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Rivera AP, Pellegrini JR, Saggar T, Joy MV, Sinha A, Gomez S, Rizvon K. Going Outside the Gut: Immune Thrombocytopenia Presenting as a Rare Extraintestinal Manifestation of Ulcerative Colitis. Cureus 2024; 16:e61888. [PMID: 38975457 PMCID: PMC11227741 DOI: 10.7759/cureus.61888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2024] [Indexed: 07/09/2024] Open
Abstract
A 26-year-old male with no significant medical history presented with hematochezia and was diagnosed with ulcerative colitis (UC) accompanied by immune thrombocytopenia (ITP) as an extraintestinal manifestation (EIM) of UC. This case report delves into the uncommon overlap between UC, a subtype of inflammatory bowel disease primarily affecting the colon and rectum, and ITP, an autoimmune condition leading to platelet destruction. The patient's atypical presentation and subsequent positive response to a treatment regimen targeting both UC and ITP underscores the necessity for a thorough and multifaceted diagnostic approach in individuals with UC, especially when faced with non-gastrointestinal symptoms like unexplained thrombocytopenia. The findings from this study enhance the understanding of UC's diverse manifestations and highlight its potential intersection with other autoimmune diseases, advocating for integrated care strategies in managing such intricate clinical cases.
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Affiliation(s)
- Ana P Rivera
- Internal Medicine, Nassau University Medical Center, East Meadow, USA
| | - James R Pellegrini
- Gastroenterology and Hepatology, Nassau University Medical Center, East Meadow, USA
| | - Tulika Saggar
- Internal Medicine, Nassau University Medical Center, East Meadow, USA
| | - Melvin V Joy
- Internal Medicine, Nassau University Medical Center, East Meadow, USA
| | - Atul Sinha
- Gastroenterology and Hepatology, Nassau University Medical Center, East Meadow, USA
| | - Sandra Gomez
- Gastroenterology and Hepatology, Nassau University Medical Center, East Meadow, USA
| | - Kaleem Rizvon
- Gastroenterology and Hepatology, Nassau University Medical Center, East Meadow, USA
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Genetic polymorphisms present in IL10, IL23R, NOD2, and ATG16L1 associated with susceptibility to inflammatory bowel disease in Mexican population. Eur J Gastroenterol Hepatol 2020; 32:10-16. [PMID: 31651650 DOI: 10.1097/meg.0000000000001540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Ulcerative colitis and Crohn's disease are the two clinical forms of inflammatory bowel disease (IBD). Diverse studies have shown the association of single nucleotide polymorphism (SNP) in molecules of the immune system and the occurrence of IBD. Here, several SNPs of the immune system with controversial results for their association with UC and CD were evaluated in a Mexican population. METHODS SNPs rs1800896, rs3024505 (IL-10); rs11209026 (IL23R); rs2066844, rs2066845 (NOD-2), and rs2241880 (ATG16L1) were assessed in 93 patients with IBD and 200 healthy controls by hybridization probes and quantitative PCR. RESULTS The AG genotype for rs1800896 was associated with an increased risk for both UC and CD (P = 0.005 and P = 0.026, respectively); whereas the AA genotype presents a negative association (P = 0.011 for UC, and 0.0038 for CD). For this SNP, G allele was associated with risk of UC (P = 0-043) but not for CD. For the rs3024505 in IL-10, T allele was associated with UC (P = 0.011). Moreover, this allele was associated with early onset of UC (P = 0.033) and with the use of steroid treatment (P = 0.019). No significant differences for NOD2 (rs2066844T and rs2066845C), IL23R (rs11209026), and ATG16L1 (rs22411880) were found between cases and controls and the homozygous TT genotype for rs2066844 and CC for rs2066845 were not observed. CONCLUSION Our results show both genotypic and phenotypic associations of IL-10 SNPs with IBD but not with the other immune-related SNPs studied in this Mexican cohort.
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Smart Model to Distinguish Crohn’s Disease from Ulcerative Colitis. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9081650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inflammatory bowel diseases (IBD) is a term referring to chronic and recurrent gastrointestinal disease. It includes Crohn’s disease (CD) and ulcerative colitis (UC). It is undeniable that presenting features may be unclear and do not enable differentiation between disease types. Therefore, additional information, obtained during the analysis, can definitely provide a potential way to differentiate between UC and CD. For that reason, finding the optimal logistic model for further analysis of collected medical data, is a main factor determining the further precisely defined decision class for each examined patient. In our study, 152 patients with CD or UC were included. The collected data concerned not only biochemical parameters of blood but also very subjective information, such as data from interviews. The built-in logistics model with very high precision was able to assign patients to the appropriate group (sensitivity = 0.84, specificity = 0.74, AUC = 0.93). This model indicates factors differentiating between CD and UC and indicated odds ratios calculated for significantly different variables in these two groups. All obtained parameters of the model were checked for statistically significant. The constructed model was able to be distinguish between ulcerative colitis and Crohn’s disease.
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Cucu MG, Streața I, Riza AL, Cimpoeru AL, Șerban-Șoșoi S, Ciocoiu A, Pleșea RM, Popescu EL, Dorobanțu Ș, Anghel A, Stroe AM, Ștefan AN, Cioboată R, Băzăvan I, Ciontea MS, Căpitănescu I, Olteanu M, Nițu M, Burada F, Tătaru T, Netea M, van Crevel R, Olaru M, Mixich F, Ioana M. Polymorphisms in autophagy genes and active pulmonary tuberculosis susceptibility in Romania. REV ROMANA MED LAB 2017. [DOI: 10.1515/rrlm-2017-0002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Autophagy, a homeostatic process involved in nutrient regeneration and immune responses, may be involved in intracellular killing of M. tuberculosis. Several studies linked variation in autophagy genes with susceptibility to pulmonary tuberculosis, but others did not confirm these findings.
We genotyped single nucleotide polymorphisms (SNPs) in the ATG5 (rs2245214, c.574-12777G>C) and NOD2 (rs2066844, c.2104C>T) genes for 256 pulmonary tuberculosis patients and 330 unrelated healthy controls in Romania. Both SNPs have been reported as relevant for the autophagy process and potentially for susceptibility to active pulmonary tuberculosis.
In our study, the polymorphisms in ATG5 and NOD2 were not associated with tuberculosis. This suggests that the two genetic variants we focused on are not related to the risk for developing active TB in a Romanian population.
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Affiliation(s)
| | - Ioana Streața
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | - Anca Lelia Riza
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | | | | | - Adela Ciocoiu
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | | | | | | | - Andreea Anghel
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | - Aida Maria Stroe
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | | | - Ramona Cioboată
- “Victor Babes” Infectious Diseases and Pneumophtisiology Hospital Craiova, Dolj County, Romania
| | - Ileana Băzăvan
- “Victor Babes” Infectious Diseases and Pneumophtisiology Hospital Craiova, Dolj County, Romania
| | | | - Iulia Căpitănescu
- “Tudor Vladimirescu” Pneumophtisiology Hospital Runcu, Gorj County, Romania
| | - Mihai Olteanu
- “Victor Babes” Infectious Diseases and Pneumophtisiology Hospital Craiova, Dolj County, Romania
| | - Mimi Nițu
- “Victor Babes” Infectious Diseases and Pneumophtisiology Hospital Craiova, Dolj County, Romania
| | - Florin Burada
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | | | - Mihai Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Reinout van Crevel
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marian Olaru
- “Victor Babes” Infectious Diseases and Pneumophtisiology Hospital Craiova, Dolj County, Romania
| | - Francisc Mixich
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
| | - Mihai Ioana
- University of Medicine And Pharmacy Craiova, Dolj County, Romania
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Peng LL, Wang Y, Zhu FL, Xu WD, Ji XL, Ni J. IL-23R mutation is associated with ulcerative colitis: A systemic review and meta-analysis. Oncotarget 2017; 8:4849-4863. [PMID: 27902482 PMCID: PMC5354875 DOI: 10.18632/oncotarget.13607] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 11/12/2016] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Since a genome-wide association study revealed that Interleukin-23 receptor (IL-23R) gene is a candidate gene for Ulcerative Colitis (UC), many studies have investigated the association between the IL-23R polymorphisms and UC. However, the results were controversial. The aim of the study was to determine whether the IL-23R polymorphisms confer susceptibility to UC. METHODS A systematic literature search was carried out to identify all potentially relevant studies. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were used to estimate the strength of association. RESULTS A total of 33 studies in 32 articles, including 10,527 UC cases and 15,142 healthy controls, were finally involved in the meta-analysis. Overall, a significant association was found between all UC cases and the rs11209026A allele (OR = 0.665, 95% CI = 0.604~0.733, P < 0.001). Similarly, meta-analyses of the rs7517847, rs1004819, rs10889677, rs2201841, rs11209032, rs1495965, rs1343151 and rs11465804 polymorphisms also indicated significant association with all UC (all P < 0.05). Stratification by ethnicity revealed that the rs11209026, rs7517847, rs10889677, rs2201841 andrs11465804 polymorphisms were associated with UC in the Caucasian group, but not in Asians, while the rs1004819 and rs11209032 polymorphisms were found to be related to UC for both Caucasian and Asian groups. However, subgroup analysis failed to unveil any association between the rs1495965 and rs1343151 polymorphisms and UC in Caucasians or Asians. CONCLUSIONS The meta-analysis suggests significant association between IL-23R polymorphisms and UC, especially in Caucasians.
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Affiliation(s)
- Ling-Long Peng
- Department of Science and Education, The Second People's Hospital of Wuhu, Wuhu, Anhui 241000, China
| | - Ying Wang
- Department of Environmental Health, Suzhou Municipal Center for Disease Prevention and Control, Suzhou, Jiangsu 215004, China
| | - Feng-Ling Zhu
- Department of Science and Education, The Second People's Hospital of Wuhu, Wuhu, Anhui 241000, China
| | - Wang-Dong Xu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xue-Lei Ji
- Department of Science and Education, The Second People's Hospital of Wuhu, Wuhu, Anhui 241000, China
| | - Jing Ni
- The Teaching Centre for Preventive Medicine, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, China
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Al-Anazi MR, Nazir N, Abdo AA, Sanai FM, Alkahtani S, Alarifi S, Alkahtane AA, Al-Yahya H, Ali D, Alessia MS, Al-Ahdal MN, Al-Qahtani AA. Genetic variations of NOD2 and MD2 genes in hepatitis B virus infection. Saudi J Biol Sci 2016; 26:270-280. [PMID: 31485165 PMCID: PMC6717085 DOI: 10.1016/j.sjbs.2016.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/09/2016] [Accepted: 11/09/2016] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES Nucleotide oligomerization domain 2 (NOD2) and myeloid differentiation protein 2 (MD-2) have crucial roles in the innate immune system. NOD2 is a member of the NOD-like receptor (NLR) family of pattern recognition receptors (PRRs), while MD-2 is a co-receptor for Toll-like receptor 4 (TLR4), which comprises another group of PRRs. Genetic variations in the NOD2 and MD-2 genes may be susceptibility factors to viral pathogens including hepatitis B virus (HBV). We investigated whether polymorphisms at NOD2 (rs2066845 and rs2066844) or at MD-2 (rs6472812 and rs11466004) were associated with susceptibility to HBV infection and advancement to related liver complications in a Saudi Arabian population. Methods: A total of 786 HBV-infected patients and 600 healthy uninfected controls were analyzed in the present study. HBV-infected patients were categorized into three groups based on the clinical stage of the infection: inactive HBV carriers, active HBV carriers, and patients with liver cirrhosis + hepatocellular carcinoma (HCC). Results: All four SNPs were significantly associated with susceptibility to HBV infection although none of the SNPs tested in NOD2 and MD-2 were significantly associated with persistence of HBV infection. We found that HBV-infected patients that were homozygous CC for rs2066845 in the NOD2 gene were at a significantly increased risk of progression to HBV-related liver complications (Odds Ratio = 7.443 and P = 0.044). Furthermore, haplotype analysis found that the rs2066844-rs2066845 C-G and T-G haplotypes at the NOD2 gene and four rs6472812-rs11466004 haplotypes (G-C, G-T, A-C, and A-T) at the MD-2 gene were significantly associated with HBV infection in the affected cohort compared to those found in our control group. Conclusion: We found that the single nucleotide polymorphisms rs2066844 and rs2066845 at NOD2 and rs6472812 and rs11466004 at MD-2 were associated with susceptibility to HBV infection in a Saudi population.
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Affiliation(s)
- Mashael R Al-Anazi
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Nyla Nazir
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Ayman A Abdo
- Section of Gastroenterology, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Liver Disease Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Faisal M Sanai
- Gastroenterology Unit, Department of Medicine, King Abdulaziz Medical City, Jeddah, Saudi Arabia.,Liver Disease Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Saad Alkahtani
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah A Alkahtane
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Hamad Al-Yahya
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Daoud Ali
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed S Alessia
- Department of Biology, Science College, AI-Imam Muhammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
| | - Mohammed N Al-Ahdal
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.,Department of Microbiology and Immunology, Alfaisal University School of Medicine, Riyadh, Saudi Arabia
| | - Ahmed A Al-Qahtani
- Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.,Department of Microbiology and Immunology, Alfaisal University School of Medicine, Riyadh, Saudi Arabia
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Randell RL, Gulati AS, Cook SF, Martin CF, Chen W, Jaeger EL, Schoenborn AA, Basta PV, Dejong H, Luo J, Gallant M, Sandler RS, Long MD, Kappelman MD. Collecting Biospecimens From an Internet-Based Prospective Cohort Study of Inflammatory Bowel Disease (CCFA Partners): A Feasibility Study. JMIR Res Protoc 2016; 5:e3. [PMID: 26732016 PMCID: PMC4719077 DOI: 10.2196/resprot.5171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 11/01/2015] [Indexed: 12/27/2022] Open
Abstract
Background The Internet has successfully been used for patient-oriented survey research. Internet-based translational research may also be possible. Objective Our aim was to study the feasibility of collecting biospecimens from CCFA Partners, an Internet-based inflammatory bowel disease (IBD) cohort. Methods From August 20, 2013, to January 4, 2014, we randomly sampled 412 participants, plus 179 from a prior validation study, and invited them to contribute a biospecimen. Participants were randomized to type (blood, saliva), incentive (none, US $20, or US $50), and collection method for blood. The first 82 contributors were also invited to contribute stool. We used descriptive statistics and t tests for comparisons. Results Of the 591 participants, 239 (40.4%) indicated interest and 171 (28.9%) contributed a biospecimen. Validation study participants were more likely to contribute than randomly selected participants (44% versus 23%, P<.001). The return rate for saliva was higher than blood collected by mobile phlebotomist and at doctors’ offices (38%, 31%, and 17% respectively, P<.001). For saliva, incentives were associated with higher return rates (43-44% versus 26%, P=.04); 61% contributed stool. Fourteen IBD-associated single nucleotide polymorphisms were genotyped, and risk allele frequencies were comparable to other large IBD populations. Bacterial DNA was successfully extracted from stool samples and was of sufficient quality to permit quantitative polymerase chain reaction for total bacteria. Conclusions Participants are willing to contribute and it is feasible to collect biospecimens from an Internet-based IBD cohort. Home saliva kits yielded the highest return rate, though mobile phlebotomy was also effective. All samples were sufficient for genetic testing. These data support the feasibility of developing a centralized collection of biospecimens from this cohort to facilitate IBD translational studies.
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Affiliation(s)
- Rachel L Randell
- Department of Pediatrics, Duke University School of Medicine, Duke University, Durham, NC, United States.
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NOD2 Arg702Trp Polymorphism in Romanian Patients with Gastric Cancer. CURRENT HEALTH SCIENCES JOURNAL 2015; 41:307-310. [PMID: 30538835 PMCID: PMC6243512 DOI: 10.12865/chsj.41.04.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 12/01/2015] [Indexed: 11/30/2022]
Abstract
Purpose. Our study aimed to assess a possible correlation between NOD2 Arg702Trp (rs2066844) polymorphism and gastric cancer risk in a Romanian population. Material/Methods. A total of 322 subjects (72 patients with gastric adenocarcinoma and 250 healthy controls) were included. Genomic DNA was extracted from blood leukocytes and NOD2 Arg702Trp polymorphism was genotyped by Real-Time PCR using specific TaqMan probes. Results. No statistically significant difference was observed between gastric cancer patients and controls when we compared one genotype with other genotype (the CC genotype serves as reference) (OR 0.45, 95% CI: 0.10 - 2.05) or when we compared allele frequencies (the C allele serves as reference) (OR 0.46, 95% CI: 0.11 - 2.04). We examined separately the association of this polymorphism with tumor site and histologic type and no correlation was found. Conclusion. NOD2 Arg702Trp polymorphism is not associated with gastric cancer risk and further investigations are needed to elucidate the contribution of NOD2 gene in gastric carcinogenesis.
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Meddour Y, Chaib S, Bousseloub A, Kaddache N, Kecili L, Gamar L, Nakkemouche M, Djidjik R, Abbadi MC, Charron D, Boucekkine TE, Tamouza R. NOD2/CARD15 and IL23R genetic variability in 204 Algerian Crohn's disease. Clin Res Hepatol Gastroenterol 2014; 38:499-504. [PMID: 24679666 DOI: 10.1016/j.clinre.2014.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 01/15/2014] [Accepted: 02/11/2014] [Indexed: 02/04/2023]
Abstract
NOD2/CARD15 and IL23R gene variants play an important role in the susceptibility to Crohn's disease (CD). Studies of genotype-phenotype relationship suggest that these variants are associated with the development of the disease and specific phenotype. Preliminary reports analyzing the association between these variants have never been made on Algerian CD's. In a case-control design, 204 Algerian with CD diagnosed for at least 5years and 201 controls were included were genotyped for single nucleotide polymorphisms (SNP) in the NOD2/CARD15 gene R702W (SNP8, rs2066844), G908R (SNP12, rs2066845) and IL23R R381Q (rs11209026) gene variants were determined using the TaqMan SNP genotyping assays. NOD2/CARD15 908R was carried by 3% of the patients and none in control subjects (χ(2)=8.6, Pc=0.003, OR=13.20). NOD2/CARD15 702W was associated to CD outcome (χ(2)=17.2, Pc=0.00003, OR=12.5) and early onset of disease (group A1, χ(2)=19.3, Pc=1.10(-5), OR=14.05, PM-H=2.10(-6)). IL23R 381Q variants was more frequent in CD's patients than controls (χ(2)=8, Pc=0.005, OR=3.48), it was associated to earlier onset (group A1, χ(2)=7.1, Pc=0.007, OR=1.04, PM-H=0.002), extra-intestinal manifestations (EIM) outcome (χ(2)=10.6, Pc=0.001, OR=1.05, PM-H=0.002) and ileocolonic location (χ(2)=6.8, Pc=0.009, OR=1.05, PM-H=0.001). In this Algerian cohort, NOD2/CARD15 and IL23R variants were associated with CD's outcomes and linked to a particular clinical phenotype.
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Affiliation(s)
- Y Meddour
- Immunology Department, Central Hospital of Army, Algiers, Algeria
| | - S Chaib
- Immunology Department, Central Hospital of Army, Algiers, Algeria
| | - A Bousseloub
- Gastroenterology Department, Central Hospital of Army, Algiers, Algeria
| | - N Kaddache
- Gastroenterology Department, Mustapha Bacha Hospital, Algiers, Algeria
| | - L Kecili
- Gastroenterology Department, Mustapha Bacha Hospital, Algiers, Algeria
| | - L Gamar
- Gastroenterology Department, Mustapha Bacha Hospital, Algiers, Algeria
| | - M Nakkemouche
- Gastroenterology Department, Nafissa Hamoud Hospital, Algiers, Algeria
| | - R Djidjik
- Biology Department, Béni-Messous Hospital, Algiers, Algeria; Immunogenetics and Immunopathology Research Laboratory, Algiers, Algeria.
| | - M C Abbadi
- Immunology Department, Pasteur Institute, Algiers, Algeria; Immunogenetics and Immunopathology Research Laboratory, Algiers, Algeria
| | - D Charron
- Immunology and Histocompatibility Department, CIB-HOB, AP-HP, IUH and INSERM UMRS940, Saint-Louis Hospital, Paris, France
| | - T E Boucekkine
- Gastroenterology Department, Mustapha Bacha Hospital, Algiers, Algeria
| | - R Tamouza
- Immunology and Histocompatibility Department, CIB-HOB, AP-HP, IUH and INSERM UMRS940, Saint-Louis Hospital, Paris, France
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Sun X, Jobin C. Nucleotide-binding oligomerization domain-containing protein 2 controls host response to Campylobacter jejuni in Il10-/- mice. J Infect Dis 2014; 210:1145-54. [PMID: 24620022 DOI: 10.1093/infdis/jiu148] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Innate signaling-induced antimicrobial response represents a key protective host feature against infectious microorganisms such as Campylobacter species. In this study, we investigated the role of nucleotide-binding oligomerization domain-containing protein 2 (NOD2) in Campylobacter jejuni-induced intestinal inflammation. Specific-pathogen-free Il10(-/-), Nod2(-/-), and Il10(-/-); Nod2(-/-) mice were infected with C. jejuni (10(9) colony-forming units/mouse) 24 hours after a 7-day course of antibiotic treatment. Three weeks later, host responses were determined. The nitric oxide (NO) donor sodium nitroprusside was injected intraperitoneally (2 mg/kg daily) to supplement NO. Although healthy in specific-pathogen-free conditions, Il10(-/-); Nod2(-/-) mice developed severe intestinal inflammation following C. jejuni infection, compared with Nod2(-/-) and Il10(-/-) mice. The onset of colitis was associated with elevated neutrophil accumulation, crypt abscesses, and expression of the endogenous proinflammatory mediators Il-1β, Tnfα, and Cxcl1. Fluorescence in situ hybridization and culture assay showed enhanced C. jejuni invasion into the colon and mesenteric lymph nodes in Il10(-/-); Nod2(-/-) mice, compared with Il10(-/-) mice. C. jejuni-induced bactericidal NO production was reduced in peritoneal macrophages from Il10(-/-); Nod2(-/-) mice, compared with Il10(-/-) mice. Importantly, sodium nitroprusside attenuated C. jejuni-induced colitis in Il10(-/-); Nod2(-/-) mice. Our findings suggest that NOD2 signaling is critical to control campylobacteriosis in Il10(-/-) mice, a process involving NOD2-mediated bactericidal responses.
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Affiliation(s)
| | - Christian Jobin
- Department of Medicine Infectious Diseases and Pathology, University of Florida, Gainesville
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11
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Genetic and functional profiling of Crohn's disease: autophagy mechanism and susceptibility to infectious diseases. BIOMED RESEARCH INTERNATIONAL 2013; 2013:297501. [PMID: 23738324 PMCID: PMC3662122 DOI: 10.1155/2013/297501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 03/20/2013] [Indexed: 12/19/2022]
Abstract
Crohn's disease is a complex disease in which genome, microbiome, and environment interact to produce the immunological background of the disease. Disease in childhood is more extensive and characterized by a rapid progression, leading to severe repercussions in the course of the disorder. Several genetic variations have been associated with an increased risk of developing the disease and most of these are also implicated in other autoimmune disorders. The gut has many tiers of defense against incursion by luminal microbes, including the epithelial barrier and the innate and adaptive immune responses. Moreover, recent evidence shows that bacterial and viral infections, as well as inflammasome genes and genes involved in the autophagy process, are implicated in Crohn's disease pathogenesis. The aim of this review is to establish how much the diagnostic system can improve, thus increasing the success of Crohn's disease diagnosis. The major expectation for the near future is to be able to anticipate the possible consequences of the disease already in childhood, thus preventing associated complications, and to choose the best treatment for each patient.
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