{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T00:49:15Z","timestamp":1787791755591,"version":"build-2784847793"},"posted":{"date-parts":[[2026,6,16]]},"group-title":"Physiology","reference-count":44,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T00:00:00Z","timestamp":1781568000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"NIH","award":["AG079336"],"award-info":[{"award-number":["AG079336"]}]},{"name":"NIH","award":["AG094068"],"award-info":[{"award-number":["AG094068"]}]},{"name":"AHA","award":["25PRE1365157"],"award-info":[{"award-number":["25PRE1365157"]}]},{"award":["TRIBA\/Physiology Faculty Startup Fund"],"award-info":[{"award-number":["TRIBA\/Physiology Faculty Startup Fund"]}],"id":[{"id":"https:\/\/ror.org\/012mef835","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2026,6,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:p>\n                  The middle cerebral artery (MCA) is critical for cerebral blood flow autoregulation and a primary site of cerebrovascular pathology in stroke, Alzheimer\u2019s disease, and vascular dementia. Pressure myography enables precise\n                  <jats:italic>ex vivo<\/jats:italic>\n                  quantification of MCA structure and function, but requires accurate anatomical identification and careful vessel handling to ensure reproducibility across diverse rat genetic models. This chapter provides a comprehensive, step-by-step protocol for isolating and cannulating the rat MCA M2 segment for pressure myography. We detail precise anatomical landmarks to ensure consistent vessel selection across strains. The protocol includes optimized solutions, cannulation techniques, and pressure protocols validated across multiple rat models, including transgenic (TgF344-AD), diabetic (T2DN), consomic (SS.5\n                  <jats:sup>BN<\/jats:sup>\n                  , FHH.1\n                  <jats:sup>BN<\/jats:sup>\n                  ), and genome-edited strains. Extensive troubleshooting notes address common technical challenges, including vessel viability assessment, pressure integrity, and strain-specific autoregulatory ranges. This methodology bridges molecular genetic findings with fundamental cerebrovascular physiology, enabling researchers to characterize myogenic reactivity, passive mechanical properties, and structural remodeling in rat models of cerebrovascular disease.\n                <\/jats:p>","DOI":"10.64898\/2026.06.12.718520","type":"posted-content","created":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T22:10:28Z","timestamp":1781647828000},"source":"Crossref","is-referenced-by-count":1,"title":["Anatomical Identification and Pressure Myography of the Rat Middle Cerebral Artery: A Comprehensive Protocol for Diverse Genetic Models"],"prefix":"10.64898","author":[{"given":"Gilbert C.","family":"Morgan","sequence":"first","affiliation":[{"name":"Physiology, Medical College of Georgia, Augusta University, Augusta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Gregory","sequence":"additional","affiliation":[{"name":"Physiology, Medical College of Georgia, Augusta University, Augusta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yvan","family":"Hanscom-Trofy","sequence":"additional","affiliation":[{"name":"Physiology, Medical College of Georgia, Augusta University, Augusta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Dong","sequence":"additional","affiliation":[{"name":"Physiology, Medical College of Georgia, Augusta University, Augusta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1463-3610","authenticated-orcid":false,"given":"Fan","family":"Fan","sequence":"additional","affiliation":[{"name":"Physiology, Medical College of Georgia, Augusta University, Augusta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"54368","reference":[{"key":"2026061813101161000_2026.06.12.718520v1.1","doi-asserted-by":"crossref","unstructured":"Hedrich, H.J. , Chapter 1 - History, Strains and Models, in The Laboratory Rat, G.J. Krinke , Editor. 2000, Academic Press: London. p. 3\u201316.","DOI":"10.1016\/B978-012426400-7\/50040-6"},{"key":"2026061813101161000_2026.06.12.718520v1.2","doi-asserted-by":"crossref","unstructured":"Reza Khorramizadeh, M. and F. Saadat , Animal models for human disease. 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