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Ouazahrou K, El Bakkouri J, Souali M, Jeddane L, Mokhantar K, Errami A, El Kabli H, Bousfiha AA, Echchilali K. Clinical and serological correlation of systemic sclerosis in Moroccan patients. Rheumatol Adv Pract 2023; 7:rkad036. [PMID: 37091295 PMCID: PMC10115467 DOI: 10.1093/rap/rkad036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/22/2023] [Indexed: 04/05/2023] Open
Abstract
Objective SSc is a CTD characterized by excessive fibrosis of the skin and internal organs, along with microvascular damage, and is often associated with typical autoantibodies. The aim of this study was to analyse the correlation between specific autoantibody profiles, clinical and paraclinical features in Moroccan patients with SSc. Methods We analysed the presence of specific autoantibodies in 46 SSc patients using IIF on HEp-2 cells and immunodot. We then correlated the types of autoantibodies with clinical and laboratory manifestations. Results Among our patients, 86.9% were females. The mean age of patients at diagnosis was 50.21 years, with an average delay to diagnosis of 5 years. The main clinical manifestations found were RP (89.2%), sclerodactyly (84.8%), proximal scleroderma (67.4%), gastrointestinal involvement (50%) and interstitial lung disease (30.4%). According to the specific autoantibody profile, 14 patients were anti-topo I positive (30.4%), 8 anti-RNP (68 kDa/A/C) positive (17.4%) and 6 anti-RNA polymerase III positive (13%). We found a significant association of anti-RNA polymerase III with sclerodactyly and pulmonary arterial hypertension (P < 0.05). We also found an association between anti-topo I and interstitial lung disease in 30.4% of patients. There was no significant association between the positivity for the autoantibodies and other diagnosed clinical manifestations. Conclusion Some clinical manifestations of SSc might be positively correlated with the presence of specific autoantibodies. Environmental factors, ethnicity and gene interaction might also influence this correlation.
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Affiliation(s)
- Kaoutar Ouazahrou
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Jalila El Bakkouri
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
- Immunology Laboratory, IbnRochd University Hospital Center, Casablanca, Morocco
| | - Manal Souali
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Leila Jeddane
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Khaoula Mokhantar
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Abderrahmane Errami
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Hassan El Kabli
- Internal Medicine Department, IbnRochd University Hospital Center, Casablanca, Morocco
| | - Ahmed Aziz Bousfiha
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
- Clinical Immunology Unit P1, IbnRochd University Hospital Center, Mother and Child El Harouchi Hospital, Casablanca, Morocco
| | - Khadija Echchilali
- Laboratory of Clinical Immunology, Inflammation and Allergy, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
- Internal Medicine Department, IbnRochd University Hospital Center, Casablanca, Morocco
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Abstract
Centromeric proteins are the foundation for assembling the kinetochore, a macromolecular complex that is essential for accurate chromosome segregation during mitosis. Anti-centromere antibodies (ACAs) are polyclonal autoantibodies targeting centromeric proteins (CENP-A, CENP-B, CENP-C), predominantly CENP-B, and are highly associated with rheumatologic disease (lcSSc/CREST syndrome). CENP-B autoantibodies have also been reported in cancer patients without symptoms of rheumatologic disease. The rise of oncoimmunotherapy stimulates inquiry into how and why anti-CENP-B autoantibodies are formed. In this review, we describe the clinical correlations between anti-CENP-B autoantibodies, rheumatologic disease, and cancer; the molecular features of CENP-B; possible explanations for autoantigenicity; and, finally, a possible mechanism for induction of autoantibody formation.
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Increased Autoantibodies Against Ro/SS-A, CENP-B, and La/SS-B in Patients With Kidney Allograft Antibody-mediated Rejection. Transplant Direct 2021; 7:e768. [PMID: 34557585 PMCID: PMC8454907 DOI: 10.1097/txd.0000000000001215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/02/2021] [Indexed: 01/20/2023] Open
Abstract
Supplemental Digital Content is available in the text. Antibody-mediated rejection (AMR) causes more than 50% of late kidney graft losses. In addition to anti-human leukocyte antigen (HLA) donor-specific antibodies, antibodies against non-HLA antigens are also linked to AMR. Identifying key non-HLA antibodies will improve our understanding of AMR.
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