{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T09:52:27Z","timestamp":1791107547935,"version":"4.1.0"},"reference-count":56,"publisher":"American Society for Microbiology","issue":"10","license":[{"start":{"date-parts":[[2006,5,15]],"date-time":"2006-05-15T00:00:00Z","timestamp":1147651200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Virol"],"published-print":{"date-parts":[[2006,5,15]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Rotaviruses infect mature, differentiated enterocytes of the small intestine and, by an unknown mechanism, escape the gastrointestinal tract and cause viremia. The neonatal rat model of rotavirus infection was used to determine the kinetics of viremia, spread, and pathology of rotavirus in extraintestinal organs. Five-day-old rat pups were inoculated intragastrically with an animal (RRV) or human (HAL1166) rotavirus or phosphate-buffered saline. Blood was collected from a subset of rat pups, and following perfusion to remove residual blood, organs were removed and homogenized to analyze rotavirus-specific antigen by enzyme-linked immunosorbent assay and infectious rotavirus by fluorescent focus assay or fixed in formalin for histology and immunohistochemistry. Viremia was detected following rotavirus infection with RRV and HAL1166. The RRV 50% antigenemia dose was 1.8 \u00d7 10\n            <jats:sup>3<\/jats:sup>\n            PFU, and the 50% diarrhea dose was 7.7 \u00d7 10\n            <jats:sup>5<\/jats:sup>\n            PFU, indicating that infection and viremia occurred in the absence of diarrhea and that detecting rotavirus antigen in the blood was a more sensitive measure of infection than diarrhea. Rotavirus antigens and infectious virus were detected in multiple organs (stomach, intestines, liver, lungs, spleen, kidneys, pancreas, thymus, and bladder). Histopathological changes due to rotavirus infection included acute inflammation of the portal tract and bile duct, microsteatosis, necrosis, and inflammatory cell infiltrates in the parenchymas of the liver and lungs. Colocalization of structural and nonstructural proteins with histopathology in the liver and lungs indicated that the histological changes observed were due to rotavirus infection and replication. Replicating rotavirus was also detected in macrophages in the lungs and blood vessels, indicating a possible mechanism of rotavirus dissemination. Extraintestinal infectious rotavirus, but not diarrhea, was observed in the presence of passively or actively acquired rotavirus-specific antibody. These findings alter the previously accepted concept of rotavirus pathogenesis to include not only gastroenteritis but also viremia, and they indicate that rotavirus could cause a broad array of systemic diseases in a number of different organs.\n          <\/jats:p>","DOI":"10.1128\/jvi.80.10.4820-4832.2006","type":"journal-article","created":{"date-parts":[[2006,4,26]],"date-time":"2006-04-26T22:00:29Z","timestamp":1146088829000},"page":"4820-4832","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":120,"title":["Rotavirus Viremia and Extraintestinal Viral Infection in the Neonatal Rat Model"],"prefix":"10.1128","volume":"80","author":[{"given":"Sue E.","family":"Crawford","sequence":"first","affiliation":[{"name":"Department of Molecular Virology and Microbiology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dinesh G.","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"},{"name":"Department of Pediatrics, Baylor College of Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elly","family":"Cheng","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zuzana","family":"Berkova","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph M.","family":"Hyser","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Max","family":"Ciarlet","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"},{"name":"Biologics, Clinical Research Department, Merck &amp; Co., Inc., Blue Bell, Pennsylvania 19422"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Milton J.","family":"Finegold","sequence":"additional","affiliation":[{"name":"Department of Pathology, Texas Children's Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margaret E.","family":"Conner","sequence":"additional","affiliation":[{"name":"Department of Molecular Virology and Microbiology"},{"name":"Michael E. 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