{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T09:11:08Z","timestamp":1781946668581,"version":"3.54.5"},"reference-count":55,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T00:00:00Z","timestamp":1590969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"name":"AFRI NIFA National Needs Fellowships","award":["AFRI NIFA 2008-35204-04652"],"award-info":[{"award-number":["AFRI NIFA 2008-35204-04652"]}]},{"name":"AFRI NIFA National Needs Fellowships","award":["2016-38420-25289"],"award-info":[{"award-number":["2016-38420-25289"]}]},{"name":"USDA AFRI NIFA Predoctoral Fellowship","award":["2019-67011-29539\/1019321"],"award-info":[{"award-number":["2019-67011-29539\/1019321"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,8,21]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Bovine viral diarrhea virus continues to cost the cattle industry millions of dollars each year despite control measures. The primary reservoirs for bovine viral diarrhea virus are persistently infected animals, which are infected in utero and shed the virus throughout their lifetime. The difficulty in controlling the virus stems from a limited understanding of transplacental transmission and fetal development of immunotolerance. In this study, pregnant bovine viral diarrhea virus na\u00efve heifers were inoculated with bovine viral diarrhea virus on day 75 of gestation and fetal spleens were collected on gestational days 82, 97, 190, and 245. Microarray analysis on splenic RNA from days 82 and 97 revealed an increase in signaling for the innate immune system and antigen presentation to T cells in day 97 persistently infected fetuses compared to controls. Reverse transcription quantitative polymerase chain reaction on select targets validated the microarray revealing a downregulation of type I interferons and lymphocyte markers in day 190 persistently infected fetuses compared to controls. Protein was visualized using western blot and tissue sections were analyzed with hematoxylin and eosin staining and immunohistochemistry. Data collected indicate that fetal immunotolerance to bovine viral diarrhea virus developed between days 97 and 190, with mass attenuation of the immune system on day 190 of gestation. Furthermore, lymphocyte transcripts were initially unchanged then downregulated, suggesting that immunotolerance to the virus stems from a blockage in lymphocyte activation and hence an inability to clear the virus. The identification of lymphocyte derived immunotolerance will aid in the development of preventative and viral control measures to implement before or during pregnancy.<\/jats:p>","DOI":"10.1093\/biolre\/ioaa088","type":"journal-article","created":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T05:10:07Z","timestamp":1591074607000},"page":"560-571","source":"Crossref","is-referenced-by-count":11,"title":["Attenuated lymphocyte activation leads to the development of immunotolerance in bovine fetuses persistently infected with bovine viral diarrhea virus\u2020"],"prefix":"10.1093","volume":"103","author":[{"given":"Hanah M","family":"Georges","sequence":"first","affiliation":[{"name":"Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katie J","family":"Knapek","sequence":"additional","affiliation":[{"name":"Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helle","family":"Bielefeldt-Ohmann","sequence":"additional","affiliation":[{"name":"School of Veterinary Science, The University of Queensland - Gatton Campus, Gatton, QLD, Australia"},{"name":"Australian Infectious Diseases Research Centre, The University of Queensland, St Lucia, QLD, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hana","family":"Van Campen","sequence":"additional","affiliation":[{"name":"Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas R","family":"Hansen","sequence":"additional","affiliation":[{"name":"Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, 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