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Liang J, Wan L, Yao Y, Cui X, He Y, Li S, Jiang M, Sun Y, Cao H, Lin J. An externally validated clinical-laboratory nomogram for myocardial involvement in adult idiopathic-inflammatory-myopathy patients. Clin Rheumatol 2024; 43:1959-1969. [PMID: 38587715 PMCID: PMC11111495 DOI: 10.1007/s10067-024-06948-x] [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: 05/12/2023] [Revised: 01/09/2024] [Accepted: 03/22/2024] [Indexed: 04/09/2024]
Abstract
OBJECTIVES This study aimed at identifying clinical and laboratory risk factors for myocardial involvement (MI) in idiopathic inflammatory myopathies (IIMs) patients as well as constructing a risk-predicted nomogram for prediction and early identification of MI. METHODS An IIMs cohort in southeastern China was constructed, including 504 adult IIMs patients who met the inclusion and exclusion criteria, and were hospitalized at four divisions of the First Affiliated Hospital, Zhejiang University School of Medicine from January 1st 2018 to April 30st 2022. After dividing patients into the training cohort and the validation cohort, risk factors for MI were identified through least absolute shrinkage and selection operator regression and multivariate logistic regression. A risk-predicted nomogram was established and validated internally and externally for discrimination, calibration and practicability. RESULTS In this cohort, 17.7% of patients developed MI and the survival was significantly inferior to that of IIMs patients without MI (P < 0.001). In the training cohort, age > 55 years old (P < 0.001), disease activity > 10 points (P < 0.001), interleukin-17A (IL-17A) > 7.5 pg/ml (P < 0.001), lactic dehydrogenase (LDH) > 425 U/L (P < 0.001), anti-mitochondrial antibodies (AMAs, P = 0.017), and anti-MDA5 antibody (P = 0.037) were significantly correlated with development of MI. A nomogram was established by including the above values to predict MI and was found efficient in discrimination, calibration, and practicability through internal and external validation. CONCLUSION This study developed and validated a nomogram model to predict the risk of MI in adult IIMs patients, which can benefit the prediction and early identification of MI as well as timely intervention in these patients.
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Affiliation(s)
- Junyu Liang
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Liyan Wan
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Yake Yao
- Department of Respiratory Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao Cui
- Department of Cardiology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ye He
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Shuangshuang Li
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Mengdi Jiang
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Yiduo Sun
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China
| | - Heng Cao
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China.
| | - Jin Lin
- Department of Rheumatology, the First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Zhejiang Province, Hangzhou, 310003, China.
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Behbehani R. Ocular Myasthenia Gravis: A Current Overview. Eye Brain 2023; 15:1-13. [PMID: 36778719 PMCID: PMC9911903 DOI: 10.2147/eb.s389629] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
Ocular myasthenia gravis (OMG) is a neuromuscular disease characterized by autoantibody production against post-synaptic proteins in the neuromuscular junction. The pathophysiological auto-immune mechanisms of myasthenia are diverse, and this is governed primarily by the type of autoantibody production. The diagnosis of OMG relies mainly on clinical assessment, the use of serological antibody assays for acetylcholine receptors (AchR), muscle-specific tyrosine kinase (MusK), and low-density lipoprotein 4 (LPR4). Other autoantibodies against post-synaptic proteins, such as cortactin and agrin, have been detected; however, their diagnostic value and pathogenic effect are not yet clearly defined. Clinical tests such as the ice test and electrophysiologic tests, particularly single-fiber electromyography, have a valuable role in diagnosis. The treatment of OMG is primarily through cholinesterase inhibitors (pyridostigmine), and steroids are frequently required in cases of ophthalmoplegia. Other immunosuppressive therapies include antimetabolites (azathioprine, mycophenolate mofetil, methotrexate) and biological agents such as B-cell depleting agents (Rituximab) and complement inhibitors (eculizumab). Evidence is scarce on the effect of immunosuppressive therapy on altering the natural course of OMG. Clinicians must be vigilant of a myasthenic syndrome in patients using immune-check inhibitors. Reliable and consistent biomarkers are required to assess disease severity and response to therapy to optimize the management of OMG. The purpose of this review is to summarize the current trends and the latest developments in diagnosing and treating OMG.
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Affiliation(s)
- Raed Behbehani
- Neuroophthalmology Unit, Ibn Sina Hospital, Kuwait City, Kuwait,Correspondence: Raed Behbehani, Ibn Sina Hospital, P.O Box 1180, Tel +965 2224 2999, Fax +965 2249 2406, Email
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Liu P, Qi G, Gu S, Dong H, Liu C, Yang H. Single-cell transcriptomics and network pharmacology reveal therapeutic targets of Jianpi Yiqi Bugan Yishen decoction in immune cell subsets of children with myasthenia gravis. Transl Pediatr 2022; 11:1985-2003. [PMID: 36643680 PMCID: PMC9834954 DOI: 10.21037/tp-22-593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Myasthenia gravis (MG) is an acquired autoimmune disease of the neuromuscular junction. As immunosuppressive agents used to treat MG have a significant impact on the growth and development of children, treatment is extremely challenging. Jianpi Yiqi Bugan Yishen Decoction (JYBYD) has been developed to treat MG and has achieved satisfactory results in clinical practice. This study aimed to explore its action mechanism and evaluate its active ingredients and potential therapeutic targets. METHODS Single-cell transcriptome sequencing of peripheral blood immune cells of children with MG was performed to reveal the changes in immune cell profiles before and after JYBYD treatment. Lewis rats were included in the model, with classic MG induced by subcutaneous injection of the immunogen acetylcholine receptor (AChR). Twenty rats were divided into two groups and administered normal saline and JYBYD by gavage daily. RESULTS An increase in cell populations characterized by cortactin expression was observed, which has a potential effect on the recovery of lesions at the neuromuscular junction in patients with MG. Based on the differential expression of genes in various immune cells and the predicted targets of traditional Chinese medicine (TCM) compounds, the possible therapeutic targets of JYBYD in different cell subsets were identified, among which STAT1, MCL1, and FOS were the most frequent. Comprehensive network pharmacological analysis suggested quercetin, luteolin, and resveratrol as important active ingredients of JYBYD for the treatment of children with MG. JYBYD could relieve myasthenia symptoms and reduce the AChR-Ab titer in the rat model. Immunohistochemistry results of the muscle showed that JYBYD treatment decreased the expression of STAT1, MCL1, and c-FOS proteins in the muscles of MG rat models. CONCLUSIONS The results of this study are of significance for the clinical application of JYBYD and drug development against MG in children.
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Affiliation(s)
- Peng Liu
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China.,Hebei Provincial Key Laboratory of Myasthenia Gravis, Shijiazhuang, China
| | - Guoyan Qi
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China.,Hebei Provincial Key Laboratory of Myasthenia Gravis, Shijiazhuang, China.,Hebei Provincial Clinical Research Center for Myasthenia Gravis, Shijiazhuang, China
| | - Shanshan Gu
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China.,Hebei Provincial Clinical Research Center for Myasthenia Gravis, Shijiazhuang, China
| | - Huimin Dong
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China
| | - Chaoying Liu
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China.,Hebei Provincial Key Laboratory of Myasthenia Gravis, Shijiazhuang, China
| | - Hongxia Yang
- Center of Treatment of Myasthenia Gravis, People's Hospital of Shijiazhuang Affiliated to Hebei Medical University, Shijiazhuang, China
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Sherman MA, Graf R, Sabbagh SE, Galindo-Feria AS, Pinal-Fernandez I, Pak K, Kishi T, Flegel WA, Targoff IN, Miller FW, Lundberg IE, Rider LG, Mammen AL. Anti-FHL1 autoantibodies in juvenile myositis are associated with anti-Ro52 autoantibodies but not with severe disease features. Rheumatology (Oxford) 2022; 62:SI226-SI234. [PMID: 35961028 PMCID: PMC9949705 DOI: 10.1093/rheumatology/keac428] [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: 05/04/2022] [Revised: 07/17/2022] [Accepted: 07/17/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Four-and-a-half LIM domains 1 (FHL1) is a muscle-specific protein. Autoantibodies against FHL1 were recently discovered in adults with idiopathic inflammatory myopathies (IIMs) and were found to be associated with clinical features and outcomes indicative of increased disease severity. Anti-FHL1 autoantibodies have not been described in children. Here, the prevalence and clinical features associated with anti-FHL1 autoantibodies were examined in a large North American cohort of juvenile patients with IIM. METHODS Sera from 338 juvenile IIM patients and 91 juvenile healthy controls were screened for anti-FHL1 autoantibodies by ELISA. Clinical characteristics and HLA alleles of those with and without anti-FHL1 autoantibodies were compared among those with juvenile IIM. RESULTS Anti-FHL1 autoantibodies were present in 10.9% of juvenile IIM patients and 1.1% of controls. The frequency of anti-FHL1 autoantibodies among clinical and serologic subgroups did not differ. A higher percentage of Asian patients had anti-FHL1 autoantibodies (11% vs 0.7%; P = 0.002). Myositis-associated autoantibodies (MAAs) [odds ratio (OR) 2.09 (CI 1.03, 4.32)], anti-Ro52 autoantibodies specifically [OR 4.17 (CI 1.83, 9.37)] and V-sign rash [OR 2.59 (CI 1.22, 5.40)] were associated with anti-FHL1 autoantibodies. There were no differences in other features or markers of disease severity. No HLA associations with anti-FHL1 autoantibodies in Caucasian myositis patients were identified. CONCLUSION Anti-FHL1 autoantibodies are present in ∼11% of juvenile IIM patients and commonly co-occur with MAAs, including anti-Ro52 autoantibodies. In contrast to adult IIM, anti-FHL1 autoantibodies in juvenile myositis are associated with V-sign rash but not with other distinctive clinical features or worse outcomes.
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Affiliation(s)
- Matthew A Sherman
- Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
| | | | | | - Angeles S Galindo-Feria
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet,Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | | | - Katherine Pak
- Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
| | - Takayuki Kishi
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences
| | - Willy A Flegel
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD
| | - Ira N Targoff
- Veteran's Affairs Medical Center, University of Oklahoma Health Sciences Center, and Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Frederick W Miller
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences
| | - Ingrid E Lundberg
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet,Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | | | - Andrew L Mammen
- Correspondence to: Andrew L. Mammen, Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Expression, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, 50 South Drive, Room 1141, Building 50, MSC 8024, Bethesda, MD 20892, USA. E-mail:
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Damoiseaux J, Mammen AL, Piette Y, Benveniste O, Allenbach Y. 256th ENMC international workshop: Myositis specific and associated autoantibodies (MSA-ab): Amsterdam, The Netherlands, 8-10 October 2021. Neuromuscul Disord 2022; 32:594-608. [DOI: 10.1016/j.nmd.2022.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/12/2022] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
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