, TX, USA
| | - Madhavi Pali
- Department of Bioengineering, The University of Texas at Dallas, Richardson, TX, USA
| | - Devang Sankhala
- Department of Electrical Engineering, The University of Texas at Dallas, Richardson, TX, USA
| | | | - Shalini Prasad
- Department of Bioengineering, The University of Texas at Dallas, Richardson, TX, USA
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Brown CY, Sadlon T, Hope CM, Wong YY, Wong S, Liu N, Withers H, Brown K, Bandara V, Gundsambuu B, Pederson S, Breen J, Robertson SA, Forrest A, Beyer M, Barry SC. Molecular Insights Into Regulatory T-Cell Adaptation to Self, Environment, and Host Tissues: Plasticity or Loss of Function in Autoimmune Disease. Front Immunol 2020; 11:1269. [PMID: 33072063 PMCID: PMC7533603 DOI: 10.3389/fimmu.2020.01269] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 05/19/2020] [Indexed: 12/19/2022] Open
Abstract
There has been much interest in the ability of regulatory T cells (Treg) to switch function in vivo, either as a result of genetic risk of disease or in response to environmental and metabolic cues. The relationship between levels of FOXP3 and functional fitness plays a significant part in this plasticity. There is an emerging role for Treg in tissue repair that may be less dependent on FOXP3, and the molecular mechanisms underpinning this are not fully understood. As a result of detailed, high-resolution functional genomics, the gene regulatory networks and key functional mediators of Treg phenotype downstream of FOXP3 have been mapped, enabling a mechanistic insight into Treg function. This transcription factor-driven programming of T-cell function to generate Treg requires the switching on and off of key genes that form part of the Treg gene regulatory network and raises the possibility that this is reversible. It is plausible that subtle shifts in expression levels of specific genes, including transcription factors and non-coding RNAs, change the regulation of the Treg gene network. The subtle skewing of gene expression initiates changes in function, with the potential to promote chronic disease and/or to license appropriate inflammatory responses. In the case of autoimmunity, there is an underlying genetic risk, and the interplay of genetic and environmental cues is complex and impacts gene regulation networks frequently involving promoters and enhancers, the regulatory elements that control gene expression levels and responsiveness. These promoter–enhancer interactions can operate over long distances and are highly cell type specific. In autoimmunity, the genetic risk can result in changes in these enhancer/promoter interactions, and this mainly impacts genes which are expressed in T cells and hence impacts Treg/conventional T-cell (Tconv) function. Genetic risk may cause the subtle alterations to the responsiveness of gene regulatory networks which are controlled by or control FOXP3 and its target genes, and the application of assays of the 3D organization of chromatin, enabling the connection of non-coding regulatory regions to the genes they control, is revealing the direct impact of environmental/metabolic/genetic risk on T-cell function and is providing mechanistic insight into susceptibility to inflammatory and autoimmune conditions.
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Affiliation(s)
- Cheryl Y Brown
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Timothy Sadlon
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Women's and Children's Health Network, North Adelaide, SA, Australia
| | | | - Ying Y Wong
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Soon Wong
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Ning Liu
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - Holly Withers
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Katherine Brown
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Veronika Bandara
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Batjargal Gundsambuu
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Stephen Pederson
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - James Breen
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - Sarah Anne Robertson
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Alistair Forrest
- QEII Medical Centre and Centre for Medical Research, Harry Perkins Institute of Medical Research, Murdoch, WA, Australia
| | - Marc Beyer
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Simon Charles Barry
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Women's and Children's Health Network, North Adelaide, SA, Australia
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Shen Y, Zou J, Chen M, Zhang Z, Liu C, Jiang S, Qian D, Duan JA. Protective effects of Lizhong decoction on ulcerative colitis in mice by suppressing inflammation and ameliorating gut barrier. JOURNAL OF ETHNOPHARMACOLOGY 2020; 259:112919. [PMID: 32360800 DOI: 10.1016/j.jep.2020.112919] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 04/21/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lizhong Decoction (LZD) is a classical prescription firstly recorded in "Shanghan Lun". It has been used to clinically treat ulcerative colitis (UC) for thousands of years. However, its mechanism is not clear up to now. AIM OF THE STUDY The goal of this study was to assess the amelioration of LZD on dextran sodium sulfate (DSS)-induced colitis in mice and further clarify its mechanism. MATERIALS AND METHODS The ulcerative colitis model induced by DSS was successfully established and applied to evaluate the intervention effect after oral administration of LZD. Furthermore, the expression of key targets in inflammatory signaling pathways and intestinal tight junction proteins were investigated by enzyme-linked immunosorbent assay (ELISA) and quantitative real time polymerase chain reaction (qPCR) analysis. RESULTS The results showed that all doses of LZD could notably improve DSS-induced colon lesions, reduce histological scores, prolong colon length and increase body weight. Colonic inflammation in UC mice was significantly alleviated by inhibiting the activities of myeloperoxidase (MPO) and superoxide dismutase (SOD), reducing the yield of nitric oxide (NO) and inflammatory cytokines such as interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6), and along with promoting the production of anti-inflammatory cytokines such as interleukin-4 (IL-4) and interleukin-10 (IL-10) after LZD treatment. Furthermore, LZD remarkably down-regulated the level of toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB) mRNA and up-regulated the expression of tight junction proteins (zonula occluden-1, occludin and claudin-1) in UC mice. CONCLUSION In summary, this study indicated that LZD could notably improve UC symptoms by suppressing inflammation and ameliorating gut barrier, which provided scientific basis for its clinical application in the future.
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Affiliation(s)
- Yumeng Shen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Junfeng Zou
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Mengjun Chen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Zhimiao Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Chen Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Shu Jiang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China.
| | - Dawei Qian
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China.
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Ige SF, Adeniyi MJ, Olayinka AT, Kehinde IC. Role of dietary maize formulations in the healing of experimental acetic acid induced ulcerative colitis in male rats. CHINESE J PHYSIOL 2020; 63:156-162. [PMID: 32859882 DOI: 10.4103/cjp.cjp_33_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Dietary factors do not only contribute to remission of diseases but also play important roles in the progression of medical conditions. We investigated the effect of different formulations of maize diets on the healing of experimental acetic acid-induced ulcerative colitis (UC) in male rats. Thirty-five (35) male Wistar rats (150-170 g) were randomly divided into control (CTR), UC, UC + high maize diet (HMD), UC + low maize diet (LMD), and UC + maize-free diet (MFD) groups. CTR, UC, UC + HMD, UC + LMD, and UC + MFD groups were administered different formulations of dietary maize ranging from 0% to 70%. Body weight change (BWC), colon weight, macroscopic ulcer score, catalase, glutathione (GSH), tumor necrosis factor-α (TNF-α), myeloperoxidase, diarrhea score, superoxide dismutase (SOD), Ki-67 expression, and histological studies were done. Results were analyzed using SPSS 23. UC + LMD and UC + MFD groups showed a duration-dependent reduction in negative BWC, respectively. When compared with UC group, UC + LMD and UC + MFD significantly increased (P < 0.05) GSH and SOD respectively but had no effect on TNF-α and diarrhea score. UC + HMD increased diarrhea and macroscopic ulcer scores with Ki-67 expression highest in UC + MFD. The study indicated that consumption of either LMD or maize-free diet by colitic rats relatively enhanced healing of UC.
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Affiliation(s)
- Serah Funke Ige
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria
| | - Mayowa J Adeniyi
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, Edo University, Iyamho, Edo State, Nigeria
| | - Alabi Timilehin Olayinka
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria
| | - Idowu Christiana Kehinde
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria
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Cannabinoid agonists possibly mediate interaction between cholinergic and cannabinoid systems in regulating intestinal inflammation. Med Hypotheses 2020; 139:109613. [DOI: 10.1016/j.mehy.2020.109613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 02/07/2023]
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Bertani L, Caviglia GP, Antonioli L, Pellicano R, Fagoonee S, Astegiano M, Saracco GM, Bugianesi E, Blandizzi C, Costa F, Ribaldone DG. Serum Interleukin-6 and -8 as Predictors of Response to Vedolizumab in Inflammatory Bowel Diseases. J Clin Med 2020; 9:jcm9051323. [PMID: 32370274 PMCID: PMC7290461 DOI: 10.3390/jcm9051323] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 12/15/2022] Open
Abstract
Vedolizumab, a monoclonal antibody directed against integrin α4β7, is an effective treatment for inflammatory bowel diseases. However, a significant number of patients do not achieve steroid-free clinical remission in the first year of treatment. An early identification of these patients is one of the most important challenges for clinicians and offers the possibility of therapeutic optimization in order to personalize biological therapy. The aim of our study was to test the prediction ability of interleukin (IL)-6 and -8 of clinical response after 12 months of therapy with vedolizumab (T2). We performed a prospective, multicentre study in patients affected by inflammatory bowel disease by analysing cytokines level before starting vedolizumab (T0) and after 10 weeks of therapy (T1). In the overall cohort (n = 54), IL-8 decrease > 2.6 pg/mL in the first 10 weeks of therapy was able to predict clinical response (area under the curve (AUC) = 0.70, sensitivity = 66%, specificity = 75%, p = 0.010), negative C-reactive protein (CRP) (AUC = 0.71, sensitivity = 64%, specificity = 80%, p = 0.009) and calprotectin < 250 mg/kg (AUC = 0.69, sensitivity = 64%, specificity = 78%, p = 0.030) after 44 weeks of therapy. In patients with ulcerative colitis (n = 40), baseline IL-8 values > 8.6 pg/mL and a decrease of IL-6 values > 0.4 pg/mL from T0 to T1 were significant and independent predictors of clinical response after 12 months of vedolizumab therapy (odds ratio (OR) = 6.96, 95% CI 1.27–38.22, p = 0.026 and OR = 7.29, 95% CI 1.42–37.50, p = 0.017, respectively). In patients with Crohn’s disease (n = 14), baseline IL-8 values > 8.6 pg/mL and baseline IL-6 values > 1.6 pg/mL allowed the identification of patients achieving negative CRP at T2 (AUC = 0.75, sensitivity = 74%, specificity = 76%, p < 0.001) and patients with faecal calprotectin values < 250 mg/kg at T2 (AUC = 0.71, sensitivity = 78%, specificity = 63%, p = 0.004). In conclusion, our study highlights a potential clinical role of serum cytokine levels for the prediction of clinical and biochemical steroid-free response in patients treated with vedolizumab.
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Affiliation(s)
- Lorenzo Bertani
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy;
| | - Gian Paolo Caviglia
- Department of Medical Sciences, University of Turin, 10126 Turin, Italy; (G.M.S.); (E.B.)
- Correspondence: (G.P.C.); (D.G.R.); Tel.: +39–011–6333918 (D.G.R.)
| | - Luca Antonioli
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.A.); (C.B.)
| | - Rinaldo Pellicano
- Unit of Gastroenterology, Molinette Hospital, 10126 Turin, Italy; (R.P.); (M.A.)
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Centre, 10126 Turin, Italy;
| | - Marco Astegiano
- Unit of Gastroenterology, Molinette Hospital, 10126 Turin, Italy; (R.P.); (M.A.)
| | - Giorgio Maria Saracco
- Department of Medical Sciences, University of Turin, 10126 Turin, Italy; (G.M.S.); (E.B.)
| | - Elisabetta Bugianesi
- Department of Medical Sciences, University of Turin, 10126 Turin, Italy; (G.M.S.); (E.B.)
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.A.); (C.B.)
| | - Francesco Costa
- Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, 56100 Pisa, Italy;
| | - Davide Giuseppe Ribaldone
- Department of Medical Sciences, University of Turin, 10126 Turin, Italy; (G.M.S.); (E.B.)
- Correspondence: (G.P.C.); (D.G.R.); Tel.: +39–011–6333918 (D.G.R.)
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Schirmer B, Rother T, Bruesch I, Bleich A, Werlein C, Jonigk D, Seifert R, Neumann D. Genetic Deficiency of the Histamine H 4-Receptor Reduces Experimental Colorectal Carcinogenesis in Mice. Cancers (Basel) 2020; 12:cancers12040912. [PMID: 32276475 PMCID: PMC7226035 DOI: 10.3390/cancers12040912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 02/08/2023] Open
Abstract
Colorectal cancer (CRC), a severe complication of inflammatory bowel diseases, is a common type of cancer and accounts for high mortality. CRC can be modeled in mice by application of the tumor promoter, azoxymethane (AOM), in combination with dextran sodium sulfate (DSS), which are able to induce colitis-like manifestations. Active colitis correlates with high mucosal concentrations of histamine, which, together with the histamine receptor subtype 4 (H4R), provide a pro-inflammatory function in a mouse colitis model. Here, we analyzed whether H4R is involved in the pathogenesis of AOM/DSS-induced CRC in mice. As compared to wild type (WT) mice, AOM/DSS-treated mice lacking H4R expression (TM) demonstrate ameliorated signs of CRC, i.e., significantly reduced loss of body weight, stiffer stool consistency, and less severe perianal bleeding. Importantly, numbers and diameters of tumors and the degree of colonic inflammation are dramatically reduced in TM mice as compared to WT mice. This is concomitant with a reduced colonic inflammatory response involving expression of cyclooxygenase 2 and the production of C-X-C motif chemokine ligand 1 (CXCL1) and CXCL2. We conclude that H4R is involved in the tumorigenesis of chemically-induced CRC in mice via cyclooxygenase 2 expression and, probably, CXCL1 and CXCL2 as effector molecules.
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Affiliation(s)
- Bastian Schirmer
- Institute of Pharmacology, Hannover Medical School, 30625 Hannover, Germany
| | - Tamina Rother
- Institute of Pharmacology, Hannover Medical School, 30625 Hannover, Germany
- Institute of Pathology and German Center of Lung Research (DZL), Partner site BREATH, Hannover Medical School, 30625 Hannover, Germany
| | - Inga Bruesch
- Institute of Transfusion Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Andre Bleich
- Institute of Transfusion Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Christopher Werlein
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany
| | - Danny Jonigk
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany
| | - Roland Seifert
- Institute of Pharmacology, Hannover Medical School, 30625 Hannover, Germany
| | - Detlef Neumann
- Institute of Pharmacology, Hannover Medical School, 30625 Hannover, Germany
- Correspondence: ; Tel.: +49-511-532-4082
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Bertani L, Baglietto L, Antonioli L, Fornai M, Tapete G, Albano E, Ceccarelli L, Mumolo MG, Pellegrini C, Lucenteforte E, de Bortoli N, Bellini M, Marchi S, Blandizzi C, Costa F. Assessment of serum cytokines predicts clinical and endoscopic outcomes to vedolizumab in ulcerative colitis patients. Br J Clin Pharmacol 2020; 86:1296-1305. [PMID: 32027388 DOI: 10.1111/bcp.14235] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/26/2019] [Accepted: 12/01/2019] [Indexed: 12/13/2022] Open
Abstract
AIMS Vedolizumab (VDZ) prevents migration of activated leucocytes into inflamed mucosa. This study aimed to assess the patterns of serum cytokines in ulcerative colitis (UC) patients at baseline and during VDZ treatment, and to investigate their association with mucosal healing and clinical remission. METHODS We enrolled consecutive UC patients eligible for treatment with VDZ. A panel of serum cytokines were measured by fluorescence assay at weeks 0, 6 and 22. Colonoscopy was performed at baseline and week 54, to evaluate mucosal healing. The time trends of serum cytokines were analysed by log-linear mixed effect models, and their prognostic accuracy was evaluated by logistic regression. RESULTS Out of 27 patients included in the analysis, at week 54 mucosal healing was achieved in 12 (44%) and clinical remission in 17 (63%). Mucosal healing was associated with higher interleukin (IL)-8 values at baseline and with significant decrease in IL-6 and IL-8 levels over the first 6 weeks. A significant reduction of IL-6 and IL-8 levels over the first 6 weeks of treatment was associated also with clinical remission. Logistic models including, among the predictors, IL-6 and IL-8 at baseline and their changes over the first 6 weeks of treatment had 83% sensitivity and 87% specificity to predict mucosal healing, and 82% sensitivity and 90% specificity to predict clinical remission. CONCLUSION In UC patients, the serum patterns of IL-6 and IL-8 at baseline and over the first 6 weeks of treatment with VDZ could be useful to predict therapeutic outcome.
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Affiliation(s)
- Lorenzo Bertani
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.,Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, Pisa, Italy
| | - Laura Baglietto
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Luca Antonioli
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Matteo Fornai
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Gherardo Tapete
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Eleonora Albano
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Linda Ceccarelli
- Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, Pisa, Italy
| | - Maria Gloria Mumolo
- Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, Pisa, Italy
| | | | - Ersilia Lucenteforte
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Nicola de Bortoli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Massimo Bellini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Santino Marchi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Francesco Costa
- Department of General Surgery and Gastroenterology, IBD Unit, Pisa University Hospital, Pisa, Italy
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21
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Batista JA, Magalhães DDA, Sousa SG, Ferreira JDS, Pereira CMC, Lima JVDN, de Albuquerque IF, Bezerra NLSD, de Brito TV, Monteiro CEDS, Franco AX, Di Lenardo D, Oliveira LA, Feitosa JPDA, de Paula RCM, Barros FCN, Freitas ALP, de Oliveira JS, Vasconcelos DFP, Soares PMG, Barbosa ALDR. Polysaccharides derived from Morinda citrifolia Linn reduce inflammatory markers during experimental colitis. JOURNAL OF ETHNOPHARMACOLOGY 2020; 248:112303. [PMID: 31614204 DOI: 10.1016/j.jep.2019.112303] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE There are many reports of pharmacological activities of extracts and fractions of different vegetable-derived products in the scientific literature and in folk medicine. Ethnopharmacological use of these products by various communities continues to be extensively explored, and they account for more than half of all medications used worldwide. Polysaccharides (PLS) extracted from plants such as Morinda Citrifolia Linn present therapeutic potential in treatment of inflammatory bowel diseases (IBD) such as ulcerative colitis (UC). AIM OF THE STUDY To evaluate the anti-inflammatory action of Noni-PLS against the intestinal damage in UC induced by acetic acid in mice. MATERIALS AND METHODS In acetic acid-induced colitis, the mice were treated intraperitoneally (ip) with Noni-PLS (0.1, 0.3, and 3.0 mg/kg) or subcutaneously (sc) with dexamethasone (2.0 mg/kg) 30 min before euthanasia to determine the best dose of Noni-PLS with an anti-inflammatory effect in the course of UC. The colonic tissue samples were collected for macroscopic, wet weight, microscopic and biochemical (myeloperoxidase (MPO), glutathione (GSH), malondialdehyde (MDA), nitrate/nitrite (NO3/NO2), cytokines, cyclooxygenase (COX-2) and inducible nitric oxide (iNOS)) analyses. RESULTS Treatment with Noni-PLS reduced the intestinal damage induced by acetic acid as it reduced macroscopic and microscopic scores and the wet weight of the colon. In addition, MPO activity and levels of GSH, MDA, NO3/NO2, pro-inflammatory cytokines, and COX-2 expression reduced. CONCLUSIONS This study suggests that Noni-PLS exhibits anti-inflammatory action against intestinal damage by reducing inflammatory cell infiltration, oxidative stress, pro-inflammatory action of cytokines, COX-2 and iNOS expression in the inflamed colon. Noni-PLS shows therapeutic potential against inflammatory disorders like UC.
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Affiliation(s)
- Jalles Arruda Batista
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Diva de Aguiar Magalhães
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Stefany Guimarães Sousa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Jayro Dos Santos Ferreira
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Cynthia Maria Carvalho Pereira
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - José Victor do Nascimento Lima
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Ieda Figueira de Albuquerque
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Nayonara Lanara Sousa Dutra Bezerra
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | - Tarcisio Vieira de Brito
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil
| | | | - Alvaro Xavier Franco
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | - David Di Lenardo
- Laboratory of Analysis and Histological Processing, LAPHIS, Department of Biomedicine - Federal University of Piauí, Parnaíba, Brazil
| | - Lorena Almeida Oliveira
- LabPol - Polymer Laboratory, Department of Organic and Inorganic Chemistry of the Federal University of Ceará, Fortaleza, Brazil
| | - Judith Pessoa de Andrade Feitosa
- LabPol - Polymer Laboratory, Department of Organic and Inorganic Chemistry of the Federal University of Ceará, Fortaleza, Brazil
| | - Regina Célia Monteiro de Paula
- LabPol - Polymer Laboratory, Department of Organic and Inorganic Chemistry of the Federal University of Ceará, Fortaleza, Brazil
| | - Francisco Clarck Nogueira Barros
- Laboratory of Proteins and Carbohydrates of Marine Algae, Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Brazil
| | - Ana Lúcia Ponte Freitas
- Laboratory of Proteins and Carbohydrates of Marine Algae, Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Brazil
| | - Jefferson Soares de Oliveira
- Laboratory of Biochemistry and Microorganisms and Plant Biology, Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | | | - Pedro Marcos Gomes Soares
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | - André Luiz Dos Reis Barbosa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Post-graduation Program in Biotechnology - Federal University of Piauí, Parnaiba, Brazil.
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22
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Konishi K, Igarashi H, Maeda S, Uchida E, Hanazono K, Tamamoto T, Uchida K, Endoh D, Ohno K. Distribution of regulatory T cells in inflammatory colorectal polyps of miniature dachshunds. Vet Immunol Immunopathol 2019; 218:109938. [PMID: 31518913 DOI: 10.1016/j.vetimm.2019.109938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/18/2019] [Accepted: 08/31/2019] [Indexed: 02/07/2023]
Abstract
Inflammatory colorectal polyp (ICRP) is an emerging disease in Miniature Dachshunds (MDs). Animals with this disease exhibit multiple polyps with severe neutrophil infiltration that respond to immunosuppressive therapy. Macrophages in polypoid lesions have been described to play an important role in neutrophil infiltration in the lesion by producing IL-8. In contrast, IL-10, an anti-inflammatory cytokine, was also reported to be upregulated in polypoid lesions, but its significance in the pathogenesis of ICRP has not been clarified. Regulatory T cells (Tregs) are the main source of IL-10 production and contribute to the maintenance of intestinal homeostasis. Therefore, the objective of this research was to compare the distribution of Tregs in polypoid lesions of ICRPs and the association between the distribution and expression of pro- or anti-inflammatory cytokines. Tissue biopsy specimens of polypoid lesions were collected from 28 MDs with ICRP. Those of macroscopically non-polypoid colonic mucosa from 24 MDs with ICRPs and 21 control dogs were further included as controls. Real-time quantitative polymerase chain reaction was used to quantify gene expression of IL-1β, IL-4, IL-6, IL-8, IL-10, IL-17, IL-22, IFN-γ, TNF-α, TGF-β, and forkhead box protein P3 (Foxp3) in each tissue sample. The numbers of Foxp3-positive cells (Tregs) and ionized calcium binding adapter molecule 1 (Iba-1)-positive cells (macrophages) were determined by immunohistochemistry. The gene expression of IL-1β, IL-6, IL-8, TNF-α, IFN-γ, IL-17, IL-10, TGF-β, and Foxp3 was significantly upregulated in polypoid lesions relative to control levels. The numbers of Foxp3-positive Tregs and Iba-1-positive macrophages were significantly increased in polypoid lesions compared to those in the non-polypoid colonic mucosa of MDs with ICRPs and control dogs. The upregulation of IL-10 was moderately correlated with the distribution of Tregs in polypoid lesions from MDs with ICRPs. In addition, the relative upregulation of IL-1β, IL-6, and IL-8 in polypoid lesions, compared to expression in non-polypoid colonic mucosa of MDs with ICRPs, was significantly greater than that of IL-10. These results indicate that increases in Treg numbers and anti-inflammatory cytokines in polypoid lesions comprise reactive changes in response to the inflammation, which warrants further investigation.
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Affiliation(s)
- Keisuke Konishi
- Laboratory of Veterinary Radiation Biology, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Hirotaka Igarashi
- Laboratory of Veterinary Radiation Biology, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan; Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan.
| | - Shingo Maeda
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Eri Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kiwamu Hanazono
- Laboratory of Veterinary Radiation Biology, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Takashi Tamamoto
- Laboratory of Veterinary Internal Medicine, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Kazuyuki Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Daiji Endoh
- Laboratory of Veterinary Radiation Biology, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Koichi Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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23
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Convallatoxin protects against dextran sulfate sodium-induced experimental colitis in mice by inhibiting NF-κB signaling through activation of PPARγ. Pharmacol Res 2019; 147:104355. [DOI: 10.1016/j.phrs.2019.104355] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/08/2019] [Accepted: 07/15/2019] [Indexed: 01/14/2023]
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24
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Correlation between endoscopic and histological validated scoring indices in Crohn's disease. Dig Liver Dis 2019; 51:812-817. [PMID: 30718202 DOI: 10.1016/j.dld.2019.01.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/27/2018] [Accepted: 01/06/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND It is of crucial importance to evaluate disease activity by means of endoscopy and histopathology in Crohn's disease (CD). Nonetheless, correlation between endoscopic and histological validated indices has not been verified. AIMS We aim to correlate the Simple Endoscopic Score for Crohns disease (SES-CD) with two validated widely used histological indices in patients with established CD. METHODS The SES-CD at the worst affected area was scored and histological disease activity using Global Histologic Disease Activity Score (GHAS or D'Haens score) and the Naini and Cortina Score (NCS) was scored independently by two pathologists blinded to the clinical information and endoscopic results. Spearman correlation between the SES-CD, GHAS and NCS were performed. RESULTS 143 patients, 32 with SES-CD scores 0-2, 57 with 3-6, 37 with 7-15, and 17 with ≥16. Correlation coefficients between SES-CD and GHAS were r = 0.86 (95% CI 0.80-0.91, p < 0.001) and between SES-CD and NCS r = 0.85 (95% CI 0.81-0.88, p < 0.001). There was a strong correlation between the two histological indices (r = 0.70, 95% CI 0.59-0.78, p < 0.001). Mucosal healing without histological disease activity was most correlated with SES-CD score 0 or 1. CONCLUSIONS The SES-CD strongly correlates with both GHAS and NCS. The SES-CD of 0 to 1 best represents histological remission that correlates with quiescent disease activity.
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25
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Mitchell NE, Harrison N, Junga Z, Singla M. Heart Under Attack: Cardiac Manifestations of Inflammatory Bowel Disease. Inflamm Bowel Dis 2018; 24:2322-2326. [PMID: 29788235 DOI: 10.1093/ibd/izy157] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Indexed: 12/12/2022]
Abstract
There is a well-established association between chronic inflammation and an elevated risk of heart disease among patients with systemic autoimmune conditions. This review aims to summarize existing literature on the relationship between inflammatory bowel disease and ischemic heart disease, heart failure, arrhythmia, and pericarditis, with particular attention to approaches to management and treatment.
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Affiliation(s)
- Natalie E Mitchell
- Department of Internal Medicine, Walter Reed National Military Medical Center, Bethesda, Maryland
| | - Nicole Harrison
- Gastroenterology Service , Walter Reed National Military Medical Center, Bethesda, Maryland
| | - Zachary Junga
- Gastroenterology Service , Walter Reed National Military Medical Center, Bethesda, Maryland
| | - Manish Singla
- Gastroenterology Service, Walter Reed National Military Medical Center, Bethesda, Maryland.,Department of Internal Medicine, Walter Reed National Military Medical Center, Bethesda, Maryland
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26
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Actinofuranones D-I from a Lichen-Associated Actinomycetes, Streptomyces gramineus, and Their Anti-Inflammatory Effects. Molecules 2018; 23:molecules23092393. [PMID: 30231581 PMCID: PMC6225470 DOI: 10.3390/molecules23092393] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 12/30/2022] Open
Abstract
Six new metabolites, actinofuranones D-I (compounds 1–6), were isolated together with three known compounds—JBIR-108 (7), E-975 (8), and E-492 (9)—from a fermentation broth of Streptomyces gramineus derived from the lichen Leptogium trichophorum. The structures of the new compounds 1–6 were established using comprehensive NMR spectroscopic data analysis, as well as UV, IR, and MS data. The anti-inflammatory activity of these isolated compounds were evaluated by examining their ability to inhibit nitric oxide (NO) production in LPS-stimulated RAW 264.7 macrophage cells. Compounds 4, 5, 8, and 9 attenuated the production of NO due to the suppression of the expression of nitric oxide synthase (iNOS) in LPS-induced RAW 264.7 cells. Moreover, 4, 5, 8, and 9 also inhibited LPS-induced release of proinflammatory cytokines interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α).
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27
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Lv Q, Wang K, Qiao SM, Dai Y, Wei ZF. Norisoboldine, a natural aryl hydrocarbon receptor agonist, alleviates TNBS-induced colitis in mice, by inhibiting the activation of NLRP3 inflammasome. Chin J Nat Med 2018; 16:161-174. [PMID: 29576052 DOI: 10.1016/s1875-5364(18)30044-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Indexed: 02/07/2023]
Abstract
Although the etiology of inflammatory bowel disease is still uncertain, increasing evidence indicates that the excessive activation of NLRP3 inflammasome plays a major role. Norisoboldine (NOR), an alkaloid isolated from Radix Linderae, has previously been demonstrated to inhibit inflammation and IL-1β production. The present study was to examine the effect of NOR on colitis and the underlying mechanism related to NLRP3 inflammasome activation. Our results showed that NOR alleviated colitis symptom in mice induced by 2, 4, 6-trinitrobenzene sulfonic acid (TNBS). Moreover, it significantly reduced expressions of cleaved IL-1β, NLRP3 and cleaved Caspase-1 but not ASC in colons of mice. In THP-1 cells, NOR suppressed the expressions of NLRP3, cleaved Caspase-1 and cleaved IL-1β but not ASC induced by lipopolysaccharide (LPS) and adenosine triphosphate (ATP). Furthermore, NOR could activate aryl hydrocarbon receptor (AhR) in THP-1 cells, inducing CYP1A1 mRNA expression, and promoting dissociation of AhR/HSP90 complexes, association of AhR and ARNT, AhR nuclear translocation, XRE reporter activity and binding activity of AhR/ARNT/XRE. Both siAhR and α-naphthoflavone (α-NF) markedly diminished the inhibition of NOR on NLRP3 inflammasome activation. In addition, NOR elevated Nrf2 level and reduced ROS level in LPS- and ATP-stimulated THP-1 cells, which was reversed by either siAhR or α-NF treatment. Finally, correlations between activation of AhR and attenuation of colitis, inhibition of NLRP3 inflammasome activation and up-regulation of Nrf2 level in colons were validated in mice with TNBS-induced colitis. Taken together, NOR ameliorated TNBS-induced colitis in mice through inhibiting NLRP3 inflammasome activation via regulating AhR/Nrf2/ROS signaling pathway.
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Affiliation(s)
- Qi Lv
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Kai Wang
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Si-Miao Qiao
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Yue Dai
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China.
| | - Zhi-Feng Wei
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China.
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28
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Wang Z, Zhang H, Liu R, Qian T, Liu J, Huang E, Lu Z, Zhao C, Wang L, Chu Y. Peyer's patches-derived CD11b + B cells recruit regulatory T cells through CXCL9 in dextran sulphate sodium-induced colitis. Immunology 2018; 155:356-366. [PMID: 29969845 DOI: 10.1111/imm.12977] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/22/2018] [Accepted: 06/26/2018] [Indexed: 12/13/2022] Open
Abstract
Regulatory T (Treg) cells play an essential role in the maintenance of intestinal homeostasis. In Peyer's patches (PPs), which comprise the most important IgA induction site in the gut-associated lymphoid tissue, Treg cells promote IgA isotype switching. However, the mechanisms underlying their entry into PPs and isotype switching facilitation in activated B cells remain unknown. This study, based on the dextran sulphate sodium (DSS)-induced colitis model, revealed that Treg cells are significantly increased in PPs, along with CD11b+ B-cell induction. Immunofluorescence staining showed that infiltrated Treg cells were located around CD11b+ B cells and produced transforming growth factor-β, thereby inducing IgA+ B cells. Furthermore, in vivo and in vitro studies revealed that CD11b+ B cells in PPs had the capacity to recruit Treg cells into PPs rather than promoting their proliferation. Finally, we found that Treg cell recruitment was mediated by the chemokine CXCL9 derived from CD11b+ B cells in PPs. These findings demonstrate that CD11b+ B cells induced in PPs during colitis actively recruit Treg cells to accomplish IgA isotype switch in a CXCL9-dependent manner.
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Affiliation(s)
- Zhiming Wang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hushan Zhang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Tingting Qian
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jiajing Liu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Enyu Huang
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Zhou Lu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chujun Zhao
- Northfield Mount Hermon School, Mount Hermon, MA, USA
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Centre, Fudan University, Shanghai, China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Centre, Fudan University, Shanghai, China
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Tao JH, Duan JA, Zhang W, Jiang S, Guo JM, Wei DD. Polysaccharides From Chrysanthemum morifolium Ramat Ameliorate Colitis Rats via Regulation of the Metabolic Profiling and NF-κ B/TLR4 and IL-6/JAK2/STAT3 Signaling Pathways. Front Pharmacol 2018; 9:746. [PMID: 30042683 PMCID: PMC6049019 DOI: 10.3389/fphar.2018.00746] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 06/19/2018] [Indexed: 12/22/2022] Open
Abstract
Studies have indicated that Chrysanthemum polysaccharides (CP) could prominently ameliorate colitis rats, but its possible mechanism remains unclear. In this study, the underlying mechanism of CP was explored by the metabolic profiling analysis and correlated signaling pathways. TNBS/ethanol induced colitis was used to investigate the intervention efficacy following oral administration of CP. The levels of cytokines such as TNF-α, IL-6, IFN-γ and IL-1β, and the activities of SOD, MPO, and MDA were determined. We also performed western-blot for p65, TLR4, p-JAK2, and STAT3 protein expression in the colon tissue to probe their mechanisms of correlated signaling pathways. What’s more, the metabolic changes in plasma and urine from colitis rats were investigated based on UPLC-Q-TOF/MS combined with MetabolynxTM software. The potential biomarkers and metabolic pathways were also tentatively confirmed. The metabolic profiles of plasma and urine were clearly improved in model rats after oral administration of CP. Thirty-two (17 in serum and 15 in urine) potential biomarkers were identified. The endogenous metabolites were mainly involved in linoleic acid, retinol, arachidonic acid, glycerophospholipid and primary bile acid metabolism in plasma, and nicotinate and nicotinamide, ascorbate and aldarate, histidine and β-alanine metabolism in urine. After polysaccharides intervention, these markers turned back to normal level at some extent. Meanwhile, the elevated expression levels of pp65, TLR4, p-STAT3, and p-JAK2 were significantly decreased after treatment. Results suggested that CP would be a potential prebiotics for alleviation of TNBS-induced colitis. The study paved the way for the further exploration of the pathogenesis, early diagnosis and curative drug development of the colitis.
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Affiliation(s)
- Jin-Hua Tao
- School of Pharmacy, Nantong University, Nantong, China
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wei Zhang
- School of Pharmacy, Nantong University, Nantong, China
| | - Shu Jiang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jian-Ming Guo
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Dan-Dan Wei
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
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The pre-treatment characteristics and evaluation of the effects of recombinant human growth hormone therapy in children with growth hormone deficiency and celiac disease or inflammatory bowel disease. Cent Eur J Immunol 2018; 43:69-75. [PMID: 29736148 PMCID: PMC5927175 DOI: 10.5114/ceji.2018.74875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 12/21/2017] [Indexed: 12/20/2022] Open
Abstract
The aim of the study was to investigate the coincidence of growth hormone deficiency (GHD) and celiac disease (CD) or inflammatory bowel disease (IBD) in patients referred for short stature, and to evaluate the baseline anthropometric parameters and the effectiveness of recombinant human growth hormone (rhGH) therapy in the first year in those patients (GHD+CD/IBD subgroup) in comparison to patients with GHD without CD or IBD (GHD-CD/IBD subgroup). Material and methods The study was retrospective and included 2196 short patients (height SDS [Standard Deviation Score] ≤ –1.2). 1454 patients had height SDS ≤ –2. Twenty-nine patients suffered from CD or IBD. GHD was confirmed in 419 patients with height SDS ≤ –2. The coexistence of GHD and CD or IBD was found in seven patients (GHD+CD/IBD subgroup). Results At baseline the GHD-CD/IBD subgroup did not differ significantly in chronological age, height SDS, height velocity (HV) before rhGH therapy, body weight SDS, and body mass index SDS from the GHD+CD/IBD subgroup. The improvement in height SDS within the first year of rhGH therapy was higher in the GHD+CD/IBD subgroup than in the GHD-CD/IBD subgroup and the difference was statistically significant (p<0.05). HV in the first year of rhGH therapy was also significantly higher in the GHD+CD/IBD subgroup than in the GHD-CD/IBD subgroup (p < 0.05). Conclusions In patients with chronic inflammatory disorders of the gastrointestinal tract, especially celiac disease, coexisting with GHD, rhGH therapy could be effective and should be administered together with therapy of primary gastrointestinal disease.
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Wang K, Li YF, Lv Q, Li XM, Dai Y, Wei ZF. Bergenin, Acting as an Agonist of PPARγ, Ameliorates Experimental Colitis in Mice through Improving Expression of SIRT1, and Therefore Inhibiting NF-κB-Mediated Macrophage Activation. Front Pharmacol 2018; 8:981. [PMID: 29375382 PMCID: PMC5770370 DOI: 10.3389/fphar.2017.00981] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 12/21/2017] [Indexed: 12/31/2022] Open
Abstract
Bergenin, isolated from the herb of Saxifraga stolonifera Curt. (Hu-Er-Cao), has anti-inflammatory, antitussive and wound healing activities. The aim of the present study was to identify the effect of bergenin on experimental colitis, and explored the related mechanisms. Our results showed that oral administration of bergenin remarkably alleviated disease symptoms of mice with dextran sulfate sodium (DSS)-induced colitis, evidenced by reduced DAI scores, shortening of colon length, MPO activity and pathologic abnormalities in colons. Bergenin obviously inhibited the mRNA and protein expressions of IL-6 and TNF-α in colon tissues, but not that of mucosal barrier-associated proteins occludin, E-cadherin and MUC-2. In vitro, bergenin significantly inhibited the expressions of IL-6 and TNF-α as well as nuclear translocation and DNA binding activity of NF-κB-p65 in lipopolysaccharide (LPS)-stimulated peritoneal macrophages and RAW264.7 cells, which was almost reversed by addition of PPARγ antagonist GW9662 and siPPARγ. Subsequently, bergenin was identified as a PPARγ agonist. It could enter into macrophages, bind with PPARγ, promote nuclear translocation and transcriptional activity of PPARγ, and increase mRNA expressions of CD36, LPL and ap2. In addition, bergenin significantly up-regulated expression of SIRT1, inhibited acetylation of NF-κB-p65 and increased association NF-κB-p65 and IκBα. Finally, the correlation between activation of PPARγ and attenuation of colitis, inhibition of IL-6 and TNF-α expressions, NF-κB-p65 acetylation and nuclear translocation, and up-regulation of SIRT1 expression by bergenin was validated in mice with DSS-induced colitis and/or LPS-stimulated macrophages. In summary, bergenin could ameliorate colitis in mice through inhibiting the activation of macrophages via regulating PPARγ/SIRT1/NF-κB-p65 pathway. The findings can provide evidence for the further development of bergenin as an anti-UC drug, and offer a paradigm for the recognization of anti-UC mechanisms of compound with similar structure occurring in traditional Chinese medicines.
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Affiliation(s)
- Kai Wang
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Yun-Fan Li
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Qi Lv
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Xi-Ming Li
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Yue Dai
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Zhi-Feng Wei
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
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Zhang H, Chen W. Interleukin 6 inhibition by triptolide prevents inflammation in a mouse model of ulcerative colitis. Exp Ther Med 2017; 14:2271-2276. [PMID: 28962154 DOI: 10.3892/etm.2017.4778] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 04/21/2017] [Indexed: 12/26/2022] Open
Abstract
The present study aimed to assess interleukin (IL)-6 expression in a murine model of ulcerative colitis (UC) induced by dextran sulfate sodium (DSS) and its potential association with the anti-colitis effects of triptolide (TL). Serum IL-6 levels were measured by ELISA. IL-6 gene expression levels in colonic mucosa specimens were assessed by reverse-transcription quantitative PCR and protein expression was evaluated by western blot analysis and immunohistochemistry. The expression of IL-6 was weak in mucosa specimens from normal control animals and upregulated in DSS-induced mice. In model mice treated with TL (0.4 and 0.6 mg/kg), dexamethasone or mesalazine, IL-6 expression was significantly reduced compared with that in model mice treated with normal saline or propylene glycol (P<0.05), while TL at 0.2 mg/kg did not elicit any significant inhibitory effect. There was no significant difference among TL (0.4 mg/kg and 0.6 mg/kg), mesalazine and dexamethasone treatments (P>0.05) in terms of IL-6 expression or histological score. The results of the present study indicated that IL-6 was overexpressed in a mouse model of UC and was involved in disease progression. In addition, TL exerted therapeutic effects in UC through inhibition of IL-6 expression.
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Affiliation(s)
- Haifeng Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Soochow, Jiangsu 215006, P.R. China.,Department of Infectious Diseases, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Weichang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Soochow, Jiangsu 215006, P.R. China
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Han SY, Kim J, Kim E, Kim SH, Seo DB, Kim JH, Shin SS, Cho JY. AKT-targeted anti-inflammatory activity of Panax ginseng calyx ethanolic extract. J Ginseng Res 2017; 42:496-503. [PMID: 30337810 PMCID: PMC6187086 DOI: 10.1016/j.jgr.2017.06.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/14/2017] [Accepted: 06/20/2017] [Indexed: 01/22/2023] Open
Abstract
Background Korean ginseng (Panax ginseng) plays an anti-inflammatory role in a variety of inflammatory diseases such as gastritis, hepatitis, and colitis. However, inflammation-regulatory activity of the calyx of the P. ginseng berry has not been thoroughly evaluated. To understand whether the calyx portion of the P. ginseng berry is able to ameliorate inflammatory processes, an ethanolic extract of P. ginseng berry calyx (Pg-C-EE) was prepared, and lipopolysaccharide-activated macrophages and HEK293 cells transfected with inflammation-regulatory proteins were used to test the anti-inflammatory action of Pg-C-EE. Methods The ginsenoside contents of Pg-C-EE were analyzed by HPLC. Suppressive activity of Pg-C-EE on NO production, inflammatory gene expression, transcriptional activation, and inflammation signaling events were examined using the Griess assay, reverse transcription-polymerization chain reaction, luciferase activity reporter gene assay, and immunoblotting analysis. Results Pg-C-EE reduced NO production and diminished mRNA expression of inflammatory genes such as cyclooxygenase-2, inducible NO synthase, and tumor necrosis factor-α in a dose-dependent manner. This extract suppressed luciferase activity induced only by nuclear factor-κB. Interestingly, immunoblotting analysis results demonstrated that Pg-C-EE reduced the activities of protein kinase B (AKT)1 and AKT2. Conclusion These results suggest that Pg-C-EE may have nuclear-factor-κB-targeted anti-inflammatory properties through suppression of AKT. The calyx of the P. ginseng berry is an underused part of the ginseng plant, and development of calyx-derived extracts may be useful for treatment of inflammatory diseases.
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Affiliation(s)
- Sang Yun Han
- Department of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Juewon Kim
- Vital Beautie Research Division, Amorepacific Research and Development Center, Suwon, Republic of Korea
| | - Eunji Kim
- Department of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Su Hwan Kim
- Vital Beautie Research Division, Amorepacific Research and Development Center, Suwon, Republic of Korea
| | - Dae Bang Seo
- Vital Beautie Research Division, Amorepacific Research and Development Center, Suwon, Republic of Korea
| | - Jong-Hoon Kim
- Department of Physiology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Song Seok Shin
- Vital Beautie Research Division, Amorepacific Research and Development Center, Suwon, Republic of Korea
| | - Jae Youl Cho
- Department of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, Republic of Korea
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34
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Liu HM, Liao JF, Lee TY. Farnesoid X receptor agonist GW4064 ameliorates lipopolysaccharide-induced ileocolitis through TLR4/MyD88 pathway related mitochondrial dysfunction in mice. Biochem Biophys Res Commun 2017. [PMID: 28647362 DOI: 10.1016/j.bbrc.2017.06.129] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Inflammatory bowel disease (IBD) is a complex and relapsing inflammatory condition of the gastro intestinal tract characterized by diarrhoea and abdominal pain. Farnesoid X receptor (FXR) plays an important role in enteroprotection and mucosal injury by regulating inflammatory responses and barrier function in the intestinal tract. Here we show the mechanisms of FXR agonist, GW4064, inhibits mucosal injury in ileum caused by lipopolysaccharides (LPS). Ileum injury was induced by intraperitoneal injection of LPS in Wild-type (WT) and FXR knockout (KO) mice. GW4064 alleviates LPS-mediated tight junction dysfunction as well as macrophage infiltration in WT mice, but not in FXR KO mice. Interesting, GW4064 suppresses NACHT, LRR and PYD domains-containing protein 3 (NALP3) inflammasome mediates tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6 and IL-1β, as well as mitochondrial respiratory complexes mRNA expression in WT and FXR KO mice treated with LPS. This results demonstrated that central roles of FXR in coordinating regulation of both inflammation and mitochondrial dysfunction. We propose that GW4064 is promising therapeutic agent for treatment of ileocolitis.
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Affiliation(s)
- Hsuan-Miao Liu
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Jyh-Fei Liao
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Tzung-Yan Lee
- Graduate Institute of Traditional Chinese Medicine, School of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.
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35
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Th1/Th2 Balance and Th17/Treg-Mediated Immunity in relation to Murine Resistance to Dextran Sulfate-Induced Colitis. J Immunol Res 2017; 2017:7047201. [PMID: 28584821 PMCID: PMC5444015 DOI: 10.1155/2017/7047201] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/09/2017] [Indexed: 12/19/2022] Open
Abstract
Background The role of the Th17/Treg balance in the development of experimental colitis remains poorly understood. Methods We exploited the differential response of BALB/c mice and C57BL/6 mice towards drinking water mediated by dextran sulfate sodium (DSS) challenge. Results DSS-resistant BALB/c mice were characterized by low levels of IFN-γ and TNF-α but high levels of IL-4, IL-6, IL-10, IL-17A, IL-17F, and colon lamina propria and mesenteric lymph node (MLN) CD4+CD25+FoxP3+ T cells when compared to C57BL/6 mice. Collectively, these data indicate the propensity of BALB/c mice towards a Th2/Th17/Treg-polarized immunity protecting these animals against DSS challenge, whereas Th1-polarization of C57BL/6 mice confers sensitivity to DSS-induced colitis. Conclusions The intrinsic congenital capacity of mouse strains with respect to T cell proliferation determines sensitivity to experimental colitis.
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36
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Guo T, Lin Q, Li X, Nie Y, Wang L, Shi L, Xu W, Hu T, Guo T, Luo F. Octacosanol Attenuates Inflammation in Both RAW264.7 Macrophages and a Mouse Model of Colitis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3647-3658. [PMID: 28122452 DOI: 10.1021/acs.jafc.6b05465] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Octacosanol has multiple biological functions. In this study, the anti-inflammatory effect and molecular mechanism of octacosanol were evaluated by using dextran sulfate sodium (DSS)-induced ulcerative colitis model in mice and lipopolysaccharide (LPS)-stimulated mouse macrophage RAW264.7 cells. The colitis mouse model was induced by 3.0% DSS in 8-week ICR mice and octacosanol orally administered with 100 mg/kg/day. The results showed that octacosanol significantly improved the health status of mice and reduced DSS-induced pathological damage in the colonic tissues. Octacosanol obviously inhibited the mRNA and protein expression levels of pro-inflammatory factors of colonic tissues. In vitro, octacosanol administration significantly reduced the expression of mRNA or protein of pro-inflammatory cytokines and the phosphorylation of c-Jun N-terminal kinase and p38, and it also partly prevented LPS-induced translocations of NF-κB and AP-1. Octacosanol has anti-inflammatory effect, and its molecular mechanism may be involved in downregulating the expression of inflammatory factors and blocking of MAPK/NF-κB/AP-1 signaling pathway.
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Affiliation(s)
- Tianyi Guo
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Qinlu Lin
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Xinhua Li
- Department of Gastroenterology, Xiangya Hospital, Central South University , Changsha, Hunan 410008, China
| | - Ying Nie
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Long Wang
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Limin Shi
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Wei Xu
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Tao Hu
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Ting Guo
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
| | - Feijun Luo
- Laboratory of Molecular Nutrition, National Engineering Laboratory for Rice and Byproducts, College of Food Science and Engineering, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
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Growth Hormone Resistance-Special Focus on Inflammatory Bowel Disease. Int J Mol Sci 2017; 18:ijms18051019. [PMID: 28486400 PMCID: PMC5454932 DOI: 10.3390/ijms18051019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/01/2017] [Accepted: 05/03/2017] [Indexed: 12/25/2022] Open
Abstract
Growth hormone (GH) plays major anabolic and catabolic roles in the body and is important for regulating several aspects of growth. During an inflammatory process, cells may develop a state of GH resistance during which their response to GH stimulation is limited. In this review, we will emphasize specific mechanisms governing the formation of GH resistance in the active phase of inflammatory bowel disease. The specific molecular effects mediated through individual inflammatory mediators and processes will be highlighted to provide an overview of the transcriptional, translational and post-translational inflammation-mediated impacts on the GH receptor (GHR) along with the impacts on GH-induced intracellular signaling. We also will review GH’s effects on mucosal healing and immune cells in the context of experimental colitis, human inflammatory bowel disease and in patients with short bowel syndrome.
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38
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Liu XQ, Zou QP, Huang JJ, Yook CS, Whang WK, Lee HK, Kwon OK. Inhibitory effects of 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid on lipopolysaccharide-induced TNF-α, IL-1β, and the high mobility group box 1 release in macrophages. Biosci Biotechnol Biochem 2017; 81:1305-1313. [PMID: 28345393 DOI: 10.1080/09168451.2017.1301803] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We investigated the anti-inflammatory effects of 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid (HLEDA)-a lupane-type triterpene isolated from leaves of Acanthopanax gracilistylus W. W.Smith (AGS), as well as the underlying molecular mechanisms in lipopolysaccharide (LPS)-induced RAW264.7 cells. Our results demonstrated that HLEDA concentration-dependently reduced the production of nitric oxide (NO), significantly suppressed LPS-induced expression of TNF-α and IL-1β at the mRNA and protein levels in RAW264.7 cells. Further analysis revealed that HLEDA could reduce the secretion of High Mobility Group Box 1 (HMGB1). Additionally, the results showed that HLEDA efficiently decreased nuclear factor-kappaB (NF-κB) activation by inhibiting the degradation and phosphorylation of IκBα. These results suggest that HLEDA exerts anti-inflammatory properties in LPS-induced macrophages, possibly through inhibition of the NF-κB signaling pathway, which mediates the expression of pro-inflammatory cytokines. These results warrant further studies that would concern candidate therapy for diseases, such as fulminant hepatitis and rheumatology of triterpenoids in AGS.
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Affiliation(s)
- Xiang-Qian Liu
- a School of Pharmacy, Hunan University of Chinese Medicine , Changsha , China.,b School of Chemistry and Chemical Engineering, Central South University , Changsha , China
| | - Qin-Peng Zou
- b School of Chemistry and Chemical Engineering, Central South University , Changsha , China.,c Changsha Broad-Ocean Bio-science and Technique Co.,Ltd. , Changsha , China
| | - Jian-Jun Huang
- d Department of Clinical Biochemistry , Xiangya Medical College, Central South University , Changsha , China
| | - Chang-Soo Yook
- e College of Pharmacy, KyungHee University , Seoul , Korea
| | | | - Hyeong-Kyu Lee
- g Korea Research Institute of Bioscience and Biotechnology , Chungbuk , Korea
| | - Ok-Kyoung Kwon
- g Korea Research Institute of Bioscience and Biotechnology , Chungbuk , Korea
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Obeid S, Wankell M, Charrez B, Sternberg J, Kreuter R, Esmaili S, Ramezani-Moghadam M, Devine C, Read S, Bhathal P, Lopata A, Ahlensteil G, Qiao L, George J, Hebbard L. Adiponectin confers protection from acute colitis and restricts a B cell immune response. J Biol Chem 2017; 292:6569-6582. [PMID: 28258220 DOI: 10.1074/jbc.m115.712646] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/21/2017] [Indexed: 12/18/2022] Open
Abstract
Adiponectin demonstrates beneficial effects in various metabolic diseases, including diabetes, and in bowel cancer. Recent data also suggest a protective role in colitis. However, the precise molecular mechanisms by which adiponectin and its receptors modulate colitis and the nature of the adaptive immune response in murine models are yet to be elucidated. Adiponectin knock-out mice were orally administered dextran sulfate sodium for 7 days and were compared with wild-type mice. The severity of disease was analyzed histopathologically and through cytokine profiling. HCT116 colonic epithelial cells were employed to analyze the in vitro effects of adiponectin and AdipoR1 interactions in colonic injury following dextran sulfate sodium treatment. Adiponectin knock-out mice receiving dextran sulfate sodium exhibited severe colitis, had greater inflammatory cell infiltration, and an increased presence of activated B cells compared with controls. This was accompanied by an exaggerated proinflammatory cytokine profile and increased STAT3 signaling. Adiponectin knock-out mouse colons had markedly reduced proliferation and increased epithelial apoptosis and cellular stress. In vitro, adiponectin reduced apoptotic, anti-proliferative, and stress signals and restored STAT3 signaling. Following the abrogation of AdipoR1 in vitro, these protective effects of adiponectin were abolished. In summary, adiponectin maintains intestinal homeostasis and protects against murine colitis through interactions with its receptor AdipoR1 and by modulating adaptive immunity.
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Affiliation(s)
- Stephanie Obeid
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | | | | | | | | | - Saeed Esmaili
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Mehdi Ramezani-Moghadam
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Carol Devine
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Scott Read
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Prithi Bhathal
- the University of Melbourne, Victoria, VIC 3010, Australia, and
| | | | - Golo Ahlensteil
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Liang Qiao
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Jacob George
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia
| | - Lionel Hebbard
- From the Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, NSW 2145, Australia, .,the Department of Molecular and Cell Biology and.,Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
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Yao P, Tan F, Gao H, Wang L, Yang T, Cheng Y. Effects of probiotics on Toll‑like receptor expression in ulcerative colitis rats induced by 2,4,6‑trinitro‑benzene sulfonic acid. Mol Med Rep 2017; 15:1973-1980. [PMID: 28260106 PMCID: PMC5364977 DOI: 10.3892/mmr.2017.6226] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/24/2016] [Indexed: 12/19/2022] Open
Abstract
The present study aimed to investigate the regulatory effect of probiotics on the expression of Toll‑like receptors (TLRs) in an ulcerative colitis (UC) rat model, and to determine the role of probiotics in the underlying mechanisms through which UC develops and progresses in rat models. Rats were randomly allocated to one of the four following groups: i) The healthy control, ii) the model, iii) the Golden bifid treatment group, and iv) the TLR4 monoclonal antibody (TLR4mAb) intervention group. The UC rat model was established using 2,4,6‑trinitro‑benzene sulfonic acid. The general status and histological changes of rats were scored using the disease activity index and the histopathological scoring method, respectively. In these rats, the expression of TLR4 and TLR2 was measured using reverse transcription‑quantitative polymerase chain reaction. The expression of TLR4 and TLR2 in the model group was significantly higher than that in the healthy control group. However, when compared with the model rats, those that received either Golden bifid treatment or TLR4mAb intervention exhibited significantly decreased mRNA expression levels of TLR4 and TLR2 (P<0.05). The development of UC is characterized by an abnormal immune response in the intestines. Probiotics alleviated inflammatory reactions in rats with UC. The underlying mechanism of UC may be associated with the expression of TLRs and the subsequent release of inflammatory cytokines.
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Affiliation(s)
- Ping Yao
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Fang Tan
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Hongliang Gao
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Lei Wang
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Tao Yang
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Yongbo Cheng
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
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Campaniello MA, Mavrangelos C, Eade S, Harrington AM, Blackshaw LA, Brierley SM, Smid SD, Hughes PA. Acute colitis chronically alters immune infiltration mechanisms and sensory neuro-immune interactions. Brain Behav Immun 2017; 60:319-332. [PMID: 27864046 DOI: 10.1016/j.bbi.2016.11.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 11/07/2016] [Accepted: 11/15/2016] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Little is understood regarding how disease progression alters immune and sensory nerve function in colitis. We investigated how acute colitis chronically alters immune recruitment and the impact this has on re-activated colitis. To understand the impact of disease progress on sensory systems we investigated the mechanisms underlying altered colonic neuro-immune interactions after acute colitis. DESIGN Inflammation was compared in mouse models of health, acute tri-nitrobenzene sulphonic acid (TNBS) colitis, Remission and Reactivated colitis. Cytokine concentrations were compared by ELISA in-situ and in explanted colon tissue. Colonic infiltration by CD11b/F4-80 macrophage, CD4 THELPER (TH) and CD8 TCYTOTOXIC (TC) and α4β7 expression on mesenteric lymph node (MLN) TH and TC was determined by flow cytometry. Cytokine and effector receptor mRNA expression was determined on colo-rectal afferent neurons and the mechanisms underlying cytokinergic effects on high-threshold colo-rectal afferent function were investigated using electrophysiology. RESULTS Colonic damage, MPO activity, macrophage infiltration, IL-1β and IL-6 concentrations were lower in Reactivated compared to Acute colitis. TH infiltration and α4β7 expression on TH MLN was increased in Remission but not Acute colitis. IFN-γ concentrations, TH infiltration and α4β7 expression on TH and TC MLN increased in Reactivated compared to Acute colitis. Reactivated explants secreted more IL-1β and IL-6 than Acute explants. IL-6 and TNF-α inhibited colo-rectal afferent mechanosensitivity in Remission mice via a BKCa dependent mechanism. CONCLUSIONS Acute colitis persistently alters immune responses and afferent nerve signalling pathways to successive episodes of colitis. These findings highlight the complexity of viscero-sensory neuro-immune interactions in painful remitting and relapsing diseases.
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Affiliation(s)
- Melissa A Campaniello
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Chris Mavrangelos
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Samuel Eade
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia; Department of Pharmacology, University of Adelaide, Adelaide, Australia
| | - Andrea M Harrington
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - L Ashley Blackshaw
- Centre for Neuroscience and Trauma, Blizard Institute, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, UK
| | - Stuart M Brierley
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Scott D Smid
- Department of Pharmacology, University of Adelaide, Adelaide, Australia
| | - Patrick A Hughes
- Centre for Nutrition and Gastrointestinal Diseases, University of Adelaide and South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.
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Romero-Estrada A, Maldonado-Magaña A, González-Christen J, Bahena SM, Garduño-Ramírez ML, Rodríguez-López V, Alvarez L. Anti-inflammatory and antioxidative effects of six pentacyclic triterpenes isolated from the Mexican copal resin of Bursera copallifera. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:422. [PMID: 27784308 PMCID: PMC5081879 DOI: 10.1186/s12906-016-1397-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 10/11/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Bursera copallifera (Burseraceae) releases a resin known as "copal ancho" which has been used, since pre-Colombian times, as ceremonially burned incense and to treat tooth ache, tumors, arthritis, cold, cough, and various inflammatory conditions; however, its anti-inflammatory potential is poorly studied. The aim of the present study was to isolate, quantify, and to investigate the anti-inflammatory activity of triterpene compounds isolated from the copal resin of B. copallifera. METHODS The constituents present in the total resin of B. copallifera were obtained by successive chromatographic procedures, and quantitative analysis was performed by High Performance Liquid Chromatography (HPLC). Anti-inflammatory effects of the isolated triterpenes were investigated to determine their inhibitory effects on phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced edema in mice, viability and nitric oxide (NO) production inhibition on lipopolysaccharide (LPS)-activated RAW 264.7 macrophages, and inhibition of cyclooxygenase (COX)-1, COX-2 and secretory Phospholipase A2 (sPLA2) activities in vitro. RESULTS Quantitative phytochemical analysis of the copal resin showed the presence of six pentacyclic triterpenes of which, 3-epilupeol (59.75 % yield) and α-amyrin (21.1 % yield) are the most abundant. Among the isolated triterpenes, 3-epilupeol formiate (Inhibitory Concentration 50 % (IC50) = 0.96 μmol), α.amyrin acetate (IC50 = 1.17 μmol), lupenone (IC50 = 1.05 μmol), and 3-epilupeol (IC50 = 0.83 μmol) showed marked inhibition of the edema induced by TPA in mice. α-amyrin acetate and 3-epilupeol acetate, at 70 μM, also inhibited the activity of COX-2 by 62.85 and 73.28 % respectively, while α-amyrin and 3-epilupeol were the best inhibitors of the production of NO in LPS-activated RAW 264.7 cells with IC50 values of 15.5 and 8.98 μM respectively, and did not affected its viability. All compounds moderately inhibited the activity of PLA2. CONCLUSIONS This work supports the folk use of B. copallifera and provides the basis for future investigations about the therapeutic use of this resin in treating inflammation.
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Affiliation(s)
- Antonio Romero-Estrada
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Amalia Maldonado-Magaña
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Judith González-Christen
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Silvia Marquina Bahena
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - María Luisa Garduño-Ramírez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Verónica Rodríguez-López
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Laura Alvarez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, Morelos, 62209, Mexico.
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The Rhizome Mixture of Anemarrhena asphodeloides and Coptis chinensis Attenuates Mesalazine-Resistant Colitis in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:5895184. [PMID: 27761147 PMCID: PMC5059552 DOI: 10.1155/2016/5895184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 08/18/2016] [Accepted: 08/18/2016] [Indexed: 12/17/2022]
Abstract
We investigated the effect of DWac on the gut microbiota composition in mice with 2,3,6-trinitrobenzenesulfonic acid- (TNBS-) induced colitis. Treatment with DWac restored TNBS-disturbed gut microbiota composition and attenuated TNBS-induced colitis. Moreover, we examined the effect of DWac in mice with mesalazine-resistant colitis (MRC). Intrarectal injection of TNBS in MRC mice caused severe colitis, as well as colon shortening, edema, and increased myeloperoxidase activity. Treatment with mesalazine (30 mg/kg) did not attenuate TNBS-induced colitis in MRC mice, whereas treatment with DWac (30 mg/kg) significantly attenuated TNBS-induced colitis. Moreover, treatment with the mixture of mesalazine (15 mg/kg) and DWac (15 mg/kg) additively attenuated colitis in MRC mice. Treatment with DWac and its mixture with mesalazine inhibited TNBS-induced activation of NF-κB and expression of M1 macrophage markers but increased TNBS-suppressed expression of M2 macrophage markers. Furthermore, these inhibited TNBS-induced T-bet, RORγt, TNF-α, and IL-17 expression but increased TNBS-suppressed Foxp3 and IL-10 expression. However, Th2 cell differentiation and GATA3 and IL-5 expression were not affected. These findings suggest that DWac can ameliorate MRC by increasing the polarization of M2 macrophage and correcting the disturbance of gut microbiota and Th1/Th17/Treg, as well as additively attenuating MRC along with mesalazine.
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Rolny IS, Tiscornia I, Racedo SM, Pérez PF, Bollati-Fogolín M. Lactobacillus delbrueckii subsp lactis CIDCA 133 modulates response of human epithelial and dendritic cells infected with Bacillus cereus. Benef Microbes 2016; 7:749-760. [PMID: 27459335 DOI: 10.3920/bm2015.0191] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
It is known that probiotic microorganisms are able to modulate pathogen virulence. This ability is strain dependent and involves multiple interactions between microorganisms and relevant host's cell populations. In the present work we focus on the effect of a potentially probiotic lactobacillus strain (Lactobacillus delbrueckii subsp. lactis CIDCA 133) in an in vitro model of Bacillus cereus infection. Our results showed that infection of intestinal epithelial HT-29 cells by B. cereus induces nuclear factor kappa B (NF-κB) pathway. Noteworthy, the presence of strain L. delbrueckii subsp.lactis CIDCA 133 increases stimulation. However, B. cereus-induced interleukin (IL)-8 production by epithelial cells is partially abrogated by L. delbrueckii subsp. lactis CIDCA 133. These findings suggest that signalling pathways other than that of NF-κB are involved. In a co-culture system (HT-29 and monocyte-derived dendritic cells), B. cereus was able to translocate from the epithelial (upper) to the dendritic cell compartment (lower). This translocation was partially abrogated by the presence of lactobacilli in the upper compartment. In addition, infection of epithelial cells in the co-culture model, led to an increase in the expression of CD86 by dendritic cells. This effect could not be modified in the presence of lactobacilli. Interestingly, infection of enterocytes with B. cereus triggers production of proinflammatory cytokines by dendritic cells (IL-8, IL-6 and tumour necrosis factor alpha (TNF-α)). The production of TNF-α (a protective cytokine in B. cereus infections) by dendritic cells was increased in the presence of lactobacilli. The present work demonstrates for the first time the effect of L. delbrueckii subsp. lactis CIDCA 133, a potentially probiotic strain, in an in vitro model of B. cereus infection. The presence of the probiotic strain modulates cell response both in infected epithelial and dendritic cells thus suggesting a possible beneficial effect of selected lactobacilli strains on the course of B. cereus infection.
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Affiliation(s)
- I S Rolny
- 1 Cátedra de Microbiología, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115, B1900AJI La Plata, Argentina
| | - I Tiscornia
- 2 Cell Biology Unit, Institut Pasteur de Montevideo, Calle Mataojo 2020, 11400 Montevideo, Uruguay.,3 Laboratorio de Biotecnología, Facultad de Ingeniería-Universidad ORT Uruguay, Cuareim 1451, 11100 Montevideo, Uruguay
| | - S M Racedo
- 4 Laboratory of Experimental and Molecular Hepatology, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 2, 8036 Graz, Austria
| | - P F Pérez
- 1 Cátedra de Microbiología, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115, B1900AJI La Plata, Argentina.,5 Centro de Investigación y Desarrollo en Criotecnología de Alimentos, Calle 47 y 116, B1900AJI La Plata, Argentina
| | - M Bollati-Fogolín
- 2 Cell Biology Unit, Institut Pasteur de Montevideo, Calle Mataojo 2020, 11400 Montevideo, Uruguay
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Safdari B, Sia T, Wattchow D, Smid S. Effects of pro-inflammatory cytokines, lipopolysaccharide and COX-2 mediators on human colonic neuromuscular function and epithelial permeability. Cytokine 2016; 83:231-238. [DOI: 10.1016/j.cyto.2016.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 01/08/2023]
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Abstract
BACKGROUND Distinct CD8+ T-cell subsets such as interleukin-17-expressing Tc17 and Foxp3-expressing Tcreg are functionally similar to CD4+ T cells. Though CD4+ T cells are dysregulated in patients with inflammatory bowel disease (IBD), CD8+ T cells are not well investigated. Vitamin D is an environmental factor which influences T-cell subsets. We assessed the prevalence of CD8+ T-cell subsets among peripheral blood mononuclear cells (PBMC) and lamina propria mononuclear cells (LPMC) of patients with Crohn's disease, patients with ulcerative colitis, and healthy controls. We then tested the effect of 1α,25-dihydroxyvitamin D3 on CD8+ T-cell subsets. METHODS A total of 73 patients with Crohn's disease, 49 patients with ulcerative colitis, and 47 healthy controls were studied. LPMC or PBMC were isolated and flow cytometry was performed. CD3+ T cells, isolated from PBMC, were cultured with or without 1α,25-dihydroxyvitamin D3, before flow cytometry. RESULTS In LPMC, the prevalence of Tcreg was higher in patients with IBD (P < 0.05), whereas Tc17 were higher in patients with ulcerative colitis compared with patients with Crohn's disease and healthy controls (P < 0.05). In PBMC, both Tcreg and Tc17 were higher in patients with IBD (P < 0.01). Double-expressing interferon-γ+ interleukin-17+ and Foxp3+ interleukin-17+ CD8+ T cells were also identified indicating possible CD8+ plasticity. 1α,25-dihydroxyvitamin D3 decreased interferon-γ-expressing Tc1 (P < 0.05), but had no effect on Tc17 or Tcreg. CONCLUSIONS The prevalence of novel CD8+ T-cell subsets is altered in patients with IBD. Double-expressing cells indicate plasticity and were identified in patients with IBD. Vitamin D may have a limited effect on CD8+ T cells by decreasing interferon-γ expression.
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Seong MA, Woo JK, Kang JH, Jang YS, Choi S, Jang YS, Lee TH, Jung KH, Kang DK, Hurh BS, Kim DE, Kim SY, Oh SH. Oral administration of fermented wild ginseng ameliorates DSS-induced acute colitis by inhibiting NF-κB signaling and protects intestinal epithelial barrier. BMB Rep 2016; 48:419-25. [PMID: 25936779 PMCID: PMC4577293 DOI: 10.5483/bmbrep.2015.48.7.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 01/05/2023] Open
Abstract
Ginseng has been widely used for therapeutic and preventive purposes for thousands of years. However, orally administered ginseng has very low bioavailability and absorption in the intestine. Therefore, fermented ginseng was developed to enhance the beneficial effects of ginseng in the intestine. In this study, we investigated the molecular mechanisms underlying the anti-inflammatory activity of fermented wild ginseng (FWG). We found that FWG significantly alleviated the severity of colitis in a dextran sodium sulfate (DSS)-induced colitis mouse model, and decreased expression level of pro-inflammatory cytokines in colonic tissue. Moreover, we observed that FWG suppressed the infiltration of macrophages in DSS-induced colitis. FWG also attenuated the transcriptional activity of nuclear factor-κB (NF-κB) by reducing the translocation of NF-κB into the nucleus. Our data indicate that FWG contains anti-inflammatory activity via NF-κB inactivation and could be useful for treating colitis.
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Affiliation(s)
- Myeong A Seong
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | - Jong Kyu Woo
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | - Ju-Hee Kang
- Research Institute, National Cancer Center, Goyang 410-769, Korea
| | - Yeong Su Jang
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | - Seungho Choi
- College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
| | - Young Saeng Jang
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | - Taek Hwan Lee
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | | | | | | | - Dae Eung Kim
- Sempio Fermentation Research center, Osong 363-954, Korea
| | - Sun Yeou Kim
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
| | - Seung Hyun Oh
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, Korea
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Nübel C, Appel B, Hospach I, Mai M, Krasteva N, Nelles G, Petruschka L, Müller S. Challenges and Opportunities in the Development of Aptamers for TNFα. Appl Biochem Biotechnol 2016; 179:398-414. [PMID: 26922730 DOI: 10.1007/s12010-016-2002-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 01/27/2016] [Indexed: 11/24/2022]
Abstract
RNA aptamers for tumor necrosis factor-alpha (TNFα), for which functionality was demonstrated in L929 cells, show only little affinity for the protein in vitro. Detailed investigation of the aptamer-protein interaction by surface plasmon resonance and quartz crystal microbalance analysis revealed that affinity is not the only crucial parameter for efficacy and functionality of those aptamers. Instead, the sensitive equilibrium of the monomeric and homotrimeric form of soluble TNFα decides on aptamer binding. Our results show that the field of application and the source of TNFα have to be carefully defined before selection of aptamer sequences.
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Affiliation(s)
- Claudia Nübel
- Institut für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald, Germany
| | - Bettina Appel
- Institut für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald, Germany
| | - Ingeborg Hospach
- Materials Science Laboratory, Sony Deutschland GmbH, Stuttgart, Germany.,Institute of Electronics and Sensor Materials, Technical University Freiberg, Freiberg, Germany
| | - Michaela Mai
- Materials Science Laboratory, Sony Deutschland GmbH, Stuttgart, Germany
| | - Nadejda Krasteva
- Materials Science Laboratory, Sony Deutschland GmbH, Stuttgart, Germany
| | - Gabriele Nelles
- Materials Science Laboratory, Sony Deutschland GmbH, Stuttgart, Germany
| | - Lothar Petruschka
- Interfakultäres Institut für Genetik und funktionelle Genomforschung, Ernst-Moritz-Arndt Universität Greifswald, Greifswald, Germany
| | - Sabine Müller
- Institut für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald, Germany.
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Aurand TC, March JC. Development of a synthetic receptor protein for sensing inflammatory mediators interferon‐γ and tumor necrosis factor‐α. Biotechnol Bioeng 2016; 113:492-500. [DOI: 10.1002/bit.25832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/04/2015] [Accepted: 09/09/2015] [Indexed: 11/05/2022]
Affiliation(s)
- T. Christopher Aurand
- Department of Biological and Environmental EngineeringCornell UniversityIthaca14853New York
| | - John C. March
- Department of Biological and Environmental EngineeringCornell UniversityIthaca14853New York
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Schicho R, Marsche G, Storr M. Cardiovascular complications in inflammatory bowel disease. Curr Drug Targets 2016. [PMID: 25642719 DOI: 10.2174/138945011666650202161500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Over the past years, a growing number of studies have indicated that patients suffering from inflammatory bowel disease (IBD) have an increased risk of developing cardiovascular disease. Both are chronic inflammatory diseases and share certain pathophysiological mechanisms that may influence each other. High levels of cytokines, C-reactive protein (CRP), and homocysteine in IBD patients may lead to endothelial dysfunction, an early sign of atherosclerosis. IBD patients, in general, do not show the typical risk factors for cardiovascular disease but changes in lipid profiles similar to the ones seen in cardiovascular events have been reported recently. Higher levels of coagulation factors frequently occur in IBD which may predispose to arterial thromboembolic events. Finally, the gut itself may have an impact on atherogenesis during IBD through its microbiota. Microbial products are released from the inflamed mucosa into the circulation through a leaky barrier. The induced rise in proinflammatory cytokines could contribute to endothelial damage, artherosclerosis and cardiovascular events. Although large retrospective studies favor a link between IBD and cardiovascular diseases, the mechanisms behind still remain to be determined.
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Affiliation(s)
| | | | - Martin Storr
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Austria.
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