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Ahmadi P, Mahmoudi M, Kheder RK, Faraj TA, Mollazadeh S, Abdulabbas HS, Esmaeili SA. Impacts of Porphyromonas gingivalis periodontitis on rheumatoid arthritis autoimmunity. Int Immunopharmacol 2023; 118:109936. [PMID: 37098654 DOI: 10.1016/j.intimp.2023.109936] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/08/2023] [Accepted: 02/22/2023] [Indexed: 03/17/2023]
Abstract
In RA patients' synovial sites, citrullinated RA-related antigens such as type II collagens, fibrin (ogen), vimentin, and α-enolase could be targeted by ACCPAs. Since ACCPA production can be initiated a long time before RA sign appearance, primary auto-immunization against these citrullinated proteins can be originated from extra-articular sites. It has been shown that there is a significant association between P. gingivalis periodontitis, anti- P. gingivalis antibodies, and RA. P. gingivalis gingipains (Rgp, Kgp) can degrade proteins such as fibrin and α-enolase into some peptides in the form of Arg in the C-terminal which is converted to citrulline by PPAD. Also, PPAD can citrullinate type II collagen and vimentins (SA antigen). P. gingivalis induces inflammation and chemoattraction of immune cells such as neutrophils and macrophages through the increase of C5a (gingipain C5 convertase-like activity) and SCFA secretion. Besides, this microorganism stimulates anoikis, a special type of apoptosis, and NETosis, an antimicrobial form of neutrophil death, leading to the release of PAD1-4, α-enolase, and vimentin from apoptotic cells into the periodontal site. In addition, gingipains can degrade macrophages CD14 and decrease their ability in apoptotic cell removal. Gingipains also can cleave IgGs in the Fc region and transform them into rheumatoid factor (RF) antigens. In the present study, the effects of P. gingivalis on rheumatoid arthritis autoimmune response have been reviewed, which could attract practical insight both in bench and clinic.
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Affiliation(s)
- Parisa Ahmadi
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Mahmoudi
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ramiar Kamal Kheder
- Medical Laboratory Science Department, College of Science, University of Raparin, Rania, Sulaymaniyah, Iraq; Department of Medical Analysis, Faculty of Applied Science, Tishk International University, Erbil, Iraq
| | - Tola Abdulsattar Faraj
- Department of Medical Analysis, Faculty of Applied Science, Tishk International University, Erbil, Iraq; Department of Basic Sciences, College of Medicine, Hawler Medical University, Erbil, Iraq
| | - Samaneh Mollazadeh
- Natural Products and Medicinal Plants Research center north Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Hadi Sajid Abdulabbas
- Continuous Education Department, Faculty of Dentistry, University of Al-Ameed, Karbala 56001, Iraq
| | - Seyed-Alireza Esmaeili
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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Florescu A, Gherghina FL, Mușetescu AE, Pădureanu V, Roșu A, Florescu MM, Criveanu C, Florescu LM, Bobircă A. Novel Biomarkers, Diagnostic and Therapeutic Approach in Rheumatoid Arthritis Interstitial Lung Disease-A Narrative Review. Biomedicines 2022; 10:biomedicines10061367. [PMID: 35740390 PMCID: PMC9219939 DOI: 10.3390/biomedicines10061367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 12/25/2022] Open
Abstract
Rheumatoid arthritis (RA) is considered a systemic inflammatory disease marked by polyarthritis which affects the joints symmetrically, leading to progressive damage of the bone structure and eventually joint deformity. Lung involvement is the most prevalent extra-articular feature of RA, affecting 10-60% of patients with this disease. In this review, we aim to discuss the patterns of RA interstitial lung disease (ILD), the molecular mechanisms involved in the pathogenesis of ILD in RA, and also the therapeutic challenges in this particular extra-articular manifestation. The pathophysiology of RA-ILD has been linked to biomarkers such as anti-citrullinated protein antibodies (ACPAs), MUC5B mutation, Krebs von den Lungen 6 (KL-6), and other environmental factors such as smoking. Patients at the highest risk for RA-ILD and those most likely to advance will be identified using biomarkers. The hope is that finding biomarkers with good performance characteristics would help researchers better understand the pathophysiology of RA-ILD and, in turn, lead to the development of tailored therapeutics for this severe RA manifestation.
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Affiliation(s)
- Alesandra Florescu
- Department of Rheumatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.F.); (A.R.); (C.C.)
| | - Florin Liviu Gherghina
- Department of Physical Medicine and Rehabilitation, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Anca Emanuela Mușetescu
- Department of Rheumatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.F.); (A.R.); (C.C.)
- Correspondence: (A.E.M.); (V.P.)
| | - Vlad Pădureanu
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Correspondence: (A.E.M.); (V.P.)
| | - Anca Roșu
- Department of Rheumatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.F.); (A.R.); (C.C.)
| | - Mirela Marinela Florescu
- Department of Pathology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Cristina Criveanu
- Department of Rheumatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.F.); (A.R.); (C.C.)
| | - Lucian-Mihai Florescu
- Department of Radiology and Medical Imaging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Anca Bobircă
- Department of Rheumatology and Internal Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
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Li H, Li L, Liu C, Cheng L, Yan S, Chen H, Li Y. Diagnostic value of anti-citrullinated α-enolase peptide 1 antibody in patients with rheumatoid arthritis: A systematic review and meta-analysis. Int J Rheum Dis 2021; 24:633-646. [PMID: 33713557 PMCID: PMC8252446 DOI: 10.1111/1756-185x.14093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/18/2021] [Accepted: 02/15/2021] [Indexed: 12/27/2022]
Abstract
Aim To evaluate the diagnostic value of anti‐citrullinated α‐enolase peptide 1 (anti‐CEP 1) antibody in patients with rheumatoid arthritis (RA) by conducting a systematic review and meta‐analysis. Methods The PubMed, Web of Science, Embase, Scopus, and Cochrane Library databases were searched for relevant studies published until September 23, 2020. A bivariate mixed‐effects model was used to calculate the diagnostic indices from primary data of eligible studies. We performed meta‐regression and subgroup analysis to explore the sources of heterogeneity. Results Twenty‐four articles, with a total of 17 380 patients with RA and 7505 control participants, met the criteria for inclusion in the meta‐analysis. The pooled sensitivity, specificity, and positive and negative likelihood ratios for the anti‐CEP 1 antibody were 44% (95% CI: 38%‐51%), 97% (95% CI: 96%‐98%), and 14.81 (95% CI: 10.66‐20.57) and 0.57 (95% CI: 0.52‐0.64), respectively. The pooled positive and negative predictive values were 0.96 (95% CI: 0.95‐0.97) and 0.53 (95% CI: 0.43‐0.63), respectively. The area under the summary receiver operating characteristic curve was 0.86. Meta‐regression indicated that the anti‐CEP 1 antibody detection method may be a source of heterogeneity. The subgroup analysis of the group in which the anti‐CEP 1 antibody was detected by using a commercial enzyme‐linked immunosorbent assay (ELISA) kit had a sensitivity of 59% (95% CI: 50%‐68%) and a specificity of 93% (95% CI: 85%‐97%). Conclusions The anti‐CEP 1 antibody had moderate RA diagnostic value with relatively low sensitivity and high specificity. An ELISA may increase the RA diagnostic sensitivity.
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Affiliation(s)
- Haolong Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
| | - Liubing Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
| | - Chenxi Liu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
| | - Linlin Cheng
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
| | - Songxin Yan
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
| | - Haizhen Chen
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China.,Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin, China
| | - Yongzhe Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China
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