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Corridoni D, Rodriguez-Palacios A, Di Stefano G, Di Martino L, Antonopoulos DA, Chang EB, Arseneau KO, Pizarro TT, Cominelli F. Genetic deletion of the bacterial sensor NOD2 improves murine Crohn's disease-like ileitis independent of functional dysbiosis. Mucosal Immunol 2017; 10:971-982. [PMID: 27848951 PMCID: PMC5433921 DOI: 10.1038/mi.2016.98] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/23/2016] [Indexed: 02/07/2023]
Abstract
Although genetic polymorphisms in NOD2 (nucleotide-binding oligomerization domain-containing 2) have been associated with the pathogenesis of Crohn's disease (CD), little is known regarding the role of wild-type (WT) NOD2 in the gut. To date, most murine studies addressing the role of WT Nod2 have been conducted using healthy (ileitis/colitis-free) mouse strains. Here, we evaluated the effects of Nod2 deletion in a murine model of spontaneous ileitis, i.e., the SAMP1Yit/Fc (SAMP) strain, which closely resembles CD. Remarkably, Nod2 deletion improved both chronic cobblestone ileitis (by 50% assessed, as the % of abnormal mucosa at 24 wks of age), as well as acute dextran sodium sulfate (DSS) colitis. Mechanistically, Th2 cytokine production and Th2-transcription factor activation (i.e., STAT6 phosphorylation) were reduced. Microbiologically, the effects of Nod2 deletion appeared independent of fecal microbiota composition and function, assessed by 16S rRNA and metatranscriptomics. Our findings indicate that pharmacological blockade of NOD2 signaling in humans could improve health in Th2-driven chronic intestinal inflammation.
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Affiliation(s)
- D Corridoni
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - A Rodriguez-Palacios
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - G Di Stefano
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - L Di Martino
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - D A Antonopoulos
- Biosciences Division, Argonne National Laboratory, Argonne, Illinois, USA
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - E B Chang
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - K O Arseneau
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
| | - T T Pizarro
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - F Cominelli
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Case Digestive Health Research Institute, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
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52
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Almeida Junior LD, Quaglio AEV, de Almeida Costa CAR, Di Stasi LC. Intestinal anti-inflammatory activity of Ground Cherry ( Physalis angulata L.) standardized CO 2 phytopharmaceutical preparation. World J Gastroenterol 2017; 23:4369-4380. [PMID: 28706419 PMCID: PMC5487500 DOI: 10.3748/wjg.v23.i24.4369] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/25/2017] [Accepted: 04/12/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effects of Ground Cherry (Physalis angulata L.) standardized supercritical CO2 extract in trinitrobenzenesulphonic acid (TNBS) model of rat intestinal inflammation.
METHODS The animals were divided into groups that received vehicle or P. angulata extract (PACO2) orally at the doses 25, 50 and 100 mg/kg daily by 5 d before TNBS damage. Protective effects of PACO2 were assessed by macroscopic analysis, biochemical determinations of the levels of myeloperoxidase (MPO), alkaline phosphatase (ALP), glutathione and cytokines (such as INF-γ, IL-1β, IL-6, IL-10 and TNF-α), gene expression evaluation (including Hsp70, heparanase, NF-κB, mitogen-activated protein kinases (Mapk) 1, 3, 6 and 9, and the mucins genes Muc 1, 2, 3 and 4) and histopathological studies using optical, and electronic (transmission and scanning) microscopy.
RESULTS PACO2 extract promoted a significant reduction in MPO and ALP activities, reducing oxidative stress and neutrophil infiltration. These effects were accompanied by significant reduction of colonic levels of IFN-γ and IL-6 and down-regulation of heparanase, Hsp70, Mapk3, Mapk9, Muc1 and Muc2 genes expression when compared with TNBS-control animals. In addition, protective effects were also evidenced by reduced neutrophil infiltration, recovery of cell architecture and replacement of mucin by histopathological and ultrastructural analysis.
CONCLUSION Physalis angulata supercritical CO2 extract is an intestinal anti-inflammatory product that modulates oxidative stress, immune response and expression of inflammatory mediators, with potentially utility for treating inflammatory bowel disease.
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53
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Tian T, Wang Z, Zhang J. Pathomechanisms of Oxidative Stress in Inflammatory Bowel Disease and Potential Antioxidant Therapies. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4535194. [PMID: 28744337 PMCID: PMC5506473 DOI: 10.1155/2017/4535194] [Citation(s) in RCA: 363] [Impact Index Per Article: 51.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 05/22/2017] [Accepted: 05/31/2017] [Indexed: 12/22/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic gastrointestinal disease whose incidence has risen worldwide in recent years. Accumulating evidence shows that oxidative stress plays an essential role in the pathogenesis and progression of IBD. This review highlights the generation of reactive oxygen species (ROS) and antioxidant defense mechanisms in the gastrointestinal (GI) tract, the involvement of oxidative stress signaling in the initiation and progression of IBD and its relationships with genetic susceptibility and the mucosal immune response. In addition, potential therapeutic strategies for IBD that target oxidative stress signaling are reviewed and discussed. Though substantial progress has been made in understanding the role of oxidative stress in IBD in humans and experimental animals, the underlying mechanisms are still not well defined. Thus, further studies are needed to validate how oxidative stress signaling is involved in and contributes to the development of IBD.
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Affiliation(s)
- Tian Tian
- College of Life Science and Bioengineering, Beijing Jiaotong University, Beijing 100044, China
| | - Ziling Wang
- College of Life Science and Bioengineering, Beijing Jiaotong University, Beijing 100044, China
| | - Jinhua Zhang
- College of Life Science and Bioengineering, Beijing Jiaotong University, Beijing 100044, China
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54
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Diling C, Chaoqun Z, Jian Y, Jian L, Jiyan S, Yizhen X, Guoxiao L. Immunomodulatory Activities of a Fungal Protein Extracted from Hericium erinaceus through Regulating the Gut Microbiota. Front Immunol 2017; 8:666. [PMID: 28713364 PMCID: PMC5492111 DOI: 10.3389/fimmu.2017.00666] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 05/22/2017] [Indexed: 12/22/2022] Open
Abstract
A single-band protein (HEP3) was isolated from Hericium erinaceus using a chemical separation combined with pharmacodynamic evaluation methods. This protein exhibited immunomodulatory activity in lipopolysaccharide-activated RAW 264.7 macrophages by decreasing the overproduction of tumor necrosis factor-α, interleukin (IL)-1β, and IL-6, and downregulating the expression of inducible nitric oxide synthase and nuclear factor-κB p65. Further researches revealed that HEP3 could improve the immune system via regulating the composition and metabolism of gut microbiota to activate the proliferation and differentiation of T cells, stimulate the intestinal antigen-presenting cells in high-dose cyclophosphamide-induced immunotoxicity in mice, and play a prebiotic role in the case of excessive antibiotics in inflammatory bowel disease model mice. Aided experiments also showed that HEP3 could be used as an antitumor immune inhibitor in tumor-burdened mice. The results of the present study suggested that fungal protein from H. erinaceus could be used as a drug or functional food ingredient for immunotherapy because of its immunomodulatory activities.
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Affiliation(s)
- Chen Diling
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Zheng Chaoqun
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,College of Chinese Materia Medica, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Yang Jian
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Li Jian
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,College of Chinese Materia Medica, Guangxi University of Traditional Chinese Medicine, Nanning, China
| | - Su Jiyan
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Xie Yizhen
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Yuewei Edible Fungi Technology Co., Ltd., Guangzhou, China
| | - Lai Guoxiao
- State Key Laboratory of Applied Microbiology South China, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China.,Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,College of Chinese Materia Medica, Guangxi University of Traditional Chinese Medicine, Nanning, China
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55
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Senhaji N, Zaid Y, El Khalfi B, Fahimi M, Martin J, Badre W, Nadifi S, Soukri A. Peroxiredoxin-2 up-regulation in inflammatory bowel disease: Friend or foe? J Gastroenterol Hepatol 2017; 32:1212-1220. [PMID: 27869326 DOI: 10.1111/jgh.13664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 11/04/2016] [Accepted: 11/15/2016] [Indexed: 01/14/2023]
Abstract
BACKGROUND Inflammatory bowel diseases (IBD) are chronic multi-factorial inflammatory disorders. Accumulating investigations have provided compelling evidence that describe the interplay of a complex genetic landscape and inappropriate inflammatory response to intestinal microbes in disease etiopathogenesis but still pose challenges in diagnostic practices. METHOD In this study, comparative proteomic analysis was conducted to identify disease specific proteins underlying IBD pathogenetic mechanisms. Total blood proteins of the IBD patients and healthy subjects were analyzed with one-dimensional electrophoresis; differentially expressed bands were excised and subjected to matrix-assisted laser desorption ionization-time of flight mass spectrometry along with nanoflow liquid chromatography electrospray ionization-tandem mass spectrometry analysis. Presence of glycosylation, hydroxylation, and phosphorylation post-translational modifications was further investigated by immunoprecipitation. RESULTS Peroxiredoxin-2 (PRDX2) and hemoglobin-subunits proteins, which are closely involved in the response to oxidative stress, were identified. PRDX2 was selected for further validation using western blot and reverse transcription-polymerase chain reaction. PRDX2 overexpression was restricted to the protein level within the membrane fraction. Immunoprecipitation identified PRDX2 to be post-translationally glycosylated and phosphorylated. CONCLUSION Our findings demonstrate the implication of PRDX2 in IBD. Future studies are required to establish its functional role and to determine the clinical utility.
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Affiliation(s)
- Nezha Senhaji
- Laboratory of Genetics and Molecular Pathology (LGPM), Faculty of Medicine and Pharmacy of Casablanca, Casablance, Morocco
| | - Younes Zaid
- Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, Montreal, Quebec, Canada.,Centre de Recherche de l'Université Mohamed VI des Sciences de la Santé, Casablanca, Morocco
| | - Bouchra El Khalfi
- Laboratory of Physiology and Molecular Genetics, Faculty of Sciences Aïn Chock, Hassan II University, Casablanca, Morocco
| | - Mina Fahimi
- Gastroenterology Department, CHU IbnRochd, Casablanca, Morocco
| | - Javier Martin
- Instituto de Parasitología y Biomedicina López-Neyra, Consejo Superior de Investigaciones Científicas, P.T.S. Granada, Spain
| | - Wafaa Badre
- Gastroenterology Department, CHU IbnRochd, Casablanca, Morocco
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology (LGPM), Faculty of Medicine and Pharmacy of Casablanca, Casablance, Morocco
| | - Abdelaziz Soukri
- Laboratory of Physiology and Molecular Genetics, Faculty of Sciences Aïn Chock, Hassan II University, Casablanca, Morocco
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56
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The first study on opportunistic intestinal microsporidiosis in IBD patients receiving immunosuppressive medications in Iran. Epidemiol Infect 2017; 145:2095-2099. [PMID: 28502260 DOI: 10.1017/s0950268817000954] [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: 12/15/2022] Open
Abstract
Microsporida are known as opportunistic unicellular organisms and have recently been reclassified as fungi that have been frequently reported from patients with congenital and acquired immunity failure disorders, worldwide. However, use of immunosuppressive medications in inflammatory bowel disease (IBD) patients significantly decreases overall immunity, and increases their susceptibility to opportunistic infections. Totally, 71 stool samples were collected from IBD patients consisted of 69 ulcerative colitis (UC) patients and two Crohn's disease (CD) patients. All patients had taken immunosuppressive and/or immunomodulator drugs for at least 3 weeks. DNA was extracted from all stool samples and Nested PCR was performed using genus-specific primers based on small subunit ribosomal RNA (SSU rRNA) gene. Fisher's Exact Test was applied to evaluate statistical association between microsporidia infection and sex, age and types of IBD. Mean of age ± s.d., women and men percentage of the attended patients were 36·17 ± 11·93, 60·6%, and 39·4%, respectively. A 440-bp fragment of SSU rRNA gene attributed to Enterocytozoon bieneusi was amplified from 12·7% of IBD patients. No Encephalitozoon DNA was detected in the samples. No microsporidia-positive sample was found in CD patients. Fisher's Exact Test showed that there was no statistically significant correlation between intestinal microsporidiosis and age, sex, and IBD types with P values: 0·389, 1·00, and 1·00, respectively. This study has shown IBD patients undergoing immunosuppressive/immunomodulators medications, which may be susceptible to intestinal microsporida infection. E. bieneusi is the commonest intestinal microsporidan reported from IBD patients.
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57
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Roles of Dietary Amino Acids and Their Metabolites in Pathogenesis of Inflammatory Bowel Disease. Mediators Inflamm 2017; 2017:6869259. [PMID: 28392631 PMCID: PMC5368367 DOI: 10.1155/2017/6869259] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 01/18/2017] [Accepted: 02/22/2017] [Indexed: 12/12/2022] Open
Abstract
Inflammatory Bowel Disease (IBD) is a kind of chronic inflammation, which has increasing incidence and prevalence in recent years. IBD mainly divides into Crohn's disease (CD) and ulcerative colitis (UC). It is hard to cure IBD completely, and novel therapies are urgently needed. Amino acids (AAs) and their metabolites are regarded as important nutrients for humans and animals and also play an important role in IBD amelioration. In the present study, the potential protective effects of AAs and their metabolites on IBD had been summarized with the objective to provide insights into IBD moderating using dietary AAs and their metabolites as a potential adjuvant therapy.
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58
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Kmieć Z, Cyman M, Ślebioda TJ. Cells of the innate and adaptive immunity and their interactions in inflammatory bowel disease. Adv Med Sci 2017; 62:1-16. [PMID: 28126697 DOI: 10.1016/j.advms.2016.09.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/02/2016] [Accepted: 09/08/2016] [Indexed: 02/06/2023]
Abstract
Inflammatory bowel disease (IBD) is a group of chronic inflammatory conditions of the gastrointestinal tract that includes two major phenotypes, Crohn's disease and ulcerative colitis that are characterized by different clinical features and different course of the immune response. The exact aetiology of IBD still remains unknown, although it is thought that the diseases result from an excessive immune response directed against microbial or environmentally derived antigens which can be triggered by the disruption of the intestinal epithelial barrier integrity. In this review we present immune mechanisms and interactions between cells of the immune system and tissue environment that contribute to the development and progression of IBD in humans. Since dysregulation of the intestinal immune response is a hallmark of chronic inflammatory conditions, we characterize cells of the innate and adaptive immunity involved in the pathogenesis of IBD and their cross-talks. We describe various subclasses of recently discovered innate lymphoid cells, as well as dendritic cells, macrophages and T cells, including Th17, Th22 and T regulatory cells, present in the intestinal lamina propria and cytokine-mediated regulation of the immune response in IBD, highlighting the role of IL-22 and IL-17A/IL-23 axis. Insights into novel therapeutic modalities targeting certain elements of the immune pathways important for the pathogenesis of IBD have been also shortly presented.
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59
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Anbazhagan AN, Thaqi M, Priyamvada S, Jayawardena D, Kumar A, Gujral T, Chatterjee I, Mugarza E, Saksena S, Onyuksel H, Dudeja PK. GLP-1 nanomedicine alleviates gut inflammation. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2017; 13:659-665. [PMID: 27553076 PMCID: PMC5501083 DOI: 10.1016/j.nano.2016.08.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 07/20/2016] [Accepted: 08/04/2016] [Indexed: 01/15/2023]
Abstract
The gut hormone, glucagon like peptide-1 (GLP-1) exerts anti-inflammatory effects. However, its clinical use is limited by its short half-life. Previously, we have shown that GLP-1 as a nanomedicine (GLP-1 in sterically stabilized phospholipid micelles, GLP-1-SSM) has increased in vivo stability. The current study was aimed at testing the efficacy of this GLP-1 nanomedicine in alleviating colonic inflammation and associated diarrhea in dextran sodium sulfate (DSS) induced mouse colitis model. Our results show that GLP-1-SSM treatment markedly alleviated the colitis phenotype by reducing the expression of pro-inflammatory cytokine IL-1β, increasing goblet cells and preserving intestinal epithelial architecture in colitis model. Further, GLP-1-SSM alleviated diarrhea (as assessed by luminal fluid) by increasing protein expression of intestinal chloride transporter DRA (down regulated in adenoma). Our results indicate that GLP-1 nanomedicine may act as a novel therapeutic tool in alleviating gut inflammation and associated diarrhea in inflammatory bowel disease (IBD).
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Affiliation(s)
- Arivarasu N Anbazhagan
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Mentor Thaqi
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL, USA
| | - Shubha Priyamvada
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Dulari Jayawardena
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL, USA
| | - Anoop Kumar
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Tarunmeet Gujral
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Ishita Chatterjee
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Edurne Mugarza
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Seema Saksena
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Hayat Onyuksel
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL, USA
| | - Pradeep K Dudeja
- Department of Medicine, Division of Gastroenterology and Hepatology, College of Medicine, University of Illinois, Chicago, IL, USA; Jesse Brown VA Medical Center, Chicago, IL, USA.
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Zheng SZ, Zhang DG, Wu H, Jiang LJ, Jin J, Lin XQ, Ding R, Jiang Y. The association between vitamin D receptor polymorphisms and serum 25-hydroxyvitamin D levels with ulcerative colitis in Chinese Han population. Clin Res Hepatol Gastroenterol 2017; 41:110-117. [PMID: 27771345 DOI: 10.1016/j.clinre.2016.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 08/18/2016] [Accepted: 09/02/2016] [Indexed: 02/04/2023]
Abstract
There is now growing evidence suggesting that Vitamin D is playing a critical role in modulating the innate and adaptive immune responses. Several polymorphisms have been identified in the vitamin D receptor (VDR) gene but their association with ulcerative colitis (UC) susceptibility remained controversy. In the current study, we examined the association between VDR polymorphisms and serum level of 25-hydroxyvitamin D [25(OH)D] with UC in Chinese Han population. Polymorphisms of FokI (rs2228570)/BsmI (rs1544410)/ApaI (rs7975232)/TaqI (rs731236) in the VDR gene were assessed in a case-control study comprising 404 UC patients and 612 controls. Moreover, 25(OH)D levels were measured by electro-chemiluminescence immunoassay in 75 UC patients and 120 controls. Our results suggested that BsmI polymorphism frequency was significantly lower in UC patients (P=0.028), and the frequency of AAC haplotype formed by BsmI, ApaI and TaqI was also significantly lower in UC patients (P=0.012). Moreover, FokI polymorphism was more frequently observed in patients with mild and moderate UC as compared to those with severe UC (P=0.001, P<0.001, respectively). Average 25(OH)D level was lower in UC patients than in controls (19.3±6.8 vs. 21.8±7.3ng/mL, P=0.017), and was significantly correlated with hemoglobin (β=0.49, P<0.001), C-reactive protein (β=-0.36, P<0.001), severity of UC (β=-0.21, P=0.025) and FokI polymorphism (β=-0.20, P=0.031) in UC patients. Interestingly, there was a significant correlation between FokI polymorphism and vitamin D deficiency (<20ng/mL) in UC patients (P=0.006). Together, these results supported that VDR polymorphisms and 25(OH)D level were significantly correlated with UC risk and severity in Chinese Han population.
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Affiliation(s)
- Shu-Zi Zheng
- Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Da-Guan Zhang
- Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hao Wu
- Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li-Jia Jiang
- Department of Gastroenterology, the Wenzhou Central Hospital, Wenzhou, China
| | - Jie Jin
- Department of Gastroenterology, the Wenzhou Central Hospital, Wenzhou, China
| | - Xiu-Qing Lin
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ran Ding
- Department of Gastroenterology, Wenzhou Renmin Hospital, Wenzhou, China
| | - Yi Jiang
- Department of Gastroenterology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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61
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Collins FL, Schepper JD, Rios-Arce ND, Steury MD, Kang HJ, Mallin H, Schoenherr D, Camfield G, Chishti S, McCabe LR, Parameswaran N. Immunology of Gut-Bone Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1033:59-94. [PMID: 29101652 PMCID: PMC5749247 DOI: 10.1007/978-3-319-66653-2_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In recent years a link between the gastrointestinal tract and bone health has started to gain significant attention. Dysbiosis of the intestinal microbiota has been linked to the pathology of a number of diseases which are associated with bone loss. In addition modulation of the intestinal microbiota with probiotic bacteria has revealed to have both beneficial local and systemic effects. In the present chapter, we discuss the intestinal and bone immune systems, explore how intestinal disease affects the immune system, and examine how these pathologic changes could adversely impact bone health.
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Affiliation(s)
- Fraser L Collins
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | | | - Naiomy Deliz Rios-Arce
- Department of Physiology, Michigan State University, East Lansing, MI, USA
- Comparative Medicine and Integrative Biology Program, East Lansing, MI, USA
| | - Michael D Steury
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Ho Jun Kang
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Heather Mallin
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Daniel Schoenherr
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Glen Camfield
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Saima Chishti
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Laura R McCabe
- Department of Physiology and Department of Radiology, Biomedical Imaging Research Centre, Michigan State University, East Lansing, MI, USA.
| | - Narayanan Parameswaran
- Department of Physiology, Michigan State University, East Lansing, MI, USA.
- Comparative Medicine and Integrative Biology Program, East Lansing, MI, USA.
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62
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The Dual Role of Neutrophils in Inflammatory Bowel Diseases. J Clin Med 2016; 5:jcm5120118. [PMID: 27999328 PMCID: PMC5184791 DOI: 10.3390/jcm5120118] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/06/2016] [Accepted: 12/13/2016] [Indexed: 12/21/2022] Open
Abstract
Inflammatory bowel diseases (IBD), including Crohn’s disease and ulcerative colitis, are characterised by aberrant immunological responses leading to chronic inflammation without tissue regeneration. These two diseases are considered distinct entities, and there is some evidence that neutrophil behaviour, above all other aspects of immunity, clearly separate them. Neutrophils are the first immune cells recruited to the site of inflammation, and their action is crucial to limit invasion by microorganisms. Furthermore, they play an essential role in proper resolution of inflammation. When these processes are not tightly regulated, they can trigger positive feedback amplification loops that promote neutrophil activation, leading to significant tissue damage and evolution toward chronic disease. Defective chemotaxis, as observed in Crohn’s disease, can also contribute to the disease through impaired microbe elimination. In addition, through NET production, neutrophils may be involved in thrombo-embolic events frequently observed in IBD patients. While the role of neutrophils has been studied in different animal models of IBD for many years, their contribution to the pathogenesis of IBD remains poorly understood, and no molecules targeting neutrophils are used and validated for the treatment of these pathologies. Therefore, it is crucial to improve our understanding of their mode of action in these particular conditions in order to provide new therapeutic avenues for IBD.
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Inflammatory bowel disease: exploring gut pathophysiology for novel therapeutic targets. Transl Res 2016; 176:38-68. [PMID: 27220087 DOI: 10.1016/j.trsl.2016.04.009] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 03/17/2016] [Accepted: 04/28/2016] [Indexed: 12/14/2022]
Abstract
Ulcerative colitis and Crohn's disease are the 2 major phenotypes of inflammatory bowel disease (IBD), which are influenced by a complex interplay of immunological and genetic elements, though the precise etiology still remains unknown. With IBD developing into a globally prevailing disease, there is a need to explore new targets and a thorough understanding of the pathophysiological differences between the healthy and diseased gut could unearth new therapeutic opportunities. In this review, we provide an overview of the major aspects of IBD pathogenesis and thereafter present a comprehensive analysis of the gut pathophysiology leading to a discussion on some of the most promising targets and biologic therapies currently being explored. These include various gut proteins (CXCL-10, GATA-3, NKG2D, CD98, microRNAs), immune cells recruited to the gut (mast cells, eosinophils, toll-like receptors 2, 4), dysregulated proinflammatory cytokines (interleukin-6, -13, -18, -21), and commensal microbiota (probiotics and fecal microbiota transplantation). We also evaluate some of the emerging nonconventional therapies being explored in IBD treatment focusing on the latest developments in stem cell research, oral targeting of the gut-associated lymphoid tissue, novel anti-inflammatory signaling pathway targeting, adenosine deaminase inhibition, and the beneficial effects of antioxidant and nutraceutical therapies. In addition, we highlight the growth of biologics and their targets in IBD by providing information on the preclinical and clinical development of over 60 biopharmaceuticals representing the state of the art in ulcerative colitis and Crohn's disease drug development.
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Tian Z, Liu J, Liao M, Li W, Zou J, Han X, Kuang M, Shen W, Li H. Beneficial Effects of Fecal Microbiota Transplantation on Ulcerative Colitis in Mice. Dig Dis Sci 2016; 61:2262-2271. [PMID: 26846120 DOI: 10.1007/s10620-016-4060-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 01/26/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Ulcerative colitis (UC) is a chronic condition and the most common form of inflammatory bowel disease. The goal of standard treatment is mainly to induce and maintain remission with anti-inflammatory, immunosuppressive agents, and/or colectomy. Fecal microbiota transplantation (FMT) has been used successfully to treat relapsing or refractory Clostridium difficile infection. The alteration of microbiota in mouse models of UC as well as in patients suggested the possibility of treating UC with FMT. AIMS To study the effects of FMT on dextran sodium sulfate (DSS)-induced UC model in mice. METHODS Littermates of BALB/c and C57BL/6J were randomized into four groups: normal control , treatment with DSS for 7 days (DSS - FMT), treatment with DSS followed by FMT for another 8 days (DSS + FMT), and treatment with DSS and FMT followed by another 5 days for recovery (remission). Body weight, survival rate, and DAI scores of mice in each group were recorded. Changes in distal colon were studied by histopathology. Alterations of spleen and lamina propria regulatory lymphocytes, major bacterial species in feces and inflammatory cytokines in colon were also studied. RESULTS C57BL/6J mice experienced more significant weight loss than BALB/c mice after DSS treatment, regardless of whether the two strains of mice were co-housed or not. FMT caused reversal of DAI scores in BALB/c but not in C57BL/6J mice. In BALB/c mice, FMT also reduced colon inflammation that was paralleled by decreased inflammatory cytokine levels, altered bacterial microbiota, and regulatory lymphocyte proportions. CONCLUSIONS FMT is effective in a mouse model of UC through its modulation on gut microbiota and the host immune system.
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Affiliation(s)
- Zhihui Tian
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Jie Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Mengyu Liao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Wenjuan Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Jiaqi Zou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Xinxin Han
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Mingjie Kuang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Wanqiu Shen
- Department of Chemical Biology, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Haidong Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China.
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Simon D, Cianferoni A, Spergel JM, Aceves S, Holbreich M, Venter C, Rothenberg ME, Terreehorst I, Muraro A, Lucendo AJ, Schoepfer A, Straumann A, Simon HU. Eosinophilic esophagitis is characterized by a non-IgE-mediated food hypersensitivity. Allergy 2016; 71:611-20. [PMID: 26799684 DOI: 10.1111/all.12846] [Citation(s) in RCA: 153] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2016] [Indexed: 12/19/2022]
Abstract
Eosinophilic esophagitis (EoE) is a chronic disease characterized clinically by symptoms of esophageal dysfunction and histologically by eosinophil-predominant inflammation. EoE is frequently associated with concomitant atopic diseases and immunoglobulin E (IgE) sensitization to food allergens in children as well as to aeroallergens and cross-reactive plant allergen components in adults. Patients with EoE respond well to elemental and empirical food elimination diets. Recent research has, however, indicated that the pathogenesis of EoE is distinct from IgE-mediated food allergy. In this review, we discuss the individual roles of epithelial barrier defects, dysregulated innate and adaptive immune responses, and of microbiota in the pathogenesis of EoE. Although food has been recognized as a trigger factor of EoE, the mechanism by which it initiates or facilitates eosinophilic inflammation appears to be largely independent of IgE and needs to be further investigated. Understanding the pathogenic role of food in EoE is a prerequisite for the development of specific diagnostic tools and targeted therapeutic procedures.
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Affiliation(s)
- D. Simon
- Department of Dermatology, Inselspital; Bern University Hospital; University of Bern; Bern Switzerland
| | - A. Cianferoni
- Division of Allergy and Immunology; Children's Hospital Philadelphia; University of Pennsylvania; Philadelphia PA USA
- Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
| | - J. M. Spergel
- Division of Allergy and Immunology; Children's Hospital Philadelphia; University of Pennsylvania; Philadelphia PA USA
- Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
| | - S. Aceves
- Division of Allergy and Immunology; Department of Pediatrics and Medicine; Center for Infection, Inflammation, and Immunology; La Jolla CA USA
| | - M. Holbreich
- Allergy and Asthma Consultants; Indianapolis IN USA
| | - C. Venter
- Division of Allergy and Immunology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- School of Health Sciences and Social Work; University of Portsmouth; Portsmouth UK
| | - M. E. Rothenberg
- Division of Allergy and Immunology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - I. Terreehorst
- Department of ENT and Pediatrics; AMC; Amsterdam The Netherlands
| | - A. Muraro
- Food Allergy Referral Centre Veneto Region; Padua General University Hospital; Padua Italy
| | - A. J. Lucendo
- Department of Gastroenterology; Hospital General de Tomelloso; Tomelloso Spain
| | - A. Schoepfer
- Division of Gastroenterology and Hepatology; Centre Hospitalier Universitaire Vaudois/CHUV; Lausanne Switzerland
| | | | - H.-U. Simon
- Institute of Pharmacology; University of Bern; Bern Switzerland
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Abstract
Research in the past decade has greatly expanded our understanding of the pathogenesis of inflammatory bowel disease, which includes Crohn's disease and ulcerative colitis. In addition to the sophisticated network of immune response, the epithelial layer lining the mucosa has emerged as an essential player in the development and persistence of intestinal inflammation. As the frontline of numerous environmental insults in the gut, the intestinal epithelial cells are subject to various cellular stresses. In eukaryotic cells, disturbance of endoplasmic reticulum homeostasis may lead to the accumulation of unfolded and misfolded proteins in the ER lumen, a condition called ER stress. This cellular process activates the unfolded protein response, which functions to enhance the ER protein folding capacity, alleviates the burden of protein synthesis and maturation, and activates ER-associated protein degradation. Paneth and goblet cells, 2 secretory epithelial populations in the gut, are particularly sensitive to ER stress on environmental or genetic disturbances. Recent studies suggested that epithelial ER stress may contribute to the pathogenesis of Crohn's disease and ulcerative colitis by compromising protein secretion, inducing epithelial cell apoptosis and activating proinflammatory response in the gut. Our knowledge of ER stress in intestinal epithelial function may open avenue to new inflammatory bowel disease therapies by targeting the ER protein folding homeostasis in the cells lining the intestinal mucosa.
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Rosacea in Patients with Ulcerative Colitis and Crohn's Disease: A Population-based Case-control Study. Inflamm Bowel Dis 2016; 22:680-7. [PMID: 26717319 DOI: 10.1097/mib.0000000000000644] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Cutaneous manifestations are common in patients with inflammatory bowel diseases (IBDs) (ulcerative colitis [UC] and Crohn's disease [CD]). Previous case reports described patients with IBD who developed rosacea. IBD and rosacea are inflammatory epithelial diseases, presumably associated with changes in the innate immune system. We explored the association between IBD and incident rosacea. METHODS We conducted a population-based matched (1:1) case-control analysis on the association between IBD and rosacea, stratified by IBD disease duration and severity. We used data from the UK-based Clinical Practice Research Datalink. Cases had an incident diagnosis of rosacea recorded between 1995 and 2013. RESULTS Among 80,957 rosacea cases and the same number of controls, a history of UC was associated with an increased risk of rosacea (odds ratio [OR] 1.65, 95% confidence interval [CI], 1.43-1.90), with the highest OR in those with short UC duration (OR 2.85, 95% confidence interval, 1.80-4.50 for patients with <2 years of disease history). A history of CD yielded an overall OR of 1.49 (95% CI, 1.25-1.77), which did not correlate with disease duration. Additional analyses on IBD disease severity yielded evidence for a higher risk of rosacea in those with higher UC and CD activity. CONCLUSIONS Our findings provide evidence that patients with IBD may be at increased risk of rosacea (higher in UC), particularly during phases of increased IBD-associated gastrointestinal tract inflammation.
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Yamada A, Arakaki R, Saito M, Tsunematsu T, Kudo Y, Ishimaru N. Role of regulatory T cell in the pathogenesis of inflammatory bowel disease. World J Gastroenterol 2016; 22:2195-205. [PMID: 26900284 PMCID: PMC4734996 DOI: 10.3748/wjg.v22.i7.2195] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 11/11/2015] [Accepted: 12/08/2015] [Indexed: 02/06/2023] Open
Abstract
Regulatory T (Treg) cells play key roles in various immune responses. For example, Treg cells contribute to the complex pathogenesis of inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis during onset or development of that disease. Many animal models of IBD have been used to investigate factors such as pathogenic cytokines, pathogenic bacteria, and T-cell functions, including those of Treg cells. In addition, analyses of patients with IBD facilitate our understanding of the precise mechanism of IBD. This review article focuses on the role of Treg cells and outlines the pathogenesis and therapeutic strategies of IBD based on previous reports.
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Lim SM, Kang GD, Jeong JJ, Choi HS, Kim DH. Neomangiferin modulates the Th17/Treg balance and ameliorates colitis in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:131-140. [PMID: 26926174 DOI: 10.1016/j.phymed.2016.01.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/29/2015] [Accepted: 01/03/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Anemarrhena asphodeloides (Liliaceae family) and Mangifera indica L. (Anacardiaceae family) contain neomangiferin as the main active constituent and have been used to treat inflammation, asthma, and pain. PURPOSE A preliminary study found that neomangiferin inhibited splenic T cell differentiation into Th17 cells and promoted Treg cell production in vitro. Therefore, we examined its anti-colitic effects in vitro and in vivo. METHODS Splenocytes isolated from C57BL/6J mice were treated with neomangiferin. Colitis was either induced in vivo by intrarectal administration of 2,4,6-trinitrobenzene sulfonic acid (TNBS) to C57BL/6J mice or occurred spontaneously in colitis caused by interleukin (IL)-10 knockout at age of 13 weeks. Mice were treated daily with neomangiferin or sulfasalazine. Inflammatory markers, cytokines, enzymes and transcription factors were measured by enzyme-linked immunosorbent assay, immunoblot, and flow cytometry. RESULTS Neomangiferin suppressed retinoic acid receptor-related orphan receptor gamma t (RORγt) and IL-17 expression in IL-6/transforming growth factor β-stimulated Th17 splenocytes and increased IL-10 expression in vitro. Mouse TNBS-induced colon shortening, macroscopic score, and myeloperoxidase activity were inhibited by neomangiferin, which also reduced TNBS-induced activation of nuclear factor-κB and extracellular signal-regulated kinases, as well as expression of inducible nitric oxide synthase and cyclooxygenase-2. In addition, neomangiferin inhibited TNBS-induced expression of tumor necrosis factor-α, IL-17, IL-6, and IL-1β, and increased IL-10 expression. Neomangiferin inhibited TNBS-induced differentiation to Th17 cells and promoted the development of Treg cells. Moreover, in IL-10(-/-) mice, neomangiferin inhibited colonic myeloperoxidase activity, suppressed Th17 cell differentiation, and reduced levels of TNF-α and IL-17. CONCLUSION Neomangiferin may restore the balance between Th17/Treg cells by suppressing IL-17 and RORγt expression and inducing IL-10 and forkhead box P3 expression, thus ameliorating colitis.
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Affiliation(s)
- Su-Min Lim
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, South Korea
| | - Geum-Dan Kang
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, South Korea
| | - Jin-Ju Jeong
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, South Korea
| | - Hyun Sik Choi
- DongWha Pharm Research Institute, 35-71, Topsil-ro, Giheung-gu, Yongin-Shi, Gyeonggi, 46-902 South Korea
| | - Dong-Hyun Kim
- Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, South Korea.
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Shmuel-Galia L, Aychek T, Fink A, Porat Z, Zarmi B, Bernshtein B, Brenner O, Jung S, Shai Y. Neutralization of pro-inflammatory monocytes by targeting TLR2 dimerization ameliorates colitis. EMBO J 2016; 35:685-98. [PMID: 26884587 DOI: 10.15252/embj.201592649] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 01/15/2016] [Indexed: 01/21/2023] Open
Abstract
Monocytes have emerged as critical driving force of acute inflammation. Here, we show that inhibition of Toll-like receptor 2(TLR2) dimerization by a TLR2 transmembrane peptide (TLR2-p) ameliorated DSS-induced colitis by interfering specifically with the activation of Ly6C(+) monocytes without affecting their recruitment to the colon. We report that TLR2-p directly interacts with TLR2 within the membrane, leading to inhibition of TLR2-TLR6/1 assembly induced by natural ligands. This was associated with decreased levels of extracellular signal-regulated kinases (ERK) signaling and reduced secretion of pro-inflammatory cytokines, such as interleukin (IL)-6, IL-23, IL-12, and IL-1β. Altogether, our study provides insights into the essential role of TLR2 dimerization in the activation of pathogenic pro-inflammatory Ly6C(hi) monocytes and suggests that inhibition of this aggregation by TLR2-p might have therapeutic potential in the treatment of acute gut inflammation.
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Affiliation(s)
- Liraz Shmuel-Galia
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
| | - Tegest Aychek
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Avner Fink
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
| | - Ziv Porat
- Department of Biological Services, The Weizmann Institute of Science, Rehovot, Israel
| | - Batya Zarmi
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
| | - Biana Bernshtein
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Ori Brenner
- Department of Veterinary Resources, The Weizmann Institute of Science, Rehovot, Israel
| | - Steffen Jung
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Yechiel Shai
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
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Chidrawar VR. Exploiting the role of various types of ion-channels against chemically induced inflammatory bowel disease in male Wistar rats. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2016. [DOI: 10.1016/s2222-1808(15)60992-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Extracellular ATP mediates inflammatory responses in colitis via P2 × 7 receptor signaling. Sci Rep 2016; 6:19108. [PMID: 26739809 PMCID: PMC4703960 DOI: 10.1038/srep19108] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 12/02/2015] [Indexed: 12/19/2022] Open
Abstract
Extracellular purinergic products, particularly ATP, have recently been implicated to regulate immune cell functions and contribute to aberrant inflammatory responses of immune diseases. However, regulation of immune responses of colitis by extracellular ATP and its main receptor, P2 × 7, remains to be elucidated. In the study, we induced murine colitis by feeding mice with 4% dextran sulfate sodium (DSS), and noted dramatically heightened extracellular ATP levels in colon tissues during the progression of experimental colitis. Blockade of ATP release by carbenoxolone (CBX) treatment, or promoting ATP degradation by ATP diphosphohydrolase (apyrase), decreased extracellular ATP levels in colon tissues, attenuated DSS-induced colitis, whereas inhibition of extracellular ATP degradation by sodium metatungstate (POM-1) exacerbated tissue damage in the mice with colitis. Moreover, treatment with inhibitor of P2 × 7 receptor, A438079, decreased NFκB activation and active caspase-1 expression in lamina propria immune cells, downregulated proinflammatory cytokine production in colon tissues, and attenuated murine colitis. Collectively, these data suggest extracellular ATP participates in regulation of inflammatory responses of experimental colitis, through P2 × 7 receptor and inflammasome and NFκB signaling, which provides potential alternatives to the current clinical approaches to suppress extracellular ATP-mediated immune responsiveness.
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Kang GD, Lim S, Kim DH. Oleanolic acid ameliorates dextran sodium sulfate-induced colitis in mice by restoring the balance of Th17/Treg cells and inhibiting NF-κB signaling pathway. Int Immunopharmacol 2015; 29:393-400. [PMID: 26514300 DOI: 10.1016/j.intimp.2015.10.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 12/13/2022]
Abstract
In a preliminary experiment, it was found that oleanolic acid (OA), which is widely distributed in food and medicinal plants, inhibited interleukin (IL)-6/tumor growth factor beta-induced differentiation of splenic T cells into Th17 cells. Moreover, OA induced the differentiation of splenic T cells into Treg cells. Therefore, we examined the anti-inflammatory effect of OA in mice with dextran sodium sulfate (DSS)-induced colitis. Oral administration of OA significantly inhibited DSS-induced colon shortening, macroscopic score, and myeloperoxidase activity. Treatment with OA inhibited DSS-induced differentiation to Th17 cells and downregulated the expression of RORγt and IL-17 in the lamina propria of colon and Treg cell differentiation and Foxp3 and IL-10 expression were increased. OA treatment increased the DSS-suppressed expression of tight junction proteins such as ZO-1, occludin, and claudin-1 in the colon. Moreover, OA treatment inhibited DSS-induced expression of tumor necrosis factor-α, interleukin (IL)-1β, and IL-17, the activation of NF-κB and mitogen-activated protein kinases, and increased IL-10 expression. OA also inhibited the activation of NF-κB and expression of proinflammatory cytokines in LPS-stimulated peritoneal macrophages. These findings suggest that OA may ameliorate inflammatory diseases such as colitis by inhibiting Th17 cell differentiation and increasing Treg cell differentiation.
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Affiliation(s)
- Geum-Dan Kang
- Department of Life and Nanopharmaceutical Sciences, Department of Pharmacy, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Sumin Lim
- Department of Life and Nanopharmaceutical Sciences, Department of Pharmacy, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Dong-Hyun Kim
- Department of Life and Nanopharmaceutical Sciences, Department of Pharmacy, College of Pharmacy, Kyung Hee University, 1, Hoegi, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
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Actions of probiotics on trinitrobenzenesulfonic acid-induced colitis in rats. BIOMED RESEARCH INTERNATIONAL 2015; 2015:528523. [PMID: 26550572 PMCID: PMC4621330 DOI: 10.1155/2015/528523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/25/2015] [Accepted: 09/27/2015] [Indexed: 12/27/2022]
Abstract
We investigated the actions of probiotics, Streptococcus faecalis 129 BIO 3B (SF3B), in a trinitrobenzenesulfonic acid- (TNBS-) induced colitis model in rats. After TNBS was administered into the colons of rats for induction of colitis, the rats were divided into two groups: one group was given a control diet and the other group was given a diet containing SF3B for 14 days. There were no apparent differences in body weight, diarrhea period, macroscopic colitis score, and colonic weight/length ratio between the control group and SF3B group, suggesting that induction of colitis was not prevented by SF3B. Next, we investigated whether SF3B-containing diet intake affects the restoration of enteric neurotransmissions being damaged during induction of colitis by TNBS using isolated colonic preparations. Recovery of the nitrergic component was greater in the SF3B group than in the control group. A compensatory appearance of nontachykininergic and noncholinergic excitatory components was less in the SF3B group than in the control group. In conclusion, the present study suggests that SF3B-containing diet intake can partially prevent disruptions of enteric neurotransmissions induced after onset of TNBS-induced colitis, suggesting that SF3B has therapeutic potential.
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MRI for Crohn's Disease: Present and Future. BIOMED RESEARCH INTERNATIONAL 2015; 2015:786802. [PMID: 26413543 PMCID: PMC4564596 DOI: 10.1155/2015/786802] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/09/2014] [Accepted: 12/11/2014] [Indexed: 12/18/2022]
Abstract
Crohn's disease (CD) is a chronic inflammatory condition with relapsing-remitting behavior, often causing strictures or penetrating bowel damage. Its lifelong clinical course necessitates frequent assessment of disease activity and complications. Computed tomography (CT) enterography has been used as primary imaging modality; however, the concern for radiation hazard limits its use especially in younger population. Magnetic resonance (MR) imaging has advantages of avoiding radiation exposure, lower incidence of adverse events, ability to obtain dynamic information, and good soft-tissue resolution. MR enterography (MRE) with oral contrast agent has been used as primary MR imaging modality of CD with high sensitivity, specificity, and interobserver agreement. The extent of inflammation as well as transmural ulcers and fibrostenotic diseases can be detected with MRE. Novel MR techniques such as diffusion-weighted MRI (DWI), motility study, PET-MRI, and molecular imaging are currently investigated for further improvement of diagnosis and management of CD. MR spectroscopy is a remarkable molecular imaging tool to analyze metabolic profile of CD with human samples such as plasma, urine, or feces, as well as colonic mucosa itself.
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Delvecchio FR, Vadrucci E, Cavalcanti E, De Santis S, Kunde D, Vacca M, Myers J, Allen F, Bianco G, Huang AY, Monsurro V, Santino A, Chieppa M. Polyphenol administration impairs T-cell proliferation by imprinting a distinct dendritic cell maturational profile. Eur J Immunol 2015; 45:2638-49. [PMID: 26096294 DOI: 10.1002/eji.201545679] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 06/01/2015] [Accepted: 06/15/2015] [Indexed: 12/16/2022]
Abstract
Currently little is known as to how nutritionally derived compounds may affect dendritic cell (DC) maturation and potentially prevent inappropriate inflammatory responses that are characteristic of chronic inflammatory syndromes. Previous observations have demonstrated that two polyphenols quercetin and piperine delivered through reconstituted oil bodies (ROBs-QP) can influence DC maturation in response to LPS leading to a modulated inflammatory response. In the present study, we examined the molecular effects of ROBs-QP exposure on DC differentiation in mice and identified a unique molecular signature in response to LPS administration that potentially modulates DC maturation and activity in inflammatory conditions. Following LPS administration, ROBs-QP-exposed DCs expressed an altered molecular profile as compared with control DCs, including cytokine and chemokine production, chemokine receptor repertoire, and antigen presentation ability. In vivo ROBs-QP administration suppresses antigen-specific T-cell division in the draining lymph nodes resulting from a reduced ability to create stable immunological synapse. Our data demonstrate that polyphenols exposure can drive DCs toward a new anti-inflammatory molecular profile capable of dampening the inflammatory response, highlighting their potential as complementary nutritional approaches in the treatment of chronic inflammatory syndromes.
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Affiliation(s)
| | - Elisa Vadrucci
- IRCCS "de Bellis", Laboratory of Experimental Immunopathology, Castellana Grotte, BA, Italy
| | - Elisabetta Cavalcanti
- IRCCS "de Bellis", Laboratory of Experimental Immunopathology, Castellana Grotte, BA, Italy
| | - Stefania De Santis
- IRCCS "de Bellis", Laboratory of Experimental Immunopathology, Castellana Grotte, BA, Italy
| | - Dale Kunde
- School of Health Science, University of Tasmania, Launceston, Tasmania, Australia
| | - Michele Vacca
- Mario Negri Sud, Laboratory of Lipid Metabolism and Cancer, Santa Maria Imbaro, CH, Italy
| | - Jay Myers
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Frederick Allen
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Giusy Bianco
- IRCCS "de Bellis", Laboratory of Experimental Immunopathology, Castellana Grotte, BA, Italy
| | - Alex Y Huang
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Vladia Monsurro
- Department of Pathology and Diagnostic, University of Verona Medical School, Verona, Italy
| | - Angelo Santino
- CNR, Institute of Science of Food Production, Lecce, Italy
| | - Marcello Chieppa
- IRCCS "de Bellis", Laboratory of Experimental Immunopathology, Castellana Grotte, BA, Italy
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Impact of dextran sulphate sodium-induced colitis on the intestinal transport of the colon carcinogen PhIP. Arch Toxicol 2015; 90:1093-102. [DOI: 10.1007/s00204-015-1546-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 06/03/2015] [Indexed: 12/28/2022]
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Bai JA, Xu GF, Yan LJ, Zeng WW, Ji QQ, Wu JD, Tang QY. SGK1 inhibits cellular apoptosis and promotes proliferation via the MEK/ERK/p53 pathway in colitis. World J Gastroenterol 2015; 21:6180-6193. [PMID: 26034353 PMCID: PMC4445095 DOI: 10.3748/wjg.v21.i20.6180] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/12/2014] [Accepted: 02/12/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the role of serum-and-glucocorticoid-inducible-kinase-1 (SGK1) in colitis and its potential pathological mechanisms.
METHODS: SGK1 expression in mucosal biopsies from patients with active Crohn’s disease (CD) and normal controls was detected by immunohistochemistry. We established an acute colitis model in mice induced by 2,4,6-trinitrobenzene sulfonicacid, and demonstrated the presence of colitis using the disease activity index, the histologic activity index and hematoxylin and eosin staining. The cellular events and potential mechanisms were implemented with small interference RNA and an inhibitor of signaling molecule (i.e., U0126) in intestinal epithelial cells (IECs). The interaction between SGK1 and the signaling molecule was assessed by co-immunoprecipitation.
RESULTS: SGK1 expression was significantly increased in the inflamed epithelia of patients with active CD and TNBS-induced colitis model (0.58 ± 0.055 vs 0.85 ± 0.06, P < 0.01). At the cellular level, silencing of SGK1 by small interference RNA (siSGK1) significantly inhibited the phosphorylation of mitogen-activated protein kinase kinase 1 (MEK1) and the downstream molecule extracellular signal regulated protein kinase (ERK) 1/2, which induced the upregulation of p53 and Bcl-2-associated X protein, mediating the subsequent cellular apoptosis and proliferation in IECs. Cells treated with MEK1 inhibitor (i.e., U0126) before siSGK1 transfection showed a reversal of the siSGK1-induced cellular apoptosis.
CONCLUSION: Our data suggested that SGK1 may protect IECs in colitis from tumor necrosis factor-α-induced apoptosis partly by triggering MEK/ERK activation.
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Tromp D, Christie DRH. Acute and Late Bowel Toxicity in Radiotherapy Patients with Inflammatory Bowel Disease: A Systematic Review. Clin Oncol (R Coll Radiol) 2015; 27:536-41. [PMID: 26021592 DOI: 10.1016/j.clon.2015.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/17/2015] [Accepted: 05/04/2015] [Indexed: 12/13/2022]
Abstract
AIMS Inflammatory bowel disease has traditionally been considered a relative contraindication for radiotherapy due to a perceived increased risk of disease exacerbation and bowel toxicity. The aim of this review was to evaluate the current literature regarding rates of radiotherapy-induced acute and late bowel toxicity in patients with inflammatory bowel disease and to compare these data with those of patients without the disease. MATERIALS AND METHODS An Ovid Medline search was conducted to identify original articles pertaining to the review question. Using the PRISMA convention a total of 442 articles screened, resulting 8 articles which were suitable for inclusion in the review. RESULTS In general, the grading of toxicity was scored using either the Radiation Therapy Oncology Group or Common Terminology Criteria for Adverse Events scoring systems. It was found that acute bowel toxicity of ≥ grade 3 occurred in 20% of patients receiving external beam radiotherapy (EBRT) and in 7% of patients receiving brachytherapy. Late bowel toxicity ≥ grade 3 occurred in 15% of EBRT patients and in 5% of patients receiving brachytherapy. Brachytherapy was shown to have similar rates of toxicity and EBRT produced a moderate increase in both acute and late toxicity when compared with individuals without inflammatory bowel disease. CONCLUSION In view of these results, we suggest that brachytherapy should be considered as a suitable treatment option for treating pelvic malignancy in patients with inflammatory bowel disease, whereas EBRT should be used with caution.
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Affiliation(s)
- D Tromp
- Gold Coast University Hospital, Southport, Queensland, Australia; Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - D R H Christie
- Genesis CancerCare Queensland, Tugun, Queensland, Australia; Bond University, Robina, Queensland, Australia
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Pathak S, Grillo AR, Scarpa M, Brun P, D'Incà R, Nai L, Banerjee A, Cavallo D, Barzon L, Palù G, Sturniolo GC, Buda A, Castagliuolo I. MiR-155 modulates the inflammatory phenotype of intestinal myofibroblasts by targeting SOCS1 in ulcerative colitis. Exp Mol Med 2015; 47:e164. [PMID: 25998827 PMCID: PMC4454995 DOI: 10.1038/emm.2015.21] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 12/30/2014] [Accepted: 01/12/2015] [Indexed: 02/06/2023] Open
Abstract
Abnormal levels of microRNA (miR)-155, which regulate inflammation and immune responses, have been demonstrated in the colonic mucosa of patients with inflammatory bowel diseases (IBD), although its role in disease pathophysiology is unknown. We investigated the role of miR-155 in the acquisition and maintenance of an activated phenotype by intestinal myofibroblasts (IMF), a key cell population contributing to mucosal damage in IBD. IMF were isolated from colonic biopsies of healthy controls, ulcerative colitis (UC) and Crohn's disease (CD) patients. MiR-155 in IMF was quantified by quantitative reverse transcription-PCR in basal condition and following exposure to TNF-α, interleukin (IL)-1β, lipopolysaccharide (LPS) or TGF-β1. The effects of miR-155 mimic or inhibitor transfection on cytokine release and suppressor of cytokine signaling 1 (SOCS1) expression were assessed by enzyme-linked immunosorbent assay and western blot, respectively. Regulation of the target gene SOCS1 expression by miR-155 was assessed using luciferase reporter construct. We found that miR-155 was significantly upregulated in UC as compared with control- and CD-derived IMF. Moreover, TNF-α and LPS, but not TGF-β1 and IL-1β, significantly increased miR-155 expression in IMF. Ectopic expression of miR-155 in control IMF augmented cytokines release, whereas it downregulated SOCS1 expression. MiR-155 knockdown in UC-IMF reduced cytokine production and enhanced SOCS1 expression. Luciferase reporter assay demonstrated that miR-155 directly targets SOCS1. Moreover, silencing of SOCS1 in control IMF significantly increased IL-6 and IL-8 release. In all, our data suggest that inflammatory mediators induce miR-155 expression in IMF of patients with UC. By downregulating the expression of SOCS1, miR-155 wires IMF inflammatory phenotype.
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Affiliation(s)
- Surajit Pathak
- 1] Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy [2] Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Alessia Rosaria Grillo
- 1] Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy [2] Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Melania Scarpa
- Oncological Surgery Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - Paola Brun
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Renata D'Incà
- Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy
| | - Laura Nai
- 1] Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy [2] Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Antara Banerjee
- Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy
| | - Donatella Cavallo
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Luisa Barzon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Giorgio Palù
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Giacomo Carlo Sturniolo
- Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy
| | - Andrea Buda
- Department of Surgery Oncology and Gastroenterology DISCOG, University of Padova, Padova, Italy
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Klinker MW, Wei CH. Mesenchymal stem cells in the treatment of inflammatory and autoimmune diseases in experimental animal models. World J Stem Cells 2015; 7:556-567. [PMID: 25914763 PMCID: PMC4404391 DOI: 10.4252/wjsc.v7.i3.556] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/07/2014] [Accepted: 01/12/2015] [Indexed: 02/07/2023] Open
Abstract
Multipotent mesenchymal stromal cells [also known as mesenchymal stem cells (MSCs)] are currently being studied as a cell-based treatment for inflammatory disorders. Experimental animal models of human immune-mediated diseases have been instrumental in establishing their immunosuppressive properties. In this review, we summarize recent studies examining the effectiveness of MSCs as immunotherapy in several widely-studied animal models, including type 1 diabetes, experimental autoimmune arthritis, experimental autoimmune encephalomyelitis, inflammatory bowel disease, graft-vs-host disease, and systemic lupus erythematosus. In addition, we discuss mechanisms identified by which MSCs mediate immune suppression in specific disease models, and potential sources of functional variability of MSCs between studies.
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The probiotic mixture IRT5 ameliorates age-dependent colitis in rats. Int Immunopharmacol 2015; 26:416-22. [PMID: 25907245 DOI: 10.1016/j.intimp.2015.04.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 03/20/2015] [Accepted: 04/04/2015] [Indexed: 01/20/2023]
Abstract
To investigate the anti-inflammatory effect of probiotics, we orally administered IRT5 (1×10(9)CFU/rat) for 8 weeks to aged (16 months-old) Fischer 344 rats, and measured parameters of colitis. The expression levels of the inflammatory markers' inducible NO synthase (iNOS), cyclooxygenase-2 (COX2), tumor necrosis factor (TNF)-α, and interleukin (IL)-1β were higher in the colons of normal aged rats (18 months-old) than in the colons of normal young rats (6 months-old). Treatment with IRT5 suppressed the age-associated increased expression of iNOS, COX2, TNF-α, and IL-1β, and activation of NF-κB and mitogen-activated protein kinases. In a similar manner, the expression of tight junction proteins in the colon of normal aged rats was suppressed more potently than in normal young rats, and treatment of aged rats with IRT5 decreased the age-dependent suppression of tight junction proteins ZO-1, occludin, and claudin-1. Treatment with IRT5 suppressed age-associated increases in expressions of senescence markers p16 and p53 in the colon of aged rats, but increased age-suppressed expression of SIRT1. However, treatment with IRT5 inhibited age-associated increased myeloperoxidase activity in the colon. In addition, treatment with IRT5 lowered the levels of LPS in intestinal fluid and blood of aged rats, as well as the reduced concentrations of reactive oxygen species, malondialdehyde, and C-reactive protein in the blood. These findings suggest that IRT5 treatment may suppress age-dependent colitis by inhibiting gut microbiota LPS production.
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83
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Cayci M, Bostanci EB, Turhan N, Karaman K, Dalgic T, Ozer I, Ercan M, Ulas M, Akoglu M. The analysis of clinico-pathologic characteristics in patients who underwent surgery due to stricturing and non-perineal fistulizing forms of Crohn's disease: a retrospective cohort study. Int J Surg 2015; 15:49-54. [PMID: 25647540 DOI: 10.1016/j.ijsu.2015.01.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 01/25/2015] [Accepted: 01/29/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND The diagnosis of Crohn's disease is based mainly on the patient's history and clinical examination and supported by serologic, radiologic, endoscopic, and histologic findings. AIMS The main purpose of the present study was to evaluate in a retrospective manner the clinico-pathological characteristics of patients who underwent surgery due to stricturing or non perineal fistulizing Crohn's disease. MATERIAL AND METHODS Between January 2007 and June 2012, 75 patients who were operated on for stricturing and non-perineal fistulizing forms of Crohn's disease were analyzed according to their clinico-pathological characteristics. RESULTS The L3 localization (Montreal Classification) was detected significantly more often in the non-perineal fistulizing group than in the stricturing group (P < 0.03). Wound infection (18 patient, 24%) was the most commonly observed postoperative complication, followed by postoperative ileus (5 patients, 6.7%) and intraabdominal abscess (4 patients, 5.2%). The distribution of postoperative complications according to the two groups was not significantly different (P = 0.772). Submucosal fibrosis, ulcers and transmural inflammation were the three most common histopathological signs in resected specimens from both groups. Pseudopolyps, microabscess, granuloma, mononuclear inflammation and deep fissures were significantly far more frequent in the non perineal fistulizing group when compared to the stricturing group (P < 0.05). On the other hand, superficial ulcers were significantly more frequent in the stricturing group (P = 0.007). CONCLUSION No specific clinical feature was found to differentiate patients with the stricturing form of Crohn's disease from the fistulizing form. However, histopathological analysis of the resected specimens revealed significant differences in some parameters between the two disease forms.
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Affiliation(s)
- Murat Cayci
- Sevket Yilmaz Teaching and Research Hospital, Department of Gastroenterological Surgery, Bursa, Turkey.
| | - Erdal Birol Bostanci
- Sakarya University, Faculty of Medicine, Department of General Surgery, Sakarya, Turkey
| | - Nesrin Turhan
- Turkiye Yuksek Ihtisas Teaching and Research Hospital, Department of Pathology, Ankara, Turkey
| | - Kerem Karaman
- Sakarya University, Faculty of Medicine, Department of General Surgery, Sakarya, Turkey
| | - Tahsin Dalgic
- Turkiye Yuksek Ihtisas Teaching and Research Hospital, Department of Gastroenterological Surgery, Ankara, Turkey
| | - Ilter Ozer
- Turkiye Yuksek Ihtisas Teaching and Research Hospital, Department of Gastroenterological Surgery, Ankara, Turkey
| | - Metin Ercan
- Sakarya University, Faculty of Medicine, Department of General Surgery, Sakarya, Turkey
| | - Murat Ulas
- Turkiye Yuksek Ihtisas Teaching and Research Hospital, Department of Gastroenterological Surgery, Ankara, Turkey
| | - Musa Akoglu
- Sakarya University, Faculty of Medicine, Department of General Surgery, Sakarya, Turkey
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Abstract
In eukaryotic cells, protein folding and modification in the endoplasmic reticulum (ER) is highly sensitive to disturbances of homeostasis. The accumulation of unfolded and misfolded proteins in the ER lumen, termed ER stress, activates intracellular signaling pathways to resolve the protein-folding defect. This unfolded protein response (UPR) increases the capacity of ER protein folding, reduces global protein synthesis, and activates ER-associated protein degradation. If ER stress is too severe or chronic, or the UPR is compromised and not able to restore ER protein-folding homeostasis, numerous apoptotic signaling pathways are activated. Preclinical and clinical studies in the past decade indicate that ER stress and the UPR have a significant impact on the pathogenesis of inflammatory bowel disease. Paneth and goblet cells, 2 epithelial cell populations in the gut, rely on a robust ER function for protein folding and secretion. Several immune cells are orchestrated by ER stress and the UPR for differentiation, activation, migration, and survival. In addition, a variety of exogenous and endogenous molecules in the intestinal lumen affect ER function, making ER stress and the UPR relevant cellular signals in intestinal homeostasis. Recent studies demonstrated that unresolved ER stress and/or dysregulated UPR may cause inflammatory bowel disease by inducing epithelial cell death, impairing mucosal barrier function, and activating proinflammatory response in the gut. With our increased understanding of ER stress in inflammatory bowel disease pathogenesis, it is now possible to develop novel therapies to improve ER protein-folding homeostasis and target-specific UPR pathways in cells residing in the intestinal mucosa.
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85
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Endoplasmic reticulum stress in intestinal epithelial cell function and inflammatory bowel disease. Gastroenterol Res Pract 2015; 2015:328791. [PMID: 25755668 PMCID: PMC4338396 DOI: 10.1155/2015/328791] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 12/11/2022] Open
Abstract
In eukaryotic cells, perturbation of protein folding homeostasis in the endoplasmic reticulum (ER) causes accumulation of unfolded and misfolded proteins in the ER lumen, which activates intracellular signaling pathways termed the unfolded protein response (UPR). Recent studies have linked ER stress and the UPR to inflammatory bowel disease (IBD). The microenvironment of the ER is affected by a myriad of intestinal luminal molecules, implicating ER stress and the UPR in proper maintenance of intestinal homeostasis. Several intestinal cell populations, including Paneth and goblet cells, require robust ER function for protein folding, maturation, and secretion. Prolonged ER stress and impaired UPR signaling may cause IBD through: (1) induction of intestinal epithelial cell apoptosis, (2) disruption of mucosal barrier function, and (3) induction of the proinflammatory response in the gut. Based on our increased understanding of ER stress in IBD, new pharmacological approaches can be developed to improve intestinal homeostasis by targeting ER protein-folding in the intestinal epithelial cells (IECs).
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Cheng J, Zhou ZW, Sheng HP, He LJ, Fan XW, He ZX, Sun T, Zhang X, Zhao RJ, Gu L, Cao C, Zhou SF. An evidence-based update on the pharmacological activities and possible molecular targets of Lycium barbarum polysaccharides. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 9:33-78. [PMID: 25552899 PMCID: PMC4277126 DOI: 10.2147/dddt.s72892] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Lycium barbarum berries, also named wolfberry, Fructus lycii, and Goji berries, have been used in the People’s Republic of China and other Asian countries for more than 2,000 years as a traditional medicinal herb and food supplement. L. barbarum polysaccharides (LBPs) are the primary active components of L. barbarum berries and have been reported to possess a wide array of pharmacological activities. Herein, we update our knowledge on the main pharmacological activities and possible molecular targets of LBPs. Several clinical studies in healthy subjects show that consumption of wolfberry juice improves general wellbeing and immune functions. LBPs are reported to have antioxidative and antiaging properties in different models. LBPs show antitumor activities against various types of cancer cells and inhibit tumor growth in nude mice through induction of apoptosis and cell cycle arrest. LBPs may potentiate the efficacy of lymphokine activated killer/interleukin-2 combination therapy in cancer patients. LBPs exhibit significant hypoglycemic effects and insulin-sensitizing activity by increasing glucose metabolism and insulin secretion and promoting pancreatic β-cell proliferation. They protect retinal ganglion cells in experimental models of glaucoma. LBPs protect the liver from injuries due to exposure to toxic chemicals or other insults. They also show potent immunoenhancing activities in vitro and in vivo. Furthermore, LBPs protect against neuronal injury and loss induced by β-amyloid peptide, glutamate excitotoxicity, ischemic/reperfusion, and other neurotoxic insults. LBPs ameliorate the symptoms of mice with Alzheimer’s disease and enhance neurogenesis in the hippocampus and subventricular zone, improving learning and memory abilities. They reduce irradiation- or chemotherapy-induced organ toxicities. LBPs are beneficial to male reproduction by increasing the quality, quantity, and motility of sperm, improving sexual performance, and protecting the testis against toxic insults. Moreover, LBPs exhibit hypolipidemic, cardioprotective, antiviral, and antiinflammatory activities. There is increasing evidence from preclinical and clinical studies supporting the therapeutic and health-promoting effects of LBPs, but further mechanistic and clinical studies are warranted to establish the dose–response relationships and safety profiles of LBPs.
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Affiliation(s)
- Jiang Cheng
- Department of Neurology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China ; Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Zhi-Wei Zhou
- Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Hui-Ping Sheng
- Department of Infectious Diseases, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Lan-Jie He
- Department of Endocrinology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Xue-Wen Fan
- Department of Neurology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Zhi-Xu He
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guiyang Medical University, Guiyang, Guizhou, People's Republic of China
| | - Tao Sun
- Key Laboratory of Craniocerebral Diseases of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Ruan Jin Zhao
- Center for Traditional Chinese Medicine, Sarasota, FL, USA
| | - Ling Gu
- School of Biology and Chemistry, University of Pu'er, Pu'er, Yunnan, People's Republic of China
| | - Chuanhai Cao
- Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Shu-Feng Zhou
- Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guiyang Medical University, Guiyang, Guizhou, People's Republic of China
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Pedersen J, LaCasse EC, Seidelin JB, Coskun M, Nielsen OH. Inhibitors of apoptosis (IAPs) regulate intestinal immunity and inflammatory bowel disease (IBD) inflammation. Trends Mol Med 2014; 20:652-65. [PMID: 25282548 DOI: 10.1016/j.molmed.2014.09.006] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/04/2014] [Accepted: 09/08/2014] [Indexed: 12/12/2022]
Abstract
The inhibitor of apoptosis (IAP) family members, notably cIAP1, cIAP2, and XIAP, are critical and universal regulators of tumor necrosis factor (TNF) mediated survival, inflammatory, and death signaling pathways. Furthermore, IAPs mediate the signaling of nucleotide-binding oligomerization domain (NOD)1/NOD2 and other intracellular NOD-like receptors in response to bacterial pathogens. These pathways are important to the pathogenesis and treatment of inflammatory bowel disease (IBD). Inactivating mutations in the X-chromosome-linked IAP (XIAP) gene causes an immunodeficiency syndrome, X-linked lymphoproliferative disease type 2 (XLP2), in which 20% of patients develop severe intestinal inflammation. In addition, 4% of males with early-onset IBD also have inactivating mutations in XIAP. Therefore, the IAPs play a greater role in gut homeostasis, immunity and IBD development than previously suspected, and may have therapeutic potential.
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Affiliation(s)
- Jannie Pedersen
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
| | - Eric C LaCasse
- Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, Ottawa, K1H 8L1, Canada.
| | - Jakob B Seidelin
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
| | - Mehmet Coskun
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
| | - Ole H Nielsen
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
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Corridoni D, Arseneau KO, Cifone MG, Cominelli F. The dual role of nod-like receptors in mucosal innate immunity and chronic intestinal inflammation. Front Immunol 2014; 5:317. [PMID: 25071778 PMCID: PMC4090755 DOI: 10.3389/fimmu.2014.00317] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 06/24/2014] [Indexed: 01/11/2023] Open
Abstract
Nucleotide-binding and oligomerization domain NOD-like receptors (NLRs) are highly conserved cytosolic pattern recognition receptors that play, in combination with toll-like receptors, a critical role in innate immunity and inflammation. These proteins are characterized by a central oligomerization domain termed nucleotide-binding domain, and a protein interaction domain containing leucine-rich repeats. Some NLRs, including NOD1 and NOD2, sense the cytosolic presence of conserved bacterial molecular signatures and drive the activation of mitogen-activated protein kinase and the transcription factor NF-κB. A different set of NLRs induces caspase-1 activation through the assembly of large protein complexes known as inflammasomes. Activation of NLR proteins results in secretion of pro-inflammatory cytokines and subsequent inflammatory responses. The critical role of NLRs in innate immunity is underscored by the fact that polymorphisms within their genes are implicated in the development of several immune-mediated diseases, including inflammatory bowel disease. Over the past few years, the role of NLRs in intestinal homeostasis has been highlighted, however the mechanism by which dysfunction in these proteins leads to aberrant inflammation is still the focus of much investigation. The purpose of this review is to systematically evaluate the function of NLRs in mucosal innate immunity and understand how genetic or functional alterations in these components can lead to the disruption of intestinal homeostasis, and the subsequent development of chronic inflammation.
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Affiliation(s)
- Daniele Corridoni
- Department of Medicine, Case Western Reserve University , Cleveland, OH , USA ; Digestive Health Research Center, Case Western Reserve University , Cleveland, OH , USA
| | - Kristen O Arseneau
- Department of Medicine, Case Western Reserve University , Cleveland, OH , USA ; Digestive Health Research Center, Case Western Reserve University , Cleveland, OH , USA
| | - Maria Grazia Cifone
- Department of Life, Health and Environmental Sciences, University of L'Aquila , L'Aquila , Italy
| | - Fabio Cominelli
- Department of Medicine, Case Western Reserve University , Cleveland, OH , USA ; Digestive Health Research Center, Case Western Reserve University , Cleveland, OH , USA
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