Additional diagnostic testing of the 2019 novel coronavirus (SARS-CoV-2)
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REVIEW
Additional diagnostic testing of the 2019 novel coronavirus (SARS‑CoV‑2) Van Giau Vo1,2 · Eva Bagyinszky1,2 · Kyuhwan Shim2 · Yoon Soo Park3 · Seong Soo A. An2 Received: 16 March 2020 / Accepted: 29 June 2020 © The Korean Society of Toxicogenomics and Toxicoproteomics 2020 2020
Abstract Purpose of review Within the last two decades several members of the Coronaviridae family namely Severe Respiratory Syndrome (SARS-CoV) and Middle East Respiratory Syndrome (MERS-CoV) have demonstrated epidemic potential. In late, 2019 an unnamed genetic relative, later named SARS-CoV-2 realized its potential in the highly populous neighborhoods of Wuhan, China. Unchecked, the virus rapidly spread among interconnected communities and related households before containment measures could be in acted. “Appropriate” diagnostic testing in response to the SARS-CoV-2 outbreak should be urgently considered. This perspective review gives particular attention to the potential diagnostic testing of the virus in semen and seminal fluids due to its high levels of angiotensin converting enzyme 2 (ACE2) precursor. Recent findings As many infectious viruses are stable in semen and have transmitted the respective diseases, the presence of SARS-CoV-2 should be tested in semen to assess their stabilities and half-life. As in case of Ebola virus, it was present in semen for longer period in a carrier man without any symptom. Additional hypothesis is that since ACE2 could serve as a mediator for the endocytosis of the previously SARS coronavirus, SARS-CoV-2 may enter the cells through similar mechanism. From the protein expression atlas, high levels of ACE2 precursor were found in intestines and testis. Hence, the testis and seminal fluids could be the host cell and/or reservoir. The results could be used as a suggestive guideline for the sexual activities after the discharge or declaration of disease free. Keywords SARS-CoV-2 · ACE2 · Semen · Testes · Seminal vesicles
Perspective As patients with a novel coronavirus of 2019 (SARS-CoV-2) are increasing in China and other nations unexpectedly, SARS-CoV-2 has become an urgent global health concern with high number of mortality, infectivity and potential secondary/tertiary infections (Zhu et al. 2019). Currently, * Seong Soo A. An [email protected] 1
Department of Industrial and Environmental Engineering, Graduate School of Environment Gachon University, 1342 Sungnam‑daero, Sujung‑gu, Seongnam‑si 461‑701, Gyeonggi‑do, Korea
2
Department of BionanoTechnology, Gachon Medical Research Institute, Gachon University, 1342 Sungnam‑daero, Sujung‑gu, Seongnam‑si 461‑701, Gyeonggi‑do, Korea
3
Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, 363, Dongbaekjukjeon‑daero, Giheung‑gu, Yongin‑si 16995, Gyeonggi‑do, Korea
SARS-CoV-2 could be detected in human clinical specimens of saliva, nasal fluid, blood, feces, and urine by nextgeneration sequencing, real-time RT-PCR, cell culture, and electron microscopy (Zhu et al. 2019). Importantly,
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