{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T02:47:10Z","timestamp":1778122030161,"version":"3.51.4"},"reference-count":60,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T00:00:00Z","timestamp":1550793600000},"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":["Journal of Neurotrauma"],"published-print":{"date-parts":[[2019,3]]},"abstract":"<jats:p>\n                    Due to the unmet need for a means to study chronic traumatic encephalopathy (CTE)\n                    <jats:italic toggle=\"yes\">in vivo<\/jats:italic>\n                    , there have been numerous efforts to develop an animal model of this progressive tauopathy. However, there is currently no consensus in the field on an injury model that consistently reproduces the neuropathological and behavioral features of CTE. We have implemented a repetitive Closed-Head Impact Model of Engineered Rotational Acceleration (CHIMERA) injury paradigm in human transgenic (hTau) mice. Animals were subjected to daily subconcussive or concussive injuries for 20 days and tested acutely, 3 months, and 12 months post-injury for deficits in social behavior, anxiety, spatial learning and memory, and depressive behavior. Animals also were assessed for chronic tau pathology, astrogliosis, and white matter degeneration. Repetitive concussive injury caused acute deficits in Morris water maze performance, including reduced swimming speed and increased distance to the platform during visible and hidden platform phases that persisted during the subacute and chronic time-points following injury. We found evidence of white matter disruption in animals injured with subconcussive and concussive injuries, with the most severe disruption occurring in the repetitive concussive injury group. Severity of white matter disruption in the corpus callosum was moderately correlated with swimming speed, while white matter disruption in the fimbria showed weak but significant correlation with worse performance during probe trial. There was no evidence of tau pathology or astrogliosis in sham or injured animals. In summary, we show that repetitive brain injury produces persistent behavioral abnormalities as late as 1 year post-injury that may be related to chronic white matter disruption, although the relationship with CTE remains to be determined.\n                  <\/jats:p>","DOI":"10.1089\/neu.2018.5700","type":"journal-article","created":{"date-parts":[[2018,8,23]],"date-time":"2018-08-23T07:21:05Z","timestamp":1535008865000},"page":"735-755","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":27,"title":["Repetitive Concussive and Subconcussive Injury in a Human Tau Mouse Model Results in Chronic Cognitive Dysfunction and Disruption of White Matter Tracts, But Not Tau Pathology"],"prefix":"10.1177","volume":"36","author":[{"given":"Mihika","family":"Gangolli","sequence":"first","affiliation":[{"name":"Washington University in St. Louis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Benetatos","sequence":"additional","affiliation":[{"name":"University of Queensland","place":["Australia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas J.","family":"Esparza","sequence":"additional","affiliation":[{"name":"Washington University in St. Louis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emeka M.","family":"Fountain","sequence":"additional","affiliation":[{"name":"Washington University in St. Louis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shamilka","family":"Seneviratne","sequence":"additional","affiliation":[{"name":"Washington University in St. Louis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David L.","family":"Brody","sequence":"additional","affiliation":[{"name":"Washington University in St. Louis"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,2,22]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00401-015-1502-4"},{"key":"e_1_3_3_3_2","first-page":"83","article-title":"Psychiatric phenotypes in chronic traumatic encephalopathy","author":"Mahar I.","year":"2017","unstructured":"Mahar I., , Alosco M.L., , and McKee A.C. 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