Aortic hemodynamics and white matter hyperintensities in normotensive postmenopausal women

Hypertension is associated with development of white matter hyperintensities (WMH) in the brain, which are risk factors for mild cognitive impairment. Hormonal shifts at menopause alter vascular function putting women at risk for both hypertension and WMH. Elevations in aortic hemodynamics precede t...

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Veröffentlicht in:Journal of neurology 2017-05, Vol.264 (5), p.938-945
Hauptverfasser: Barnes, Jill N., Harvey, Ronée E., Zuk, Samantha M., Lundt, Emily S., Lesnick, Timothy G., Gunter, Jeffrey L., Senjem, Matthew L., Shuster, Lynne T., Miller, Virginia M., Jack, Clifford R., Joyner, Michael J., Kantarci, Kejal
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container_end_page 945
container_issue 5
container_start_page 938
container_title Journal of neurology
container_volume 264
creator Barnes, Jill N.
Harvey, Ronée E.
Zuk, Samantha M.
Lundt, Emily S.
Lesnick, Timothy G.
Gunter, Jeffrey L.
Senjem, Matthew L.
Shuster, Lynne T.
Miller, Virginia M.
Jack, Clifford R.
Joyner, Michael J.
Kantarci, Kejal
description Hypertension is associated with development of white matter hyperintensities (WMH) in the brain, which are risk factors for mild cognitive impairment. Hormonal shifts at menopause alter vascular function putting women at risk for both hypertension and WMH. Elevations in aortic hemodynamics precede the appearance of clinically defined hypertension but the relationship of aortic hemodynamics to development of WMH in women is not known. Therefore, this study aimed to characterize aortic hemodynamics in relationship to WMH in postmenopausal women. Aortic systolic and diastolic blood pressure (BP), aortic augmentation index (Alx) and aortic round trip travel time (Aortic T R ) by tonometry were examined in 53 postmenopausal women (age 60 ± 2 years). WMH was calculated from fluid-attenuated inversion recovery MRI using a semi-automated segmentation algorithm. WMH as a fraction of total white matter volume positively associated with aortic systolic BP (regression coefficient = 0.018; p  = 0.04) after adjusting for age. In addition, WMH fraction was positively associated with AIx (0.025; p  = 0.04), and inversely associated with Aortic T R (−0.015; p  = 0.04) after adjusting for age. Our results suggest that assessing aortic hemodynamics may identify individuals at risk for accelerated development of WMH and guide early treatment to reduce WMH burden and cognitive impairment in the future.
doi_str_mv 10.1007/s00415-017-8476-1
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Hormonal shifts at menopause alter vascular function putting women at risk for both hypertension and WMH. Elevations in aortic hemodynamics precede the appearance of clinically defined hypertension but the relationship of aortic hemodynamics to development of WMH in women is not known. Therefore, this study aimed to characterize aortic hemodynamics in relationship to WMH in postmenopausal women. Aortic systolic and diastolic blood pressure (BP), aortic augmentation index (Alx) and aortic round trip travel time (Aortic T R ) by tonometry were examined in 53 postmenopausal women (age 60 ± 2 years). WMH was calculated from fluid-attenuated inversion recovery MRI using a semi-automated segmentation algorithm. WMH as a fraction of total white matter volume positively associated with aortic systolic BP (regression coefficient = 0.018; p  = 0.04) after adjusting for age. In addition, WMH fraction was positively associated with AIx (0.025; p  = 0.04), and inversely associated with Aortic T R (−0.015; p  = 0.04) after adjusting for age. 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In addition, WMH fraction was positively associated with AIx (0.025; p  = 0.04), and inversely associated with Aortic T R (−0.015; p  = 0.04) after adjusting for age. 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subjects Age
Aorta
Blood pressure
Blood Pressure - physiology
Body Mass Index
C-Reactive Protein - metabolism
Circulatory system
Cognitive ability
Female
Health risk assessment
Hemodynamics
Hemodynamics - physiology
Hormone replacement therapy
Humans
Hypertension
Image processing
Image Processing, Computer-Assisted
Leukoencephalopathies - diagnostic imaging
Leukoencephalopathies - physiopathology
Magnetic Resonance Imaging
Medicine
Medicine & Public Health
Menopause
Middle Aged
Neurology
Neuroradiology
Neurosciences
Original Communication
Post-menopause
Postmenopause
Risk factors
Segmentation
Substantia alba
White Matter - diagnostic imaging
title Aortic hemodynamics and white matter hyperintensities in normotensive postmenopausal women
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