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Musai J, Mammen AL, Pinal-Fernandez I. Recent Updates on the Pathogenesis of Inflammatory Myopathies. Curr Rheumatol Rep 2024:10.1007/s11926-024-01164-7. [PMID: 39316320 DOI: 10.1007/s11926-024-01164-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2024] [Indexed: 09/25/2024]
Abstract
PURPOSE OF REVIEW This review aims to provide a comprehensive and updated overview of autoimmune myopathies, with a special focus on the latest advancements in understanding the role of autoantibodies. We will begin by examining the risk factors and triggers associated with myositis. Next, we will delve into recent research on how autoantibodies contribute to disease pathogenesis. Finally, we will explore the latest innovations in treatment strategies and their implications for our understanding of myositis pathogenesis. RECENT FINDINGS Recent research has revealed that myositis-specific autoantibodies can infiltrate muscle cells and disrupt the function of their target autoantigens, playing a crucial role in disease pathogenesis. Significant advances in treatment include CD19 CAR-T cell therapy, JAK-STAT inhibitors, and novel strategies targeting the type 1 interferon pathway in dermatomyositis. Additionally, the ineffectiveness of complement inhibitors in treating immune-mediated necrotizing myositis has challenged established views on disease mechanisms. Autoimmune myopathies are a collection of disorders significantly influenced by specific autoantibodies that drive disease pathogenesis. This review highlights the critical role of autoantibody research in deepening our understanding of these conditions and discusses recent therapeutic advancements targeting key pathogenic pathways.
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Affiliation(s)
- Jon Musai
- Muscle Disease Section, 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
| | - Andrew L Mammen
- Muscle Disease Section, 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.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Iago Pinal-Fernandez
- Muscle Disease Section, 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.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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2
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Valões CCM, Arabi TM, Braga ALF, Campos LMA, Aikawa NE, Kozu KT, Silva CA, Farhat SCL, Elias AM. The influence of environmental factors related to Juvenile Dermatomyositis (JDM), its course and refractoriness to treatment. Adv Rheumatol 2024; 64:64. [PMID: 39215374 DOI: 10.1186/s42358-024-00408-5] [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: 03/14/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024] Open
Abstract
OBJECTIVE To evaluate the influence of environmental factors and prematurity relating to juvenile dermatomyositis (JDM), its course and refractoriness to treatment. METHODS A case-control study with 35 patients followed up at a tertiary hospital and 124 healthy controls, all residents of São Paulo. Patients were classified according to monocyclic, polycyclic or chronic disease courses and refractoriness to treatment. The daily concentrations of pollutants (inhalable particulate matter-PM10, sulfur dioxide-SO2, nitrogen dioxide-NO2, ozone-O3 and carbon monoxide-CO) were provided by the Environmental Company of São Paulo. Data from the population were obtained through a questionnaire. RESULTS Fifteen patients had monocyclic courses, and 19 polycyclic/chronic courses. Eighteen patients were refractory to treatment. Maternal occupational exposure to inhalable agents (OR = 17.88; IC 95% 2.15-148.16, p = 0.01) and exposure to O3 in the fifth year of life (third tertile > 86.28µg/m3; OR = 6.53, IC95% 1.60-26.77, p = 0.01) were risk factors for JDM in the multivariate logistic regression model. The presence of a factory/quarry at a distance farther than 200 meters from daycare/school (OR = 0.22; IC 95% 0.06-0.77; p = 0.02) was a protective factor in the same analysis. Prematurity, exposure to air pollutants/cigarette smoke/sources of inhalable pollutants in the mother's places of residence and work during the gestational period were not associated with JDM. Prematurity, maternal exposure to occupational pollutants during pregnancy as well as patient's exposure to ground-level pollutants up to the fifth year of life were not associated with disease course and treatment refractoriness. CONCLUSION Risk factors for JDM were maternal occupational exposure and exposure to O3 in the fifth year of life.
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Affiliation(s)
- Clarissa C M Valões
- Hospital da Criança, Avenida Juca Sampaio, 67, Jacintinho Maceió, AL, 57042-530, Brazil.
| | - Tamima M Arabi
- Rheumatology Unit, Child and Adolescent Institute, Hospital das Clínicas, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Alfésio L F Braga
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Lúcia M A Campos
- Rheumatology Unit, Child and Adolescent Institute, Hospital das Clínicas, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Nádia E Aikawa
- Rheumatology Unit, Child and Adolescent Institute and Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Kátia T Kozu
- Rheumatology Unit, Child and Adolescent Institute, Hospital das Clínicas, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Clovis A Silva
- Rheumatology Unit, Child and Adolescent Institute, Hospital das Clínicas, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Sylvia C L Farhat
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Adriana M Elias
- Rheumatology Unit, Child and Adolescent Institute, Hospital das Clínicas, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
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3
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Opinc-Rosiak AH, Makowska JS. Environmental exposures as risk factors for idiopathic inflammatory myopathies. J Autoimmun 2023; 140:103095. [PMID: 37797402 DOI: 10.1016/j.jaut.2023.103095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 07/25/2023] [Indexed: 10/07/2023]
Abstract
Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of rare autoimmune diseases, with increasing incidence rates observed in the recent years. The pathogenesis of IIM remains not fully understood, and the interaction of genetic and environmental factors is suspected. It is unclear whether the observed upward trend in the IIM incidence is solely due to improved access to effective diagnostics or perhaps due to increased exposure to external risk factors. The PUBMED database was thoroughly searched for articles describing environmental exposures potentially triggering the onset of IIM. The article summarizes the current knowledge available on this subject, taking into account various environmental factors, including among others UV radiation, infectious agents with SARS-CoV-2, inhaled particles, or iatrogenic effects. Limitations and unmet needs requiring further studies were highlighted.
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Affiliation(s)
| | - Joanna S Makowska
- Department of Rheumatology, Medical University of Lodz, Zeromskiego 113, 90-549, Lodz, Poland.
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Papadopoulou C, Chew C, Wilkinson MGL, McCann L, Wedderburn LR. Juvenile idiopathic inflammatory myositis: an update on pathophysiology and clinical care. Nat Rev Rheumatol 2023; 19:343-362. [PMID: 37188756 PMCID: PMC10184643 DOI: 10.1038/s41584-023-00967-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2023] [Indexed: 05/17/2023]
Abstract
The childhood-onset or juvenile idiopathic inflammatory myopathies (JIIMs) are a heterogenous group of rare and serious autoimmune diseases of children and young people that predominantly affect the muscles and skin but can also involve other organs, including the lungs, gut, joints, heart and central nervous system. Different myositis-specific autoantibodies have been identified that are associated with different muscle biopsy features, as well as with different clinical characteristics, prognoses and treatment responses. Thus, myositis-specific autoantibodies can be used to subset JIIMs into sub-phenotypes; some of these sub-phenotypes parallel disease seen in adults, whereas others are distinct from adult-onset idiopathic inflammatory myopathies. Although treatments and management have much improved over the past decade, evidence is still lacking for many of the current treatments and few validated prognostic biomarkers are available with which to predict response to treatment, comorbidities (such as calcinosis) or outcome. Emerging data on the pathogenesis of the JIIMs are leading to proposals for new trials and tools for monitoring disease.
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Affiliation(s)
- Charalampia Papadopoulou
- Department of Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust (GOSH), London, UK
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK
| | - Christine Chew
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Meredyth G Ll Wilkinson
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, London, UK
- Infection Immunity and Inflammation Research and Teaching Department, UCL GOS Institute of Child Health, London, UK
| | - Liza McCann
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
| | - Lucy R Wedderburn
- Department of Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust (GOSH), London, UK.
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK.
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, London, UK.
- Infection Immunity and Inflammation Research and Teaching Department, UCL GOS Institute of Child Health, London, UK.
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Gruca M, Zamojska J, Niewiadomska-Jarosik K, Wosiak A, Stasiak A, Sikorska K, Stańczyk J, Smolewska E. Assessment of Cardiovascular Risk Factors in Patients with Juvenile Idiopathic Arthritis. Nutrients 2023; 15:nu15071700. [PMID: 37049540 PMCID: PMC10096608 DOI: 10.3390/nu15071700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
Introduction: The aim of this study was to assess the exposure to cardiovascular disease (CVD) risk factors in patients with juvenile idiopathic arthritis (JIA). Intima–media complex thickness (IMT), selected metabolic parameters and health behaviors were assessed in the course of the study. Methods: The study included study group, which consisted of 45 patients with JIA and 37 healthy age- and sex-matched children in the control group. Analyses in both groups included anthropometric parameters, laboratory tests, IMT and a questionnaire on exposure to modifiable CVD risk factors. Results: The study confirmed that CVD risk factors were present in both groups of patients. Significantly more children with JIA had abnormal BMI (p = 0.006) compared to the control group. Children in the study group were more likely to consume fruit regularly (p = 0.021) and less likely to consume fast food (p = 0.011) and sweetened beverages (p = 0.042) than children in the control group. Only 1 patient with JIA met criteria for ideal cardiovascular health. Dietary habits were not associated with IMT values, BMI, presence of joint pain or biochemical parameters in the study group. Conclusions: Patients with JIA are exposed to cardiovascular risk factors equally to their healthy peers. Ideal cardiovascular health should be pursued in the pediatric population with particular attention paid to patients with chronic diseases (i.e., JIA). The application of carotid artery IMT measurement in the assessment of CVD risk requires studies on a larger group of patients.
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Affiliation(s)
- Marta Gruca
- Department of Pediatric Cardiology and Rheumatology, Medical University of Lodz, Sporna 36/50, 91-738 Lodz, Poland
- Correspondence:
| | - Justyna Zamojska
- Department of Pediatric Cardiology and Rheumatology, Medical University of Lodz, Sporna 36/50, 91-738 Lodz, Poland
| | | | - Agnieszka Wosiak
- Institute of Information Technology, Lodz University of Technology, 91-738 Lodz, Poland
| | - Aleksandra Stasiak
- Department of Pediatric Cardiology and Rheumatology, Medical University of Lodz, Sporna 36/50, 91-738 Lodz, Poland
| | - Karolina Sikorska
- Paediatric Department, Independent Public Health Care Complex in Minsk Mazowiecki, Szpitalna 37, 05-300 Warsaw, Poland
| | - Jerzy Stańczyk
- Department of Pediatric Cardiology and Rheumatology, Medical University of Lodz, Sporna 36/50, 91-738 Lodz, Poland
| | - Elżbieta Smolewska
- Department of Pediatric Cardiology and Rheumatology, Medical University of Lodz, Sporna 36/50, 91-738 Lodz, Poland
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Grover KM, Sripathi N. Prevention of Adverse Outcomes and Treatment Side Effects in Patients with Neuromuscular Disorders. Semin Neurol 2022; 42:594-610. [PMID: 36400111 DOI: 10.1055/s-0042-1758779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, we review prevention of serious adverse clinical outcomes and treatment side effects in patients with neuromuscular disorders including myopathies and myasthenia gravis. While neither of these entities is preventable, their course can often be modified, and severe sequelae may be prevented, with the identification of risk factors and proactive attention toward treatment planning.
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Affiliation(s)
- Kavita M Grover
- Department of Neurology, Henry Ford Medical Group, Wayne State University, Detroit, Michigan
| | - Naganand Sripathi
- Department of Neurology, Henry Ford Medical Group, Wayne State University, Detroit, Michigan
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Cancarini P, Nozawa T, Whitney K, Bell-Peter A, Marcuz JA, Taddio A, Guo J, Dover S, Feldman BM. The clinical features of juvenile dermatomyositis: A single-centre inception cohort. Semin Arthritis Rheum 2022; 57:152104. [PMID: 36183479 DOI: 10.1016/j.semarthrit.2022.152104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 08/30/2022] [Accepted: 09/21/2022] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Juvenile Dermatomyositis (JDM), a severe and rare autoimmune disease, is the most common idiopathic inflammatory myopathy in children. We describe the clinical features of a large single-centre cohort. METHODS We studied an inception cohort (0-18 years old) referred for diagnosis to the JDM clinic at The Hospital for Sick Children (SickKids), between January 1989 and September 2017. Probable or definite diagnosis of JDM was done according to the 2017 ACR/EULAR Criteria. We excluded children who had treatment started at another hospital. The data were collected retrospectively from clinical charts and the SickKids JDM database. RESULTS 172/230 (74.8%) patients were included. They were most often female (female:male = 1.8:1); the age at diagnosis was 8.5±4.3 years. There was a positive family history for autoimmune disease in 52%, mainly rheumatoid arthritis. No patient died. The most common signs at inception were muscle weakness (85.5%), nailfold capillary abnormalities (83.4%), Gottron papules (78.5%), heliotrope rash (66.3%), abnormal gait (55.8%), and malar/facial rash (54.7%). The prevalence of Gottron papules, heliotrope rash, facial/malar rash, nailfold capillary abnormalities, Raynaud phenomenon, dysphonia/dysphagia (a frequent cause of hospitalization), mouth ulcers, calcinosis, eye problems, joint involvement, acanthosis nigricans and lipodystrophy increased during follow-up. Muscle enzymes, namely CK, ALT, AST, were often normal or only slightly raised despite active muscle disease; conversely LD was often high. Anti-Nuclear Autoantibodies were positive in 49.7% of patients at diagnosis. The course of the disease was: 29.1% monocyclic, 5.3% polycyclic, 33.1% chronic. The course of 56 patients (32.5%) was not classifiable due to length of follow-up. Corticosteroids were used as treatment in almost all our patients and 30% required intravenous therapy due to the severity of the presentation; methotrexate was added in 64%, more often in recent years. Unresponsive patients were treated mostly with intravenous immunoglobulins (IVIG). CONCLUSIONS The information obtained from this relatively large number of patients adds to the growing knowledge base of this rare disease. TRIAL REGISTRATION SickKids Research Ethics Board approved the study.
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Affiliation(s)
- Paola Cancarini
- Operative Unit of Pediatrics, ASST del Garda, Desenzano del Garda (BS), Italy
| | - Tomo Nozawa
- Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan; Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Kristi Whitney
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Rehabilitation, The Hospital for Sick Children, Toronto, Canada
| | - Audrey Bell-Peter
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Jo-Anne Marcuz
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Rehabilitation, The Hospital for Sick Children, Toronto, Canada
| | - Andrea Taddio
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo" and University of Trieste, Trieste, Italy
| | - Jessica Guo
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada
| | - Saunya Dover
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada
| | - Brian M Feldman
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada; Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Health Policy, Management & Evaluation, The Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
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8
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Environmental factors associated with juvenile idiopathic inflammatory myopathy clinical and serologic phenotypes. Pediatr Rheumatol Online J 2022; 20:28. [PMID: 35414090 PMCID: PMC9004071 DOI: 10.1186/s12969-022-00684-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/28/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Environmental exposures have been associated with the juvenile idiopathic inflammatory myopathies (JIIM). We undertook a questionnaire-based study to evaluate patient-reported exposures as possible risk factors for JIIM. FINDINGS One-hundred-seven patients with JIIM were enrolled in a myositis natural history protocol and completed environmental questionnaires. Frequencies of exposures in clinical and myositis-specific autoantibody (MSA) groups were examined. Patients with juvenile dermatomyositis (JDM) and juvenile connective tissue myositis (JCTM) more frequently received an immunization within 1 year of diagnosis compared to juvenile polymyositis (57.5 and 71.4% vs 0.0%, p ≤ 0.017). JCTM patients were more often underweight at diagnosis relative to JDM patients (42.9% vs 7.0%, p = 0.002). MSA-negative patients more frequently had gastroenteritis within a year of diagnosis compared to patients with anti-MDA5 autoantibodies (28.6% vs 0.0%, p = 0.032). Heavy exercise was more frequent in MSA-negative and anti-MDA5 groups compared to the anti-TIF-1 autoantibody group (42.9 and 35.3% vs. 9.0%, p ≤ 0.047). Medications received within 1 year of diagnosis were more frequent in MSA-negative patients relative to those with anti-MDA5 autoantibodies (92.9% vs. 52.8% p = 0.045). Being breastfed > 6 months was more frequent in MSA-negative patients (88.9%) compared to anti-TIF-1 and anti-MDA5 autoantibody groups (41.2 and 28.6%, p ≤ 0.036). CONCLUSIONS Certain environmental exposures prior to diagnosis differed among clinical and serologic subgroups of JIIM, suggesting additional exposures to be explored as possible risk factors for JIIM phenotypes.
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Hossain MM, Wilkerson J, McGrath JA, Farhadi PN, Brokamp C, Khan MTF, Goldberg B, Brunner HI, Macaluso M, Miller FW, Rider LG. The Geospatial Distribution of Myositis and Its Phenotypes in the United States and Associations With Roadways: Findings From a National Myositis Patient Registry. Front Med (Lausanne) 2022; 9:842586. [PMID: 35372396 PMCID: PMC8966380 DOI: 10.3389/fmed.2022.842586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/04/2022] [Indexed: 11/23/2022] Open
Abstract
Background Little is known about the spatial distribution of idiopathic inflammatory myopathies (IIM) in the United States (U.S.), or their geospatial associations. Methods We studied a national myositis patient registry, with cases diagnosed in the contiguous U.S. from 1985–2011 and comprised of dermatomyositis (DM, n = 484), polymyositis (PM, n = 358), and inclusion body myositis (IBM, n = 318) patients. To assess the association of myositis prevalence with distance from roads, we employed log-Gaussian Cox process models, offset with population density. Results The U.S. IIM case distribution demonstrated a higher concentration in the Northest. DM, IBM, and cases with lung disease were more common in the East, whereas PM cases were more common in the Southeast. One area in the West and one area in the South had a significant excess in cases of DM relative to PM and of cases with lung disease relative to those without lung disease, respectively. IIM cases tended to cluster, with between-points interactions more intense in the Northeast and less in the South. There was a trend of a higher prevalence of IIM and its major phenotypes among people living within 50 m of a roadway relative to living beyond 200 m. Demographic characteristics, rural-urban commuting area, and female percentage were significantly associated with the prevalence of IIM and with major phenotypes. Conclusions Using a large U.S. database to evaluate the spatial distribution of IIM and its phenotypes, this study suggests clustering in some regions of the U.S. and a possible association of proximity to roadways.
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Affiliation(s)
- Md M Hossain
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Jesse Wilkerson
- Social and Scientific Systems, A DLH Holdings Corp Company, Durham, NC, United States
| | - John A McGrath
- Social and Scientific Systems, A DLH Holdings Corp Company, Durham, NC, United States
| | - Payam N Farhadi
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, United States.,Kelly Government Solutions, Rockville, MD, United States
| | - Cole Brokamp
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Md T F Khan
- Division of Biostatistics and Bioinformatics, University of Cincinnati, Cincinnati, OH, United States
| | - Bob Goldberg
- The Myositis Association, Alexandria, VA, United States
| | - Hermine I Brunner
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Maurizio Macaluso
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Frederick W Miller
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, United States
| | - Lisa G Rider
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, United States
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Yen HC, Lin CH, Lin MC, Hsu YC, Lin YH. Prenatal Exposure to Air Pollution and Immune Thrombocytopenia: A Nationwide Population-Based Cohort Study. Front Pediatr 2022; 10:837101. [PMID: 35372164 PMCID: PMC8975147 DOI: 10.3389/fped.2022.837101] [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: 12/16/2021] [Accepted: 02/11/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Immune thrombocytopenia (ITP) is one of the most common hematologic disorders in children. However, its etiology is still unclear. Epidemiological studies have shown that air pollution is a plausible risk factor in stimulation of oxidative stress, induction of inflammation, and onset of autoimmune diseases. The objective of this article is to examine the effects of prenatal exposure to air pollution on the occurrence of immune thrombocytopenia (ITP) in children. MATERIALS AND METHODS This is a nationwide, population-based, matched case-control study. Using data from Taiwan's Maternal and Child Health Database (MCHD), we identified 427 children with ITP less than 6 years of age and age-matched controls without ITP between 2004 and 2016. Levels of prenatal exposure to air pollutants were obtained from 71 Environmental Protection Administration monitoring stations across Taiwan according to the maternal residence during pregnancy. Patients who had outpatient visits or admission with diagnosis of ITP and subsequently received first-line treatment of intravenous immunoglobulin or oral glucocorticoids were defined as incidence cases. RESULTS Prenatal exposure to particulate matter <10 μm (PM10) in diameter and the pollutant standard index (PSI) increased the risk of childhood ITP. Conversely, carbon monoxide (CO) exposure during pregnancy was negatively associated with the development of ITP. CONCLUSION Certain prenatal air pollutant exposure may increase the incidence of ITP in children.
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Affiliation(s)
- Hsin-Chien Yen
- Children's Medical Center, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Chien-Heng Lin
- Department of Medical Research, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Ming-Chih Lin
- Children's Medical Center, Taichung Veterans General Hospital, Taichung City, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Taipei City, Taiwan.,Department of Food and Nutrition, Providence University, Taichung City, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung City, Taiwan.,Department of Post-baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung City, Taiwan
| | - Ya-Chi Hsu
- Children's Medical Center, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Yi-Hsuan Lin
- Children's Medical Center, Taichung Veterans General Hospital, Taichung City, Taiwan
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11
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Farhat SCL, Ejnisman C, Alves AGF, Goulart MFG, Lichtenfels AJDFC, Braga ALF, Pereira LAA, Maluf Elias A, Silva CA. Air pollution influence on serum inflammatory interleukins: A prospective study in childhood-onset systemic lupus erythematous patients. Lupus 2021; 30:2268-2275. [PMID: 34879788 DOI: 10.1177/09612033211061479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To assess the effect of individual exposure, in real-time, to traffic-related pollutants on serum interleukin levels of childhood-onset lupus erythematous systemic (c-SLE) patients. METHODS A longitudinal and observational design was conducted in 12 repeated measures of serum samples and clinical evaluations (totaling 108 measurements) of c-SLE patients over 30 consecutive months. Real-time, individual exposure to fine particles (PM2.5) and nitrogen dioxide (NO2) was measured with portable monitors. Generalized estimating equation was used to evaluate the association between exposure to PM2.5 and NO2 and the following serum cytokine levels on the 7 days preceding clinical assessment and serum collection: MCP1, IL-6, IL-8, IL-10, IL-17, IFN-alpha, and TNF-alpha. Disease activity and other risk factors were also controlled. RESULTS An interquartile range (IQR) increase in PM2.5 daily concentration was significantly associated with increased levels of TNF-alpha on the third, fourth, and seventh day after exposure; IL-10 on the third and fourth day after exposure; IL-17 on the third and seventh day after exposure; and INF-alpha on the third day after exposure (p < 0.05). An IQR increase in 7-day moving average of PM2.5 was associated with a 6.2 pg/mL (95% CI: 0.5; 11.8; p = 0.04) increase in serum IFN-alpha level. An unexpected significant association was observed between an IQR increase in NO27-day cumulative concentration and a decrease of 1.6 pg/mL (95% CI: -2.6; -0.7; p < 0.001) in serum IL-17. CONCLUSION Real-time exposure to PM2.5 prospectively associated with increased serum TNF-alpha, INF-alpha, IL-10, and IL-17 levels in c-SLE patients.
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Affiliation(s)
- Sylvia Costa Lima Farhat
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina FMUSP, 37884Universidade de Sao Paulo, São Paulo, Brazil.,Pediatric Department Hospital das Clinicas HCFMUSP, Faculdade de Medicina, 37884Universidade de Sao Paulo, São Paulo, Brazil
| | - Carolina Ejnisman
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,428062Universidade de Santo Amaro, Sao Paulo, Brazil
| | - Andressa Guariento Ferreira Alves
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maria Fernanda Giacomin Goulart
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Alfésio Luis Ferreira Braga
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina FMUSP, 37884Universidade de Sao Paulo, São Paulo, Brazil.,Environmental Exposure and Risk Assessment Group, Collective Health Post-graduation Program, 67888Universidade Catolica de Santos, Santos, Brazil
| | - Luiz Alberto Amador Pereira
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, 37884Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina FMUSP, 37884Universidade de Sao Paulo, São Paulo, Brazil
| | - Adriana Maluf Elias
- Pediatric Department Hospital das Clinicas HCFMUSP, Faculdade de Medicina, 37884Universidade de Sao Paulo, São Paulo, Brazil.,Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, 28133Universidade de Sao Paulo, São Paulo, Brazil
| | - Clovis A Silva
- Pediatric Department Hospital das Clinicas HCFMUSP, Faculdade de Medicina, 37884Universidade de Sao Paulo, São Paulo, Brazil.,Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, 28133Universidade de Sao Paulo, São Paulo, Brazil.,Division of Rheumatology, Faculdade de Medicina FMUSP, 37884Universidade de Sao Paulo, São Paulo, Brazil
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12
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Abstract
Studying environmental risk factors for pediatric rheumatic diseases (PRD) is important because the identification of these factors may lead to strategies to prevent disease, and to new insights into pathogenesis and therapeutic targets. Compared with other chronic diseases, there are few environmental epidemiology studies in PRD. Although strong risk factors common to all PRDs have not been identified, some exposures including infection, smoke exposure, and ultraviolet radiation have been associated with several of them. High-technology studies, especially of microbiomics and metabolomics, are increasing and will likely lead to new understandings of the complex interplay between environment, genetics, and disease.
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13
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Abstract
Cardiovascular disease risk is evident during childhood for patients with juvenile systemic lupus erythematosus, juvenile dermatomyositis, and juvenile idiopathic arthritis. The American Heart Association defines cardiovascular health as a positive health construct reflecting the sum of protective factors against cardiovascular disease. Disease-related factors such as chronic inflammation and endothelial dysfunction increase cardiovascular disease risk directly and through bidirectional relationships with poor cardiovascular health factors. Pharmacologic and nonpharmacologic interventions to improve cardiovascular health and long-term cardiovascular outcomes in children with rheumatic disease are needed.
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14
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Kim H, Huber AM, Kim S. Updates on Juvenile Dermatomyositis from the Last Decade: Classification to Outcomes. Rheum Dis Clin North Am 2021; 47:669-690. [PMID: 34635298 DOI: 10.1016/j.rdc.2021.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Juvenile dermatomyositis (JDM) is a heterogeneous disease with new classification criteria and updates in myositis-specific autoantibody and myositis-associated antibody groups. There are many validated assessment tools for assessing disease activity in JDM. Future studies will optimize these tools and improve feasibility in clinical and research contexts. Genetic and environmental risk factors, mechanisms of muscle pathology, role of interferon, vascular markers, and changes in immune cells provide insights to JDM pathogenesis. Outcomes have improved, but chronic disease, damage, and mortality highlight the need for better outcome predictors and treatments. Increased collaboration of stakeholders may help overcome research barriers and improve JDM treatment.
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Affiliation(s)
- Hanna Kim
- Juvenile Myositis Pathogenesis and Therapeutics Unit, National Institute of Arthritis Musculoskeletal and Skin Diseases, National Institutes of Health, 10 Center Drive, Building 10, 12N-240, Bethesda, MD 20892, USA.
| | - Adam M Huber
- IWK Health Centre and Dalhousie University, Division of Pediatric Rheumatology, 5850 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
| | - Susan Kim
- University of California, San Francisco, 550 16th Street, San Francisco, CA 94158, USA
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15
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Echevarría-Lucas L, Senciales-González JM, Medialdea-Hurtado ME, Rodrigo-Comino J. Impact of Climate Change on Eye Diseases and Associated Economical Costs. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:7197. [PMID: 34281132 PMCID: PMC8297364 DOI: 10.3390/ijerph18137197] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 01/22/2023]
Abstract
Climate change generates negative impacts on human health. However, little is known about specific impacts on eye diseases, especially in arid and semi-arid areas where increases in air temperatures are expected. Therefore, the main goals of this research are: (i) to highlight the association between common eye diseases and environmental factors; and (ii) to analyze, through the available literature, the health expenditure involved in combating these diseases and the savings from mitigating the environmental factors that aggravate them. Mixed methods were used to assess the cross-variables (environmental factors, eye diseases, health costs). Considering Southern Spain as an example, our results showed that areas with similar climatic conditions could increase eye diseases due to a sustained increase in temperatures and torrential rains, among other factors. We highlight that an increase in eye diseases in Southern Spain is conditioned by the effects of climate change by up to 36.5%; the economic burden of the main eye diseases, extrapolated to the rest of the country, would represent an annual burden of 0.7% of Spain's Gross Domestic Product. In conclusion, the increase in eye diseases has a strong economic and social impact that could be reduced with proper management of the effects of climate change. We propose a new concept: disease sink, defined as any climate change mitigation action which reduces the incidence or morbidity of disease.
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Affiliation(s)
- Lucía Echevarría-Lucas
- Ophthalmology Service of Axarquía Hospital, 29700 Vélez-Málaga, Spain; (L.E.-L.); (M.E.M.-H.)
| | | | | | - Jesús Rodrigo-Comino
- Department of Regional Geographical Analysis and Physical Geography, University of Granada, 18010 Granada, Spain
- Department of Physical Geography, University of Trier, 54296 Trier, Germany
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16
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Zheng Q, Zhu K, Gao CN, Xu YP, Lu MP. Prevalence of Epstein-Barr virus infection and characteristics of lymphocyte subsets in newly onset juvenile dermatomyositis. World J Pediatr 2021; 17:205-209. [PMID: 31549298 DOI: 10.1007/s12519-019-00314-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 09/02/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND The underlying etiology of juvenile dermatomyositis (JDM) is unknown. T cell deficiency as well as Epstein-Barr virus (EBV) infection had been suspected to be involved in the pathogenesis, but it has been poorly evaluated in JDM patients. METHODS This study described the traits of T and B lymphocyte subsets in newly onset JDM patients and the incidence of EBV infection in JDM patients compared with match controls. Newly developed JDM patients from 2014 to 2018 were included in the study. Lymphocytes with different markers (CD3+, CD3+CD4+, CD3+CD8+, CD3-CD19+ and CD3-CD16+CD56+) were tested with flow cytometry in the first admission or after 6 months of treatment. Statistical analysis was conducted to compare the EBV infection in the group of JDM patients and controls. RESULTS We observed that JDM patients had higher positive rate of Epstein-Barr nuclear antigen-immunoglobulin G (IgG) (P < 0.0001) as well as EBV capsid antigen-IgG (P < 0.05) than normal controls. CD3-CD16+CD56+ lymphocyte was found to be extremely low in early stage of JDM patients, but increased after 6 months of treatment (P = 0.0091). CONCLUSIONS The level of CD3-CD16+CD56+ cells may associate with the clinical course of JDM. EBV may act as an environmental factor predisposing patients to the development of JDM.
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Affiliation(s)
- Qi Zheng
- Department of Rheumatology, Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, 57# Zhu Gan Road, Hangzhou, 310000, China
| | - Kun Zhu
- Department of Pathology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Cai-Na Gao
- Department of Rheumatology, Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, 57# Zhu Gan Road, Hangzhou, 310000, China
| | - Yi-Ping Xu
- Department of Rheumatology, Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, 57# Zhu Gan Road, Hangzhou, 310000, China
| | - Mei-Ping Lu
- Department of Rheumatology, Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, 57# Zhu Gan Road, Hangzhou, 310000, China.
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17
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Bax CE, Maddukuri S, Ravishankar A, Pappas-Taffer L, Werth VP. Environmental triggers of dermatomyositis: a narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:434. [PMID: 33842655 PMCID: PMC8033368 DOI: 10.21037/atm-20-3719] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Dermatomyositis (DM) is an autoimmune disease that affects the skin, lungs, and muscle. Although the pathogenesis of DM is not completely understood, several environmental triggers have been linked to DM onset or flare. This article specifically examines the effects of herbal supplements, drugs, infections, ultraviolet (UV) radiation, and environmental pollutants on the onset or exacerbation of DM. Herbal supplements such as Spirulina platensis, Aphanizomenon flos-aquae, Chlorella, Echinacea, and Alfalfa have been implicated and are frequently used in health foods. Medications such as hydroxyurea, TNF-α inhibitors, immune checkpoint inhibitors (ICI), and penicillamine, as well as certain viral infections, such as parvovirus B19, coxsackie virus, polyomavirus, Epstein-Barr virus (EBV), hepatitis, influenza, and human immunodeficiency viruses (HIV) have been associated with DM onset. Bacterial infections and vaccinations have also been linked to the development of DM. Additional environmental factors, including UV radiation and air pollutants, such as silica, biological/mineral dust, and particulate air matter from vehicle and industrial emissions, may also play a role in DM pathogenesis. Overall, there is general agreement that an autoimmune attack of the skin, muscle, and lungs in DM can be triggered by various environmental factors and warrants further investigation.
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Affiliation(s)
- Christina E Bax
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Spandana Maddukuri
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Adarsh Ravishankar
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Lisa Pappas-Taffer
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Victoria P Werth
- Corporal Michael J. Crescenz VAMC, Philadelphia, PA, USA.,Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
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18
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Leung AKC, Lam JM, Alobaida S, Leong KF, Wong AHC. Juvenile Dermatomyositis: Advances in Pathogenesis, Assessment, and Management. Curr Pediatr Rev 2021; 17:273-287. [PMID: 33902423 DOI: 10.2174/1573396317666210426105045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Juvenile dermatomyositis is the most common inflammatory myopathy in the pediatric age group and a major cause of mortality and morbidity in individuals with childhood rheumatic diseases. Mounting evidence suggests that early diagnosis and timely aggressive treatment are associated with better outcomes. OBJECTIVE The purpose of this article is to provide readers with an update on the evaluation, diagnosis, and the treatment of juvenile dermatomyositis. METHODS A PubMed search was performed in Clinical Queries using the key term "juvenile dermatomyositis" in the search engine. The search strategy included meta-analyses, randomized controlled trials, clinical trials, observational studies, and reviews. The search was restricted to English literature. The information retrieved from the above search was used in the compilation of the present article. RESULTS Juvenile dermatomyositis is a chronic autoimmune inflammatory condition characterized by systemic capillary vasculopathy that primarily affects the skin and muscles with possible involvement of other organs. In 2017, the European League Against Rheumatism (EULAR) and the American College of Rheumatology (ACR) developed diagnostic criteria for juvenile idiopathic inflammatory myopathies and juvenile dermatomyositis. In the absence of muscle biopsies which are infrequently performed in children, scores (in brackets) are assigned to four variables related to muscle weakness, three variables related to skin manifestations, one variable related to other clinical manifestations, and two variables related to laboratory measurements to discriminate idiopathic inflammatory myopathies from non-idiopathic inflammatory myopathies as follows: objective symmetric weakness, usually progressive, of the proximal upper extremities (0.7); objective symmetric weakness, usually progressive, of the proximal lower extremities (0.8); neck flexors relatively weaker than neck extensors (1.9); leg proximal muscles relatively weaker than distal muscles (0.9); heliotrope rash (3.1); Gottron papules (2.1); Gottron sign (3.3); dysphagia or esophageal dysmotility (0.7); the presence of anti-Jo-1 autoantibody (3.9); and elevated serum levels of muscle enzymes (1.3). In the absence of muscle biopsy, a definite diagnosis of idiopathic inflammatory myopathy can be made if the total score is ≥7.5. Patients whose age at onset of symptoms is less than 18 years and who meet the above criteria for idiopathic inflammatory myopathy and have a heliotrope rash, Gottron papules or Gottron sign are deemed to have juvenile dermatomyositis. The mainstay of therapy at the time of diagnosis is a high-dose corticosteroid (oral or intravenous) in combination with methotrexate. CONCLUSION For mild to moderate active muscle disease, early aggressive treatment with high-dose oral prednisone alone or in combination with methotrexate is the cornerstone of management. Pulse intravenous methylprednisolone is often preferred to oral prednisone in more severely affected patients, patients who respond poorly to oral prednisone, and those with gastrointestinal vasculopathy. Other steroid-sparing immunosuppressive agents such as cyclosporine and cyclophosphamide are reserved for patients with contraindications or intolerance to methotrexate and for refractory cases, as the use of these agents is associated with more adverse events. Various biological agents have been used in the treatment of juvenile dermatomyositis. Data on their efficacy are limited, and their use in the treatment of juvenile dermatomyositis is considered investigational.
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Affiliation(s)
- Alexander K C Leung
- Department of Pediatrics, The University of Calgary, Alberta Children's Hospital, Calgary, Alberta,Canada
| | - Joseph M Lam
- Department of Pediatrics and Department of Dermatology and Skin Sciences, The University of British Columbia, Vancouver, British Columbia,Canada
| | - Saud Alobaida
- Department of Dermatology, King Faisal Specialist Hospital & Research Centre, Riyadh,Saudi Arabia
| | - Kin F Leong
- Pediatric Institute, Kuala Lumpur General Hospital, Kuala Lumpur,Malaysia
| | - Alex H C Wong
- Department of Family Medicine, The University of Calgary, Calgary, Alberta,Canada
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19
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Ghosh R, Roy D, Dubey S, Abdelrahman K, Dey AK, Chatterjee S, Lahiri D, Ray BK. Juvenile dermatomyositis presenting as complete heart block in a 10-year-old girl. Paediatr Int Child Health 2020; 40:251-254. [PMID: 32427522 DOI: 10.1080/20469047.2020.1765123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Juvenile dermatomyositis (JDM) is an auto-immune inflammatory condition associated with cardiac disorders including conduction abnormalities and myocardial dysfunction. The time of presentation of cardiac abnormalities can range from disease onset to after long-term follow-up, emphasising the importance of screening for cardiac involvement in JDM. A previously healthy 10-year-old girl presented with syncope, fatigue and weakness associated with a heliotrope rash. JDM was diagnosed based on the clinical, laboratory and imaging findings. An ECG demonstrated complete heart block (CHB). All symptoms resolved following treatment with parenteral corticosteroids. In JDM, it is important to investigate for cardiac manifestations and in CHB to consider administering corticosteroids.
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Affiliation(s)
- Ritwik Ghosh
- Department of General Medicine, Burdwan Medical College & Hospital , Burdwan, India
| | - Devlina Roy
- Department of General Medicine, Burdwan Medical College & Hospital , Burdwan, India
| | - Souvik Dubey
- Department of Neuromedicine, Bangur Institute of Neurosciences, Institute of Postgraduate Medical Education and Research & SSKM Hospital , Kolkata, India
| | | | - Amit Kumar Dey
- National Heart, Lung and Blood Institute, National Institutes of Health , Bethesda, MD, USA
| | - Subhankar Chatterjee
- Department of General Medicine, Rajendra Institute of Medical Sciences , Ranchi, India
| | - Durjoy Lahiri
- Department of Neuromedicine, R. G. Kar Medical College & Hospital , Kolkata, India
| | - Biman Kanti Ray
- Department of Neuromedicine, Bangur Institute of Neurosciences, Institute of Postgraduate Medical Education and Research & SSKM Hospital , Kolkata, India
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20
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Wang CM, Jung CR, Chen WT, Hwang BF. Exposure to fine particulate matter (PM 2.5) and pediatric rheumatic diseases. ENVIRONMENT INTERNATIONAL 2020; 138:105602. [PMID: 32120057 DOI: 10.1016/j.envint.2020.105602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 02/16/2020] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
Few studies have assessed the association between fine particulate matter (PM2.5) exposure during pregnancy and infancy and pediatric rheumatic diseases (PRDs). The goal of this study was to investigate the association of PM2.5 with PRDs, and to explore sensitive windows of exposure. Therefore, we conducted a cohort-based case-control study to investigate the association between weekly exposure to PM2.5 and PRDs in Taiwan. Our birth cohort consisted of infants born in 2004-2014 (n = 1,991,592) who were followed from conception to the end of 2015. There were 2363 cases of incident PRDs in children, and 23,630 children served as controls using density matching (1:10) based on date of birth, gender, and gestational week. We used a linear mixed effect (LME) model to incorporate the aerosol optical depth (AOD), meteorological variables, and land-use data to predict daily PM2.5 concentrations. We also performed conditional logistic regression with distributed lag non-linear models (DLNMs) to assess the effects of weekly average PM2.5 on PRDs, as well as dose-response relationships. In DLNMs, exposure to PM2.5 during pregnancy (11-40 weeks) or infancy (1-14 weeks after birth) was associated with incident PRDs adjusting for potential confounding factors, and for carbon monoxide and sulfur dioxide. In the dose-response association, the odds ratios of PRDs were significantly increased for PM2.5 exposures between 26 and 54 μg/m3. In addition, exposure to PM2.5 above 81 μg/m3 dramatically increased the risk of PRDs. In conclusions, our study provides new data to suggest that PM2.5 exposure from 11-40 gestational weeks to 1-14 weeks after birth can increase the risk for PRDs in a non-linear dose-response fashion.
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Affiliation(s)
- Chi-Min Wang
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan.
| | - Chau-Ren Jung
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan; Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan.
| | - Wei-Ting Chen
- Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan.
| | - Bing-Fang Hwang
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan; Department of Occupational Therapy, College of Medical and Health Science, Asia University, Taichung, Taiwan.
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21
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Sesé L, Jeny F, Uzunhan Y, Khamis W, Freynet O, Valeyre D, Bernaudin JF, Annesi-Maesano I, Nunes H. [The effect of air pollution in diffuse interstitial lung disease]. Rev Mal Respir 2020; 37:389-398. [PMID: 32278507 DOI: 10.1016/j.rmr.2020.02.015] [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: 09/09/2019] [Accepted: 02/09/2020] [Indexed: 11/30/2022]
Abstract
Few studies have examined the effects of air pollution in diffuse interstitial lung disease and they have focused on small numbers of patients. Most data are available in idiopathic pulmonary fibrosis and studies suggest that the level of exposure to pollutants may influence the development of acute exacerbations (ozone and NO2), their incidence (NO2), decline in respiratory function (PM10) and death (PM10 and PM2.5). Several studies show an increase in the incidence of rheumatoid arthritis in people living near busy roads. In systemic scleroderma, hypersensitivity pneumonitis and sarcoidosis although negative effects of pollution have been reported the data are insufficient to be conclusive. Nevertheless, the observed effects of air pollution are consistent with those described for other chronic respiratory diseases. Exposure to pollution induces oxidative stress, chronic inflammation and shortening of telomeres, which are all mechanisms described in fibrogenesis. New epidemiological studies are needed with individual measurements of exposure to outdoor and indoor pollution, as well as fundamental studies to clarify the effect of pollution on fibrogenesis.
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Affiliation(s)
- L Sesé
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; EPAR, INSERM UMR-S 1136, Sorbonne Université, Paris, France; Service d'explorations fonctionnelles, AP-HP, hôpital Avicenne, Bobigny, France.
| | - F Jeny
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; INSERM 1272 « Réponses cellulaires et fonctionnelles à l'hypoxie », Université Paris 13, Bobigny, France
| | - Y Uzunhan
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; INSERM 1272 « Réponses cellulaires et fonctionnelles à l'hypoxie », Université Paris 13, Bobigny, France
| | - W Khamis
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France
| | - O Freynet
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France
| | - D Valeyre
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; INSERM 1272 « Réponses cellulaires et fonctionnelles à l'hypoxie », Université Paris 13, Bobigny, France
| | - J-F Bernaudin
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; INSERM 1272 « Réponses cellulaires et fonctionnelles à l'hypoxie », Université Paris 13, Bobigny, France
| | | | - H Nunes
- Service de pneumologie, hôpital Avicenne, AP-HP, Bobigny, France; INSERM 1272 « Réponses cellulaires et fonctionnelles à l'hypoxie », Université Paris 13, Bobigny, France
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22
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Miller FW, Lamb JA, Schmidt J, Nagaraju K. Risk factors and disease mechanisms in myositis. Nat Rev Rheumatol 2019; 14:255-268. [PMID: 29674613 DOI: 10.1038/nrrheum.2018.48] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Autoimmune diseases develop as a result of chronic inflammation owing to interactions between genes and the environment. However, the mechanisms by which autoimmune diseases evolve remain poorly understood. Newly discovered risk factors and pathogenic processes in the various idiopathic inflammatory myopathy (IIM) phenotypes (known collectively as myositis) have illuminated innovative approaches for understanding these diseases. The HLA 8.1 ancestral haplotype is a key risk factor for major IIM phenotypes in some populations, and several genetic variants associated with other autoimmune diseases have been identified as IIM risk factors. Environmental risk factors are less well studied than genetic factors but might include viruses, bacteria, ultraviolet radiation, smoking, occupational and perinatal exposures and a growing list of drugs (including biologic agents) and dietary supplements. Disease mechanisms vary by phenotype, with evidence of shared innate and adaptive immune and metabolic pathways in some phenotypes but unique pathways in others. The heterogeneity and rarity of the IIMs make advancements in diagnosis and treatment cumbersome. Novel approaches, better-defined phenotypes, and international, multidisciplinary consensus have contributed to progress, and it is hoped that these methods will eventually enable therapeutic intervention before the onset or major progression of disease. In the future, preemptive strategies for IIM management might be possible.
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Affiliation(s)
- Frederick W Miller
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Janine A Lamb
- Centre for Epidemiology, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, UK
| | - Jens Schmidt
- Department of Neurology, University Medical Center Göttingen, Göttingen, Germany
| | - Kanneboyina Nagaraju
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, Binghamton University, Binghamton, NY, USA
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23
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Pearson DR, Werth VP. Geospatial Correlation of Amyopathic Dermatomyositis With Fixed Sources of Airborne Pollution: A Retrospective Cohort Study. Front Med (Lausanne) 2019; 6:85. [PMID: 31069228 PMCID: PMC6491706 DOI: 10.3389/fmed.2019.00085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 04/04/2019] [Indexed: 11/28/2022] Open
Abstract
Objective: Dermatomyositis (DM) may result from exogenous triggers, including airborne pollutants, in genetically susceptible individuals. The United States Environmental Protection Agency's 2011 National Air Toxics Assessment (NATA) models health risks associated with airborne emissions, available by ZIP code tabulation area (ZCTA). Important contributors include point (fixed), on-road, and secondary sources. The objective of this study was to investigate the geospatial distributions of DM and subtypes, classic DM (CDM) and clinically amyopathic DM (CADM), and their associations with airborne pollutants. Methods: This retrospective cohort study identified 642 adult DM patients from 336 unique ZCTAs. GeoDa v.1.10 was used to calculate global and local Moran's indices and generate local indicator of spatial autocorrelation (LISA) maps. All Moran's indices and LISA maps were permuted 999 times. Results: Univariate global Moran's indices for DM, CDM, and CADM prevalence were not significant, but LISA maps demonstrated differential local spatial clustering and outliers. CADM prevalence correlated with point sources (bivariate global Moran's index 0.071, pseudo-p = 0.018), in contrast to CDM (−0.0053, pseudo-p = 0.46). Bivariate global Moran's indices for DM, CDM, and CADM prevalence did not correlate with other airborne toxics, but bivariate LISA maps revealed local spatial clustering and outliers. Conclusion: Prevalence of CADM, but not CDM, is geospatially correlated with fixed sources of airborne emissions. This effect is small but significant and may support the hypothesis that triggering exposures influence disease phenotype. Important limitations are NATA data and ZCTA population estimates were collected from 2011 and ZCTA of residence may not have been where patients had greatest airborne pollutant exposure.
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Affiliation(s)
- David R Pearson
- Department of Dermatology, University of Minnesota Medical School, Minneapolis, MN, United States
| | - Victoria P Werth
- Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, United States.,Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Pinal-Fernandez I, Mammen AL. Dermatomyositis etiopathogenesis: a rebel soldier in the muscle. Curr Opin Rheumatol 2018; 30:623-629. [PMID: 30148802 DOI: 10.1097/bor.0000000000000540] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW The purpose of this article is to review the etiopathogenesis of dermatomyositis, including the predisposing factors, triggers, inflammatory cells, pathways and target antigens associated with dermatomyositis. RECENT FINDINGS During the last few years, we have made considerable progress in unveiling the etiopathogenesis of dermatomyositis. In the first place, we have defined genes within the major histocompatibility complex locus as the greatest genetic risk factor for the disease. Second, we have demonstrated that certain environmental factors, as well as tumors, may trigger certain dermatomyositis subtypes. Moreover, we have established the importance of the interferon pathway in dermatomyositis pathogenesis compared with other myositis subtypes. But probably, the most remarkable advance has been the discovery of multiple autoantibodies that define groups of patients with characteristic clinical features, prognosis and response to treatment. SUMMARY Dermatomyositis cause and pathogenesis have proven to be a complex and fascinating task for the scientific community and the last decade has been full of new findings on how the disease starts and how it causes damage to different organ systems. However, we have still more questions than answers in this topic, answers that will be critical to understanding autoimmunity and finding effective therapies to dermatomyositis.
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Affiliation(s)
- Iago Pinal-Fernandez
- 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.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Andrew L Mammen
- 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.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Pachman LM, Khojah AM. Advances in Juvenile Dermatomyositis: Myositis Specific Antibodies Aid in Understanding Disease Heterogeneity. J Pediatr 2018; 195:16-27. [PMID: 29576174 PMCID: PMC5881602 DOI: 10.1016/j.jpeds.2017.12.053] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/27/2017] [Accepted: 12/18/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Lauren M Pachman
- Department of Pediatrics , Northwestern University Feinberg School of Medicine, Chicago, IL; Stanley Manne Children's Research Institute, Cure JM Center of Excellence in Juvenile Myositis (JM) Research, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
| | - Amer M Khojah
- Department of Pediatrics, Division of Pediatric Rheumatology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
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26
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Schiffenbauer A, Faghihi-Kashani S, O'Hanlon TP, Flegel WA, Adams SD, Targoff IN, Oddis CV, Ytterberg SR, Aggarwal R, Christopher-Stine L, Shamim EA, Dellaripa PF, Danoff SK, Mammen AL, Miller FW. The effect of cigarette smoking on the clinical and serological phenotypes of polymyositis and dermatomyositis. Semin Arthritis Rheum 2018; 48:504-512. [PMID: 29703532 DOI: 10.1016/j.semarthrit.2018.02.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/29/2017] [Accepted: 02/12/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Cigarette smoking is associated with immune-mediated disorders. We explored the contribution of smoking to polymyositis (PM) and dermatomyositis (DM) phenotypes and attempted to determine whether cigarette smoking effects differ by race and genotype. METHODS Associations of tobacco smoking with disease features, autoantibodies, HLA types, and race were evaluated using multiple logistic regressions in 465 patients. RESULTS Caucasian ever-smokers (n = 140) were more likely to have PM (adjusted OR = 2.24, 95% CI: 1.41\x963.57), anti-synthetase (adjusted OR = 1.93, 95% CI: 1.12\x963.34) and anti-Jo-1 autoantibodies (adjusted OR = 1.94, 95% CI: 1.08\x963.46) and less likely to have anti-p155/140 autoantibodies (adjusted OR = 0.36, 95% CI: 0.14\x960.92). In Caucasians, ever-smokers had a greater interstitial lung disease (ILD) frequency than never-smokers, while in African-Americans this relationship was inverted, but neither trend reached statistical significance. Pack-years of cigarette smoking showed significant positive associations with PM (adjusted OR = 1.02, 95% CI: 1.002\x961.04) and ILD (adjusted OR = 1.02, 95% CI: 1.001\x961.03) and was inversely associated with anti-p155/140 autoantibodies (adjusted OR = 0.93, 95% CI: 0.87\x960.99) in Caucasians. Caucasian heavy smokers (=20 pack-years) were more likely to have PM (adjusted OR = 2.52, 95% CI: 1.25\x965.09), ILD (adjusted OR = 2.48, 95% CI: 1.23\x965.00) and anti-Jo-1 autoantibodies (adjusted OR = 2.65, 95% CI: 1.16\x966.08) than never-smokers. In Caucasians, compared to never-smokers without HLA-DRB1*03:01 allele, ever-smokers with HLA-DRB1*03:01 allele had the highest odds of PM, ILD, ASA, and anti-Jo-1 autoantibodies. Risks for those with only one of these two factors were intermediate. An inverse pattern was observed regarding anti-p155/140 autoantibodies. CONCLUSION Tobacco smoking was associated with clinical and autoantibody phenotypes in Caucasians. Our findings also suggest possible interactions among HLA-DRB1*03:01 and smoking on the risk of PM and ILD, as well as, anti-synthetase, anti-Jo-1, and anti-p155/140 autoantibodies in Caucasians.
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Affiliation(s)
- Adam Schiffenbauer
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD.
| | - Sara Faghihi-Kashani
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
| | - Terrence P O'Hanlon
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
| | - Willy A Flegel
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD
| | - Sharon D Adams
- Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD
| | - Ira N Targoff
- Veterans Affairs Medical Center, University of Oklahoma Health Sciences Center, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Chester V Oddis
- Myositis Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | | | - Rohit Aggarwal
- Myositis Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Lisa Christopher-Stine
- Johns Hopkins Myositis Center, Johns Hopkins University School of Medicine, Baltimore, MD; Departments of Neurology and Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ejaz A Shamim
- Department of Neurology, Mid-Atlantic Permanente Research Institute, Kaiser Permanente, Rockville, MD
| | - Paul F Dellaripa
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Boston, MA
| | - Sonye K Danoff
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, MD
| | - Andrew L Mammen
- Departments of Neurology and Medicine, Johns Hopkins University School of Medicine, Baltimore, MD; National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
| | - Frederick W Miller
- Environmental Autoimmunity Group, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
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França CMP, Sallum AME, Braga ALF, Strufaldi FL, Silva CAA, Farhat SCL. Risk Factors Associated with Juvenile Idiopathic Arthritis: Exposure to Cigarette Smoke and Air Pollution from Pregnancy to Disease Diagnosis. J Rheumatol 2017; 45:248-256. [DOI: 10.3899/jrheum.161500] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2017] [Indexed: 11/22/2022]
Abstract
Objective.To evaluate exposure to environmental factors inhaled during pregnancy and after birth until juvenile idiopathic arthritis (JIA) diagnosis among residents of a large city.Methods.This is an exploratory case-control study that consists of 66 patients with JIA and 124 healthy controls matched by age and sex, living in the São Paulo, Brazil, metropolitan area until JIA diagnosis, and whose mothers had resided in this region during pregnancy. A structured and reliable questionnaire (κ index for test-retest was 0.80) assessed demographic data, gestational and perinatal-related factors, and exposure to inhalable environmental elements during pregnancy and after birth (occupational exposure to inhalable particles and/or volatile vapor, exposure to cigarette smoke, and the presence of industrial activities or gas stations near the home, work, daycare, or school). Tropospheric pollutants included particulate matter (PM10), sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO).Results.During pregnancy, intrauterine cigarette smoke exposure (OR 3.43, 95% CI 1.45–8.12, p = 0.005) and maternal occupational exposure (OR 13.69, 95% CI 4.4–42.3, p < 0.001) were significant independent risk factors for JIA diagnosis. In contrast, maternal employment (OR 0.06, 95% CI 0.02–0.2, p < 0.001) and ideal maternal weight gain (OR 0.36, 95% CI 0.2–0.8, p = 0.017) presented negative associations. Secondhand smoke exposure from birth to JIA diagnosis (OR 3.6, 95% CI 1.8–7.3, p < 0.001) and exposure to O3during the second year of life (OR 2.76, 95% CI 1.20–6.37, p = 0.017) were independent and significant risk factors for the pathogenesis of JIA.Conclusion.In our study, cigarette smoke exposure (intrauterine and after birth), exposure to O3in the second year of life, and maternal occupational exposure were identified as potential risk factors for JIA, warranting further study.
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28
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Alves AGF, de Azevedo Giacomin MF, Braga ALF, Sallum AME, Pereira LAA, Farhat LC, Strufaldi FL, de Faria Coimbra Lichtenfels AJ, de Santana Carvalho T, Nakagawa NK, Silva CA, Farhat SCL. Influence of air pollution on airway inflammation and disease activity in childhood-systemic lupus erythematosus. Clin Rheumatol 2017; 37:683-690. [PMID: 29098476 DOI: 10.1007/s10067-017-3893-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/14/2017] [Accepted: 10/24/2017] [Indexed: 02/06/2023]
Abstract
Exposure to fine particles may trigger pulmonary inflammation/systemic inflammation. The objective of this study was to investigate the association between daily individual exposure to air pollutants and airway inflammation and disease activity in childhood-onset systemic lupus erythematosus (cSLE) patients. A longitudinal panel study was carried out in 108 consecutive appointments with cSLE patients without respiratory diseases. Over four consecutive weeks, daily individual measures of nitrogen dioxide (NO2), fine particulate matter (PM2.5), ambient temperature, and humidity were obtained. This cycle was repeated every 2.5 months along 1 year, and cytokines of exhaled breath condensate-EBC [interleukins (IL) 6, 8, 17 and tumoral necrose factor-α (TNF-α)], fractional exhaled NO (FeNO), and disease activity parameters were collected weekly. Specific generalized estimation equation models were used to assess the impact of these pollutants on the risk of Systemic Lupus Erythematous Disease Activity Index 2000 (SLEDAI-2K) ≥ 8, EBC cytokines, and FeNO, considering the fixed effects for repetitive measurements. The models were adjusted for inflammatory indicators, body mass index, infections, medication, and weather variables. An IQR increase in PM2.5 4-day moving average (18.12 μg/m3) was associated with an increase of 0.05 pg/ml (95% CI 0.01; 0.09, p = 0.03) and 0.04 pg/ml (95% CI 0.02; 0.06, p = 0.01) in IL-17 and TNF-α EBC levels, respectively. Additionally, a short-term effect on FeNO was observed: the PM2.5 3-day moving average was associated with a 0.75 ppb increase (95% CI 0.38; 1.29, p = 0.03) in FeNO. Also, an increase of 1.47 (95% CI 1.10; 1.84) in the risk of SLEDAI-2K ≥ 8 was associated with PM2.5 7-day moving average. Exposure to inhalable fine particles increases airway inflammation/pulmonary and then systemic inflammation in cSLE patients.
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Affiliation(s)
- Andressa Guariento Ferreira Alves
- Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Pediatric Department, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Maria Fernanda de Azevedo Giacomin
- Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Pediatric Department, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Alfésio Luis Ferreira Braga
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
- Environmental Exposure and Risk Assessment Group, Collective Health Post-graduation Program, Universidade Catolica de Santos, Santos, Brazil
| | - Adriana Maluf Elias Sallum
- Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Pediatric Department, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Luiz Alberto Amador Pereira
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
- Environmental Exposure and Risk Assessment Group, Collective Health Post-graduation Program, Universidade Catolica de Santos, Santos, Brazil
| | - Luis Carlos Farhat
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Fernando Louzada Strufaldi
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ana Julia de Faria Coimbra Lichtenfels
- Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
- Laboratory of Experimental Therapeutics, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Tômas de Santana Carvalho
- Department of Physiotherapy, Communication Science and Disorders, Occupational Therapy, LIM 34, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Naomi Kondo Nakagawa
- Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
- Department of Physiotherapy, Communication Science and Disorders, Occupational Therapy, LIM 34, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Clovis Artur Silva
- Pediatric Rheumatology Unit, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Pediatric Department, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
- Division of Rheumatology, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Sylvia Costa Lima Farhat
- Pediatric Department, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil.
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
- Laboratory of Experimental Air Pollution, LIM05, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil.
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Mamyrova G, Rider LG, Ehrlich A, Jones O, Pachman LM, Nickeson R, Criscone-Schreiber LG, Jung LK, Miller FW, Katz JD. Environmental factors associated with disease flare in juvenile and adult dermatomyositis. Rheumatology (Oxford) 2017; 56:1342-1347. [PMID: 28444299 DOI: 10.1093/rheumatology/kex162] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Indexed: 11/13/2022] Open
Abstract
Objective The aim was to assess environmental factors associated with disease flare in juvenile and adult dermatomyositis (DM). Methods An online survey of DM patients from the USA and Canada examined smoking, sun exposure, infections, medications, vaccines, stressful life events and physical activity during the 6 months before flares, or in the past 6 months in patients without flares. Differences were evaluated by χ 2 and Fisher's exact tests, and significant univariable results were examined in multivariable logistic regression. Residential locations before flare were correlated with the National Weather Service UV index. Results Of 210 participants (164 juvenile and 46 adult DM), 134 (63.8%) experienced a disease flare within 2 years of the survey. Subjects more often reported disease flare after sun exposure [odds ratio (OR) = 2.0, P = 0.03], although use of photoprotective measures did not differ between those with and without flare. Urinary tract infections (OR = 16.4, P = 0.005) and gastroenteritis (OR = 3.2, P = 0.04) were more frequent in the preceding 6 months in those who flared. Subjects who flared recently used NSAIDS (OR = 3.0, P = 0.0003), blood pressure medicines (OR = 3.5, P = 0.049) or medication for depression or mood changes (OR = 12.9, P = 0.015). Moving to a new house (OR = 10.3, P = 0.053) was more common in those who flared. Only sun exposure (OR = 2.2) and NSAIDs (OR = 1.9) were significant factors in multivariable analysis. Conclusion Certain classes of environmental agents that have been associated with the initiation of DM, including sun exposure and medications, may also play a role in disease flares.
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Affiliation(s)
- Gulnara Mamyrova
- Division of Rheumatology, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Lisa G Rider
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
| | - Alison Ehrlich
- Department of Dermatology, George Washington University, Washington, DC
| | - Olcay Jones
- Pediatric Rheumatology, Department of Pediatrics, Walter Reed National Military Medical Center, Bethesda, MD
| | - Lauren M Pachman
- Pediatric Rheumatology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | | | | | - Lawrence K Jung
- Rheumatology, Children's National Medical Centre, Washington, DC
| | - Frederick W Miller
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
| | - James D Katz
- Division of Rheumatology, George Washington University School of Medicine and Health Sciences, Washington, DC.,National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
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Conde PG, Farhat LC, Braga ALF, Sallum AEM, Farhat SCL, Silva CA. Are prematurity and environmental factors determinants for developing childhood-onset systemic lupus erythematosus? Mod Rheumatol 2017; 28:156-160. [DOI: 10.1080/14397595.2017.1332508] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Paola G. Conde
- Pediatric Rheumatology Unit, Children’s Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Luis C. Farhat
- Pediatric Rheumatology Unit, Children’s Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Alfésio L. F. Braga
- Environmental Exposure and Risk Assessment Group, Collective Health Post-graduation Program, Universidade Católica de Santos, Santos, Brazil
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Adriana E. M. Sallum
- Pediatric Rheumatology Unit, Children’s Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Sylvia C. L. Farhat
- Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
- Department of Emergency, Children’s Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Clovis A. Silva
- Pediatric Rheumatology Unit, Children’s Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
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Stübgen JP. Juvenile dermatomyositis/polymyositis and lymphoma. J Neurol Sci 2017; 377:19-24. [PMID: 28477693 DOI: 10.1016/j.jns.2017.03.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 03/18/2017] [Accepted: 03/21/2017] [Indexed: 12/12/2022]
Abstract
In patients with juvenile dermatomyositis/polymyositis (JDM/PM), malignancy is a rare phenomenon. An extensive workup for neoplastic disease is not routinely indicated, but should be considered if unusual physical findings are noted at JDM/PM diagnosis or during follow-up period. The objective of this literature review was to assess for any association between, and disease profile of, JDM/PM and lymphoma in childhood. Risk determinants of the possible development of lymphoma in the pediatric population with JDM/PM appear to be the degree and duration of inflammatory activity with chronic B-cell activation and/or antigen stimulation; a paraneoplastic relationship is unlikely.
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Affiliation(s)
- Joerg-Patrick Stübgen
- Department of Neurology, Weill Cornell Medicine/New York Presbyterian Hospital, 525 East 68th Street, New York, NY 10065-4885, USA.
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32
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Robazzi T, Bulhões C, Chaves L, Leal C. ENVOLVIMENTO CUTÂNEO GRAVE NA APRESENTAÇÃO CLÍNICA INICIAL DE DERMATOMIOSITE JUVENIL. REVISTA BRASILEIRA DE REUMATOLOGIA 2017. [DOI: 10.1016/j.rbr.2017.07.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Sun G, Hazlewood G, Bernatsky S, Kaplan GG, Eksteen B, Barnabe C. Association between Air Pollution and the Development of Rheumatic Disease: A Systematic Review. Int J Rheumatol 2016; 2016:5356307. [PMID: 27847517 PMCID: PMC5099457 DOI: 10.1155/2016/5356307] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/15/2016] [Accepted: 10/04/2016] [Indexed: 11/17/2022] Open
Abstract
Objective. Environmental risk factors, such as air pollution, have been studied in relation to the risk of development of rheumatic diseases. We performed a systematic literature review to summarize the existing knowledge. Methods. MEDLINE (1946 to September 2016) and EMBASE (1980 to 2016, week 37) databases were searched using MeSH terms and keywords to identify cohort, case-control, and case cross-over studies reporting risk estimates for the development of select rheumatic diseases in relation to exposure of measured air pollutants (n = 8). We extracted information on the population sample and study period, method of case and exposure determination, and the estimate of association. Results. There was no consistent evidence of an increased risk for the development of rheumatoid arthritis (RA) with exposure to NO2, SO2, PM2.5, or PM10. Case-control studies in systemic autoimmune rheumatic diseases (SARDs) indicated higher odds of diagnosis with increasing PM2.5 exposure, as well as an increased relative risk for juvenile idiopathic arthritis (JIA) in American children <5.5 years of age. There was no association with SARDs and NO2 exposure. Conclusion. There is evidence for a possible association between air pollutant exposures and the development of SARDs and JIA, but relationships with other rheumatic diseases are less clear.
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Affiliation(s)
- Gavin Sun
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Glen Hazlewood
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | | | - Gilaad G. Kaplan
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Bertus Eksteen
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Cheryl Barnabe
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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34
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Santos VDP, Medeiros APPD, Lima TACD, Nascimento LFC. Poluentes atmosféricos associados ao peso insuficiente ao nascimento. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2016; 19:89-99. [DOI: 10.1590/1980-5497201600010008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 09/22/2015] [Indexed: 11/22/2022] Open
Abstract
RESUMO: Introdução: Um número crescente de estudos tem mostrado evidências consistentes dos efeitos nocivos da poluição do ar na saúde humana e afetando também o peso do recém-nascido. O objetivo deste estudo é avaliar o efeito da poluição do ar sobre o peso ao nascer, mais especificamente o peso insuficiente ao nascer (entre 2.500 e 2.999 g). Métodos: Trata-se de um estudo transversal com dados relativos a todos os nascidos de mães residentes no Município de São José dos Campos, São Paulo, nos anos de 2006 a 2010. Para examinar a associação entre exposição materna à poluição do ar e o peso ao nascer foi utilizada a regressão logística (univariada e múltipla), considerando-se a média da concentração de cada poluente do 1º e 3º trimestres e dos meses do 1º trimestre. Resultados: Do total de 39.453 nascidos vivos do período estudado, 10.542 (26,7%) recém-nascidos apresentaram peso insuficiente. Na análise logística múltipla, a exposição materna ao material particulado no 1º e 3º trimestre de gestação apresentou maior chance para o nascimento de uma criança com peso insuficiente. Há uma chance de 1,07 (IC95% 1,00 - 1,14) de ocorrência de peso insuficiente para exposição (ao 2o quartil) ao material particulado no 1º trimestre e de 1,10 (IC95% 1,04 - 1,18) para exposição (ao 3o quartil) no 3º trimestre. Conclusão: Os resultados da pesquisa indicam que a exposição materna no 1º e 3º trimestres de gestação à poluição do ar no município de São José dos Campos pode determinar o peso insuficiente de recém-nascidos.
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