{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T15:39:01Z","timestamp":1773934741726,"version":"3.50.1"},"reference-count":51,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2024,7,5]],"date-time":"2024-07-05T00:00:00Z","timestamp":1720137600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["alz-journals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Alzheimer's &amp;amp; Dementia"],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>INTRODUCTION<\/jats:title><jats:p>Microtubule (MT) stability is crucial for proper neuronal function. Understanding MT dysregulation is critical for connecting amyloid beta (A\u03b2) and tau\u2010based degenerative events and early changes in presymptomatic Alzheimer's disease (AD). Herein we present positron emission tomography (PET) imaging properties of our MT\u2010PET radiotracer, [<jats:sup>11<\/jats:sup>C]MPC\u20106827, in multiple established AD mouse models.<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>Longitudinal PET, biodistribution, autoradiography, immunohistochemistry, and behavioral studies were conducted at multiple time points in APPswe\/PSEN1dE9 (APP\/PS1), P301S\u2010PS19 (P301S), 5xFAD, and age\u2010matched control mice.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>Longitudinal [<jats:sup>11<\/jats:sup>C]MPC\u20106827 brain imaging showed significant increases in APP\/PS1, P301S, and 5xFAD mice compared to controls. Longitudinal MT\u2010PET correlated positively with biodistribution, autoradiography, and immunohistochemistry results and negatively with behavior data.<\/jats:p><\/jats:sec><jats:sec><jats:title>DISCUSSION<\/jats:title><jats:p>Our study demonstrated significant longitudinal [<jats:sup>11<\/jats:sup>C]MPC\u20106827 PET increases in multiple AD mouse models for the first time. Strong correlations between PET and biomarker data underscored the interplay of MT destabilization, amyloid, and tau pathology in AD. These results suggest [<jats:sup>11<\/jats:sup>C]MPC\u20106827 PET as a promising tool for monitoring MT dysregulation early in AD progression.<\/jats:p><\/jats:sec><jats:sec><jats:title>Highlights<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Longitudinal positron emission tomography (PET) imaging studies using [<jats:sup>11<\/jats:sup>C]MPC\u20106827 in multiple established Alzheimer's disease (AD) mouse models revealed an early onset of microtubule dysregulation, with significant changes in brain radiotracer uptake evident from 2 to 4 months of age.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Intra\u2010group analysis showed a progressive increase in microtubule dysregulation with increasing AD burden, supported by significant correlations between PET imaging data and biodistribution, autoradiography, and molecular pathological markers.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>[<jats:sup>11<\/jats:sup>C]MPC\u20106827 PET imaging demonstrated its efficacy in detecting early microtubule alterations preceding observable behavioral changes in AD mouse models, suggesting its potential for early AD imaging.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>The inclusion of the 5xFAD mouse model further elucidated the impact of amyloid beta (A\u03b2) toxicity on inducing tau hyperphosphorylation\u2010mediated microtubule dysregulation, highlighting the versatility of [<jats:sup>11<\/jats:sup>C]MPC\u20106827 in delineating various aspects of AD pathology.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Our study provides immediate clarity on high uptake of the microtubule\u2010based radiotracer in AD brains in a longitudinal setting, which directly informs clinical utility in A\u03b2\/tau\u2010based studies.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1002\/alz.14083","type":"journal-article","created":{"date-parts":[[2024,7,5]],"date-time":"2024-07-05T07:38:54Z","timestamp":1720165134000},"page":"6082-6093","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Exploring microtubule dynamics in Alzheimer's disease: Longitudinal assessment using [<sup>11<\/sup>C]MPC\u20106827 PET imaging in rodent models of Alzheimer's\u2010related pathology"],"prefix":"10.1002","volume":"20","author":[{"given":"Naresh","family":"Damuka","sequence":"first","affiliation":[{"name":"Department of Radiology Wake Forest School of Medicine  Winston\u2010Salem North Carolina USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Riley E.","family":"Irmen","sequence":"additional","affiliation":[{"name":"Department of Physiology University of Kentucky  Lexington Kentucky 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