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Abstract #1723

Vascular reactivity of the choroid plexus in non-atherosclerotic vasculopathy: choroid plexus activity as a possible marker of ischemic stress

Caleb J. Han1, Spencer Waddle1, Maria Garza1, L. Taylor Davis2, Jarrod Eisma1, Rohan Chitale3, Matthew Fusco3, Colin D. McKnight2, Sky Jones1, Lori C. Jordan1,4, and Manus J. Donahue1,2,5
1Neurology, Vanderbilt University Medical Center, Nashville, TN, United States, 2Radiology, Vanderbilt University Medical Center, Nashville, TN, United States, 3Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, United States, 4Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States, 5Psychiatry, Vanderbilt University Medical Center, Nashville, TN, United States

Synopsis

Keywords: Neurofluids, Stroke, Moyamoya, glymphatic, choroid plexus, cerebrovascular reactivity, CSFThis work applies hypercapnic reactivity and deep-learning techniques to evaluate choroid plexus (ChP) vascular compliance dependence on large arterial patency in intracranial vasculopathy. ChP reactivity was found to be preserved regardless of macrovascular vasculopathy, despite dependencies of resting ChP perfusion on cortical ischemia. Findings support the possibility that changes in resting ChP function in other studies in the presence of arterial vasculopathy and cerebral ischemia may be a response to circulating biochemical markers of ischemic stress, prompting the ChP to attenuate CSF production levels through feedback, rather than vascular mechanisms, to support glial health in ischemia.

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Keywords