{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:06:22Z","timestamp":1787022382131,"version":"build-2736575974"},"reference-count":56,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2025,4,1]],"date-time":"2025-04-01T00:00:00Z","timestamp":1743465600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009633","name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","doi-asserted-by":"publisher","award":["1R21HD114073(toLMY)"],"award-info":[{"award-number":["1R21HD114073(toLMY)"]}],"id":[{"id":"10.13039\/100009633","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["physoc.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Physiological Reports"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The mechanisms of sex differences in cerebrovascular function are not well understood. In this study, we determined whether sex differences in middle cerebral artery (MCA) reactivity are accompanied with changes in cerebral or systemic arterial resistance and stiffness in young adult Sprague\u2013Dawley (SD) rats. No differences in systolic or diastolic blood pressures were observed between sexes. Heart rate was higher in the female versus male SD. Left MCA pulsatility index (PI) was lower in female versus male SD. No differences in left intracranial internal carotid artery (ICA) PI were observed between sexes. There were no differences in thoracic aorta or left common carotid artery pulse wave velocity (PWV) between sexes. In isolated MCA segments, female left MCA had lower contraction to potassium, but similar maximal contraction and sensitivity to thromboxane A2 receptor agonist U46619. Pre\u2010incubation with indomethacin lowered maximal response and sensitivity to U46619 in male but not female MCA. Endothelial nitric oxide synthase and vascular smooth muscle layer thromboxane A2 receptor immunoreactivity were greater in female versus male SD. We conclude that sex differences in the MCA reactivity are associated with a differential functional profile of MCA in adult SD rats independent from changes in systemic PWV.<\/jats:p>","DOI":"10.14814\/phy2.70250","type":"journal-article","created":{"date-parts":[[2025,4,2]],"date-time":"2025-04-02T00:11:17Z","timestamp":1743552677000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Sex differences in middle cerebral artery reactivity and hemodynamics independent from changes in systemic arterial stiffness in Sprague\u2013Dawley rats"],"prefix":"10.14814","volume":"13","author":[{"given":"Jonathan W.","family":"Ray","sequence":"first","affiliation":[{"name":"Department of Surgery\/Hypertension and Vascular Research Center Wake Forest University School of Medicine  Winston\u2010Salem North Carolina 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