COVID-19 infection can cause chemotherapy resistance development in patients with breast cancer and tamoxifen may cause susceptibility to COVID-19 infection

dc.contributor.authorVatansev, Hulya
dc.contributor.authorKadiyoran, Cengiz
dc.contributor.authorCure, Medine Cumhur
dc.contributor.authorCure, Erkan
dc.date.accessioned2024-02-23T14:13:12Z
dc.date.available2024-02-23T14:13:12Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractBreast cancer is the most common cancer in women and is the second most common cause of death in women. Estrogen plays an important role in breast tumor etiopathogenesis. Tamoxifen and other anti-estrogen drugs are used in breast cancer patients who have a positive estrogen receptor (ER). While angiotensin II plays a key role in breast cancer etiology and causes tamoxifen resistance, angiotensin 1-7 has been reported to may reduce the spread and invasion of breast cancer. During the COVID-19 infection, the virus blocks ACE2, and angiotensin 1-7 production discontinued. Angiotensin III production may increase as angiotensin II destruction is reduced. Thus, aminopeptidase upregulation may occur. Increased aminopeptidase may develop resistance to chemotherapy in breast cancer patients receiving chemotherapy. Estrogen can have a protective effect against COVID-19. Estrogen increase causes ER-a upregulation in T lymphocytes. Thus, estrogen increases the release of interferon I and III from T lymphocytes. Increasing interferon I and III alleviates COVID-19 infection. Tamoxifen treatment causes down-regulation, mutation, or loss in estrogen receptors. In the long-term use of tamoxifen, its effects on estrogen receptors can be permanent. Thus, since estrogen receptors are damaged or downregulated, estrogen may not act by binding to these receptors. Tamoxifen is a P-glycoprotein inhibitor, independent of its effect on estrogen receptors. It suppresses T cell functions and interferon release. We think tamoxifen may increase the COVID-19 risk due to its antiestrogen and P-glycoprotein inhibitory effects.en_US
dc.identifier.doi10.1016/j.mehy.2020.110091
dc.identifier.issn0306-9877
dc.identifier.issn1532-2777
dc.identifier.pmid32663742en_US
dc.identifier.scopus2-s2.0-85088151135en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.mehy.2020.110091
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12348
dc.identifier.volume143en_US
dc.identifier.wosWOS:000577511800081en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherChurchill Livingstoneen_US
dc.relation.ispartofMedical Hypothesesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject[Keyword Not Available]en_US
dc.titleCOVID-19 infection can cause chemotherapy resistance development in patients with breast cancer and tamoxifen may cause susceptibility to COVID-19 infectionen_US
dc.typeArticleen_US

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