1
|
Khojah A, Pachman LM, Bukhari A, Trinh C, Morgan G, Pandey S, Le Poole IC, Klein-Gitelman MS. Decreased Peripheral Blood Natural Killer Cell Count in Untreated Juvenile Dermatomyositis Is Associated with Muscle Weakness. Int J Mol Sci 2024; 25:7126. [PMID: 39000234 PMCID: PMC11241205 DOI: 10.3390/ijms25137126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/20/2024] [Accepted: 06/22/2024] [Indexed: 07/16/2024] Open
Abstract
Juvenile Dermatomyositis (JDM) is the most common inflammatory myopathy in pediatrics. This study evaluates the role of Natural Killer (NK) cells in Juvenile Dermatomyositis (JDM) pathophysiology. The study included 133 untreated JDM children with an NK cell count evaluation before treatment. NK cell subsets (CD56low/dim vs. CD 56bright) were examined in 9 untreated children. CD56 and perforin were evaluated in situ in six untreated JDM and three orthopedic, pediatric controls. 56% of treatment-naive JDM had reduced circulating NK cell counts, designated "low NK cell". This low NK group had more active muscle disease compared to the normal NK cell group. The percentage of circulating CD56low/dim NK cells was significantly lower in the NK low group than in controls (0.55% vs. 4.6% p < 0.001). Examination of the untreated JDM diagnostic muscle biopsy documented an increased infiltration of CD56 and perforin-positive cells (p = 0.023, p = 0.038, respectively). Treatment-naive JDM with reduced circulating NK cell counts exhibited more muscle weakness and higher levels of serum muscle enzymes. Muscle biopsies from treatment-naive JDM displayed increased NK cell infiltration, with increased CD56 and perforin-positive cells.
Collapse
Affiliation(s)
- Amer Khojah
- Department of Pediatrics, College of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia;
- Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, 225 East Chicago Avenue, Box 50, Chicago, IL 60611, USA
| | - Lauren M. Pachman
- Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, 225 East Chicago Avenue, Box 50, Chicago, IL 60611, USA
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Ameera Bukhari
- College of Science, Taif University, Taif 21944, Saudi Arabia
| | - Chi Trinh
- Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, 225 East Chicago Avenue, Box 50, Chicago, IL 60611, USA
- Wellesley College, 106 Central St, Wellesley, MA 02481, USA
| | - Gabrielle Morgan
- Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, 225 East Chicago Avenue, Box 50, Chicago, IL 60611, USA
| | - Surya Pandey
- Robert H. Lurie Comprehensive Cancer Center, Skin Biology and Diseases Resource-Based Center, Chicago, IL 60611, USA
| | - I. Caroline Le Poole
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Robert H. Lurie Comprehensive Cancer Center, Skin Biology and Diseases Resource-Based Center, Chicago, IL 60611, USA
| | - Marisa S. Klein-Gitelman
- Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, 225 East Chicago Avenue, Box 50, Chicago, IL 60611, USA
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| |
Collapse
|
2
|
Essouma M. Autoimmune inflammatory myopathy biomarkers. Clin Chim Acta 2024; 553:117742. [PMID: 38176522 DOI: 10.1016/j.cca.2023.117742] [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: 07/18/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024]
Abstract
The autoimmune inflammatory myopathy disease spectrum, commonly known as myositis, is a group of systemic diseases that mainly affect the muscles, skin and lungs. Biomarker assessment helps in understanding disease mechanisms, allowing for the implementation of precise strategies in the classification, diagnosis, and management of these diseases. This review examines the pathogenic mechanisms and highlights current data on blood and tissue biomarkers of autoimmune inflammatory myopathies.
Collapse
Affiliation(s)
- Mickael Essouma
- Network of Immunity in Infections, Malignancy and Autoimmunity, Universal Scientific Education and Research Network, Cameroon
| |
Collapse
|
3
|
Yamamoto S, Yoshida A, Gono T, Kuwana M. The Role of Environmental Factors in the Development of Idiopathic Inflammatory Myopathies: a Narrative Review. Curr Rheumatol Rep 2023; 25:264-275. [PMID: 37971581 DOI: 10.1007/s11926-023-01120-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] [Accepted: 10/24/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE OF REVIEW This review aims to evaluate recent findings on the role of environmental factors in the development and clinical presentation of idiopathic inflammatory myopathies (IIMs). RECENT FINDINGS A targeted literature review was conducted to identify reports relevant to the association between environmental factors and IIMs published over the past three years. There has been an increasing number of publications dealing with the association of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection or vaccination with the development of IIMs, highlighting the significant role of the antiviral immune response in the pathogenesis of the disease. Traditional environmental factors associated with the pathogenic process of IIM subclassifications included drugs such as statins and immune checkpoint inhibitors, ultraviolet radiation, smoking, air pollutants, and vitamin D deficiency. Correlations of seasonality and residence with the onset of certain IIM subtypes suggest a potential role of environmental triggers in the pathogenic process. An interplay between genetic predisposition and various environmental factors might contribute to the development of IIMs as well as the heterogeneous clinical and serological presentation of IIMs. The growing evidence on the role of environmental factors in the development of IIMs provides important clues to elucidate the pathophysiology of these disease entities. The mechanisms underlying the interactions between genetic predisposition and environmental factors should be investigated in the future.
Collapse
Affiliation(s)
- Shintaro Yamamoto
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Akira Yoshida
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Takahisa Gono
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
- Scleroderma/Myositis Center of Excellence, Nippon Medical School Hospital, Tokyo, Japan
| | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan.
- Scleroderma/Myositis Center of Excellence, Nippon Medical School Hospital, Tokyo, Japan.
| |
Collapse
|