Evidence map›Paper›PMID 38910358›Full record

ArticleJournal of pathology and translational medicine2024

Immunohistochemical expression in idiopathic inflammatory myopathies at a single center in Vietnam.

Dat Quoc Ngo, Si Tri Le, Khanh Hoang Phuong Phan, Thao Thi Phuong Doan, Linh Ngoc Khanh Nguyen, Minh Hoang Dang, Thien Thanh Ly, Thu Dang Anh Phan

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Article in Journal of pathology and translational medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

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3citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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3 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Dat Quoc NgoDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Si Tri LeNeurology Center, University Medical Center Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Khanh Hoang Phuong PhanNeurology Center, International NeuroSurgery Hospital, Ho Chi Minh City, Vietnam.
Thao Thi Phuong DoanDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Linh Ngoc Khanh NguyenDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Minh Hoang DangDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Thien Thanh LyDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Thu Dang Anh PhanDepartment of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.

Funding

University of Medicine and Pharmacy at HoChi Minh City
6 · The paper itself

Abstract

backgroundThe identification of idiopathic inflammatory myopathies (IIMs) requires a comprehensive analysis involving clinical manifestations and histological findings. This study aims to provide insights into the histopathological and immunohistochemical aspects of IIMs.

methodsThis retrospective case series involved 56 patients diagnosed with IIMs at the Department of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, from 2019 to 2023. The histology and immunohistochemical expression of HLA-ABC, HLA-DR, C5b-9, Mx1/2/3, and p62 were detected.

resultsWe examined six categories of inflammatory myopathy, including immunemediated necrotizing myopathy (58.9%), dermatomyositis (DM; 23.2%), overlap myositis (8.9%), antisynthetase syndrome (5.4%), inclusion body myositis (IBM; 1.8%), and polymyositis (1.8%). The average age of the patients was 49.7 ± 16.1 years, with a female-to-male ratio of 3:1. Inflammatory cell infiltration in the endomysium was present in 62.5% of cases, perifascicular atrophy was found in 17.8%, and fiber necrosis was observed in 42 cases (75.0%). Rimmed vacuoles were present in 100% of cases in the IBM group. Immunohistochemistry showed the following positivity rates: HLA-ABC (89.2%), HLA-DR (19.6%), C5b-9 (57.1%), and Mx1/2/3 (10.7%). Mx1/2/3 expression was high in DM cases. p62 vacuole deposits were noted in the IBM case. The combination of membrane attack complex and major histocompatibility complex I helped detect IIMs in 96% of cases.

conclusionsThe diagnosis of IIMs and their subtypes should be based on clinical features and histopathological characteristics. Immunohistochemistry plays a crucial role in the diagnosis and differentiation of these subgroups.

Indexed as

C5b-9HLA-ABCHLA-DRIdiopathic inflammatory myopathiesimmunohistochemistryMx1/2/3p62

Identifiers

PMID38910358
PMCPMC11261171

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