{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T18:30:09Z","timestamp":1780425009502,"version":"3.54.1"},"reference-count":32,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T00:00:00Z","timestamp":1648771200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Toxicol Pathol"],"published-print":{"date-parts":[[2022,4]]},"abstract":"<jats:p>\n                    Following implantation of patient-derived xenograft (PDX) breast carcinomas from three separate individuals, 33\/51 female NOD. Cg-Prkdc\n                    <jats:sup>scid<\/jats:sup>\n                    Il2rg\n                    <jats:sup>tm1Wjl<\/jats:sup>\n                    \/SzJ (NSG) mice presented with progressive, unilateral to bilateral, ascending hindlimb paresis to paralysis. Mice were mildly dehydrated, in thin to poor body condition, with reduced to absent hindlimb withdrawal reflex and deep pain sensation. Microscopically, there was variable axonal swelling, vacuolation, and dilation of myelin sheaths within the ventral spinal cord and spinal nerve roots of the thoracolumbar and sacral spinal cord, as well as within corresponding sciatic nerves. Results of PCR screening of PDX samples obtained at necropsy and pooled environmental swabs from the racks housing affected animals were positive for lactate dehydrogenase\u2013elevating virus (LDV). LDV is transmitted through animal-animal contact or commonly as a contaminant of biologic materials of mouse origin. Infection is associated with progressive degenerative myelopathy and neuropathy in strains of mice harboring endogenous retrovirus (AKR, C58), or in immunosuppressed strains (NOD-SCID, Foxn1\n                    <jats:sup>nu<\/jats:sup>\n                    ), and can interfere with normal immune responses and alter engraftment and growth of xenograft tumors in immunosuppressed mice. This is the first reported series of LDV-induced poliomyelitis in NSG mice and should be recognized as a potentially significant confounder to biomedical studies utilizing immunodeficient xenograft models.\n                  <\/jats:p>","DOI":"10.1177\/01926233221091747","type":"journal-article","created":{"date-parts":[[2022,4,22]],"date-time":"2022-04-22T01:41:20Z","timestamp":1650591680000},"page":"390-396","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Degenerative Myelopathy and Neuropathy in NOD.\n                    <i>\n                      Cg-Prkdc\n                      <sup>scid<\/sup>\n                      Il2rg\n                      <sup>tm1Wjl<\/sup>\n                    <\/i>\n                    \/SzJ (NSG) Mice Caused by Lactate Dehydrogenase\u2013Elevating Virus (LDV)"],"prefix":"10.1177","volume":"50","author":[{"given":"P.","family":"Yang","sequence":"first","affiliation":[{"name":"Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Z. 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