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Article

Immunohistochemical Detection of Propionibacterium acnes in Granulomas for Differentiating Sarcoidosis from Other Granulomatous Diseases Utilizing an Automated System with a Commercially Available PAB Antibody

1
Department of Respiratory Medicine, School of Medicine, Toho University, Tokyo 143-8541, Japan
2
Department of Advanced and Integrated Interstitial Lung Diseases Research, School of Medicine, Toho University, Tokyo 143-8540, Japan
3
Department of Human Pathology, Graduate School and Faculty of Medicine, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
4
Department of Respiratory Medicine and Rheumatology, Graduate School of Biomedical Sciences, Tokushima University, Tokushima 770-8503, Japan
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Department of Pulmonology, Shinjuku Tsurukame Clinic, Tokyo 151-0053, Japan
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Department of Human Pathology, School of Medicine, Juntendo University, Tokyo 113-8421, Japan
7
Department of Pathology, School of Medicine, Toho University, Tokyo 143-8541, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Salam A. Ibrahim
Microorganisms 2021, 9(8), 1668; https://doi.org/10.3390/microorganisms9081668
Received: 27 June 2021 / Revised: 26 July 2021 / Accepted: 30 July 2021 / Published: 4 August 2021
(This article belongs to the Special Issue Infection, Immunity, and Allergy Caused by Propionibacterium acnes)
Propionibacterium acnes is implicated in the pathogenesis of sarcoidosis. We investigated the usefulness of immunohistochemistry (IHC) with a commercially available P. acnes-specific monoclonal antibody (PAB antibody) for differentiating sarcoidosis from other granulomatous diseases. Formalin-fixed paraffin-embedded tissue samples from 94 sarcoidosis patients and 30 control patients with other granulomatous diseases were examined by the original manual IHC method. We also compared the detection frequency of P. acnes in sarcoid granulomas between manual and automated IHC methods. P. acnes was detected in sarcoid granulomas of samples obtained by transbronchial lung biopsy (64%), video-associated thoracic surgery (67%), endobronchial-ultrasound-guided transbronchial-needle aspiration (32%), lymph node biopsy (80%), and skin biopsy (80%) from sarcoidosis patients, but not in any non-sarcoid granulomas of the samples obtained from control patients. P. acnes outside granulomas, however, was frequently detected in both groups. The detection status of P. acnes in granulomas did not correlate with the clinical characteristics of sarcoidosis patients. The automated Leica system exhibited the best detection sensitivity (72%) and almost an identical localization for P. acnes in sarcoid granulomas compared with the manual method. IHC with a PAB antibody is useful for differentiating sarcoidosis from other granulomatous diseases by detecting P. acnes in granulomas. An automated method by the Leica system can be used in pathology laboratories for differential diagnosis of granulomas by IHC with the PAB antibody. View Full-Text
Keywords: sarcoidosis; granuloma; pathogenesis; P. acnes; Propionibacterium acnes; Cutibacterium acnes; immunohistochemistry; PAB antibody sarcoidosis; granuloma; pathogenesis; P. acnes; Propionibacterium acnes; Cutibacterium acnes; immunohistochemistry; PAB antibody
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MDPI and ACS Style

Isshiki, T.; Homma, S.; Eishi, Y.; Yabe, M.; Koyama, K.; Nishioka, Y.; Yamaguchi, T.; Uchida, K.; Yamamoto, K.; Ohashi, K.; Arakawa, A.; Shibuya, K.; Sakamoto, S.; Kishi, K. Immunohistochemical Detection of Propionibacterium acnes in Granulomas for Differentiating Sarcoidosis from Other Granulomatous Diseases Utilizing an Automated System with a Commercially Available PAB Antibody. Microorganisms 2021, 9, 1668. https://doi.org/10.3390/microorganisms9081668

AMA Style

Isshiki T, Homma S, Eishi Y, Yabe M, Koyama K, Nishioka Y, Yamaguchi T, Uchida K, Yamamoto K, Ohashi K, Arakawa A, Shibuya K, Sakamoto S, Kishi K. Immunohistochemical Detection of Propionibacterium acnes in Granulomas for Differentiating Sarcoidosis from Other Granulomatous Diseases Utilizing an Automated System with a Commercially Available PAB Antibody. Microorganisms. 2021; 9(8):1668. https://doi.org/10.3390/microorganisms9081668

Chicago/Turabian Style

Isshiki, Takuma, Sakae Homma, Yoshinobu Eishi, Matsuko Yabe, Kazuya Koyama, Yasuhiko Nishioka, Tetsuo Yamaguchi, Keisuke Uchida, Kurara Yamamoto, Kenichi Ohashi, Atsushi Arakawa, Kazutoshi Shibuya, Susumu Sakamoto, and Kazuma Kishi. 2021. "Immunohistochemical Detection of Propionibacterium acnes in Granulomas for Differentiating Sarcoidosis from Other Granulomatous Diseases Utilizing an Automated System with a Commercially Available PAB Antibody" Microorganisms 9, no. 8: 1668. https://doi.org/10.3390/microorganisms9081668

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