1
|
Speciale A, Molonia MS, Muscarà C, Cristani M, Salamone FL, Saija A, Cimino F. An overview on the cellular mechanisms of anthocyanins in maintaining intestinal integrity and function. Fitoterapia 2024; 175:105953. [PMID: 38588905 DOI: 10.1016/j.fitote.2024.105953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/10/2024]
Abstract
Structural and functional changes of the intestinal barrier, as a consequence of a number of (epi)genetic and environmental causes, have a main role in penetrations of pathogens and toxic agents, and lead to the development of inflammation-related pathological conditions, not only at the level of the GI tract but also in other extra-digestive tissues and organs. Anthocyanins (ACNs), a subclass of polyphenols belonging to the flavonoid group, are well known for their health-promoting properties and are widely distributed in the human diet. There is large evidence about the correlation between the human intake of ACN-rich products and a reduction of intestinal inflammation and dysfunction. Our review describes the more recent advances in the knowledge of cellular and molecular mechanisms through which ACNs can modulate the main mechanisms involved in intestinal dysfunction and inflammation, in particular the inhibition of the NF-κB, JNK, MAPK, STAT3, and TLR4 proinflammatory pathways, the upregulation of the Nrf2 transcription factor and the expression of tight junction proteins and mucins.
Collapse
Affiliation(s)
- Antonio Speciale
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| | - Maria Sofia Molonia
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy; "Prof. Antonio Imbesi" Foundation, University of Messina, Messina 98100, Italy.
| | - Claudia Muscarà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| | - Mariateresa Cristani
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| | - Federica Lina Salamone
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| | - Antonella Saija
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| | - Francesco Cimino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, Messina 98166, Italy.
| |
Collapse
|
2
|
Mukherjee T, Kumar N, Chawla M, Philpott DJ, Basak S. The NF-κB signaling system in the immunopathogenesis of inflammatory bowel disease. Sci Signal 2024; 17:eadh1641. [PMID: 38194476 DOI: 10.1126/scisignal.adh1641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 12/11/2023] [Indexed: 01/11/2024]
Abstract
Inflammatory bowel disease (IBD) is an idiopathic, chronic condition characterized by episodes of inflammation in the gastrointestinal tract. The nuclear factor κB (NF-κB) system describes a family of dimeric transcription factors. Canonical NF-κB signaling is stimulated by and enhances inflammation, whereas noncanonical NF-κB signaling contributes to immune organogenesis. Dysregulation of NF-κB factors drives various inflammatory pathologies, including IBD. Signals from many immune sensors activate NF-κB subunits in the intestine, which maintain an equilibrium between local microbiota and host responses. Genetic association studies of patients with IBD and preclinical mouse models confirm the importance of the NF-κB system in host defense in the gut. Other studies have investigated the roles of these factors in intestinal barrier function and in inflammatory gut pathologies associated with IBD. NF-κB signaling modulates innate and adaptive immune responses and the production of immunoregulatory proteins, anti-inflammatory cytokines, antimicrobial peptides, and other tolerogenic factors in the intestine. Furthermore, genetic studies have revealed critical cell type-specific roles for NF-κB proteins in intestinal immune homeostasis, inflammation, and restitution that contribute to the etiopathology of IBD-associated manifestations. Here, we summarize our knowledge of the roles of these NF-κB pathways, which are activated in different intestinal cell types by specific ligands, and their cross-talk, in fueling aberrant intestinal inflammation. We argue that an in-depth understanding of aberrant immune signaling mechanisms may hold the key to identifying predictive or prognostic biomarkers and developing better therapeutics against inflammatory gut pathologies.
Collapse
Affiliation(s)
- Tapas Mukherjee
- Systems Immunology Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Naveen Kumar
- Systems Immunology Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Meenakshi Chawla
- Systems Immunology Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Soumen Basak
- Systems Immunology Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| |
Collapse
|
3
|
Vlk AM, Prantner D, Shirey KA, Perkins DJ, Buzza MS, Thumbigere-Math V, Keegan AD, Vogel SN. M2a macrophages facilitate resolution of chemically-induced colitis in TLR4-SNP mice. mBio 2023; 14:e0120823. [PMID: 37768050 PMCID: PMC10653841 DOI: 10.1128/mbio.01208-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/18/2023] [Indexed: 09/29/2023] Open
Abstract
IMPORTANCE Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, impacts millions of individuals worldwide and severely impairs the quality of life for patients. Dysregulation of innate immune signaling pathways reduces barrier function and exacerbates disease progression. Macrophage (Mφ) signaling pathways are potential targets for IBD therapies. While multiple treatments are available for IBD, (i) not all patients respond, (ii) responses may diminish over time, and (iii) treatments often have undesirable side effects. Genetic studies have shown that the inheritance of two co-segregating SNPs expressed in the innate immune receptor, TLR4, is associated with human IBD. Mice expressing homologous SNPs ("TLR4-SNP" mice) exhibited more severe colitis than WT mice in a DSS-induced colonic inflammation/repair model. We identified a critical role for M2a "tissue repair" Mφ in the resolution of colitis. Our findings provide insight into potential development of novel therapies targeting Mφ signaling pathways that aim to alleviate the debilitating symptoms experienced by individuals with IBD.
Collapse
Affiliation(s)
- Alexandra M. Vlk
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Daniel Prantner
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kari Ann Shirey
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Darren J. Perkins
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- University of Maryland Marlene & Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA
| | - Marguerite S. Buzza
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Vivek Thumbigere-Math
- Division of Periodontics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Achsah D. Keegan
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Stefanie N. Vogel
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- University of Maryland Marlene & Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA
| |
Collapse
|
4
|
Caliendo G, D'Elia G, Makker J, Passariello L, Albanese L, Molinari AM, Vietri MT. Biological, genetic and epigenetic markers in ulcerative colitis. Adv Med Sci 2023; 68:386-395. [PMID: 37813048 DOI: 10.1016/j.advms.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 04/15/2023] [Accepted: 09/18/2023] [Indexed: 10/11/2023]
Abstract
In this review, we have summarized the existing knowledge of ulcerative colitis (UC) markers based on current literature, specifically, the roles of potential new biomarkers, such as circulating, fecal, genetic, and epigenetic alterations, in UC onset, disease activity, and in therapy response. UC is a complex multifactorial inflammatory disease. There are many invasive and non-invasive diagnostic methods in UC, including several laboratory markers which are employed in diagnosis and disease assessment; however, colonoscopy remains the most widely used method. Common laboratory abnormalities currently used in the clinical practice include inflammation-induced alterations, serum autoantibodies, and antibodies against bacterial antigens. Other new serum and fecal biomarkers are supportive in diagnosis and monitoring disease activity and therapy response; and potential salivary markers are currently being evaluated as well. Several UC-related genetic and epigenetic alterations are implied in its pathogenesis and therapeutic response. Moreover, the use of artificial intelligence in the integration of laboratory biomarkers and big data could potentially be useful in clinical translation and precision medicine in UC management.
Collapse
Affiliation(s)
- Gemma Caliendo
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giovanna D'Elia
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Jasmine Makker
- Department of GKT School of Medical Education, King's College London, London, UK
| | - Luana Passariello
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Luisa Albanese
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anna Maria Molinari
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy; Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Teresa Vietri
- Unity of Clinical and Molecular Pathology, AOU University of Campania "Luigi Vanvitelli", Naples, Italy; Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy.
| |
Collapse
|
5
|
Ge Y, Huang M, Yao YM. Efferocytosis and Its Role in Inflammatory Disorders. Front Cell Dev Biol 2022; 10:839248. [PMID: 35281078 PMCID: PMC8913510 DOI: 10.3389/fcell.2022.839248] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 02/10/2022] [Indexed: 12/18/2022] Open
Abstract
Efferocytosis is the effective clearance of apoptotic cells by professional and non-professional phagocytes. The process is mechanically different from other forms of phagocytosis and involves the localization, binding, internalization, and degradation of apoptotic cells. Defective efferocytosis has been demonstrated to associate with the pathogenesis of various inflammatory disorders. In the current review, we summarize recent findings with regard to efferocytosis networks and discuss the relationship between efferocytosis and different immune cell populations, as well as describe how efferocytosis helps resolve inflammatory response and modulate immune balance. Our knowledge so far about efferocytosis suggests that it may be a useful target in the treatment of numerous inflammatory diseases.
Collapse
Affiliation(s)
- Yun Ge
- Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Man Huang
- Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
- *Correspondence: Yong-ming Yao, ; Man Huang,
| | - Yong-ming Yao
- Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing, China
- *Correspondence: Yong-ming Yao, ; Man Huang,
| |
Collapse
|
6
|
Meng L, Song Z, Liu A, Dahmen U, Yang X, Fang H. Effects of Lipopolysaccharide-Binding Protein (LBP) Single Nucleotide Polymorphism (SNP) in Infections, Inflammatory Diseases, Metabolic Disorders and Cancers. Front Immunol 2021; 12:681810. [PMID: 34295331 PMCID: PMC8290185 DOI: 10.3389/fimmu.2021.681810] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/08/2021] [Indexed: 01/11/2023] Open
Abstract
Inflammation, which is induced by the immune response, is recognized as the driving factor in many diseases, including infections and inflammatory diseases, metabolic disorders and cancers. Genetic variations in pivotal genes associated with the immune response, particularly single nucleotide polymorphisms (SNPs), may account for predisposition and clinical outcome of diseases. Lipopolysaccharide (LPS)-binding protein (LBP) functions as an enhancer of the host response to LPS, the main component of the outer membrane of gram-native bacteria. Given the crucial role of LBP in inflammation, we will review the impact of SNPs in the LBP gene on infections and inflammatory diseases, metabolic disorders and cancers.
Collapse
Affiliation(s)
- Leilei Meng
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Zichen Song
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Anding Liu
- Experimental Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Uta Dahmen
- Experimental Transplantation Surgery, Department of General, Visceral and Vascular Surgery, Friedrich-Schiller-University Jena, Jena, Germany
| | - Xiao Yang
- Experimental Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haoshu Fang
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| |
Collapse
|
7
|
Reilly F, Burke JP, Lennon G, Kay EW, McNamara DA, Cullen G, Doherty GA, Mulcahy H, Martin S, Winter DC, Sheahan K, O'Connell PR. A case-control study examining the association of smad7 and TLR single nucleotide polymorphisms on the risk of colorectal cancer in ulcerative colitis. Colorectal Dis 2021; 23:1043-1048. [PMID: 33512737 DOI: 10.1111/codi.15550] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 01/01/2023]
Abstract
AIM Ulcerative colitis (UC) is characterized by chronic mucosal inflammation and an increased risk of colorectal cancer. smad7, TLR2 and TLR4 modulate intestinal inflammation and their polymorphisms affect the risk of development of sporadic colorectal cancer. The aim of the current study was to examine the association between single nucleotide polymorphisms (SNPs) in smad7, TLR2 and TLR4 and the development of colorectal cancer in patients with UC. METHOD DNA was extracted from formalin-fixed, paraffin-embedded tissue from 90 patients with UC who had undergone panproctocolectomy between 1985 and 2013 (30 with UC-associated colorectal cancer and 60 control UC patients). Control cases were matched 2:1 for age at diagnosis of colitis, duration of disease and gender. Genotyping was performed for the smad7 rs4464148, rs11874392, rs12953717 and rs4939827 SNPs, the TLR2 rs5743704 and rs5743708 SNPs and the TLR4 rs4986790 and rs4986791 SNPs. RESULTS Sixty three of the 90 patients (70%) were men and the mean age at diagnosis of UC was 38.6 ± 1.6 years. The mean time to the diagnosis of UC-associated colorectal cancer was 13.5 ± 1.9 years. The 5-year recurrence-free and cancer-specific survival rates were 76% and 88%, respectively. All eight SNPs were in Hardy-Weinberg equilibrium. None of the eight SNPs assessed in smad7, TLR2 or TLR4 were associated with the development of UC-associated colorectal cancer at an allelic or genotypic level. CONCLUSIONS These data do not support an association between polymorphisms in smad7, TLR2 or TLR4 and the development of UC-associated colorectal cancer.
Collapse
Affiliation(s)
- Frank Reilly
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - John P Burke
- Department of Colorectal Surgery, Beaumont Hospital, Dublin, Ireland
| | - Grainne Lennon
- School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Elaine W Kay
- Department of Pathology, Beaumont Hospital, Dublin, Ireland
| | | | - Garret Cullen
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - Glen A Doherty
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - Hugh Mulcahy
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - Sean Martin
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - Desmond C Winter
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | - Kieran Sheahan
- Centre for Colorectal Disease, St. Vincent's University Hospital, Dublin, Ireland
| | | |
Collapse
|
8
|
Mukherjee S, Huda S, Sinha Babu SP. Toll-like receptor polymorphism in host immune response to infectious diseases: A review. Scand J Immunol 2019; 90:e12771. [PMID: 31054156 DOI: 10.1111/sji.12771] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 04/20/2019] [Accepted: 04/25/2019] [Indexed: 12/15/2022]
Abstract
Immunopolymorphism is considered as an important aspect behind the resistance or susceptibility of the host to an infectious disease. Over the years, researchers have explored many genetic factors for their role in immune surveillance against infectious diseases. Polymorphic characters in the gene encoding Toll-like receptors (TLRs) play profound roles in inducing differential immune responses by the host against parasitic infections. Protein(s) encoded by TLR gene(s) are immensely important due to their ability of recognizing different types of pathogen associated molecular patterns (PAMPs). This study reviews the polymorphic residues present in the nucleotide or in the amino acid sequence of TLRs and their influence on alteration of inflammatory signalling pathways promoting either susceptibility or resistance to major infectious diseases, including tuberculosis, leishmaniasis, malaria and filariasis. Population-based studies exploring TLR polymorphisms in humans are primarily emphasized to discuss the association of the polymorphic residues with the occurrence and epidemiology of the mentioned infectious diseases. Principal polymorphic residues in TLRs influencing immunity to infection are mostly single nucleotide polymorphisms (SNPs). I602S (TLR1), R677W (TLR2), P554S (TLR3), D299G (TLR4), F616L (TLR5), S249P (TLR6), Q11L (TLR7), M1V (TLR8), G1174A (TLR9) and G1031T (TLR10) are presented as the major influential SNPs in shaping immunity to pathogenic infections. The contribution of these SNPs in the structure-function relationship of TLRs is yet not clear. Therefore, molecular studies on such polymorphisms can improve our understanding on the genetic basis of the immune response and pave the way for therapeutic intervention in a more feasible way.
Collapse
Affiliation(s)
| | - Sahel Huda
- Department of Zoology (Centre for Advanced Studies), Visva-Bharati University, Santiniketan, India
| | - Santi P Sinha Babu
- Department of Zoology (Centre for Advanced Studies), Visva-Bharati University, Santiniketan, India
| |
Collapse
|
9
|
Arya RP, Mishra N, Biswas K, Arankalle VA. Association of Toll-like receptor 4 polymorphism with hepatitis E virus-infected Indian patients. J Viral Hepat 2018; 25:1617-1623. [PMID: 30112862 DOI: 10.1111/jvh.12980] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 12/09/2022]
Abstract
Hepatitis E infection caused by hepatitis E virus (HEV), a major public health concern in developing countries, is responsible for sporadic and epidemic acute viral hepatitis in adults. Pathogenesis of hepatitis E infection is poorly understood. Toll-like receptors (TLRs) are the key players of innate immunity recognize pathogen-associated molecular patterns (PAMPs). Previously, we found higher TLR4 expression (at protein and gene level) with impaired cytokine response upon stimulus of PBMCs with LPS in HEV-infected patients. In view of the earlier observations of the association of polymorphisms in TLR4 genes (A299G, C399T) with liver diseases, we investigated TLR4 polymorphisms in HEV-infected patients. We observed the significant association of TLR4-399CC and CT alleles with hepatitis E (both subclinical and acute patients). Carrier frequency of TLR4-399 CT was lower in patients' categories in comparison with the controls. Higher frequency of allele TLR4-399C significantly correlated with disease progression. Acute hepatitis E patients showed the higher frequency of CG and TA haplotypes, while the rare haplotype (TG) was more frequent in controls. The other single nucleotide polymorphism (SNP) at TLR4-299 (A>G) did not show any difference. We report here for the first time the association of TLR4 polymorphism with hepatitis E and suggest that TLR 4 hyporesponsiveness during HEV infection might be related to its polymorphism.
Collapse
Affiliation(s)
- Ravi P Arya
- ICMR Consultant and Scientist G, National Institute of Virology, Pune, India
| | - Nischay Mishra
- ICMR Consultant and Scientist G, National Institute of Virology, Pune, India
| | - Kakali Biswas
- ICMR Consultant and Scientist G, National Institute of Virology, Pune, India
| | - Vidya A Arankalle
- ICMR Consultant and Scientist G, National Institute of Virology, Pune, India
| |
Collapse
|
10
|
Fu Z, Shen Y, Lin L, Chen Y, Li Y, Que R. Association between Toll-Like Receptor 4 T399I Gene Polymorphism and the Susceptibility to Crohn's Disease: A Meta-Analysis of Case-Control Studies. Digestion 2018; 97:250-259. [PMID: 29421805 DOI: 10.1159/000485027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/07/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS This article was undertaken to investigate the association of toll-like receptor 4 (TLR4) polymorphism (Thr399Ile) and risk of Crohn's disease (CD) by performing a meta-analysis. METHODS Articles were chosen based on PubMed, Embase, China National Knowledge Internet, and Chinese Wanfang databases (up to 12th October 2016). Specific inclusion criteria were used to evaluate articles. Meta-analysis was performed by using a random or fixed effect model. Fifteen eligible case-control studies were finally included into this meta-analysis. We estimated the summary OR with its corresponding 95% CI to assess the association. RESULTS Summary results of this meta-analysis showed a moderate association between the TLR4 T399I polymorphism and the risk of CD (allele model: OR 1.26, 95% CI 1.06-1.50, p = 0.009; heterozygote model: OR 1.36, 95% CI 1.11-1.66, p = 0.003; dominant model: OR 1.35, 95% CI 1.10-1.64, p = 0.004; homozygote model: OR 1.08, 95% CI 0.44-2.64, p = 0.866; recessive model: OR 0.97, 95% CI 0.40-2.35, p = 0.946). Stratified analysis on geographical area, ethnicity, and genotypic methods suggested that the polymorphism was associated with increased risk of CD in Asia and Asians, and "T" allele only moderately increased CD risk within polymerase chain reaction-restricted fragment length polymorphism. CONCLUSIONS Our meta-analysis suggests that TLR4 T399I polymorphism is moderately associated with susceptibility to CD, and more studies are needed to confirm our conclusion.
Collapse
Affiliation(s)
- Zhiquan Fu
- Department of Gastroenterology, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanting Shen
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Liubing Lin
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yirong Chen
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yong Li
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Renye Que
- Department of Gastroenterology, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
11
|
Vanaki N, Aslani S, Jamshidi A, Mahmoudi M. Role of innate immune system in the pathogenesis of ankylosing spondylitis. Biomed Pharmacother 2018; 105:130-143. [DOI: 10.1016/j.biopha.2018.05.097] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/19/2018] [Accepted: 05/20/2018] [Indexed: 12/11/2022] Open
|
12
|
Abdolmaleki F, Farahani N, Gheibi Hayat SM, Pirro M, Bianconi V, Barreto GE, Sahebkar A. The Role of Efferocytosis in Autoimmune Diseases. Front Immunol 2018; 9:1645. [PMID: 30083153 PMCID: PMC6064952 DOI: 10.3389/fimmu.2018.01645] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 07/04/2018] [Indexed: 12/28/2022] Open
Abstract
Apoptosis happens continuously for millions of cells along with the active removal of apoptotic debris in order to maintain tissue homeostasis. In this respect, efferocytosis, i.e., the process of dead cell clearance, is orchestrated through cell exposure of a set of "find me," "eat me," and "tolerate me" signals facilitating the engulfment of dying cells through phagocytosis by macrophages and dendritic cells. The clearance of dead cells via phagocytes is of utmost importance to maintain the immune system tolerance to self-antigens. Accordingly, this biological activity prevents the release of autoantigens by dead cells, thus potentially suppressing the undesirable autoreactivity of immune cells and the appearance of inflammatory autoimmune disorders as systemic lupus erythematous and rheumatoid arthritis. In the present study, the apoptosis pathways and their immune regulation were reviewed. Moreover, efferocytosis process and its impairment in association with some autoimmune diseases were discussed.
Collapse
Affiliation(s)
- Fereshte Abdolmaleki
- Cellular and Molecular Research Center, School of Paramedical Sciences, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Najmeh Farahani
- Department of Genetics and Molecular Biology, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Matteo Pirro
- Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine, University of Perugia, Perugia, Italy
| | - Vanessa Bianconi
- Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine, University of Perugia, Perugia, Italy
| | - George E. Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
13
|
Toll-Like Receptors: Regulators of the Immune Response in the Human Gut. Nutrients 2018; 10:nu10020203. [PMID: 29438282 PMCID: PMC5852779 DOI: 10.3390/nu10020203] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 12/28/2022] Open
Abstract
Toll-like receptors (TLRs) are powerful molecular regulators by which the immune system may "sense" the environment and protect the host from pathogens or endogenous threats. In mammalian cells, several TLRs were identified with a tissue and cell type-specific distribution. Understanding the functions of specific TLRs is crucial for the development and discovery of compounds useful to maintaining or re-establishing homeostasis in the gastrointestinal tract (GIT). Due to their relevance in regulating the inflammatory response in the GIT, we will focus here on TLR2, TLR4, and TLR5. In particular, we describe (a) the molecular pathways activated by the stimulation of these receptors with their known bacterial ligands; (b) the non-bacterial ligands known to interact directly with TLR2 and TLR4 and their soluble forms. The scope of this minireview is to highlight the importance of bacterial and non-bacterial compounds in affecting the gut immune functions via the activation of the TLRs.
Collapse
|
14
|
Lutz C, Weder B, Hünerwadel A, Fagagnini S, Lang B, Beerenwinkel N, Rossel JB, Rogler G, Misselwitz B, Hausmann M. Myeloid differentiation primary response gene (MyD) 88 signalling is not essential for intestinal fibrosis development. Sci Rep 2017; 7:17678. [PMID: 29247242 PMCID: PMC5732165 DOI: 10.1038/s41598-017-17755-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 11/29/2017] [Indexed: 01/15/2023] Open
Abstract
Dysregulation of the immune response to microbiota is associated with inflammatory bowel disease (IBD), which can trigger intestinal fibrosis. MyD88 is a key component of microbiota signalling but its influence on intestinal fibrosis has not been clarified. Small bowel resections from donor-mice were transplanted subcutaneously into the neck of recipients C57BL/6 B6-MyD88tm1 Aki (MyD88-/-) and C57BL/6-Tg(UBC-green fluorescence protein (GFP))30Scha/J (GFP-Tg). Grafts were explanted up to 21 days after transplantation. Collagen layer thickness was determined using Sirius Red stained slides. In the mouse model of fibrosis collagen deposition and transforming growth factor-beta 1 (TGF-β1) expression was equal in MyD88+/+ and MyD88-/-, indicating that MyD88 was not essential for fibrogenesis. Matrix metalloproteinase (Mmp)9 expression was significantly decreased in grafts transplanted into MyD88-/- recipients compared to MyD88+/+ recipients (0.2 ± 0.1 vs. 153.0 ± 23.1, respectively, p < 0.05), similarly recruitment of neutrophils was significantly reduced (16.3 ± 4.5 vs. 25.4 ± 3.1, respectively, p < 0.05). Development of intestinal fibrosis appears to be independent of MyD88 signalling indicating a minor role of bacterial wall compounds in the process which is in contrast to published concepts and theories. Development of fibrosis appears to be uncoupled from acute inflammation.
Collapse
Affiliation(s)
- C Lutz
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Weder
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - A Hünerwadel
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - S Fagagnini
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Lang
- Department of Biosystems Sciences and Engineering, ETH Zurich, Basel, Switzerland.,SIB Swiss Institute of Bioinformatics, Basel, Switzerland
| | - N Beerenwinkel
- Department of Biosystems Sciences and Engineering, ETH Zurich, Basel, Switzerland.,SIB Swiss Institute of Bioinformatics, Basel, Switzerland
| | - J B Rossel
- Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - G Rogler
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Misselwitz
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - M Hausmann
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland.
| |
Collapse
|
15
|
Kordjazy N, Haj-Mirzaian A, Haj-Mirzaian A, Rohani MM, Gelfand EW, Rezaei N, Abdolghaffari AH. Role of toll-like receptors in inflammatory bowel disease. Pharmacol Res 2017; 129:204-215. [PMID: 29155256 DOI: 10.1016/j.phrs.2017.11.017] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/05/2017] [Accepted: 11/14/2017] [Indexed: 12/15/2022]
Abstract
Inflammatory bowel disease (IBD) is the chronic inflammation of the gastrointestinal tract. Recently, studies of the interplay between the adaptive and innate immune responses have provided a better understanding of the immunopathogenesis of inflammatory disorders such as IBD, as well as identification of novel targets for more potent interventions. Toll-like receptors (TLRs) are a class of proteins that play a significant role in the innate immune system and are involved in inflammatory processes. Activation of TLR signal transduction pathways lead to the induction of numerous genes that function in host defense, including those for inflammatory cytokines, chemokines, and antigen presenting molecules. It was proposed that TLR mutations and dysregulation are major contributing factors to the predisposition and susceptibility to IBD. Thus, modulating TLRs represent an innovative immunotherapeutic approach in IBD therapy. This article outlines the role of TLRs in IBD, focusing on both animal and human studies; the role of TLR-targeted agonists or antagonists as potential therapeutic agents in the different stages of the disease is discussed.
Collapse
Affiliation(s)
- Nastaran Kordjazy
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Arvin Haj-Mirzaian
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Shahid Beheshti Universtity of Medical Sciences, Tehran, Iran
| | - Arya Haj-Mirzaian
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mojtaba Rohani
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Erwin W Gelfand
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Boston, MA, USA.
| | - Amir Hossein Abdolghaffari
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Tehran, Iran; Department of Pharmacology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Gastrointestinal Pharmacology Interest Group (GPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| |
Collapse
|
16
|
Feki S, Bouzid D, Abida O, Chtourou L, Elloumi N, Toumi A, Hachicha H, Amouri A, Tahri N, Masmoudi H. Genetic association and phenotypic correlation of TLR4 but not NOD2 variants with Tunisian inflammatory bowel disease. J Dig Dis 2017; 18:625-633. [PMID: 29055077 DOI: 10.1111/1751-2980.12552] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/29/2017] [Accepted: 10/15/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The common association between NOD2/CARD15 and TLR4 gene variants with inflammatory bowel disease (IBD) has not been replicated in all studies. We studied the polymorphism of these two genes in Tunisian patients with IBD. METHODS Polymorphisms of NOD2 (R702W, G908R and L1007fs) and TLR4 (Asp299Gly and Thr399Ile) genes were analyzed in 106 patients with IBD (68 with ulcerative colitis [UC], 38 with Crohn's disease [CD]) and 160 healthy controls using polymerase chain reaction-restriction fragment length polymorphism. Genotypes and phenotypes were correlated. RESULTS The mutated allele of TLR4-Thr399Ile was strongly associated with IBD (9.4% in IBD, 7.4% in UC and 13.2% in CD vs 2.5% in controls; P = 0.0004, 0.014 and 0.00006, respectively). Heterozygous genotypes were significantly more frequent in patients with IBD (17.0%), UC (14.7%) and CD (21.1%) than in controls (5.0%) (P = 0.0012, 0.012 and 0.001, respectively). Interestingly, the wild genotype was found to be protective (odds ratio 0.24). The mutated allele of TLR4-Asp299Gly was more frequent in controls (6.8%) than in patients with IBD (2.9%). A phenotypic correlation of Asp299Gly-AG genotype with arthritis in UC patients was detected (P = 0.003). Regarding the NOD2 gene, the common variations studied were not polymorphic and there was no genetic association with IBD. CONCLUSION The TLR4-Thr399Ile variant was strongly associated with susceptibility to IBD, whereas TLR4-Asp299Gly seems to play a role in the clinical expression of UC. The rarity and non-association of NOD2 mutations with IBD may reveal a genetic characteristic of the population in our region.
Collapse
Affiliation(s)
- Sawsan Feki
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Dorra Bouzid
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Olfa Abida
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Lassaad Chtourou
- Department of Gastroenterology, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Nesrine Elloumi
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Amina Toumi
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Hend Hachicha
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Ali Amouri
- Department of Gastroenterology, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Nabil Tahri
- Department of Gastroenterology, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Hatem Masmoudi
- Department of Immunology, Habib Bourguiba University Hospital, Sfax, Tunisia
| |
Collapse
|
17
|
Török HP, Bellon V, Konrad A, Lacher M, Tonenchi L, Siebeck M, Brand S, De Toni EN. Functional Toll-Like Receptor (TLR)2 polymorphisms in the susceptibility to inflammatory bowel disease. PLoS One 2017; 12:e0175180. [PMID: 28388655 PMCID: PMC5384663 DOI: 10.1371/journal.pone.0175180] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/21/2017] [Indexed: 01/17/2023] Open
Abstract
Background The recent genome-wide association studies (GWAS) in inflammatory bowel disease (IBD) suggest significant genetic overlap with complex mycobacterial diseases like tuberculosis or leprosy. TLR variants have previously been linked to susceptibility for mycobacterial diseases. Here we investigated the contribution to IBD risk of two TLR2 polymorphisms, the low-prevalence variant Arg753Gln and the GTn microsatellite repeat polymorphism in intron 2. We studied association with disease, possible correlations with phenotype and gene-gene interactions. Methodology/Principal findings We conducted a large study in 843 patients with Crohn’s disease, 426 patients with ulcerative colitis and 805 healthy, unrelated controls, all of European origin. Overall, the frequency for carriers of shorter GTn repeats in intron 2 of the TLR2 gene, which have previously been associated with low TLR2 expression and high IL-10 production, was slightly elevated in Crohn’s disease and ulcerative colitis compared to healthy controls (16.0% resp. 16.7% vs. 12.8%). The highest frequency of short GTn carriers was noted among IBD patients on anti TNF-alpha therapy. However, none of these differences was significant in the multivariate analysis. The Arg753Gln polymorphism showed no association with any clinical subtype of IBD, including extensive colitis, for which such an association was previously described. We found no association with specific phenotypic disease subgroups. Also, epistasis analysis revealed no significant interactions between the two TLR2 variants and confirmed IBD susceptibility genes. Conclusions The two functional relevant polymorphisms in TLR2, the GTn microsatellite repeat polymorphism in intron 2 and the Arg753Gln variant do not seem to play a role in the susceptibility to Crohn’s disease or ulcerative colitis.
Collapse
Affiliation(s)
- Helga Paula Török
- Department of Medicine II, Ludwig-Maximilians-University, Munich, Germany
- * E-mail:
| | - Victor Bellon
- MINES ParisTech, PSL-Research University, CBIO-Centre for Computational Biology, Fontainebleau, France
- Institut Curie, Paris,France
- INSERM U900, Paris, France
| | - Astrid Konrad
- Department of Medicine II, Ludwig-Maximilians-University, Munich, Germany
| | - Martin Lacher
- Department of Pediatric Surgery, University of Leipzig, Leipzig, Germany
| | - Laurian Tonenchi
- Department of General, Visceral, Vascular and Transplantation Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Matthias Siebeck
- Department of General, Visceral, Vascular and Transplantation Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Stephan Brand
- Department of Medicine II, Ludwig-Maximilians-University, Munich, Germany
| | | |
Collapse
|
18
|
Fan L, Fu G, Ding Y, Lv P, Li H. Bactericidal/permeability increasing protein gene polymorphism and inflammatory bowel diseases: meta-analysis of five case-control studies. Int J Colorectal Dis 2017; 32:433-435. [PMID: 28035462 DOI: 10.1007/s00384-016-2740-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/19/2016] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Bactericidal/permeability increasing protein (BPI) gene polymorphisms have been extensively investigated in terms of their associations with inflammatory bowel disease (IBD), with contradictory results. The aim of this meta-analysis was to evaluate associations between BPI gene polymorphisms and the risk of IBD, Crohn's disease (CD), and ulcerative colitis (UC). METHODS Eligible studies from PubMed, Embase, and Cochrane library databases were identified. RESULTS Ten studies (five CD and five UC) published in five papers were included in this meta-analysis. G645A polymorphism was associated with a decreased risk of UC in allele model, dominant model, and homozygous model. CONCLUSIONS Our data suggested that BPI G645A polymorphism was associated with a decreased risk of UC; the BPI G645A polymorphism was not associated with the risk of CD.
Collapse
Affiliation(s)
- Lijuan Fan
- Department of Gastroenterology, Jining First People's Hospital, No. 6 health Road, Jining, Shandong Province, 272000, China
| | - Guoning Fu
- Department of Gastroenterology, Jining First People's Hospital, No. 6 health Road, Jining, Shandong Province, 272000, China
| | - Yuanyuan Ding
- Department of Gastroenterology, Jining First People's Hospital, No. 6 health Road, Jining, Shandong Province, 272000, China
| | - Peng Lv
- Department of Gastroenterology, Jining First People's Hospital, No. 6 health Road, Jining, Shandong Province, 272000, China
| | - Hongyun Li
- Department of Gastroenterology, Jining First People's Hospital, No. 6 health Road, Jining, Shandong Province, 272000, China.
| |
Collapse
|
19
|
Common NOD2/CARD15 and TLR4 Polymorphisms Are Associated with Crohn's Disease Phenotypes in Southeastern Brazilians. Dig Dis Sci 2016; 61:2636-47. [PMID: 27107867 DOI: 10.1007/s10620-016-4172-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 04/15/2016] [Indexed: 02/07/2023]
Abstract
AIM To investigate whether variants in NOD2/CARD15 and TLR4 are associated with CD and ulcerative colitis (UC) in a genetically admixed population of Rio de Janeiro, where IBD has continued to rise. METHODS We recruited 67 consecutive patients with CD, 61 patients with UC, and 86 healthy and ethnically matched individuals as controls. DNA was extracted from buccal brush samples and genotyped by PCR with restriction enzymes for G908R and L1007finsC NOD2/CARD15 single-nucleotide polymorphisms (SNPs) and for T399I and D299G TLR4 SNPs. Clinical data were registered for subsequent analysis with multivariate models. RESULTS NOD2/CARD15 G908R and L1007finsC SNPs were found in one and three patients, respectively, with CD. NOD2/CARD15 G908R and L1007finsC SNPs were not found in any patients with UC, but were found in three and three controls, respectively. With regard to the TLR4 gene, no significant difference was detected among the groups. Overall, none of the SNPs investigated determined a differential risk for a specific diagnosis. Genotype-phenotype associations were found in only CD, where L1007finsC was associated with colonic localization; however, TLR4 T399I SNP was associated with male gender, and D299G SNP was associated with colonic involvement, chronic corticosteroid use, and the need for anti-TNF-alpha therapy. CONCLUSION Variants of NOD2/CARD15 and TLR4 do not confer susceptibility to IBD, but appear to determine CD phenotypes in this southeastern Brazilian population.
Collapse
|
20
|
Epistatic interaction between TLR4 and NOD2 in patients with Crohn's Disease: relation with risk and phenotype in a Spanish cohort. Immunobiology 2016; 221:927-33. [PMID: 27290609 DOI: 10.1016/j.imbio.2016.05.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 05/18/2016] [Accepted: 05/27/2016] [Indexed: 01/11/2023]
Abstract
Crohn's Disease is one of the two major forms of the Inflammatory Bowel Diseases and, although the etiology is not completely understood, the confluence of environmental and genetic factors has been demonstrated. The aim of this study was to determine the distribution of TLR4 variants in a Spanish cohort of Crohn's Disease patients and their relation with phenotype and common NOD2 variants. A total of 371 Crohn's Disease (CD) patients and 636 healthy controls (HC) were included. Single Nucleotide Polimorphisms (SNPs) in TLR4 (D299G and T399I) and NOD2 (R702W and G908R) detection was performed by a Taqman(®) Allelic Discrimination Assay. 1007insC NOD2 variant was analyzed using a PCR combined with fluorescent technology and the different alleles were determined depending on the PCR products size. D299G and T399I were related to CD only in patients carrying NOD2 variants (NOD2+/TLR4+ haplotype) (p=0.036; OR=1.924), increasing the risk to develop CD when 1007insC and TLR4 variants were both present (OR=4.886). We also described a strong association between mutant NOD2 and CD risk (p<0.001, OR=3.214). R702W, G908R and 1007insC were associated when they were considered separately (p<0.001; p=0.002; p<0.001, respectively). Moreover, the patients carrying any mutant D299G or T399I polymorphisms were predisposed to develop a stricturing disease (p=0.013; OR=2.391), especially in the presence of NOD2 mutation (p=0.002; OR=4.989). In this study, ileal disease was also associated with the presence of at least one NOD2 susceptibility allele (p=0.001; OR=3.838) and, the risk of ileal CD was increased if TLR4 variants were presents (p<0.050; OR=4.160). TLR4 variants were related to bowel perforation, independently of NOD2.
Collapse
|
21
|
Chua KH, Ng JG, Ng CC, Hilmi I, Goh KL, Kee BP. Association of NOD1, CXCL16, STAT6 and TLR4 gene polymorphisms with Malaysian patients with Crohn's disease. PeerJ 2016; 4:e1843. [PMID: 27069792 PMCID: PMC4824893 DOI: 10.7717/peerj.1843] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 03/03/2016] [Indexed: 12/11/2022] Open
Abstract
Crohn's disease (CD) is a prominent type of inflammatory bowel disease (IBD) that can affect any part of the gastrointestinal tract. CD is known to have higher prevalence in the Western countries, but the number of cases has been increasing in the past decades in Asia, including Malaysia. Therefore, there is a need to investigate the underlining causes of CD that may shed light on its prevention and treatment. In this study, genetic polymorphisms in NOD1 (rs2075820), CXCL16 (rs2277680), STAT6 (rs324015) and TLR4 (rs4986791) genes were examined in a total of 335 individuals (85 CD patients and 250 healthy controls) with PCR-RFLP approach. There was no significant association observed between NOD1 rs2075820 and STAT6 rs324015 with the onset of CD in the studied cohort. However, the G allele of CXCL16 rs2277680 was found to have a weak association with CD patients (P = 0.0482; OR = 1.4310). The TLR4 rs4986791 was also significantly associated to CD. Both the homozygous C genotype (P = 0.0029; OR = 0.3611) and C allele (P = 0.0069; OR = 0.4369) were observed to confer protection against CD. On the other hand, the heterozygous C/T genotype was a risk genotype (P = 0.0015; OR = 3.1392). Further ethnic-stratified analysis showed that the significant associations in CXCL16 rs2277680 and TLR4 rs4986791 were accounted by the Malay cohort. In conclusion, the present study reported two CD-predisposing loci in the Malay CD patients. However, these loci were not associated to the onset of CD in Chinese and Indian patients.
Collapse
Affiliation(s)
- Kek Heng Chua
- Department of Biomedical Science, Faculty of Medicine, Universiti Malaya , Kuala Lumpur , Malaysia
| | - Jin Guan Ng
- Division of Genetics and Molecular Biology, Institute of Biological Science, Faculty of Science, Universiti Malaya , Kuala Lumpur , Malaysia
| | - Ching Ching Ng
- Division of Genetics and Molecular Biology, Institute of Biological Science, Faculty of Science, Universiti Malaya , Kuala Lumpur , Malaysia
| | - Ida Hilmi
- Division of Gastroenterology and Hepatology, Department of Medicine, Faculty of Medicine, Universiti Malaya , Kuala Lumpur , Malaysia
| | - Khean Lee Goh
- Division of Gastroenterology and Hepatology, Department of Medicine, Faculty of Medicine, Universiti Malaya , Kuala Lumpur , Malaysia
| | - Boon Pin Kee
- Department of Biomedical Science, Faculty of Medicine, Universiti Malaya , Kuala Lumpur , Malaysia
| |
Collapse
|
22
|
Diamond CE, Khameneh HJ, Brough D, Mortellaro A. Novel perspectives on non-canonical inflammasome activation. Immunotargets Ther 2015; 4:131-41. [PMID: 27471719 PMCID: PMC4918253 DOI: 10.2147/itt.s57976] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Inflammasomes are cytosolic multi-protein complexes that regulate the secretion of the proinflammatory cytokines, IL-1β and IL-18, and induce pyroptosis, an inflammatory form of cell death. The NLRP3 inflammasome is the most well-characterized member of this family and functions by sensing intracellular pathogen- and damage-associated molecular patterns and activating caspase-1, which processes the biologically inactive IL-1β and IL-18 precursors into active cytokines. Recent studies have identified an alternative mechanism of inflammasome activation, termed the non-canonical inflammasome, which is triggered by cytosolic sensing of lipopolysaccharide (LPS) derived from bacteria that have escaped phagolysosomes. This pathway is independent of Toll-like receptor 4 (TLR4), the well-known extracellular receptor for LPS, but instead depends on the inflammatory protease, caspase-11. Although our understanding of caspase-11 activation is still in its infancy, it appears to be an essential mediator of septic shock and attenuates intestinal inflammation. In this review, we bring together the latest data on the roles of caspase-11 and the mechanisms underlying caspase-11-mediated activation of the non-canonical inflammasome, and consider the implications of this pathway on TLR4-independent immune responses to LPS.
Collapse
Affiliation(s)
- Catherine Emma Diamond
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore; Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Hanif Javanmard Khameneh
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore
| | - David Brough
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Alessandra Mortellaro
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore
| |
Collapse
|
23
|
Cheng Y, Zhu Y, Huang X, Zhang W, Han Z, Liu S. Association between TLR2 and TLR4 Gene Polymorphisms and the Susceptibility to Inflammatory Bowel Disease: A Meta-Analysis. PLoS One 2015; 10:e0126803. [PMID: 26023918 PMCID: PMC4449210 DOI: 10.1371/journal.pone.0126803] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 04/08/2015] [Indexed: 12/18/2022] Open
Abstract
Background The associations between toll-like receptor 2 (TLR2) and toll-like receptor 4(TLR4) polymorphisms and inflammatory bowel disease (IBD) susceptibility remain controversial. A meta-analysis was performed to assess these associations. Methods A systematic search was performed to identify all relevant studies relating TLR2 and TLR4 polymorphisms and IBD susceptibility. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. Subgroup analyses were performed by ethnicity and publication quality. Results Thirty-eight eligible studies, assessing 10970 cases and 7061 controls were included. No TLR2 Arg677Trp polymorphism was found. No significant association was observed between TLR2 Arg753Gln polymorphism and Crohn’s disease (CD) or ulcerative colitis (UC) in all genetic models. Interestingly, TLR4 Asp299Gly polymorphism was significantly associated with increased risk of CD and UC in all genetic models, except for the additive one in CD. In addition, a statistically significant association between TLR4 Asp299Gly polymorphism and IBD was observed among high quality studies evaluating Caucasians, but not Asians. Associations between TLR4 Thr399Ile polymorphisms and CD risk were found only in the allele and dominant models. The TLR4 Thr399Ile polymorphism was associated with UC risk in pooled results as well as subgroup analysis of high quality publications assessing Caucasians, in allele and dominant models. Conclusions The meta-analysis provides evidence that TLR2 Arg753Gln is not associated with CD and UC susceptibility in Asians; TLR4 Asp299Gly is associated with CD and UC susceptibility in Caucasians, but not Asians. TLR4 Thr399Ile may be associated with IBD susceptibility in Caucasians only. Additional well-powered studies of Asp299Gly and other TLR4 variants are warranted.
Collapse
Affiliation(s)
- Yang Cheng
- First clinical college, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Yun Zhu
- Liver Tumor Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Xiuping Huang
- First clinical college, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Wei Zhang
- First clinical college, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Zelong Han
- First clinical college, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Side Liu
- Department of Digestion, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| |
Collapse
|
24
|
Role of TLR4 rs4986790A>G and rs4986791C>T Polymorphisms in the Risk of Inflammatory Bowel Disease. Gastroenterol Res Pract 2015; 2015:141070. [PMID: 26089865 PMCID: PMC4451775 DOI: 10.1155/2015/141070] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/08/2015] [Accepted: 04/15/2015] [Indexed: 02/07/2023] Open
Abstract
Objective. The present meta-analysis investigated the contribution of TLR4 rs4986790A>G and rs4986791C>T genetic polymorphisms in increasing the risk of inflammatory bowel disease (IBD). Methods. Databases were searched using a combination of keywords related to TLR4 and IBD. Relevant studies were selected based on strict inclusion and exclusion criteria. Meta-analysis of the data extracted from the selected studies was performed using CMA 2.0 statistical analysis software. Results. Out of the 70 studies retrieved by database search, only 13 studies were eligible for inclusion in this meta-analysis and these 13 studies contained a total number of 4409 IBD patients and 5693 healthy controls. The meta-analysis results demonstrated that TLR4 rs4986790A>G polymorphism is associated with an increased risk of IBD (allele model: OR = 1.268, 95% CI = 1.124~1.431, and P < 0.001; dominant model: OR = 1.240, 95% CI = 1.090~1.409, and P = 0.001). Similarly, TLR4 rs4986791C>T polymorphism also conferred an increased risk of IBD (allele model: OR = 1.259, 95% CI = 1.092~1.453, and P = 0.002; dominant model: OR = 1.246, 95% CI = 1.072~1.447, and P = 0.004). Conclusion. Our meta-analysis results demonstrate that TLR4 rs4986790A>G and rs4986791C>T genetic polymorphisms are associated with the etiopathogenesis of IBD.
Collapse
|
25
|
Association of TLR1, TLR2, TLR4, TLR6, and TIRAP polymorphisms with disease susceptibility. Immunol Res 2015; 62:234-52. [DOI: 10.1007/s12026-015-8640-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
26
|
Can G, Akın H, Özdemir FT, Can H, Yılmaz B, Eren F, Atuğ Ö, Ünsal B, Hamzaoğlu HO. Bactericidal permeability increasing protein gene polymorphism is associated with inflammatory bowel diseases in the Turkish population. Saudi J Gastroenterol 2015; 21:239-44. [PMID: 26228368 PMCID: PMC4542423 DOI: 10.4103/1319-3767.161642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND/AIMS Inflammatory bowel disease, a chronic inflammatory disease with unknown etiology, affects the small and large bowel at different levels. It is increasingly considered that innate immune system may have a central position in the pathogenesis of the disease. As a part of the innate immune system, bactericidal permeability increasing protein has an important role in the recognition and neutralization of gram-negative bacteria. The aim of our study was to investigate the involvement of bactericidal permeability increasing protein gene polymorphism (bactericidal permeability increasing protein Lys216Glu) in inflammatory bowel disease in a large group of Turkish patients. PATIENTS AND METHODS The present study included 528 inflammatory bowel disease patients, 224 with Crohn's disease and 304 with ulcerative colitis, and 339 healthy controls. RESULTS Bactericidal permeability increasing protein Lys216Glu polymorphism was found to be associated with both Crohn's disease and ulcerative colitis (P = 0.0001). The frequency of the Glu/Glu genotype was significantly lower in patients using steroids and in those with steroid dependence (P = 0.012, OR, 0.80; 95% confidence interval [CI]: 0.68-0.94; P = 0.0286, OR, 0.75; 95% CI: 0.66-0.86, respectively). There was no other association between bactericidal permeability increasing protein gene polymorphism and phenotypes of inflammatory bowel disease. CONCLUSIONS Bactericidal permeability increasing protein Lys216Glu polymorphism is associated with both Crohn's disease and ulcerative colitis. This is the first study reporting the association of bactericidal permeability increasing protein gene polymorphism with steroid use and dependence in Crohn's disease.
Collapse
Affiliation(s)
- Güray Can
- Department of Gastroenterology, Abant İzzet Baysal University, Faculty of Medicine, Bolu, Turkey,Address for correspondence: Dr. Güray Can, Department of Gastroenterology, Abant İzzet Baysal University, Faculty of Medicine, Gölköy Campus, 14280, Bolu, Turkey. E-mail:
| | - Hakan Akın
- Department of Gastroenterology, Marmara University, Faculty of Medicine, Istanbul, Turkey
| | - Filiz T. Özdemir
- Department of Genetics, Marmara University Institute of Gastroenterology, Istanbul, Turkey
| | - Hatice Can
- Department of Internal Medicine, Abant İzzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Bülent Yılmaz
- Department of Gastroenterology, Bolu İzzet Baysal State Hospital, Bolu, Turkey
| | - Fatih Eren
- Department of Genetics, Marmara University Institute of Gastroenterology, Istanbul, Turkey
| | - Özlen Atuğ
- Department of Gastroenterology, Marmara University, Faculty of Medicine, Istanbul, Turkey
| | - Belkıs Ünsal
- Department of Gastroenterology, Katip Çelebi University, Faculty of Medicine, İzmir, Turkey
| | - Hülya O. Hamzaoğlu
- Department of Gastroenterology, İstanbul Acıbadem Fulya Hospital, Istanbul, Turkey
| |
Collapse
|
27
|
Abstract
The innate immune system is a key factor in understanding the pathogenesis of inflammatory bowel disease (IBD) and in the hopes of improving its treatment. NOD2, a pattern recognition receptor, was one of the first major susceptibility genes identified in Crohn's disease (CD). This discovery has been followed by genome-wide association studies that have identified other genes involved in innate immune responses. Most notably, polymorphisms in the interleukin (IL)-23 receptor have also been linked to IBD - both CD and ulcerative colitis. At the core of the innate immune defects associated with IBD is a lack of generating a robust response to control invasive commensal or pathogenic bacteria. The defect sometimes lies in a failure of the epithelium to express antimicrobial peptides or in defective control of intracellular bacteria by phagocytic cells such as dendritic cells, macrophages, or neutrophils. The recent identification of innate lymphoid cells that express the IL-23 receptor and generate both proinflammatory and protective or regulatory responses to commensal or pathogenic bacteria provides another layer of complexity to the interplay of host protection and dysregulated inflammation. Although inhibition of tumor necrosis factor has been highly successful as a strategy in treating IBD, we must better understand the nuanced role of other innate cytokines before we may incorporate these in the treatment of IBD.
Collapse
Affiliation(s)
- Julie M Davies
- Miller School of Medicine, University of Miami , Miami Fl , USA
| | | |
Collapse
|
28
|
Senhaji N, Diakité B, Serbati N, Zaid Y, Badre W, Nadifi S. Toll-like receptor 4 Asp299Gly and Thr399Ile polymorphisms: New data and a meta-analysis. BMC Gastroenterol 2014; 14:206. [PMID: 25492126 PMCID: PMC4279599 DOI: 10.1186/s12876-014-0206-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 11/24/2014] [Indexed: 01/21/2023] Open
Abstract
Background The pathogenesis of inflammatory bowel disease (IBD) involves interactions between the host genetic susceptibility, intestinal microflora and mucosal immune responses through the pattern recognition receptor. Polymorphisms in toll-like receptor 4 (TLR4) induce an aberrant immune response to indigenous intestinal flora, which might favor IBD development. In this study, we aimed to determine whether TLR4 gene was associated with Crohn’s disease (CD) and ulcerative colitis (UC) among Moroccan patients, and evaluated its correlation with clinical manifestation of the disease. Methods The study population comprised 117 patients with IBD and 112 healthy unrelated blood donors. TLR4 polymorphisms: Asp299Gly and Thr399Ile were genotyped by polymerase chain reaction-restriction fragment length polymorphism. PCR products were cleaved with Nco I for the Asp299Gly polymorphism and Hinf I for the Thr399Ile polymorphism. Meta-analysis was performed to test the association of 299Gly and 399Ileu carriage with CD, UC and the overall IBD risk. Results Our study revealed that the frequency of Asp299Gly and Thr399Ile did not differ significantly between patients and controls in the Moroccan population. However, meta-analysis demonstrated significantly higher frequencies of both Asp299Gly and Thr399Ile SNPs in IBD and CD and for 399Ileu carriage in UC patients. Conclusion The meta-analysis provides evidence that TLR4 polymorphisms confer a significant increased risk for the overall IBD development.
Collapse
Affiliation(s)
- Nezha Senhaji
- Laboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco.
| | - Brehima Diakité
- Laboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco.
| | - Nadia Serbati
- Laboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco.
| | - Younes Zaid
- Laboratory of Thrombosis and Haemostasis Research Centre, Montreal Heart Institute, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada.
| | - Wafaa Badre
- Gastroenterology Department, CHU Ibn Rochd, Casablanca, Morocco.
| | - Sellama Nadifi
- Laboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco.
| |
Collapse
|
29
|
Dignass A, Eliakim R, Magro F, Maaser C, Chowers Y, Geboes K, Mantzaris G, Reinisch W, Colombel JF, Vermeire S, Travis S, Lindsay JO, van Assche G. [Second European evidence-based Consensus on the diagnosis and management of ulcerative colitis Part 1: Definitions and diagnosis (Spanish version)]. REVISTA DE GASTROENTEROLOGÍA DE MÉXICO 2014; 79:263-89. [PMID: 25487134 DOI: 10.1016/j.rgmx.2014.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 10/23/2014] [Indexed: 02/07/2023]
Affiliation(s)
- A Dignass
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo.
| | - R Eliakim
- AD y RE contribuyeron de igual manera en este trabajo
| | - F Magro
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - C Maaser
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - Y Chowers
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - K Geboes
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - G Mantzaris
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - W Reinisch
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - J-F Colombel
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - S Vermeire
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - S Travis
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - J O Lindsay
- AD y GVA actuaron como coordinadores del Consenso; AD y RE contribuyeron de igual manera en este trabajo
| | - G van Assche
- AD y GVA actuaron como coordinadores del Consenso.
| |
Collapse
|
30
|
Peroxisome proliferator-activated receptor gamma in the colon: inflammation and innate antimicrobial immunity. J Clin Gastroenterol 2014; 48 Suppl 1:S23-7. [PMID: 25291120 DOI: 10.1097/mcg.0000000000000253] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is a nuclear receptor, originally described in adipose tissue, which controls the expression of a large number of regulatory genes in lipid metabolism and insulin sensitization. Well known by endocrinologists, thiazolidinedionesare classical PPARγ synthetic agonists, which were currently used as insulin-sensitizing agents in the treatment of type 2 diabetes. Although the clinical benefits of thiazolidinediones in treating metabolic disorders have been clearly demonstrated, studies performed in animal models of colitis and in patients with ulcerative colitis have also revealed the key roles of PPARγ activation in the regulation of inflammation and immune response, notably in the colon through epithelial cells.
Collapse
|
31
|
Orel R, Kamhi Trop T. Intestinal microbiota, probiotics and prebiotics in inflammatory bowel disease. World J Gastroenterol 2014; 20:11505-11524. [PMID: 25206258 PMCID: PMC4155344 DOI: 10.3748/wjg.v20.i33.11505] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 01/06/2014] [Accepted: 06/13/2014] [Indexed: 02/06/2023] Open
Abstract
It has been presumed that aberrant immune response to intestinal microorganisms in genetically predisposed individuals may play a major role in the pathogenesis of the inflammatory bowel disease, and there is a good deal of evidence supporting this hypothesis. Commensal enteric bacteria probably play a central role in pathogenesis, providing continuous antigenic stimulation that causes chronic intestinal injury. A strong biologic rationale supports the use of probiotics and prebiotics for inflammatory bowel disease therapy. Many probiotic strains exhibit anti-inflammatory properties through their effects on different immune cells, pro-inflammatory cytokine secretion depression, and the induction of anti-inflammatory cytokines. There is very strong evidence supporting the use of multispecies probiotic VSL#3 for the prevention or recurrence of postoperative pouchitis in patients. For treatment of active ulcerative colitis, as well as for maintenance therapy, the clinical evidence of efficacy is strongest for VSL#3 and Escherichia coli Nissle 1917. Moreover, some prebiotics, such as germinated barley foodstuff, Psyllium or oligofructose-enriched inulin, might provide some benefit in patients with active ulcerative colitis or ulcerative colitis in remission. The results of clinical trials in the treatment of active Crohn’s disease or the maintenance of its remission with probiotics and prebiotics are disappointing and do not support their use in this disease. The only exception is weak evidence of advantageous use of Saccharomyces boulardii concomitantly with medical therapy in maintenance treatment.
Collapse
|
32
|
Association between nucleotide oligomerisation domain two (Nod2) gene polymorphisms and canine inflammatory bowel disease. Vet Immunol Immunopathol 2014; 161:32-41. [DOI: 10.1016/j.vetimm.2014.06.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 06/06/2014] [Accepted: 06/19/2014] [Indexed: 02/07/2023]
|
33
|
Sarlos P, Kovesdi E, Magyari L, Banfai Z, Szabo A, Javorhazy A, Melegh B. Genetic update on inflammatory factors in ulcerative colitis: Review of the current literature. World J Gastrointest Pathophysiol 2014; 5:304-21. [PMID: 25133031 PMCID: PMC4133528 DOI: 10.4291/wjgp.v5.i3.304] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/19/2014] [Accepted: 07/12/2014] [Indexed: 02/06/2023] Open
Abstract
Ulcerative colitis (UC) is one of the main types of inflammatory bowel disease, which is caused by dysregulated immune responses in genetically predisposed individuals. Several genetic factors, including interleukin and interleukin receptor gene polymorphisms and other inflammation-related genes play central role in mediating and modulating the inflammation in the human body, thereby these can be the main cause of development of the disease. It is clear these data are very important for understanding the base of the disease, especially in terms of clinical utility and validity, but summarized literature is exiguous for challenge health specialist that can used in the clinical practice nowadays. This review summarizes the current literature on inflammation-related genetic polymorphisms which are associated with UC. We performed an electronic search of Pubmed Database among publications of the last 10 years, using the following medical subject heading terms: UC, ulcerative colitis, inflammation, genes, polymorphisms, and susceptibility.
Collapse
|
34
|
Tahara T, Shibata T, Okubo M, Ishizuka T, Kawamura T, Yamashita H, Nakamura M, Nakagawa Y, Nagasaka M, Arisawa T, Ohmiya N, Hirata I. Effect of RANTES gene promoter genotypes in patients with ulcerative colitis. Biomed Rep 2014; 2:602-606. [PMID: 24944817 DOI: 10.3892/br.2014.287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/16/2014] [Indexed: 12/12/2022] Open
Abstract
A complex interaction of genetic and environmental factors is closely associated with the development of inflammatory bowel disease. Previous studies reported that the expression of the regulated upon activation, normal T-cell expressed and secreted (RANTES) gene is enhanced in the colonic mucosa of ulcerative colitis (UC). Quantitative differences in RANTES gene expression among numerous promoter genotypes have also been reported. The aim of the present study was to clarify the effect of RANTES promoter polymorphism on the risk of UC, including its clinical phenotypes. A total of 150 UC patients and 372 healthy control (HC) subjects participated in the study. The UC patients were classified by disease behavior, severity and extent of disease. Restriction fragment length polymorphism analysis was performed for polymorphisms at -28 C/G in the RANTES gene promoter region. Although no significant difference of the RANTES promoter genotype distribution was observed between the HC and UC groups, the G/G genotype was significantly higher among female (OR=3.95, 95% CI=1.22-12.82, P=0.03), non-steroid dependent (OR=3.37, 95% CI=1.16-9.85, P=0.03) and non-refractory (OR=3.76, 95% CI=1.29-10.98, P=0.02) UC patients. The G carrier was also found to be associated with an increased risk of rectal colitis (OR=2.21, 95% CI=1.12-4.39, P=0.03). The data indicate that the polymorphism of the RANTES promoter is not directly associated with the susceptibility to UC, but the -28 G allele is associated with female UC patients and mild clinical phenotypes of UC, including non-steroid dependency, non-refractory and rectal colitis.
Collapse
Affiliation(s)
- Tomomitsu Tahara
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masaaki Okubo
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Takamitsu Ishizuka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomohiko Kawamura
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Hiromi Yamashita
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masakatsu Nakamura
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa 920-0293, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Mitsuo Nagasaka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomiyasu Arisawa
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa 920-0293, Japan
| | - Naoki Ohmiya
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Ichiro Hirata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| |
Collapse
|
35
|
Tahara T, Shibata T, Okubo M, Ishizuka T, Kawamura T, Yamashita H, Nakamura M, Nakagawa Y, Nagasaka M, Arisawa T, Ohmiya N, Hirata I. Heat-shock protein 70-2 BB genotype is associated with reduced risks of the steroid-dependent and refractory phenotypes of ulcerative colitis. Biomed Rep 2014; 2:555-558. [PMID: 24944807 DOI: 10.3892/br.2014.288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/16/2014] [Indexed: 01/03/2023] Open
Abstract
Previous studies have demonstrated the protective role of inducible heat-shock protein (HSP) 70 in intestinal cells. The HSP70-2 gene has a PstI site due to an A-G transition at the 1,267 position and different genotypes are associated with various levels of mRNA expression. The present study aimed to clarify the effect of the HSP70-2 polymorphism on the risk of ulcerative colitis (UC), including its clinical phenotypes. A total of 121 patients with UC and 500 healthy control (HC) subjects participated in the study. To assess the polymorphisms at the 1,267 position of the HSP70-2 gene, restriction fragment length polymorphism analysis was performed. The subjects in the study were classified by disease behavior, severity and extent of disease. Although no significant difference of the HSP70-2 genotype distribution was identified between the HC and UC groups, the BB genotype exhibited a lower risk of the steroid-dependent phenotype [odds ratio (OR), 0.12; 95% confidence interval (CI), 0.02-0.95; P=0.02]. The same genotype was also associated with a lower risk of the refractory phenotype (OR, 0.16; 95% CI, 0.04-0.73; P=0.01). There was no direct correlation between the polymorphism of the HSP70-2 gene and UC susceptibility. However, there was an association between a reduced risk of the steroid-dependent and refractory phenotypes of UC and the BB genotype.
Collapse
Affiliation(s)
- Tomomitsu Tahara
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masaaki Okubo
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Takamitsu Ishizuka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomohiko Kawamura
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Hiromi Yamashita
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masakatsu Nakamura
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa-ken 920-0292, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Mitsuo Nagasaka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomiyasu Arisawa
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa-ken 920-0292, Japan
| | - Naoki Ohmiya
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Ichiro Hirata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| |
Collapse
|
36
|
Ahmed FE. Role of genes, the environment and their interactions in the etiology of inflammatory bowel diseases. Expert Rev Mol Diagn 2014; 6:345-63. [PMID: 16706738 DOI: 10.1586/14737159.6.3.345] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Few of the studied genes demonstrate association with inflammatory bowel disease (IBD). Three mutations in the nucleotide-binding oligomerization domain 2 gene have consistently shown to be independent risk factors for Crohn's disease, but none of the alleles exhibited high sensitivity or specificity for IBD. Linkage analysis implicated several loci on various chromosomes, and epistasis has been demonstrated. The etiopathogenesis of IBD remains unknown, and environmental contribution to their pathogenesis is evident from genetic studies that demonstrated incomplete monozygotic twins concordandance rate for both Crohn's and ulcerative colitis. Smoking has shown an opposite effect on disease phenotype, with an adverse effect on disease course for Crohn's disease, but a slight beneficial effect in ulcerative colitis. The contribution of infectious agents to susceptibility to IBD appears to be strong. However, the role of nutrition on the etiology and therapy of IBD is not clear. Inconsistencies in environmental risk factors could be due to gene-environment interactions, making it essential to study the role of genetics and environmental contribution to the etiopathology of IBD. Transgenic or knockout mice, such as interleukin-10(-/-), T-cell receptor alpha(-/-), Galphai(2) (-/-) and N-cadherin(-/-), develop colitis-like inflammation similar to humans. Therefore, animal models must be further studied to explore mechanistic interactions.
Collapse
Affiliation(s)
- Farid E Ahmed
- The Brody School of Medicine at East Carolina University, Department of Radiation Oncology, Leo W Jenkins Cancer Center, Greenville, NC 27858, USA.
| |
Collapse
|
37
|
Oliveira J, Busson M, Etain B, Jamain S, Hamdani N, Boukouaci W, Amokrane K, Bennabi M, Le Guen E, Dargél AA, Houenou J, Ivanova R, Bellivier F, Henry C, Kahn JP, Charron D, Krishnamoorthy R, Vervoitte L, Leboyer M, Tamouza R. Polymorphism of Toll-like receptor 4 gene in bipolar disorder. J Affect Disord 2014; 152-154:395-402. [PMID: 24176535 DOI: 10.1016/j.jad.2013.09.043] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/29/2013] [Accepted: 09/30/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Bipolar disorder (BD) is considered as a multifactorial disorder involving complex interactions between genetic and environmental factors, where immune dysfunction is thought to play a key etiopathogenic role. In particular, excess of winter births associated with early-life infections raise the possibility of the implication of innate immunity. Given the pivotal role of Toll-like receptor 4 (TLR-4), a major innate immune sensor molecule, we hypothesized that genetic variations of TLR-4 may be associated to BD. METHODS Genomic DNAs from 572 BD patients and 202 healthy controls (HC) were analyzed for the distribution of six single nucleotides polymorphisms (SNPs) scattered along the TLR-4 locus (rs1927914, rs10759932, rs4986790, rs4986791, rs11536889 and rs11536891). Associations between BD and these polymorphisms were examined using the Chi-square test. RESULTS We found that rs1927914 AA and rs11536891 TT genotype are more frequent in BD patients than in controls (corrected p; pc=.02 and .02 respectively) particularly in early-onset BD patients (pc=.004 and .006) born during the summer season (pc=.02 and .002 respectively). We also found that rs4986790 AG and rs4986791 CT genotypes were significantly associated with presence of autoimmune thyroiditis (pc=.002). LIMITATIONS Our results are to be confirmed by replication in independent BD cohorts. CONCLUSIONS We report for the first time a genetic association between BD and TLR-4 a major player of innate immunity. Possible mechanisms underlying bipolar disorders linking altered TLR-4 expression and increased susceptibility to infections and/or autoimmunity are discussed.
Collapse
Affiliation(s)
- José Oliveira
- INSERM, UMRS 940, Hôpital Saint-Louis, Paris F75010, France; INSERM, U 955, IMRB, Psychiatrie Génétique, Créteil F94000, France; Fondation FondaMental, fondation de coopération scientifique, Créteil, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Mai CW, Kang YB, Pichika MR. Should a Toll-like receptor 4 (TLR-4) agonist or antagonist be designed to treat cancer? TLR-4: its expression and effects in the ten most common cancers. Onco Targets Ther 2013; 6:1573-87. [PMID: 24235843 PMCID: PMC3821792 DOI: 10.2147/ott.s50838] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Toll-like receptor 4 (TLR-4) is well known for its host innate immunity. Despite the fact that TLR-4 activation confers antitumor responses; emerging evidence suggests that TLR-4 is associated with tumor development and progression. It is now clear that overactivation of TLR-4, through various immune mediators, may cause immune response dysfunction, resulting in tumorigenesis. Different cancers could have different extents of TLR-4 involvement during tumorigenesis or tumor progression. In this review, we focus on infection- and inflammation-related TLR-4 activation in noncancer and cancer cells, as well as on the current evidence about the role of TLR-4 in ten of the most common cancers, viz, head and neck cancer, lung cancer, gastrointestinal cancer, liver cancer, pancreatic cancer, skin cancer, breast cancer, ovarian cancer, cervical cancer, and prostate cancer.
Collapse
Affiliation(s)
- Chun Wai Mai
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Yew Beng Kang
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Mallikarjuna Rao Pichika
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
- Correspondence: Mallikarjuna Rao Pichika, Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia, Tel +60 32 731 7208, Fax +60 38 656 7229, Email
| |
Collapse
|
39
|
Suryadevara NC, Neela VSK, Kovvali S, Pydi SS, Jain S, Siva Sai KSR, Valluri VL, Spurgeon AMPJ. Genetic association of G896A polymorphism of TLR4 gene in leprosy through family-based and case-control study designs. Trans R Soc Trop Med Hyg 2013; 107:777-82. [PMID: 24169261 DOI: 10.1093/trstmh/trt084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Polymorphisms in TLR4 may change the function of the protein and alter the efficiency of immune response of host to infection. The high relevance of host gene polymorphisms with outcome of Mycobacterium leprae infection led us to study the genetic association of TLR4 G896A polymorphism in order to identify its risk among contacts of affected leprosy patients. METHODS For case-control study design a total of 628 individuals were recruited; 17 multicase leprosy families which included 32 case-parent trios were considered for family-based study. Genotyping was done using PCR-RFLP method. RESULTS In case-control study AA genotype was positively associated while GA genotype was negatively associated with leprosy. In family based transmission disequilibrium test (TDT) analysis allele G was found to be over transmitted to the affected individuals. CONCLUSION Case-control study suggests that homozygous AA genotype may confer susceptibility and heterozygous GA genotype may confer resistance to leprosy, while allele A was observed to increase risk and that of allele G may confer resistance to leprosy. No strong transmission disequilibrium was detected in family-based TDT analysis, possibly due to lower number of trios. In contrast to case-control data allele G was over transmitted to the affected ones in TDT analysis. To conclude, the frequencies of genotypes in household contacts were almost the same as in leprosy patients, suggesting that contacts with AA genotype may be at higher risk of leprosy and may therefore require prophylactic inputs.
Collapse
|
40
|
Abstract
BACKGROUND Toll-like receptor 4 (TLR4) is a key cell surface receptor which recognizes lipopolysaccharide that leads to activation of innate immune system. Association of single nucleotide polymorphisms (SNPs) in TLR4 gene with the inflammatory bowel disease is influenced by ethnicity of the study population. GOAL To study association of SNPs in TLR4 gene in inflammatory bowel disease patients and to explore the influence of these SNPs on the level of mRNA expression of targeted cytokines in the ulcerative colitis (UC) biopsies. METHODS Two polymorphisms of TLR4 (D299G, T399I) gene were genotyped by PCR-RFLP in 199 UC, 46 Crohn's disease (CD) patients, and 201 healthy controls. Expression of inflammatory cytokines was measured by RT-PCR in UC biopsies. Genotypes and allele frequencies were calculated by the Pearson χ test, Fisher exact test, Student t test, and ANOVA. RESULTS TLR4 variant D299G showed significant association, with UC (P=0.009) and CD (P=0.039). T399I showed significant association with UC (P=0.006) but not with CD patients. Transcription of TLR4 (P=0.0006), tumor necrosis factor-α (P=0.0009), interferon-γ (P=0.028), interleukin (IL)-17 (P=0.01), IL-23 (P=0.0034), and IL-10 (P=0.018) were found to be significantly elevated in UC patients as compared to controls. Among UC patients, AG genotype of D299G was associated with decreased mRNA level of TLR4 (P=0.0069), tumor necrosis factor-α (P=0.018), IL-17 (P=0.017), and IL-23 (P=0.011) as compared to AA genotype patients. In GG genotype interferon-γ expression (P=0.014) was significantly decreased as compared to AA genotype. CONCLUSION Polymorphisms in TLR4 gene were significantly associated with inflammatory bowel disease in North Indian population and they contribute in modulating transcription of inflammatory cytokines during UC leading to aberrant immune response.
Collapse
|
41
|
Manolakis AC, Kapsoritakis AN, Kapsoritaki A, Tiaka EK, Oikonomou KA, Lotis V, Vamvakopoulou D, Davidi I, Vamvakopoulos N, Potamianos SP. Readressing the role of Toll-like receptor-4 alleles in inflammatory bowel disease: colitis, smoking, and seroreactivity. Dig Dis Sci 2013; 58:371-80. [PMID: 22918682 DOI: 10.1007/s10620-012-2348-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 07/28/2012] [Indexed: 12/17/2022]
Abstract
BACKGROUND Toll-like receptor (TLR) polymorphisms, and especially TLR-4 Asp299Gly and TLR-4 Thr399Ile, have been linked with Crohn's disease (CD) and to a lesser extent with ulcerative colitis (UC), CD behavior, and compromised seroreactivity to microbial antigens. Available data, however, are conflicting. AIMS To address these issues, the distribution of TLR-4 polymorphic alleles was assessed in patients with UC, CD, and healthy controls (HC), considering patient and disease characteristics as well as related serological markers. METHODS TLR-4 Asp299Gly and TLR-4 Thr399Ile polymorphisms were determined in 187 UC and 163 CD patients and 274 randomly selected HC. C reactive protein, anti-Saccharomyces cerevisiae mannan antibodies, anti-mannobioside carbohydrate antibodies, anti-laminariobioside carbohydrate antibodies IgG, and anti-chitobioside carbohydrate antibodies (ACCA) IgA levels were also assessed. RESULTS UC and especially pancolitis patients carried the mutant alleles more frequently compared to CD patients and HC or UC patients with different disease extents (P = 0.002 and P < 0.0001, respectively). Involvement of the colon was more frequent in CD patients with mutant TLR-4 compared to those with wild-type alleles (P = 0.004). Levels and positivity rates of ACCA IgA were lower in inflammatory bowel disease (IBD) patients carrying the mutant compared to those with wild-type alleles (0.075 < P < 0.05). Despite the mutant TLR-4 predisposition for UC pancolitis, smoking was associated with more limited disease (P < 0.001). CONCLUSIONS The presence of TLR-4 Asp299Gly and TLR-4 Thr399Ile polymorphisms is related to UC pancolitis, involvement of the colon in CD, and lower ACCA IgA levels. Smoking reduces the extent of UC, even in the presence of mutant alleles.
Collapse
Affiliation(s)
- Anastassios C Manolakis
- Department of Gastroenterology, University Hospital of Larissa, University of Thessaly, School of Medicine, 41110, Larissa, Greece.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Chen L, Lin MJ, Zhan LL, Lv XP. Analysis of TLR4 and TLR2 polymorphisms in inflammatory bowel disease in a Guangxi Zhuang population. World J Gastroenterol 2012; 18:6856-6860. [PMID: 23239925 PMCID: PMC3520176 DOI: 10.3748/wjg.v18.i46.6856] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 10/18/2012] [Accepted: 11/06/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the polymorphisms of toll-like receptor 4 (TLR4) gene Asp299Gly, Thr399Ile and TLR2 gene Arg753Gln, Arg677Trp and susceptibility to inflammatory bowel disease (IBD) in the Zhuang population from Guangxi, China.
METHODS: A case-control study was performed from February 2007 to October 2011 which included 146 Zhuang patients with IBD in the experimental group and 164 healthy Zhuang subjects who acted as the control group. All patients and healthy subjects were from the Guangxi Zhuang Autonomous Region of China. Genomic DNA was extracted from intestinal tissue by the phenol chloroform method. TLR4 gene Asp299Gly, Thr399Ile and TLR2 gene Arg753Gln, Arg677Trp were amplified by polymerase chain reaction (PCR), and then detected by PCR-restriction fragment length polymorphism (RFLP).
RESULTS: The TLR4 gene Asp299Gly was digested using Nco I restriction enzyme, and a single band of 249 bp was observed which showed that it was a wild type (AA). The TLR4 gene Thr399Ile was digested using Hinf Irestriction enzyme and only the wild type (CC) was detected. In addition, the TLR2 gene Arg677Trp was digested using Aci I restriction enzyme and only the wild type (CC) was detected. The TLR2 gene Arg753Gln was digested using Pst I restriction enzyme. Only the wild type (GG) as a single band of 254 bp was observed during RFLP. Overall, no heterozygous or homozygous single nucleotide polymorphism mutations were found in patients with Crohn’s disease and ulcerative colitis both in the TLR4 gene Asp299Gly, Thr399Ile and the TLR2 gene Arg677Trp, Arg753Gln in the Zhuang population from the Guangxi Zhuang Autonomous Region of China.
CONCLUSION: The TLR4 gene Asp299Gly, Thr399Ile and TLR2 gene Arg753Gln, Arg677Trp polymorphisms may not be associated with IBD in the Zhuang population from the Guangxi Zhuang Autonomous Region of China.
Collapse
|
43
|
Dignass A, Eliakim R, Magro F, Maaser C, Chowers Y, Geboes K, Mantzaris G, Reinisch W, Colombel JF, Vermeire S, Travis S, Lindsay JO, Van Assche G. Second European evidence-based consensus on the diagnosis and management of ulcerative colitis part 1: definitions and diagnosis. J Crohns Colitis 2012; 6:965-90. [PMID: 23040452 DOI: 10.1016/j.crohns.2012.09.003] [Citation(s) in RCA: 604] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Accepted: 09/03/2012] [Indexed: 12/12/2022]
Affiliation(s)
- Axel Dignass
- Department of Medicine 1, Agaplesion Markus Hospital, Wilhelm-Epstein-Str. 4, D-60431 Frankfurt/Main, Germany.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Rakhesh M, Cate M, Vijay R, Shrikant A, Shanjana A. A TLR4-interacting peptide inhibits lipopolysaccharide-stimulated inflammatory responses, migration and invasion of colon cancer SW480 cells. Oncoimmunology 2012; 1:1495-1506. [PMID: 23264896 PMCID: PMC3525605 DOI: 10.4161/onci.22089] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Inflammation is a major risk factor for carcinogenesis in patients affected by chronic colitis, yet the molecular mechanisms underlying the progression from chronic inflammation to cancer are not completely understood. Activation of the Toll-like receptor 4 (TLR4)-NFκB signaling axis is associated with inflammation. Thus, we hypothesized that inhibition of TLR4-NFκB signaling might help in limiting inflammatory responses and inflammation-induced oncogenesis. In this work, we studied the effects of a TLR4-interacting surfactant protein A-derived (SPA4) peptide on lipopolysaccharide (LPS)-induced TLR4-NFκB signaling and cancer progression. We first characterized this peptide for its ability to bind the TLR4 ligand-LPS and for physico-chemical characteristics. Inflammation was induced by challenging the colon cancer SW480 cells with Escherichia coli LPS. Cells were then treated with varying amounts of the SPA4 peptide. Changes in the expression of TLR4, interleukin (IL)-1β and IL-6, in intracellular NFκB-related signal transducers (IKBα, p65, phosphorylated IKBα, phosphorylated p65, RelB, COX-2) as well as in the transcriptional activity of NFκB were studied by immunocytochemistry, immunoblotting and NFκB reporter assay, respectively. Simultaneously, the effects on LPS-induced cell migration and invasion were determined. We found that the SPA4 peptide does not bind to LPS. Rather, its binding to TLR4 inhibits the LPS-induced phosphorylation of p65, production of IL-1β and IL-6, activity of NFκB, migration and invasion of SW480 cells. In conclusion, our results suggest that the inhibition of TLR4-NFκB signaling by a TLR4-binding peptide may help for the treatment of chronic inflammation and prevention of inflammation-induced cancer in patients with colitis.
Collapse
Affiliation(s)
- Madhusoodhanan Rakhesh
- Department of Pharmaceutical Sciences; University of Oklahoma Health Sciences Center; Oklahoma City, OK USA
| | - Moriasi Cate
- Department of Molecular and Integrative Physiology; University of Kansas Medical Center; Kansas City, KS USA
| | - Ramani Vijay
- Department of Pharmaceutical Sciences; University of Oklahoma Health Sciences Center; Oklahoma City, OK USA
| | - Anant Shrikant
- Department of Molecular and Integrative Physiology; University of Kansas Medical Center; Kansas City, KS USA
| | - Awasthi Shanjana
- Department of Pharmaceutical Sciences; University of Oklahoma Health Sciences Center; Oklahoma City, OK USA
| |
Collapse
|
45
|
Morita S, Joshita S, Umemura T, Katsuyama Y, Kimura T, Komatsu M, Matsumoto A, Yoshizawa K, Kamijo A, Yamamura N, Tanaka E, Ota M. Association analysis of toll-like receptor 4 polymorphisms in Japanese primary biliary cirrhosis. Hum Immunol 2012; 74:219-22. [PMID: 23142582 DOI: 10.1016/j.humimm.2012.10.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 10/18/2012] [Accepted: 10/26/2012] [Indexed: 12/17/2022]
Abstract
Primary biliary cirrhosis (PBC) is characterized by portal inflammation and immune-mediated destruction of intrahepatic bile ducts that often result in liver failure. Toll-like receptor (TLR) 4 recognizes lipopolysaccharides of Gram-negative bacteria. Infectious agents have been suspected to play a crucial role in PBC pathogenesis since TLR4 expression was found in bile duct epithelial cells and periportal hepatocytes in liver tissues of PBC. To assess the potential contribution of TLR4 SNPs to the development of this disease, we genotyped five SNPs in TLR4 in 261 PBC patients and 359 controls using a TaqMan assay. No significant positive associations with either PBC susceptibility or progression were uncovered. These results indicate that TLR4 polymorphisms do not play a prominent role in the development of PBC in Japanese patients.
Collapse
Affiliation(s)
- Susumu Morita
- Department of Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, Matsumoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Association between CD14 gene C-260T polymorphism and inflammatory bowel disease: a meta-analysis. PLoS One 2012; 7:e45144. [PMID: 23049772 PMCID: PMC3458839 DOI: 10.1371/journal.pone.0045144] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 08/13/2012] [Indexed: 12/11/2022] Open
Abstract
Background The gene encoding CD14 has been proposed as an IBD-susceptibility gene with its polymorphism C-260T being widely evaluated, yet with conflicting results. The aim of this study was to investigate the association between this polymorphism and IBD by conducting a meta-analysis. Methodology/Principal Findings Seventeen articles met the inclusion criteria, which included a total of 18 case-control studies, including 1900 ulcerative colitis (UC) cases, 2535 Crohn's disease (CD) cases, and 4004 controls. Data were analyzed using STATA software. Overall, association between C-260T polymorphism and increased UC risk was significant in allelic comparison (odds ratio [OR] = 1.21, 95% confidence interval [CI]: 1.02–1.43; P = 0.027), homozygote model (OR = 1.44, 95% CI: 1.03–2.01; P = 0.033), as well as dominant model (OR = 1.36, 95% CI: 1.06–1.75; P = 0.016). However, there was negative association between this polymorphism and CD risk across all genetic models. Subgroup analyses by ethnicity suggested the risk-conferring profiles of -260T allele and -260 TT genotype with UC in Asians, but not in Caucasians. There was a low probability of publication bias. Conclusions/Significance Expanding previous results of individual studies, our findings demonstrated that CD14 gene C-260T polymorphism might be a promising candidate marker in susceptibility to UC, especially in Asians.
Collapse
|
47
|
Speca S, Giusti I, Rieder F, Latella G. Cellular and molecular mechanisms of intestinal fibrosis. World J Gastroenterol 2012; 18:3635-61. [PMID: 22851857 PMCID: PMC3406417 DOI: 10.3748/wjg.v18.i28.3635] [Citation(s) in RCA: 177] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Revised: 03/26/2012] [Accepted: 04/09/2012] [Indexed: 02/06/2023] Open
Abstract
Fibrosis is a chronic and progressive process characterized by an excessive accumulation of extracellular matrix (ECM) leading to stiffening and/or scarring of the involved tissue. Intestinal fibrosis may develop in several different enteropathies, including inflammatory bowel disease. It develops through complex cell, extracellular matrix, cytokine and growth factor interactions. Distinct cell types are involved in intestinal fibrosis, such as resident mesenchymal cells (fibroblasts, myofibroblasts and smooth muscle cells) but also ECM-producing cells derived from epithelial and endothelial cells (through a process termed epithelial- and endothelial-mesenchymal transition), stellate cells, pericytes, local or bone marrow-derived stem cells. The most important soluble factors that regulate the activation of these cells include cytokines, chemokines, growth factors, components of the renin-angiotensin system, angiogenic factors, peroxisome proliferator-activated receptors, mammalian target of rapamycin, and products of oxidative stress. It soon becomes clear that although inflammation is responsible for triggering the onset of the fibrotic process, it only plays a minor role in the progression of this condition, as fibrosis may advance in a self-perpetuating fashion. Definition of the cellular and molecular mechanisms involved in intestinal fibrosis may provide the key to developing new therapeutic approaches.
Collapse
|
48
|
Patients with inflammatory bowel disease exhibit dysregulated responses to microbial DNA. PLoS One 2012; 7:e37932. [PMID: 22649567 PMCID: PMC3359330 DOI: 10.1371/journal.pone.0037932] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Accepted: 04/30/2012] [Indexed: 02/06/2023] Open
Abstract
Background A critical role for the gut epithelium lies in its ability to discriminate between pathogens and commensals and respond appropriately. Dysfunctional interactions between microbes and epithelia are believed to have a role in inflammatory bowel disease (IBD). In this study, we analyzed microbiota and gene expression in IBD patients and examined responses of mucosal biopsies to bacterial DNA. Methods Biopsies were taken from non-inflamed areas of the colon in healthy controls (HC) and Crohn's disease (CD) and ulcerative colitis (UC) patients in remission. Biopsies were snap-frozen or cultured with DNA from Lactobacillus plantarum (LP) or Salmonella dublin (SD). Gene expression was analyzed under basal conditions and in response to DNA. Gene networks were analyzed using Ingenuity Pathways software. Mucosal-associated microbiota was analyzed using terminal restriction fragment length polymorphism. Frequency of single nucleotide polymorphisms in NOD2 and TLR9 was assessed. Results Patients with IBD had altered microbiota, enhanced expression of inflammatory genes, and increased correlations between specific gene expression and microbes. Principle component analysis showed CD and UC patients to cluster independently from healthy controls in both gene expression and microbial analysis. DNA from LP stimulated anti-inflammatory pathways in controls and UC patients, but induced an upregulation of IL17A in CD patients. There were no differences in SNP frequencies of TLR9 or NOD2 in the groups. Conclusions Patients with Crohn's disease exhibit altered responses to bacterial DNA. These findings suggest that the gut response to bacterial DNA may depend not only on the specific type of bacterial DNA, but also on the host.
Collapse
|
49
|
CARD15/NOD2, CD14 and toll-like 4 receptor gene polymorphisms in Saudi patients with Crohn's Disease. Int J Mol Sci 2012; 13:4268-4280. [PMID: 22605977 PMCID: PMC3344213 DOI: 10.3390/ijms13044268] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 03/19/2012] [Accepted: 03/20/2012] [Indexed: 01/09/2023] Open
Abstract
Crohn’s disease (CD) is a multifactorial disease with a genetic component and an observed association with genes related to the innate immune response. Polymorphisms in the CARD15/NOD2 gene, in addition to functional variants of the toll-like receptor-4 (TLR4) and CD14 genes, have been associated with the development of Crohn’s disease. There is no information about the frequency of these polymorphisms in the Saudi population. We examined the frequency of the three major CARD15/NOD2 risk alleles (Leu1007fsinsC, Arg702Trp, and Gly908Arg) and the TLR4 (Thr399Il) polymorphism as well as a functional polymorphism in the promoter of the CD14–159C/T in 46 Saudi CD patients and 50 matched controls. Genotyping was performed by allele-specific PCR or by restriction fragment length polymorphism (PCR-RFLP) analysis. The mutant genotype frequencies of the Leu1007fsinsC, Arg702Trp and Gly908Arg in the patient group were 6.5, 21.7 and 6.5%, respectively, compared with frequencies of 0, 4 and 2%, respectively, in the control group. There were 15 patients who carried the mutant alleles for all three CARD15/NOD2 variants, Leu1007fsinsC, Arg702Trp and Gly908Arg, while none of the control candidates carried the three alleles. This genetic study provides evidence that the three major CARD15/NOD2 variant alleles and the CD14 –159C/T polymorphism are associated with Crohn’s disease (CD) susceptibility in the Saudi population; however, there is no evidence that the TLR4 (Thr399Il) or CARD15/NOD2 polymorphisms can be considered risk factors for Crohn’s disease.
Collapse
|
50
|
Noreen M, Shah MAA, Mall SM, Choudhary S, Hussain T, Ahmed I, Jalil SF, Raza MI. TLR4 polymorphisms and disease susceptibility. Inflamm Res 2012; 61:177-88. [PMID: 22277994 DOI: 10.1007/s00011-011-0427-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2011] [Revised: 10/07/2011] [Accepted: 12/22/2011] [Indexed: 12/29/2022] Open
Abstract
Toll-like receptors (TLRs) play a central role in the regulation of the host immune system. Each TLR recognizes specific pathogen-associated molecular patterns (PAMPs). TLR4 is one of the well characterized pathogen recognition receptors (PRRs) that recognizes the lipopolysaccharide (LPS) of Gram-negative bacteria, some conserved structures from fungal to mycobacterial pathogens and some endogenous ligands. A complex signaling cascade initiates after the ligand binds to the TLR4 ectodomain, leading to the activation of multiple inflammatory genes. Genetic variations greatly influence immune responses towards pathogenic challenges and disease outcome. In this review, we summarize various reports regarding TLR4 polymorphisms and disease susceptibility.
Collapse
Affiliation(s)
- Mamoona Noreen
- NUST Centre of Virology and Immunology, National University of Sciences and Technology, H-12, Islamabad, Pakistan.
| | | | | | | | | | | | | | | |
Collapse
|