Idiopathic inflammatory myopathy: From muscle biopsy to serology

Idiopathic inflammatory myopathies (IIMs) are heterogeneous group of muscle disorders characterized by variable degree of muscle weakness and muscle inflammation. Various classification systems have been proposed for myositis. However, there remains a diagnostic uncertainty due to the presence of ov...

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Main Authors: Ritu Verma, Vimal Kumar Paliwal
Format: Article
Language:English
Published: SAGE Publishing 2020-01-01
Series:Indian Journal of Rheumatology
Subjects:
Online Access:http://www.indianjrheumatol.com/article.asp?issn=0973-3698;year=2020;volume=15;issue=6;spage=123;epage=130;aulast=Verma
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author Ritu Verma
Vimal Kumar Paliwal
author_facet Ritu Verma
Vimal Kumar Paliwal
author_sort Ritu Verma
collection DOAJ
description Idiopathic inflammatory myopathies (IIMs) are heterogeneous group of muscle disorders characterized by variable degree of muscle weakness and muscle inflammation. Various classification systems have been proposed for myositis. However, there remains a diagnostic uncertainty due to the presence of overlapping clinical and pathological features. Similar treatment outcomes to immunosuppressant drugs further add to diagnostic confusion. Introduction of myositis-specific and myositis-associated autoantibodies has widened the disease spectrum of IIMs. Despite being very crucial for the diagnosis and classification of myositis, these autoantibodies are not always present. Therefore, histopathological features and immunohistochemical markers are considered gold standard for the diagnosis of myositis. A correct diagnosis has important clinical and therapeutic implications. In this review, we have focused on salient clinicopathological features and newly developed serological markers in major subtypes of IIMs.
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spelling doaj-art-eefaa10fef8b4ef485b9c9c3920b84082025-08-20T01:47:45ZengSAGE PublishingIndian Journal of Rheumatology0973-36980973-37012020-01-0115612313010.4103/injr.injr_165_20Idiopathic inflammatory myopathy: From muscle biopsy to serologyRitu VermaVimal Kumar PaliwalIdiopathic inflammatory myopathies (IIMs) are heterogeneous group of muscle disorders characterized by variable degree of muscle weakness and muscle inflammation. Various classification systems have been proposed for myositis. However, there remains a diagnostic uncertainty due to the presence of overlapping clinical and pathological features. Similar treatment outcomes to immunosuppressant drugs further add to diagnostic confusion. Introduction of myositis-specific and myositis-associated autoantibodies has widened the disease spectrum of IIMs. Despite being very crucial for the diagnosis and classification of myositis, these autoantibodies are not always present. Therefore, histopathological features and immunohistochemical markers are considered gold standard for the diagnosis of myositis. A correct diagnosis has important clinical and therapeutic implications. In this review, we have focused on salient clinicopathological features and newly developed serological markers in major subtypes of IIMs.http://www.indianjrheumatol.com/article.asp?issn=0973-3698;year=2020;volume=15;issue=6;spage=123;epage=130;aulast=Vermaautoantibodyclassificationdiagnostic criteriainflammatory myopathymuscle biopsy
spellingShingle Ritu Verma
Vimal Kumar Paliwal
Idiopathic inflammatory myopathy: From muscle biopsy to serology
Indian Journal of Rheumatology
autoantibody
classification
diagnostic criteria
inflammatory myopathy
muscle biopsy
title Idiopathic inflammatory myopathy: From muscle biopsy to serology
title_full Idiopathic inflammatory myopathy: From muscle biopsy to serology
title_fullStr Idiopathic inflammatory myopathy: From muscle biopsy to serology
title_full_unstemmed Idiopathic inflammatory myopathy: From muscle biopsy to serology
title_short Idiopathic inflammatory myopathy: From muscle biopsy to serology
title_sort idiopathic inflammatory myopathy from muscle biopsy to serology
topic autoantibody
classification
diagnostic criteria
inflammatory myopathy
muscle biopsy
url http://www.indianjrheumatol.com/article.asp?issn=0973-3698;year=2020;volume=15;issue=6;spage=123;epage=130;aulast=Verma
work_keys_str_mv AT rituverma idiopathicinflammatorymyopathyfrommusclebiopsytoserology
AT vimalkumarpaliwal idiopathicinflammatorymyopathyfrommusclebiopsytoserology