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Janssen E, van Dalen JW, Cai M, Jacob MA, Marques J, Duering M, Richard E, Tuladhar AM, de Leeuw FE, Hilkens N. Visit-to-visit blood pressure variability and progression of white matter hyperintensities over 14 years. Blood Press 2024; 33:2314498. [PMID: 38477113 DOI: 10.1080/08037051.2024.2314498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/31/2024] [Indexed: 03/14/2024]
Abstract
Purpose: There is evidence that blood pressure variability (BPV) is associated with cerebral small vessel disease (SVD) and may therefore increase the risk of stroke and dementia. It remains unclear if BPV is associated with SVD progression over years. We examined whether visit-to-visit BPV is associated with white matter hyperintensity (WMH) progression over 14 years and MRI markers after 14 years. Materials and methods: We included participants with SVD from the Radboud University Nijmegen Diffusion tensor Magnetic resonance-imaging Cohort (RUNDMC) who underwent baseline assessment in 2006 and follow-up in 2011, 2015 and 2020. BPV was calculated as coefficient of variation (CV) of BP at all visits. Association between WMH progression rates over 14 years and BPV was examined using linear-mixed effects (LME) model. Regression models were used to examine association between BPV and MRI markers at final visit in participants. Results: A total of 199 participants (60.5 SD 6.6 years) who underwent four MRI scans and BP measurements were included, with mean follow-up of 13.7 (SD 0.5) years. Systolic BPV was associated with higher progression of WMH (β = 0.013, 95% CI 0.005 - 0.022) and higher risk of incident lacunes (OR: 1.10, 95% CI 1.01-1.21). There was no association between systolic BPV and grey and white matter volumes, Peak Skeleton of Mean Diffusivity (PSMD) or microbleed count after 13.7 years. Conclusions: Visit-to-visit systolic BPV is associated with increased progression of WMH volumes and higher risk of incident lacunes over 14 years in participants with SVD. Future studies are needed to examine causality of this association.
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Affiliation(s)
- Esther Janssen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan Willem van Dalen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mengfei Cai
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, PR China
| | - Mina A Jacob
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - José Marques
- Center for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Marco Duering
- Department of Biomedical Engineering, Medical Image Analysis Center (MIAC AG) and qbig, University of Basel, Basel, Switzerland
| | - Edo Richard
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Public and Occupational Health, AMC, Amsterdam Public Health Research Institute, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Anil M Tuladhar
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frank-Erik de Leeuw
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Nina Hilkens
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
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Nezu T, Eto F, Hironaka A, Aoki S, Neshige S, Tasaka S, Kirimoto H, Maruyama H. Vagus nerve size determined via ultrasonography is associated with white matter lesions in patients with vascular risk factors. J Ultrasound 2024; 27:723-732. [PMID: 39073732 PMCID: PMC11333691 DOI: 10.1007/s40477-024-00936-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 06/10/2024] [Indexed: 07/30/2024] Open
Abstract
PURPOSE The cross-sectional area (CSA) of the cervical vagus nerve (VN), as assessed through ultrasonography, might be linked to autonomic nervous system dysfunction. Hypertension is the primary factor associated with cerebral white matter lesions (WMLs), but there is also evidence of a connection with autonomic nervous system dysfunction. However, the associations between WMLs and VN size are unclear. Our objective was to investigate the associations between WMLs and VN size in patients with vascular risk factors. METHODS The CSA of the VN was evaluated using carotid ultrasonography in patients with a history of stroke (acute or chronic) and comorbidities (n = 196, 70.2 ± 12.7 years). Common carotid artery (CCA) intima-media thickness and interadventitial diameter (IAD) were also measured. The severity of the WMLs was assessed by the Fazekas classification and Scheltens' scale. RESULTS The CSA of the right VN (2.08 ± 0.65 mm2) was significantly greater than that of the CSA of the left VN (1.56 ± 0.44 mm2) (P < 0.001). Multiple linear regression analyses revealed that older age, hypertension, increased right CCA IAD, and decreased CSA of the right VN (standardized partial regression coefficient [β] - 0.226; P < 0.001) were independently associated with the severity of WMLs (Scheltens' scale). A decreased CSA of the left VN was also associated with the severity of WMLs (β = - 0.239; P < 0.001). CONCLUSION VN size determined via ultrasonography was associated with the severity of WMLs. While these findings do not establish a causal relationship, they suggest that autonomic nervous system dysfunction is involved in the progression of WMLs.
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Affiliation(s)
- Tomohisa Nezu
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan.
| | - Futoshi Eto
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Akemi Hironaka
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Shiro Aoki
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Shuichiro Neshige
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Saki Tasaka
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Hikari Kirimoto
- Department of Sensorimotor Neuroscience, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8551, Japan
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Morrison C, Oliver MD, Kamal F, Dadar M. Beyond Hypertension: Examining Variable Blood Pressure's Role in Cognition and Brain Structure. J Gerontol B Psychol Sci Soc Sci 2024; 79:gbae121. [PMID: 39012223 PMCID: PMC11308164 DOI: 10.1093/geronb/gbae121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Indexed: 07/17/2024] Open
Abstract
OBJECTIVES Hypertension or high blood pressure (BP) is one of the 12 modifiable risk factors that contribute to 40% of dementia cases that could be delayed or prevented. Although hypertension is associated with cognitive decline and structural brain changes, less is known about the long-term association between variable BP and cognitive/brain changes. This study examined the relationship between variable BP and longitudinal cognitive, white matter hyperintensity (WMH), gray matter (GM), and white matter (WM) volume change over time and postmortem neuropathology. METHODS A total of 4,606 participants (32,776 follow-ups) from RADC Research Resource Sharing Hub (RUSH) and 2,114 participants (9,827 follow-ups) from the Alzheimer's Disease Neuroimaging Initiative (ADNI) were included. Participants were divided into 1 of 3 groups: normal, high, or variable BP. Linear-mixed models investigated the relationship between BP and cognition, brain structure, and neuropathology. RESULTS Older adults with variable BP exhibited the highest rate of cognitive decline followed by high and then normal BP. Increased GM volume loss and WMH burden were also observed in variable compared to high and normal BP. In postmortem neuropathology, both variable and high BP had increased rates compared to normal BP. Results were consistent across the RUSH and ADNI participants, supporting the generalizability of the findings. DISCUSSION Damages potentially associated with variable BP may reduce resilience to future dementia-related pathology and increased the risk of dementia more than that caused by high BP. Improved treatment and management of variable BP may help reduce cognitive decline in the older adult population.
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Affiliation(s)
| | - Michael D Oliver
- Department of Psychological Science and Neuroscience, Belmont University, Nashville, Tennessee, USA
- Belmont Data Collaborative, Belmont University, Nashville, Tennessee, USA
| | - Farooq Kamal
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
| | - Mahsa Dadar
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
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Narita K, Shimbo D, Kario K. Assessment of blood pressure variability: characteristics and comparison of blood pressure measurement methods. Hypertens Res 2024:10.1038/s41440-024-01844-y. [PMID: 39152254 DOI: 10.1038/s41440-024-01844-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 08/19/2024]
Abstract
Previous studies have reported that blood pressure variability (BPV) is associated with the risk of cardiovascular events independent of blood pressure (BP) levels. While there is little evidence from intervention trials examining whether suppressing BPV is useful in preventing cardiovascular disease, it is suggested that detection of abnormally elevated BPV may be useful in reducing cardiovascular events adding by complementing management of appropriate BP levels. Cuffless BP devices can assess beat-to-beat BPV. Although cuffless BP monitoring devices have measurement accuracy issues that need to be resolved, this is an area of research where the evidence is accumulating rapidly, with many publications on beat-to-beat BPV over several decades. Ambulatory BP monitoring (ABPM) can assess 24-hour BPV and nocturnal dipping patterns. Day-to-day BPV and visit-to-visit BPV are assessed by self-measured BP monitoring at home and office BP measurement, respectively. 24 h, day-to-day, and visit-to-visit BPV have been reported to be associated with cardiovascular prognosis. Although there have been several studies comparing whether ABPM and self-measured BP monitoring at home is the superior measurement method of BPV, no strong evidence has been accumulated that indicates whether ABPM or self-measured home BP is superior. ABPM and self-measured BP monitoring have their own advantages and complement each other in the assessment of BPV.
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Affiliation(s)
- Keisuke Narita
- Columbia Hypertension Laboratory, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA.
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
| | - Daichi Shimbo
- Columbia Hypertension Laboratory, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
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Li X, Hui Y, Shi H, Li R, Lv H, Wu Y, Li J, Zhang S, Liang X, Chen S, Zhao P, Wu S, Wang Z. Gray matter volume mediates the association of long-term blood pressure variability with cognitive function in an adult population. Alzheimers Dement 2024; 20:4476-4485. [PMID: 38872387 PMCID: PMC11247661 DOI: 10.1002/alz.13865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 03/26/2024] [Accepted: 04/03/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION We delineated the associations among long-term blood pressure variability (BPV), brain structure, and cognitive function. METHODS We included 1254 adult participants from the Kailuan study. BPV was calculated from 2006 to 2020. Brain magnetic resonance imaging (MRI) and Montreal Cognitive Assessment (MoCA) were conducted in 2020. RESULTS Higher systolic BPV (SBPV) and diastolic BPV (DBPV) were associated with lower total and frontal gray matter (GM) volume, and higher SBPV was associated with lower temporal GM volume. Elevated DBPV was associated with lower volume of total brain and parietal GM, and higher white matter hyperintensity (WMH) volume. Higher SBPV and DBPV were associated with lower MoCA scores. Decreased total and regional GM volume and increased WMH volume were associated with lower MoCA scores. The association between SBPV and cognitive function was mediated by total, frontal, and temporal GM volume. DISCUSSION GM volume may play key roles in the association between SBPV and cognitive function. HIGHLIGHTS SBPV and DBPV were negatively associated with total and regional brain volume. SBPV and DBPV were negatively associated with cognitive function. Decreased brain volume was associated with cognitive decline. GM volume mediated the negative association between SBPV and cognitive function.
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Affiliation(s)
- Xiaoshuai Li
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ying Hui
- Department of MRI, Kailuan General Hospital, Tangshan, Hebei Province, China
| | - Huijing Shi
- Department of Rheumatology and Immunology, Kailuan General Hospital, Tangshan, Hebei Province, China
| | - Rui Li
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Han Lv
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yuntao Wu
- Department of Cardiology, Kailuan General Hospital, Tangshan, Hebei Province, China
| | - Jing Li
- Department of Radiology, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
| | - Shun Zhang
- Department of Psychiatry, Kailuan Mental Health Centre, Tangshan, Hebei Province, China
| | - Xiaoliang Liang
- Department of Psychiatry, Kailuan Mental Health Centre, Tangshan, Hebei Province, China
| | - Shuohua Chen
- Department of Cardiology, Kailuan General Hospital, Tangshan, Hebei Province, China
| | - Pengfei Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Shouling Wu
- Department of Cardiology, Kailuan General Hospital, Tangshan, Hebei Province, China
| | - Zhenchang Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Dallaire-Théroux C, Smith C, Duchesne S. Clinical Predictors of Postmortem Amyloid and Nonamyloid Cerebral Small Vessel Disease in Middle-Aged to Older Adults. Neurol Clin Pract 2024; 14:e200271. [PMID: 38525067 PMCID: PMC10959170 DOI: 10.1212/cpj.0000000000200271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/09/2024] [Indexed: 03/26/2024]
Abstract
Background and Objectives Sporadic cerebral small vessel disease (CSVD) is a class of important pathologic processes known to affect the aging brain and to contribute to cognitive impairment. We aimed to identify clinical risk factors associated with postmortem CSVD in middle-aged to older adults. Methods We developed and tested risk models for their predictive accuracy of a pathologic diagnosis of nonamyloid CSVD and cerebral amyloid angiopathy (CAA) in a retrospective sample of 160 autopsied cases from the Edinburgh Brain Bank. Individuals aged 40 years and older covering the spectrum of healthy aging and common forms of dementia (i.e., highly-prevalent etiologies such as Alzheimer disease (AD), vascular cognitive impairment (VCI), and mixed dementia) were included. We performed binomial logistic regression models using sample splitting and cross-validation methods. Demographics, lifestyle habits, traditional vascular risk factors, chronic medical conditions, APOE4, and cognitive status were assessed as potential predictors. Results Forty percent of our sample had a clinical diagnosis of dementia (AD = 33, VCI = 26 and mixed = 5) while others were cognitively healthy (n = 96). The mean age at death was 73.8 (SD 14.1) years, and 40% were female. The presence of none-to-mild vs moderate-to-severe nonamyloid CSVD was predicted by our model with good accuracy (area under the curve [AUC] = 0.84, sensitivity [SEN] = 72%, specificity [SPE] = 95%), with the most significant clinical predictors being age, history of cerebrovascular events, and cognitive impairment. The presence of CAA pathology was also predicted with high accuracy (AUC = 0.86, SEN = 93%, SPE = 79%). Significant predictors included alcohol intake, history of cerebrovascular events, and cognitive impairment. In a subset of atypical dementias (n = 24), our models provided poor predictive performance for both nonamyloid CSVD (AUC = 0.50) and CAA (AUC = 0.43). Discussion CSVD pathology can be predicted with high accuracy based on clinical factors in patients within the spectrum of AD, VCI, and normal aging. Whether this prediction can be enhanced by the addition of fluid and neuroimaging biomarkers warrants additional study. Improving our understanding of clinical determinants of vascular brain health may lead to novel strategies in the prevention and treatment of vascular etiologies contributing to cognitive decline. Classification of Evidence This study provides Class II evidence that selected clinical factors accurately distinguish between middle-aged to older adults with and without cerebrovascular small vessel disease (amyloid and nonamyloid) pathology.
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Affiliation(s)
- Caroline Dallaire-Théroux
- CERVO Brain Research Center (CD-T, SD); Faculty of Medicine (CD-T), Université Laval; Department of Neurological Sciences (CD-T), Centre Hospitalier Universitaire de Québec, Canada; Academic Neuropathology (CS), Centre for Clinical Brain Sciences, University of Edinburgh, United Kingdom; and Department of Radiology and Nuclear Medicine (SD), Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Colin Smith
- CERVO Brain Research Center (CD-T, SD); Faculty of Medicine (CD-T), Université Laval; Department of Neurological Sciences (CD-T), Centre Hospitalier Universitaire de Québec, Canada; Academic Neuropathology (CS), Centre for Clinical Brain Sciences, University of Edinburgh, United Kingdom; and Department of Radiology and Nuclear Medicine (SD), Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Simon Duchesne
- CERVO Brain Research Center (CD-T, SD); Faculty of Medicine (CD-T), Université Laval; Department of Neurological Sciences (CD-T), Centre Hospitalier Universitaire de Québec, Canada; Academic Neuropathology (CS), Centre for Clinical Brain Sciences, University of Edinburgh, United Kingdom; and Department of Radiology and Nuclear Medicine (SD), Faculty of Medicine, Université Laval, Quebec City, Canada
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Pacholko A, Iadecola C. Hypertension, Neurodegeneration, and Cognitive Decline. Hypertension 2024; 81:991-1007. [PMID: 38426329 PMCID: PMC11023809 DOI: 10.1161/hypertensionaha.123.21356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Elevated blood pressure is a well-established risk factor for age-related cognitive decline. Long linked to cognitive impairment on vascular bases, increasing evidence suggests a potential association of hypertension with the neurodegenerative pathology underlying Alzheimer disease. Hypertension is well known to disrupt the structural and functional integrity of the cerebral vasculature. However, the mechanisms by which these alterations lead to brain damage, enhance Alzheimer pathology, and promote cognitive impairment remain to be established. Furthermore, critical questions concerning whether lowering blood pressure by antihypertensive medications prevents cognitive impairment have not been answered. Recent developments in neurovascular biology, brain imaging, and epidemiology, as well as new clinical trials, have provided insights into these critical issues. In particular, clinical and basic findings on the link between neurovascular dysfunction and the pathobiology of neurodegeneration have shed new light on the overlap between vascular and Alzheimer pathology. In this review, we will examine the progress made in the relationship between hypertension and cognitive impairment and, after a critical evaluation of the evidence, attempt to identify remaining knowledge gaps and future research directions that may advance our understanding of one of the leading health challenges of our time.
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Affiliation(s)
- Anthony Pacholko
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Costantino Iadecola
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
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Ruthirakuhan M, Swardfager W, Xiong L, MacIntosh BJ, Rabin JS, Lanctôt KL, Ottoy J, Ramirez J, Keith J, Black SE. Investigating the impact of hypertension with and without diabetes on Alzheimer's disease risk: A clinico-pathological study. Alzheimers Dement 2024; 20:2766-2778. [PMID: 38425134 PMCID: PMC11032528 DOI: 10.1002/alz.13717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 03/02/2024]
Abstract
INTRODUCTION Hypertension and diabetes are common cardiovascular risk factors that increase Alzheimer's disease (AD) risk. However, it is unclear whether AD risk differs in hypertensive individuals with and without diabetes. METHODS Cognitively normal individuals (N = 11,074) from the National Alzheimer's Coordinating Center (NACC) were categorized as having (1) hypertension with diabetes (HTN+/DM+), (2) hypertension without diabetes (HTN+/DM-), or (3) neither (HTN-/DM-). AD risk in HTN+/DM+ and HTN+/DM- was compared to HTN-/DM-. This risk was then investigated in those with AD neuropathology (ADNP), cerebral amyloid angiopathy (CAA), cerebrovascular neuropathology (CVNP), arteriolosclerosis, and atherosclerosis. Finally, AD risk in HTN-/DM+ was compared to HTN-/DM-. RESULTS Seven percent (N = 830) of individuals developed AD. HTN+/DM+ (hazard ratio [HR] = 1.31 [1.19-1.44]) and HTN+/DM- (HR = 1.24 [1.17-1.32]) increased AD risk compared to HTN-/DM-. AD risk was greater in HTN+/DM+ with ADNP (HR = 2.10 [1.16-3.79]) and CAA (HR = 1.52 [1.09-2.12]), and in HTN+/DM- with CVNP (HR = 1.54 [1.17-2.03]). HTN-/DM+ also increased AD risk (HR = 1.88 [1.30-2.72]) compared to HTN-/DM-. DISCUSSION HTN+/DM+ and HTN+/DM- increased AD risk compared to HTN-/DM-, but pathological differences between groups suggest targeted therapies may be warranted based on cardiovascular risk profiles. HIGHLIGHTS AD risk was studied in hypertensive (HTN+) individuals with/without diabetes (DM+/-). HTN+/DM+ and HTN+/DM- both had an increased risk of AD compared to HTN-/DM-. Post mortem analysis identified neuropathological differences between HTN+/DM+ and HTN+/DM-. In HTN+/DM+, AD risk was greater in those with AD neuropathology and CAA. In HTN+/DM-, AD risk was greater in those with cerebrovascular neuropathology.
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Affiliation(s)
- Myuri Ruthirakuhan
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
| | - Walter Swardfager
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Department of Pharmacology and ToxicologyUniversity of TorontoTorontoOntarioCanada
| | - Lisa Xiong
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Department of Pharmacology and ToxicologyUniversity of TorontoTorontoOntarioCanada
| | - Bradley J. MacIntosh
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Department of Medical BiophysicsUniversity of TorontoTorontoOntarioCanada
| | - Jennifer S. Rabin
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Division of NeurologyDepartment of MedicineSunnybrook Health Sciences CentreTorontoOntarioCanada
- Harquail Centre for NeuromodulationSunnybrook Research InstituteTorontoOntarioCanada
| | - Krista L. Lanctôt
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Department of Pharmacology and ToxicologyUniversity of TorontoTorontoOntarioCanada
- Department of PsychiatrySunnybrook Health Sciences CentreTorontoOntarioCanada
| | - Julie Ottoy
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
| | - Joel Ramirez
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
| | - Julia Keith
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Department of Anatomic PathologySunnybrook Health Sciences CentreTorontoOntarioCanada
| | - Sandra E. Black
- Dr. Sandra Black Centre for Brain Resilience and RecoveryHurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
- Division of NeurologyDepartment of MedicineSunnybrook Health Sciences CentreTorontoOntarioCanada
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Sible IJ, Jang JY, Blanken AE, Alitin JPM, Engstrom A, Dutt S, Marshall AJ, Kapoor A, Shenasa F, Gaubert A, Nguyen A, Ferrer F, Bradford DR, Rodgers KE, Mather M, Duke Han S, Nation DA. Short-term blood pressure variability and brain functional network connectivity in older adults. NEUROIMAGE. REPORTS 2024; 4:100198. [PMID: 38699510 PMCID: PMC11064972 DOI: 10.1016/j.ynirp.2024.100198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Background Blood pressure variability is increasingly linked with cerebrovascular disease and Alzheimer's disease, independent of mean blood pressure levels. Elevated blood pressure variability is also associated with attenuated cerebrovascular reactivity, which may have implications for functional hyperemia underpinning brain network connectivity. It remains unclear whether blood pressure variability is related to functional network connectivity. We examined relationships between beat-to-beat blood pressure variability and functional connectivity in brain networks vulnerable to aging and Alzheimer's disease. Methods 53 community-dwelling older adults (mean [SD] age = 69.9 [7.5] years, 62.3% female) without history of dementia or clinical stroke underwent continuous blood pressure monitoring and resting state fMRI scan. Blood pressure variability was calculated as variability independent of mean. Functional connectivity was determined by resting state fMRI for several brain networks: default, salience, dorsal attention, fronto-parietal, and language. Multiple linear regression examined relationships between short-term blood pressure variability and functional network connectivity. Results Elevated short-term blood pressure variability was associated with lower functional connectivity in the default network (systolic: standardized ß = -0.30 [95% CI -0.59, -0.01], p = .04). There were no significant associations between blood pressure variability and connectivity in other functional networks or between mean blood pressure and functional connectivity in any network. Discussion Older adults with elevated short-term blood pressure variability exhibit lower resting state functional connectivity in the default network. Findings support the role of blood pressure variability in neurovascular dysfunction and Alzheimer's disease. Blood pressure variability may represent an understudied early vascular risk factor for neurovascular dysfunction relevant to Alzheimer's disease, with potential therapeutic implications.
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Affiliation(s)
- Isabel J. Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Jung Yun Jang
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA 92697, USA
| | - Anna E. Blanken
- San Francisco Veterans Affairs Health Care System, San Francisco, CA, 94121, USA
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94158, USA
| | - John Paul M. Alitin
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Allie Engstrom
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Shubir Dutt
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94158, USA
| | - Anisa J. Marshall
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Arunima Kapoor
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Fatemah Shenasa
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Aimée Gaubert
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Amy Nguyen
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Farrah Ferrer
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - David R. Bradford
- Center for Innovation in Brain Science, Department of Pharmacology, The University of Arizona, Tucson, AZ, 85721, USA
| | - Kathleen E. Rodgers
- Center for Innovation in Brain Science, Department of Pharmacology, The University of Arizona, Tucson, AZ, 85721, USA
| | - Mara Mather
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - S. Duke Han
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
- Department of Family Medicine, Keck School of Medicine of University of Southern California, Alhambra, CA 91803, USA
| | - Daniel A. Nation
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
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10
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Chen Y, Ma Y, Qin J, Wei X, Yang Y, Yuan Y, Yan F, Huo X, Han L. Blood pressure variability predicts poor outcomes in acute stroke patients without thrombolysis: a systematic review and meta-analysis. J Neurol 2024; 271:1160-1169. [PMID: 38036920 DOI: 10.1007/s00415-023-12054-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Stroke is a significant medical condition, and blood pressure stands out as the most prevalent treatable risk factor associated with it. Researches link blood pressure variability (BPV) with stroke; however, the specific relationship between with the outcomes of stroke patients remains unclear. As blood pressure variability and mean blood pressure are interrelated, it remains uncertain whether BPV adds additional information to understanding the outcome of acute stroke patients. OBJECTIVE To systematically review studies investigating the association between blood pressure variability and prognosis in acute stroke patients. METHODS Embase, PubMed, Web of Science, and the Cochrane Library were searched for English language full-text articles from the inception to 1 January 2023. Stroke patients aged ≥ 18 years were included in this analysis. Stroke types were not restricted. RESULTS This meta-analysis shows that higher systolic blood pressure variability is linked to a higher risk of poor outcome, including function disability, mortality, early neurological deterioration, and stroke recurrence, among acute stroke patients without thrombolysis. A higher diastolic blood pressure variability is linked with to a higher risk of mortality and functional disability. CONCLUSIONS This review reveals that blood pressure variability is a novel and clinically relevant risk factor for stroke patients' outcome. Future studies should investigate how best to measure and define BPV in acute stroke. Larger studies are warranted to provide more robust evidence in this area.
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Affiliation(s)
- Yajing Chen
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Yuxia Ma
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China.
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730030, Gansu Province, China.
| | - Jiangxia Qin
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Xiaoqin Wei
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Yiyi Yang
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Yue Yuan
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Fanghong Yan
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China
| | - Xiaoning Huo
- The Third People's Hospital of Lanzhou, No.130 Jianlan New Village, Lanzhou, Gansu Province, China
| | - Lin Han
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, Gansu Province, China.
- Department of Nursing, Gansu Provincial Hospital, No. 204 Donggang West Road, Lanzhou, Gansu Province, China.
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11
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Massengale K, Barnes VA, Williams C, Mansuri A, Norland K, Altvater M, Bailey H, Harris RA, Su S, Wang X. Nocturnal blood pressure dipping, blood pressure variability, and cognitive function in early and middle-aged adults. J Clin Hypertens (Greenwich) 2024; 26:235-240. [PMID: 38332546 PMCID: PMC10918738 DOI: 10.1111/jch.14764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/28/2023] [Accepted: 12/03/2023] [Indexed: 02/10/2024]
Abstract
Higher nighttime blood pressure (BP), less BP dipping, and higher BP variability have been linked with worse cognitive function in the elderly. The goal of this study is to explore whether this relationship already exists in early and middle adulthood. We further examined whether ethnic differences between African Americans and European Americans in BP parameters can explain ethnic differences in cognitive function. 24-h ambulatory BP monitoring and cognitive function were obtained from 390 participants (average age: 37.2 years with a range of 25-50; 54.9% African Americans; 63.6% females). We observed that higher nighttime BP, decreased dipping, and higher variability were significantly associated with lower scores on the Picture Sequence Memory Test. Significant negative associations between variability and overall composite scores were also observed. No significant associations between average 24-h or daytime BP and cognitive function were observed. Ethnic differences in nighttime diastolic pressures and dipping can explain 6.81% to 10.8% of the ethnicity difference in the score of the Picture Sequence Memory Test (ps < .05). This study suggests that the associations of nighttime BP, dipping, and variability with cognitive function already exist in young and middle-aged adults. Ethnic differences in nighttime BP and dipping can at least partially explain ethnic differences in cognitive function. The stronger association of these parameters with cognitive function than daytime or average BP in this age range raises the importance of using ambulatory BP monitoring for more precise detection of abnormal BP patterns in young adulthood.
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Affiliation(s)
| | - Vernon A. Barnes
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Celestin Williams
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Asifhusen Mansuri
- Division of Pediatric Nephrology and HypertensionChildren's Hospital of GeorgiaMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Kimberly Norland
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Michelle Altvater
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Hallie Bailey
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Ryan A. Harris
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Shaoyong Su
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
| | - Xiaoling Wang
- Georgia Prevention InstituteMedical College of GeorgiaAugusta UniversityAugustaGeorgiaUSA
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12
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Martin SS, Aday AW, Almarzooq ZI, Anderson CAM, Arora P, Avery CL, Baker-Smith CM, Barone Gibbs B, Beaton AZ, Boehme AK, Commodore-Mensah Y, Currie ME, Elkind MSV, Evenson KR, Generoso G, Heard DG, Hiremath S, Johansen MC, Kalani R, Kazi DS, Ko D, Liu J, Magnani JW, Michos ED, Mussolino ME, Navaneethan SD, Parikh NI, Perman SM, Poudel R, Rezk-Hanna M, Roth GA, Shah NS, St-Onge MP, Thacker EL, Tsao CW, Urbut SM, Van Spall HGC, Voeks JH, Wang NY, Wong ND, Wong SS, Yaffe K, Palaniappan LP. 2024 Heart Disease and Stroke Statistics: A Report of US and Global Data From the American Heart Association. Circulation 2024; 149:e347-e913. [PMID: 38264914 DOI: 10.1161/cir.0000000000001209] [Citation(s) in RCA: 124] [Impact Index Per Article: 124.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
BACKGROUND The American Heart Association (AHA), in conjunction with the National Institutes of Health, annually reports the most up-to-date statistics related to heart disease, stroke, and cardiovascular risk factors, including core health behaviors (smoking, physical activity, nutrition, sleep, and obesity) and health factors (cholesterol, blood pressure, glucose control, and metabolic syndrome) that contribute to cardiovascular health. The AHA Heart Disease and Stroke Statistical Update presents the latest data on a range of major clinical heart and circulatory disease conditions (including stroke, brain health, complications of pregnancy, kidney disease, congenital heart disease, rhythm disorders, sudden cardiac arrest, subclinical atherosclerosis, coronary heart disease, cardiomyopathy, heart failure, valvular disease, venous thromboembolism, and peripheral artery disease) and the associated outcomes (including quality of care, procedures, and economic costs). METHODS The AHA, through its Epidemiology and Prevention Statistics Committee, continuously monitors and evaluates sources of data on heart disease and stroke in the United States and globally to provide the most current information available in the annual Statistical Update with review of published literature through the year before writing. The 2024 AHA Statistical Update is the product of a full year's worth of effort in 2023 by dedicated volunteer clinicians and scientists, committed government professionals, and AHA staff members. The AHA strives to further understand and help heal health problems inflicted by structural racism, a public health crisis that can significantly damage physical and mental health and perpetuate disparities in access to health care, education, income, housing, and several other factors vital to healthy lives. This year's edition includes additional global data, as well as data on the monitoring and benefits of cardiovascular health in the population, with an enhanced focus on health equity across several key domains. RESULTS Each of the chapters in the Statistical Update focuses on a different topic related to heart disease and stroke statistics. CONCLUSIONS The Statistical Update represents a critical resource for the lay public, policymakers, media professionals, clinicians, health care administrators, researchers, health advocates, and others seeking the best available data on these factors and conditions.
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13
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Huang X, Deng S, Xie W, Zheng F. Time in target range of systolic blood pressure and cognitive outcomes in patients with hypertension. J Am Geriatr Soc 2024; 72:423-432. [PMID: 37916517 DOI: 10.1111/jgs.18641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/03/2023] [Accepted: 10/09/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Blood pressure (BP) is a dynamic measure that fluctuates over time. However, conventional BP control indicators may not adequately reflect the variability of BP during a period of time. METHODS We performed a secondary analysis of the Systolic Blood Pressure Intervention Trial (SPRINT), which compared systolic blood pressure (SBP) targets of <120 mmHg (intensive) and <140 mmHg (standard) among patients with hypertension and high cardiac risks. The target ranges were defined as 110 to 130 mmHg in intensive treatment arm and 120 to 140 mmHg in standard treatment arm, respectively. Time in target range (TTR) was calculated based on SBP measurements recorded during the first 3-month follow-up using linear interpolation method. The Fine-Gray competing risk regression models were used to evaluate the association between TTR and cognitive outcomes. RESULTS A total of 7965 patients with the mean (SD) age of 68.0 (9.2) years were included, and 35% were female. Patients with higher TTR were younger, more likely to be male and take <3 BP-lowering agents. Compared to the last quartile, the first quartile of TTR was significantly associated with a higher risk of probable dementia (HR: 1.74; 95% CI: 1.22-2.46; p = 0.002) and the composite of probable dementia or mild cognitive impairment (HR: 1.26; 95% CI: 1.03-1.55; p = 0.025). The risk of probable dementia and the composite outcome increased with per quartile decrease of TTR (HR: 1.18; 95% CI: 1.06-1.30; p = 0.002 and HR: 1.07; 95% CI: 1.00-1.14; p = 0.036). Sensitivity analyses showed similar results after adjusting mean SBP during the first 3-month follow-up. CONCLUSIONS In this secondary analysis of SPRINT data, TTR was independently associated with probable dementia among patients with hypertension, suggesting that TTR could be used as a practical metric of BP control to evaluate the risk of dementia in older adults. REGISTRATION URL: https://www. CLINICALTRIALS gov; Identifier: NCT01206062.
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Affiliation(s)
- Xinghe Huang
- School of Nursing, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Sicheng Deng
- School of Nursing, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wuxiang Xie
- Peking University Clinical Research Institute, Peking University First Hospital, Beijing, China
| | - Fanfan Zheng
- School of Nursing, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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14
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Morrison C, Oliver MD, Kamal F, Dadar M. Beyond Hypertension: Examining Variable Blood Pressure's Role in Cognition and Brain Structure. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.15.24301335. [PMID: 38293179 PMCID: PMC10827268 DOI: 10.1101/2024.01.15.24301335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Importance Hypertension is a known risk factor for cognitive decline and structural brain changes in aging and dementia. In addition to high blood pressure (BP), individuals may also experience variable BP, meaning that their BP fluctuates between normal and high. It is currently unclear what the effects of variable BP are on cognition and brain structure. Objective To investigate the influence of BP on cognition and brain structure in older adults. Design Setting and Participants This longitudinal cohort study included data from the Rush Alzheimer's Disease Center Research Resource Sharing Hub (RUSH) and the Alzheimer's Disease Neuroimaging Initiative (ADNI). Participants from the two studies were included if they had BP measurements and either cognitive scores or MRI scans from at least one visit. Main Outcomes and Measures Longitudinal gray matter, white matter, white matter hyperintensity volumes, postmortem neuropathology information, as well as cognitive test scores. Results A total of 4606 participants (3429 females, mean age = 76.8) with 32776 follow-ups (mean = 7 years) from RUSH and 2114 participants (1132 females, mean age = 73.3) with 9827 follow-ups (mean = 3 years) from ADNI were included in this study. Participants were divided into one of three groups: 1) normal BP, high BP, or variable BP. Older adults with variable BP exhibited the highest rate of cognitive decline followed by high BP and then normal BP. Increased GM volume loss and WMH burden was also observed in variable BP compared to high and normal BP. With respect to post-mortem neuropathology, both variable and high BP had increased severities compared to normal BP. Importantly, results were consistent across the RUSH and ADNI participants, supporting the generalizability of the findings. Conclusion and Relevance Limited research has examined the long-term impact of variable BP on cognition and brain structure. These findings show the importance that both high and variable BP have on cognitive decline and structural brain changes. Structural damages caused by variable BP may reduce resilience to future dementia-related pathology and increased risk of dementia. Improved treatment and management of variable BP may help reduce cognitive decline in the older adult population.
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Affiliation(s)
| | - Michael D Oliver
- Department of Psychological Science and Neuroscience, Belmont University, Nashville, Tennessee, United States
- Belmont Data Collaborative, Belmont University, Nashville, Tennessee, United States
| | - Farooq Kamal
- Department of Psychiatry, McGill University, Montreal, Quebec, H3A 1A1, Canada
- Douglas Mental Health University Institute, Montreal, Quebec, H4H 1R3, Canada
| | - Mahsa Dadar
- Department of Psychiatry, McGill University, Montreal, Quebec, H3A 1A1, Canada
- Douglas Mental Health University Institute, Montreal, Quebec, H4H 1R3, Canada
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15
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Sible IJ, Nation DA. Blood Pressure Variability and Plasma Alzheimer's Disease Biomarkers in the SPRINT Trial. J Alzheimers Dis 2024; 97:1851-1860. [PMID: 38306042 DOI: 10.3233/jad-230930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Background Recent observational studies suggest higher blood pressure (BP) variability (BPV) is associated with Alzheimer's disease (AD) biomarkers amyloid-beta (Aβ) and tau. Less is known about relationships in interventional cohorts with strictly controlled mean BP levels. Objective Investigate the longitudinal relationship between BPV and change in plasma AD biomarkers under standard versus intensive BP treatment. Methods In this post hoc analysis of the SPRINT trial, 457 participants (n = 206 in standard group, n = 251 in intensive group) underwent repeated BP measurement between baseline and 12-months follow-up, and venipuncture at baseline and median (IQR) 3.5 (3.0-4.0) years later to determine plasma AD biomarkers total tau and Aβ1-42:Aβ1-40 ratio. BPV was calculated as tertiles of variability independent of mean. Linear mixed models investigated the effect of BPV×time on AD biomarker levels. Results Higher BPV was associated with increased levels of total tau in the standard group (β [95% CI] 1st versus 3rd tertiles of BPV: 0.21 [0.02, 0.41], p = 0.035), but not in the intensive group (β [95% CI] 1st versus 3rd tertiles of BPV: -0.02 [-0.19, 0.16], p = 0.843). BPV was not associated with Aβ 1-42:Aβ 1-40 ratio in either group. Mean BP was not associated with biomarkers. Conclusions Higher BPV was associated with increased plasma total tau under standard BP treatment. Findings add new evidence to prior observational work linking BPV to AD pathophysiology and suggest that, despite strict control of mean BP, BPV remains a risk for pathophysiological change underlying risk for AD.
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Affiliation(s)
- Isabel J Sible
- Department of Psychology, University of Southern California, Los Angeles, CA, USA
| | - Daniel A Nation
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, University of Southern California, Los Angeles, CA, USA
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16
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Starmans NLP, Kappelle LJ, Muller M, Staals J, Teunissen CE, Biessels GJ, van der Flier WM, Wolters FJ. Blood Pressure Variability and Plasma Biomarkers of Neuronal Injury and Alzheimer's Disease: A Clinic-Based Study of Patients with Diseases Along the Heart-Brain Axis. J Alzheimers Dis 2024; 99:1207-1215. [PMID: 38788076 PMCID: PMC11191465 DOI: 10.3233/jad-240119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2024] [Indexed: 05/26/2024]
Abstract
Higher blood pressure variability (BPV) predisposes to cognitive decline. To investigate underlying mechanisms, we measured 24-h ambulatory BPV, nocturnal dipping and orthostatic hypotension in 518 participants with vascular cognitive impairment, carotid occlusive disease, heart failure, or reference participants. We determined cross-sectional associations between BPV indices and plasma biomarkers of neuronal injury (neurofilament light chain) and Alzheimer's disease (phosphorylated-tau-181 and Aβ42/Aβ40). None of the BPV indices were significantly associated with any of the biomarkers. Hence, in patients with diseases along the heart-brain axis, we found no evidence for an association between BPV and selected markers of neuronal injury or Alzheimer's disease.
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Affiliation(s)
| | - Laurens Jaap Kappelle
- Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Majon Muller
- Department of Internal Medicine, Geriatrics Section, Amsterdam Cardiovascular Science, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
| | - Julie Staals
- Department of Neurology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Charlotte Elisabeth Teunissen
- Department of Clinical Chemistry, Neurochemistry Laboratory, Amsterdam Neuroscience, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
| | - Geert Jan Biessels
- Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Wiesje Maria van der Flier
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
- Department of Epidemiology, Amsterdam University Medical Center (Amsterdam UMC), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Frank Johannes Wolters
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine and Alzheimer Center, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - on behalf of the Heart-Brain Connection Consortium
- Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Internal Medicine, Geriatrics Section, Amsterdam Cardiovascular Science, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
- Department of Neurology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
- Department of Clinical Chemistry, Neurochemistry Laboratory, Amsterdam Neuroscience, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Amsterdam University Medical Center (Amsterdam UMC), Amsterdam, The Netherlands
- Department of Epidemiology, Amsterdam University Medical Center (Amsterdam UMC), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine and Alzheimer Center, Erasmus University Medical Center, Rotterdam, The Netherlands
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Sible IJ, Nation DA. 24-Hour Blood Pressure Variability Via Ambulatory Monitoring and Risk for Probable Dementia in the SPRINT Trial. J Prev Alzheimers Dis 2024; 11:684-692. [PMID: 38706284 PMCID: PMC11060998 DOI: 10.14283/jpad.2024.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/17/2023] [Indexed: 05/07/2024]
Abstract
BACKGROUND Blood pressure variability is an emerging risk factor for dementia, independent and oftentimes beyond mean blood pressure levels. Recent evidence from interventional cohorts with rigorously controlled mean blood pressure levels suggest blood pressure variability over months to years remains a risk for dementia, but no prior studies have investigated relationships with blood pressure variability over shorter time periods. OBJECTIVES To investigate the potential effect of ambulatory blood pressure variability on the rate of cognitive outcomes under intensive vs standard blood pressure lowering. DESIGN Post hoc analysis of the randomized, controlled, open-label Systolic Blood Pressure Intervention Trial clinical trial. SETTING Multisite Systolic Blood Pressure Intervention Trial. PARTICIPANTS 793 participants at increased risk for cardiovascular disease and without history of dementia at study randomization. INTERVENTION Standard (<140 mmHg systolic blood pressure target) vs intensive (<120 mmHg systolic blood pressure target) lowering of mean blood pressure. MEASUREMENTS 24-hour ambulatory blood pressure monitoring 27 months after treatment randomization (standard vs intensive) and follow-up cognitive testing. Intraindividual blood pressure variability was calculated as the average real variability over 24-hour, daytime, and nighttime periods. Participants were categorized into 3 adjudicated clinical outcomes: no cognitive impairment, mild cognitive impairment, probable dementia. Cox proportional hazards models examined the potential effect of ambulatory blood pressure variability on the rate of cognitive outcomes under intensive vs standard blood pressure lowering. Associations with mean blood pressure were also explored. RESULTS Higher systolic 24-hour blood pressure variability was associated with increased risk for probable dementia in the standard group (adjusted hazard ratio [HR]: 2.56 [95% CI 1.16, 5.62], p = 0.019) but not in the intensive group (HR: 0.54 [95% CI 0.24, 1.23], p = 0.141). Similar findings were observed with daytime systolic blood pressure variability but not nighttime blood pressure variability. Mean blood pressure was not associated with cognitive outcomes. CONCLUSIONS Higher systolic 24-hour and daytime blood pressure variability via ambulatory monitoring is associated with risk for dementia under standard blood pressure treatment. Findings support prior evidence that blood pressure variability remains a risk for dementia despite strict control of mean blood pressure levels.
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Affiliation(s)
- I J Sible
- Daniel A. Nation, Ph.D., Associate Professor, University of Southern California, Leonard Davis School of Gerontology, 3715 McClintock Ave, Los Angeles, CA 90089,
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Kim H, Alvin Ang TF, Thomas RJ, Lyons MJ, Au R. Long-term blood pressure patterns in midlife and dementia in later life: Findings from the Framingham Heart Study. Alzheimers Dement 2023; 19:4357-4366. [PMID: 37394941 PMCID: PMC10597747 DOI: 10.1002/alz.13356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 07/04/2023]
Abstract
INTRODUCTION Long-term blood pressure (BP) measures, such as visit-to-visit BP variability (BPV) and cumulative BP, are strong indicators of cardiovascular risks. This study modeled up to 20 years of BP patterns representative of midlife by using BPV and cumulative BP, then examined their associations with development of dementia in later life. METHODS For 3201 individuals from the Framingham Heart Study, multivariate logistic regression analyses were performed to examine the association between long-term BP patterns during midlife and the development of dementia (ages ≥ 65). RESULTS After adjusting for covariates, every quartile increase in midlife cumulative BP was associated with a sequential increase in the risk of developing dementia (e.g., highest quartile of cumulative systolic blood pressure had approximately 2.5-fold increased risk of all-cause dementia). BPV was not significantly associated with dementia. DISCUSSION Findings suggest that cumulative BP over the course of midlife predicts risk of dementia in later life. HIGHLIGHTS Long-term blood pressure (BP) patterns are strong indicators of vascular risks. Cumulative BP and BP variability (BPV) were used to reflect BP patterns across midlife. High cumulative BP in midlife is associated with increased dementia risk. Visit-to-visit BPV was not associated with the onset of dementia.
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Affiliation(s)
- Hyun Kim
- Dept. of Psychological & Brain Sciences, Boston University, 900 Commonwealth Ave # 2, Boston, MA 02215, USA
- Framingham Heart Study, Boston University School of Medicine, 72 E. Concord St Housman (R), Boston MA 02118
| | - Ting Fang Alvin Ang
- Framingham Heart Study, Boston University School of Medicine, 72 E. Concord St Housman (R), Boston MA 02118
- Department of Anatomy and Neurobiology, Boston University School of Medicine, 72 E. Concord St Housman (R), Boston MA 02118
| | - Robert J. Thomas
- Department of Medicine, Division of Pulmonary, Critical Care & Sleep, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue Shapiro 7 Boston, MA 02215
| | - Michael J. Lyons
- Dept. of Psychological & Brain Sciences, Boston University, 900 Commonwealth Ave # 2, Boston, MA 02215, USA
| | - Rhoda Au
- Framingham Heart Study, Boston University School of Medicine, 72 E. Concord St Housman (R), Boston MA 02118
- Department of Anatomy and Neurobiology, Boston University School of Medicine, 72 E. Concord St Housman (R), Boston MA 02118
- Dept. of Neurology, Medicine and Alzheimer’s Disease Research Center, Boston University School of Medicine, 72 E. Concord St, Boston MA 02118
- Dept. of Epidemiology, Boston University School of Public Health, 715 Albany St.Boston, MA 02118
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Sible IJ, Yoo HJ, Min J, Nashiro K, Chang C, Nation DA, Mather M. Short-term blood pressure variability is inversely related to regional amplitude of low frequency fluctuations in older and younger adults. AGING BRAIN 2023; 4:100085. [PMID: 37485296 PMCID: PMC10362312 DOI: 10.1016/j.nbas.2023.100085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/25/2023] Open
Abstract
Blood pressure variability (BPV), independent of mean blood pressure levels, is associated with cerebrovascular disease burden on MRI and postmortem evaluation. However, less is known about relationships with markers of cerebrovascular dysfunction, such as diminished spontaneous brain activity as measured by the amplitude of low frequency fluctuations (ALFF), especially in brain regions with vascular and neuronal vulnerability in aging. We investigated the relationship between short-term BPV and concurrent regional ALFF from resting state fMRI in a sample of community-dwelling older adults (n = 44) and healthy younger adults (n = 49). In older adults, elevated systolic BPV was associated with lower ALFF in widespread medial temporal regions and the anterior cingulate cortex. Higher systolic BPV in younger adults was also related to lower ALFF in the medial temporal lobe, albeit in fewer subregions, and the amygdala. There were no significant associations between systolic BPV and ALFF across the right/left whole brain or in the insular cortex in either group. Findings suggest a possible regional vulnerability to cerebrovascular dysfunction and short-term fluctuations in blood pressure. BPV may be an understudied risk factor for cerebrovascular changes in aging.
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Affiliation(s)
- Isabel J. Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Hyun Joo Yoo
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Jungwon Min
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Kaoru Nashiro
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Catie Chang
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Daniel A. Nation
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Mara Mather
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
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20
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Mahinrad S, Bennett DA, Sorond FA, Gorelick PB. Blood pressure variability, dementia, and role of antihypertensive medications in older adults. Alzheimers Dement 2023; 19:2966-2974. [PMID: 36656086 PMCID: PMC10354219 DOI: 10.1002/alz.12935] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
INTRODUCTION We assessed the association between visit-to-visit blood pressure variability (BPV) up to 12 years and subsequent dementia risk, and tested the modifying effect of antihypertensive medications. METHODS We studied 2234 participants from two community-based cohorts of older adults with normal cognition or mild cognitive impairment. Participants were followed through annual assessments for up to 27 years. Visit-to-visit BPV was quantified over 3, 6, 9, and 12 years, respectively. RESULTS Higher systolic BPV (SBPV) during 3, 6, 9, and 12 years was associated with a subsequent increased risk of dementia, with hazard ratios ranging from 1.02 (95% confidence interval [CI]: 1.01-1.04) to 1.10 (95% CI: 1.05-1.16). The association between SBPV and dementia risk was stronger among participants not taking calcium channel blockers (p-for interaction < 0.05). DISCUSSION Among older adults, long-term exposure to higher visit-to-visit SBPV is associated with an increased risk of dementia later in life, and calcium channel blockers may modify this association. HIGHLIGHTS Among adults aged >65, higher systolic blood pressure variability spanning 3-12 years is associated with an increased risk of dementia later in life. Single blood pressure measurement or mean blood pressure levels does not seem to associate with dementia risk among older adults. The association between systolic blood pressure variability and dementia risk is stronger among those not taking calcium channel blocker medications.
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Affiliation(s)
- Simin Mahinrad
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - David A. Bennett
- Department of Neurological Sciences and Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Farzaneh A. Sorond
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Philip B. Gorelick
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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21
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Elahi FM, Alladi S, Black SE, Claassen JAHR, DeCarli C, Hughes TM, Moonen J, Pajewski NM, Price BR, Satizabal C, Shaaban CE, Silva NCBS, Snyder HM, Sveikata L, Williamson JD, Wolters FJ, Hainsworth AH. Clinical trials in vascular cognitive impairment following SPRINT-MIND: An international perspective. Cell Rep Med 2023; 4:101089. [PMID: 37343515 PMCID: PMC10314118 DOI: 10.1016/j.xcrm.2023.101089] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/19/2022] [Accepted: 05/24/2023] [Indexed: 06/23/2023]
Abstract
A large interventional trial, the Systolic Blood Pressure Intervention Trial sub-study termed Memory and Cognition in Decreased Hypertension (SPRINT-MIND), found reduced risk of cognitive impairment in older adults with intensive, relative to standard, blood-pressure-lowering targets (systolic BP < 120 vs. <140 mm Hg). In this perspective, we discuss key questions and make recommendations for clinical practice and for clinical trials, following SPRINT-MIND. Future trials should embody cognitive endpoints appropriate to the participant group, ideally with adaptive designs that ensure robust answers for cognitive and cardiovascular endpoints. Reliable data from diverse populations, including the oldest-old (age > 80 years), will maximize external validity and global implementation of trial findings. New biomarkers will improve phenotyping to stratify patients to optimal treatments. Currently no antihypertensive drug class stands out for dementia risk reduction. Multi-domain interventions, incorporating lifestyle change (exercise, diet) alongside medications, may maximize global impact. Given the low cost and wide availability of antihypertensive drugs, intensive BP reduction may be a cost-effective means to reduce dementia risk in diverse, aging populations worldwide.
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Affiliation(s)
- Fanny M Elahi
- Friedman Brain Institute, Ronald M. Loeb Center for Alzheimer's Disease, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Suvarna Alladi
- National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka 560030, India
| | - Sandra E Black
- Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
| | - Jurgen A H R Claassen
- Department of Geriatric Medicine and Donders Institute for Medical Neuroscience, Radboud University Medical Center, 6525 EN Nijmegen, the Netherlands
| | - Charles DeCarli
- Department of Neurology and Center for Neuroscience, University of California at Davis, Sacramento, CA 95817, USA
| | - Timothy M Hughes
- Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27101, USA
| | - Justine Moonen
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, the Netherlands
| | - Nicholas M Pajewski
- Department of Biostatistics and Data Science, Wake Forest University School of Medicine, Winston-Salem, NC 27154, USA
| | | | - Claudia Satizabal
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, Department of Population Health Sciences, UT Health San Antonio, San Antonio, TX 78229, USA
| | - C Elizabeth Shaaban
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Nárlon C B S Silva
- Djavad Mowafaghian Centre for Brain Health, Department of Physical Therapy, Faculty of Medicine, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Heather M Snyder
- Alzheimer's Association, 225 N Michigan Avenue, Chicago, IL 60603, USA
| | - Lukas Sveikata
- J.P. Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospitals, 1205 Genève, Switzerland; Institute of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jeff D Williamson
- Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27101, USA; Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27154, USA
| | - Frank J Wolters
- Departments of Epidemiology and Radiology & Nuclear Medicine, Erasmus MC, University Medical Centre Rotterdam, 3015 GD Rotterdam, the Netherlands
| | - Atticus H Hainsworth
- Neurology, St George's University Hospitals NHS Foundation Trust, London SW17 0QT, UK; Molecular and Clinical Sciences Research Institute, St George's University of London, London SW17 0RE, UK.
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22
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Sible IJ, Nation DA. Blood Pressure Variability and Cerebral Perfusion Decline: A Post Hoc Analysis of the SPRINT MIND Trial. J Am Heart Assoc 2023; 12:e029797. [PMID: 37301768 PMCID: PMC10356024 DOI: 10.1161/jaha.123.029797] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/17/2023] [Indexed: 06/12/2023]
Abstract
Background Blood pressure variability (BPV) is predictive of cerebrovascular disease and dementia, possibly though cerebral hypoperfusion. Higher BPV is associated with cerebral blood flow (CBF) decline in observational cohorts, but relationships in samples with strictly controlled blood pressure remain understudied. We investigated whether BPV relates to change in CBF in the context of intensive versus standard antihypertensive treatment. Methods and Results In this post hoc analysis of the SPRINT MIND (Systolic Blood Pressure Intervention Trial-Memory and Cognition in Decreased Hypertension) trial, 289 participants (mean, 67.6 [7.6 SD] years, 38.8% women) underwent 4 blood pressure measurements over a 9-month period after treatment randomization (intensive versus standard) and pseudo-continuous arterial spin labeling magnetic resonance imaging at baseline and ≈4-year follow-up. BPV was calculated as tertiles of variability independent of mean. CBF was determined for whole brain, gray matter, white matter, hippocampus, parahippocampal gyrus, and entorhinal cortex. Linear mixed models examined relationships between BPV and change in CBF under intensive versus standard antihypertensive treatment. Higher BPV in the standard treatment group was associated with CBF decline in all regions (ß comparing the first versus third tertiles of BPV in whole brain: -0.09 [95% CI, -0.17 to -0.01]; P=0.03), especially in medial temporal regions. In the intensive treatment group, elevated BPV was related to CBF decline only in the hippocampus (ß, -0.10 [95% CI, -0.18, -0.01]; P=0.03). Conclusions Elevated BPV is associated with CBF decline, especially under standard blood pressure-lowering strategies. Relationships were particularly robust in medial temporal regions, consistent with prior work using observational cohorts. Findings highlight the possibility that BPV remains a risk for CBF decline even in individuals with strictly controlled mean blood pressure levels. Registration URL: http://clinicaltrials.gov. Identifier: NCT01206062.
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Affiliation(s)
- Isabel J. Sible
- Department of PsychologyUniversity of Southern CaliforniaLos AngelesCA
| | - Daniel A. Nation
- Institute for Memory Impairments and Neurological DisordersUniversity of California IrvineIrvineCA
- Department of Psychological ScienceUniversity of California IrvineIrvineCA
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23
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Sun F. The impact of blood pressure variability on cognition: current limitations and new advances. J Hypertens 2023; 41:888-905. [PMID: 37016905 PMCID: PMC10158606 DOI: 10.1097/hjh.0000000000003422] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/18/2023] [Accepted: 02/23/2023] [Indexed: 04/06/2023]
Abstract
Dementia is the most common neurodegenerative disease in the aging population. Emerging evidence indicates that blood pressure (BP) variability is correlated with cognitive impairment and dementia independent of mean BP levels. The state-of-the-art review summarizes the latest evidence regarding the impact of BP variability on cognition in cognitively intact populations, patients with mild cognitive impairment, and different dementia types, focusing on the important confounding factors and new advances. This review also summarizes the potential mechanisms underlying the relationship between BP variability and cognitive impairment, and dementia, briefly discussing sex differences in the relationship. At last, current limitations and future perspectives are discussed to optimize BP management in preventing cognitive impairment and dementia.
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Affiliation(s)
- Fen Sun
- Department of Anatomy, College of Basic Medicine
- Key Laboratory of Organ Development and Regeneration of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
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24
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Parati G, Bilo G, Kollias A, Pengo M, Ochoa JE, Castiglioni P, Stergiou GS, Mancia G, Asayama K, Asmar R, Avolio A, Caiani EG, De La Sierra A, Dolan E, Grillo A, Guzik P, Hoshide S, Head GA, Imai Y, Juhanoja E, Kahan T, Kario K, Kotsis V, Kreutz R, Kyriakoulis KG, Li Y, Manios E, Mihailidou AS, Modesti PA, Omboni S, Palatini P, Persu A, Protogerou AD, Saladini F, Salvi P, Sarafidis P, Torlasco C, Veglio F, Vlachopoulos C, Zhang Y. Blood pressure variability: methodological aspects, clinical relevance and practical indications for management - a European Society of Hypertension position paper ∗. J Hypertens 2023; 41:527-544. [PMID: 36723481 DOI: 10.1097/hjh.0000000000003363] [Citation(s) in RCA: 45] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Blood pressure is not a static parameter, but rather undergoes continuous fluctuations over time, as a result of the interaction between environmental and behavioural factors on one side and intrinsic cardiovascular regulatory mechanisms on the other side. Increased blood pressure variability (BPV) may indicate an impaired cardiovascular regulation and may represent a cardiovascular risk factor itself, having been associated with increased all-cause and cardiovascular mortality, stroke, coronary artery disease, heart failure, end-stage renal disease, and dementia incidence. Nonetheless, BPV was considered only a research issue in previous hypertension management guidelines, because the available evidence on its clinical relevance presents several gaps and is based on heterogeneous studies with limited standardization of methods for BPV assessment. The aim of this position paper, with contributions from members of the European Society of Hypertension Working Group on Blood Pressure Monitoring and Cardiovascular Variability and from a number of international experts, is to summarize the available evidence in the field of BPV assessment methodology and clinical applications and to provide practical indications on how to measure and interpret BPV in research and clinical settings based on currently available data. Pending issues and clinical and methodological recommendations supported by available evidence are also reported. The information provided by this paper should contribute to a better standardization of future studies on BPV, but should also provide clinicians with some indications on how BPV can be managed based on currently available data.
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Affiliation(s)
- Gianfranco Parati
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Grzegorz Bilo
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Anastasios Kollias
- Hypertension Center STRIDE-7, National and Kapodistrian University of Athens, School of Medicine, Third Department of Medicine, Sotiria Hospital, Athens, Greece
| | - Martino Pengo
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Juan Eugenio Ochoa
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
| | - Paolo Castiglioni
- IRCCS Fondazione Don Carlo Gnocchi, Milan
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, Varese
| | - George S Stergiou
- Hypertension Center STRIDE-7, National and Kapodistrian University of Athens, School of Medicine, Third Department of Medicine, Sotiria Hospital, Athens, Greece
| | | | - Kei Asayama
- Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan
- Department of Cardiovascular Sciences, University of Leuven, and Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven, Belgium
- Tohoku Institute for the Management of Blood Pressure, Sendai, Japan
| | - Roland Asmar
- Foundation-Medical Research Institutes, Geneva, Switzerland
| | - Alberto Avolio
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - Enrico G Caiani
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
- Department of Electronics, Information, and Bioengineering, Politecnico di Milano, Italy
| | - Alejandro De La Sierra
- Hypertension Unit, Department of Internal Medicine, Hospital Mútua Terrassa, University of Barcelona, Barcelona, Spain
| | | | - Andrea Grillo
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Italy
| | - Przemysław Guzik
- Department of Cardiology -Intensive Therapy, University School of Medicine in Poznan, Poznan, Poland
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Geoffrey A Head
- Baker Heart and Diabetes Institute, Melbourne Victoria Australia
| | - Yutaka Imai
- Tohoku Institute for the Management of Blood Pressure, Sendai, Japan
| | - Eeva Juhanoja
- Chronic Disease Prevention Unit, National Institute for Health and Welfare, Turku
- Department of Oncology; Division of Medicine, Turku University Hospital, University of Turku, Turku, Finland
| | - Thomas Kahan
- Karolinska Institute, Department of Clinical Sciences, Division of Cardiovascular Medicine, Department of Cardiology, Danderyd University Hospital Corporation, Stockholm, Sweden
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | | | | | - Konstantinos G Kyriakoulis
- Hypertension Center STRIDE-7, National and Kapodistrian University of Athens, School of Medicine, Third Department of Medicine, Sotiria Hospital, Athens, Greece
| | - Yan Li
- Department of Cardiovascular Medicine, Shanghai Key Laboratory of Hypertension and Medical Genomics, National Research Centre for Translational Medicine
- Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Efstathios Manios
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, Alexandra Hospital Athens, Greece
| | - Anastasia S Mihailidou
- Department of Cardiology and Kolling Institute, Royal North Shore Hospital, St Leonards; Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | | | - Stefano Omboni
- Clinical Research Unit, Italian Institute of Telemedicine, Varese, Italy
- Department of Cardiology, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Paolo Palatini
- Department of Medicine. University of Padova, Padua, Italy
| | - Alexandre Persu
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires Saint-Luc and Pole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Athanasios D Protogerou
- Cardiovascular Prevention and Research Unit, Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital, Athens, Greece
| | - Francesca Saladini
- Department of Medicine. University of Padova, Padua, Italy
- Cardiology Unit, Cittadella Town Hospital, Padova, Italy
| | - Paolo Salvi
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
| | - Pantelis Sarafidis
- Department of Nephrology, Hippokration Hospital, Aristotle University of Thessaloniki, Greece
| | - Camilla Torlasco
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular Neural and Metabolic Sciences, Milan
| | - Franco Veglio
- Internal Medicine Division and Hypertension Unit, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Charalambos Vlachopoulos
- Hypertension and Cardiometabolic Syndrome Unit, 1 Department of Cardiology, Medical School, National & Kapodistrian University of Athens, Hippokration Hospital, Athens, Greece
| | - Yuqing Zhang
- Department of Cardiology, Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Sible IJ, Nation DA. Blood Pressure Variability and Cognitive Decline: A Post Hoc Analysis of the SPRINT MIND Trial. Am J Hypertens 2023; 36:168-175. [PMID: 36448621 PMCID: PMC10208742 DOI: 10.1093/ajh/hpac128] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/06/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Blood pressure (BP) variability (BPV) is an emerging risk factor for cognitive impairment and dementia, but relationships with cognition in the context of antihypertensive strategies remain unclear. We examined whether visit-to-visit BPV relates to cognitive change based on antihypertensive treatment type. METHODS In this post hoc analysis of the SPRINT MIND trial, 2,348 participants underwent 4 BP measurements over a 9-month period after treatment randomization (standard vs. intensive BP lowering) and ≥ 1 neuropsychological evaluation thereafter. BPV was calculated as tertiles of BP SD. Participants underwent cognitive testing at baseline and every 2 years during the planned 4-year follow-up. Cognitive composite scores were calculated for global cognition, memory, language, executive function, and processing speed. Linear mixed models investigated relationships between BPV, antihypertensive treatment group, and time on cognitive composite scores. RESULTS Elevated BPV was associated with the fastest decline in processing speed (ß = -.07 [95% CI -.12, -.01]; P = 0.02) and executive function (ß = -.08 [95% CI -.16, -.006]; P = 0.03) in the standard treatment group only. BPV was not related to cognitive change in the intensive treatment group. Mean/minimum/maximum BP was not associated with cognitive composite scores over time in either antihypertensive treatment group. CONCLUSIONS Elevated BPV remains a risk for cognitive decline despite strictly controlled BP levels, in the standard treatment group. Specific declines were observed in processing speed and executive function, domains often impacted by cerebrovascular disease and may underpin risk for dementia and cerebrovascular disease associated with BPV. Clinical trial information: ClinicalTrials.gov; NCT01206062.
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Affiliation(s)
- Isabel J Sible
- Department of Psychology, University of Southern California, Los Angeles, California 90007, USA
| | - Daniel A Nation
- Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, California 92697, USA
- Department of Psychological Science, University of California Irvine, Irvine, California 92697, USA
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26
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Tsao CW, Aday AW, Almarzooq ZI, Anderson CAM, Arora P, Avery CL, Baker-Smith CM, Beaton AZ, Boehme AK, Buxton AE, Commodore-Mensah Y, Elkind MSV, Evenson KR, Eze-Nliam C, Fugar S, Generoso G, Heard DG, Hiremath S, Ho JE, Kalani R, Kazi DS, Ko D, Levine DA, Liu J, Ma J, Magnani JW, Michos ED, Mussolino ME, Navaneethan SD, Parikh NI, Poudel R, Rezk-Hanna M, Roth GA, Shah NS, St-Onge MP, Thacker EL, Virani SS, Voeks JH, Wang NY, Wong ND, Wong SS, Yaffe K, Martin SS. Heart Disease and Stroke Statistics-2023 Update: A Report From the American Heart Association. Circulation 2023; 147:e93-e621. [PMID: 36695182 DOI: 10.1161/cir.0000000000001123] [Citation(s) in RCA: 1305] [Impact Index Per Article: 1305.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND The American Heart Association, in conjunction with the National Institutes of Health, annually reports the most up-to-date statistics related to heart disease, stroke, and cardiovascular risk factors, including core health behaviors (smoking, physical activity, diet, and weight) and health factors (cholesterol, blood pressure, and glucose control) that contribute to cardiovascular health. The Statistical Update presents the latest data on a range of major clinical heart and circulatory disease conditions (including stroke, congenital heart disease, rhythm disorders, subclinical atherosclerosis, coronary heart disease, heart failure, valvular disease, venous disease, and peripheral artery disease) and the associated outcomes (including quality of care, procedures, and economic costs). METHODS The American Heart Association, through its Epidemiology and Prevention Statistics Committee, continuously monitors and evaluates sources of data on heart disease and stroke in the United States to provide the most current information available in the annual Statistical Update with review of published literature through the year before writing. The 2023 Statistical Update is the product of a full year's worth of effort in 2022 by dedicated volunteer clinicians and scientists, committed government professionals, and American Heart Association staff members. The American Heart Association strives to further understand and help heal health problems inflicted by structural racism, a public health crisis that can significantly damage physical and mental health and perpetuate disparities in access to health care, education, income, housing, and several other factors vital to healthy lives. This year's edition includes additional COVID-19 (coronavirus disease 2019) publications, as well as data on the monitoring and benefits of cardiovascular health in the population, with an enhanced focus on health equity across several key domains. RESULTS Each of the chapters in the Statistical Update focuses on a different topic related to heart disease and stroke statistics. CONCLUSIONS The Statistical Update represents a critical resource for the lay public, policymakers, media professionals, clinicians, health care administrators, researchers, health advocates, and others seeking the best available data on these factors and conditions.
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27
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Sible IJ, Nation DA. Visit-to-Visit Blood Pressure Variability and Cognitive Decline in Apolipoprotein ɛ4 Carriers versus Apolipoprotein ɛ3 Homozygotes. J Alzheimers Dis 2023; 93:533-543. [PMID: 37066910 PMCID: PMC10852980 DOI: 10.3233/jad-221103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
BACKGROUND Blood pressure variability (BPV) is associated with cognitive decline and Alzheimer's disease (AD), but relationships with AD risk gene apolipoprotein (APOE) ɛ4 remain understudied. OBJECTIVE Examined the longitudinal relationship between BPV and cognitive change in APOE ɛ4 carriers and APOE ɛ3 homozygotes. METHODS 1,194 Alzheimer's Disease Neuroimaging Initiative participants (554 APOE ɛ4 carriers) underwent 3-4 blood pressure measurements between study baseline and 12-month follow-up. Visit-to-visit BPV was calculated as variability independent of mean over these 12 months. Participants subsequently underwent ≥1 neuropsychological exam at 12-month follow-up or later (up to 156 months later). Composite scores for the domains of memory, language, executive function, and visuospatial abilities were determined. Linear mixed models examined the 3-way interaction of BPV×APOE ɛ4 carrier status x time predicting change in composite scores. RESULTS Higher systolic BPV predicted greater decline in memory (+1 SD increase of BPV: β= -0.001, p < 0.001) and language (β= -0.002, p < 0.0001) among APOE ɛ4 carriers, but not APOE ɛ3 homozygotes (memory: +1 SD increase of BPV: β= 0.0001, p = 0.57; language: β= 0.0001, p = 0.72). Systolic BPV was not significantly associated with change in executive function or visuospatial abilities in APOE ɛ4 carriers (ps = 0.08-0.16) or APOE ɛ3 homozygotes (ps = 0.48-0.12). CONCLUSION Cognitive decline associated with high BPV may be specifically accelerated among APOE ɛ4 carriers.
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Affiliation(s)
- Isabel J. Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90007, USA
| | - Daniel A. Nation
- Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA 92697, USA
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
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28
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Sible IJ, Jang JY, Dutt S, Yew B, Alitin JPM, Li Y, Blanken AE, Ho JK, Marshall AJ, Kapoor A, Shenasa F, Gaubert A, Nguyen A, Sturm VE, Mather M, Rodgers KE, Shao X, Wang DJ, Nation DA. Older Adults With Higher Blood Pressure Variability Exhibit Cerebrovascular Reactivity Deficits. Am J Hypertens 2023; 36:63-68. [PMID: 36149821 PMCID: PMC9793985 DOI: 10.1093/ajh/hpac108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Elevated blood pressure (BP) variability is predictive of increased risk for stroke, cerebrovascular disease, and other vascular brain injuries, independent of traditionally studied average BP levels. However, no studies to date have evaluated whether BP variability is related to diminished cerebrovascular reactivity, which may represent an early marker of cerebrovascular dysfunction presaging vascular brain injury. METHODS The present study investigated BP variability and cerebrovascular reactivity in a sample of 41 community-dwelling older adults (mean age 69.6 [SD 8.7] years) without a history of dementia or stroke. Short-term BP variability was determined from BP measurements collected continuously during a 5-minute resting period followed by cerebrovascular reactivity during 5-minute hypocapnia and hypercapnia challenge induced by visually guided breathing conditions. Cerebrovascular reactivity was quantified as percent change in cerebral perfusion by pseudo-continuous arterial spin labeling (pCASL)-MRI per unit change in end-tidal CO2. RESULTS Elevated systolic BP variability was related to lower whole brain cerebrovascular reactivity during hypocapnia (ß = -0.43 [95% CI -0.73, -0.12]; P = 0.008; adjusted R2 =.11) and hypercapnia (ß = -0.42 [95% CI -0.77, -0.06]; P = 0.02; adjusted R2 = 0.19). CONCLUSIONS Findings add to prior work linking BP variability and cerebrovascular disease burden and suggest BP variability may also be related to prodromal markers of cerebrovascular dysfunction and disease, with potential therapeutic implications.
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Affiliation(s)
- Isabel J Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Jung Yun Jang
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Shubir Dutt
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Belinda Yew
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
- Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - John Paul M Alitin
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Yanrong Li
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Anna E Blanken
- San Francisco Veterans Affairs Health Care System, San Francisco, CA, 94121, USA
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Jean K Ho
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Anisa J Marshall
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Arunima Kapoor
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Fatemah Shenasa
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Aimée Gaubert
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Amy Nguyen
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Virginia E Sturm
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, 94158, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA, 94158, USA
- Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Mara Mather
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Kathleen E Rodgers
- Center for Innovation in Brain Science, Department of Pharmacology, The University of Arizona, Tucson, AZ, 85721, USA
| | - Xingfeng Shao
- Laboratory of Functional MRI Technology, Mark and Mary Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, CA, 90033, USA
| | - Danny J Wang
- Laboratory of Functional MRI Technology, Mark and Mary Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, CA, 90033, USA
| | - Daniel A Nation
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
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Bencivenga L, Strumia M, Rolland Y, Martinez L, Cestac P, Guyonnet S, Andrieu S, Parini A, Lucas A, Vellas B, De Souto Barreto P, Rouch L, Guyonnet S, Carrié I, Brigitte L, Faisant C, Lala F, Delrieu J, Villars H, Combrouze E, Badufle C, Zueras A, Andrieu S, Cantet C, Morin C, Van Kan GA, Dupuy C, Rolland Y, Caillaud C, Ousset PJ, Lala F, Willis S, Belleville S, Gilbert B, Fontaine F, Dartigues JF, Marcet I, Delva F, Foubert A, Cerda S, Marie-Noëlle-Cuffi, Costes C, Rouaud O, Manckoundia P, Quipourt V, Marilier S, Franon E, Bories L, Pader ML, Basset MF, Lapoujade B, Faure V, Tong MLY, Malick-Loiseau C, Cazaban-Campistron E, Desclaux F, Blatge C, Dantoine T, Laubarie-Mouret C, Saulnier I, Clément JP, Picat MA, Bernard-Bourzeix L, Willebois S, Désormais I, Cardinaud N, Bonnefoy M, Livet P, Rebaudet P, Gédéon C, Burdet C, Terracol F, Pesce A, Roth S, Chaillou S, Louchart S, Sudres K, Lebrun N, Barro-Belaygues N, Touchon J, Bennys K, Gabelle A, Romano A, Touati L, Marelli C, Pays C, Robert P, Le Duff F, Gervais C, Gonfrier S, Gasnier Y, Bordes S, Begorre D, Carpuat C, Khales K, Lefebvre JF, Idrissi SME, Skolil P, Salles JP, Dufouil C, Lehéricy S, Chupin M, Mangin JF, Bouhayia A, Allard M, Ricolfi F, Dubois D, Martel MPB, Cotton F, Bonafé A, Chanalet S, Hugon F, Bonneville F, Cognard C, Chollet F, Payoux P, Voisin T, Delrieu J, Peiffer S, Hitzel A, Allard M, Zanca M, Monteil J, Darcourt J, Molinier L, Derumeaux H, Costa N, Perret B, Vinel C, Caspar-Bauguil S, Olivier-Abbal P, Andrieu S, Cantet C, Coley N. Biomarkers of mitochondrial dysfunction and inflammaging in older adults and blood pressure variability. GeroScience 2022; 45:797-809. [PMID: 36454336 PMCID: PMC9886716 DOI: 10.1007/s11357-022-00697-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/20/2022] [Indexed: 12/02/2022] Open
Abstract
Most physiopathological mechanisms underlying blood pressure variability (BPV) are implicated in aging. Vascular aging is associated with chronic low-grade inflammation occurring in late life, known as "inflammaging" and the hallmark "mitochondrial dysfunction" due to age-related stress. We aimed to determine whether plasma levels of the pleiotropic stress-related mitokine growth/differentiation factor 15 (GDF-15) and two inflammatory biomarkers, interleukin 6 (IL-6) and tumor necrosis factor receptor 1 (TNFR-1), are associated with visit-to-visit BPV in a population of community-dwelling older adults. The study population consisted of 1096 community-dwelling participants [median age 75 (72-78) years; 699 females, 63.7%] aged ≥ 70 years from the MAPT study. Plasma blood sample was collected 12 months after enrolment and BP was assessed up to seven times over a 4-year period. Systolic (SBPV) and diastolic BPV (DBPV) were determined through several indicators taking into account BP change over time, the order of measurements and formulas independent of mean BP levels. Higher values of GDF-15 were significantly associated with increased SBPV (all indicators) after adjustment for relevant covariates [adjusted 1-SD increase in GDF-15: β (SE) = 0.07 (0.04), p < 0.044, for coefficient of variation%]. GDF-15 levels were not associated with DBPV. No significant associations were found between IL-6 and BPV, whereas TNFR1 was only partially related to DBPV. Unlike inflammation biomarkers, higher GDF-15 levels were associated with greater SBPV. Our findings support the age-related process of mitochondrial dysfunction underlying BP instability, suggesting that BPV might be a potential marker of aging.
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Affiliation(s)
- Leonardo Bencivenga
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Via Sergio Pansini 5, Napoli, Italy. .,Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France.
| | - Mathilde Strumia
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
| | - Yves Rolland
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
| | | | - Philippe Cestac
- Department of Pharmacy, Toulouse University, Toulouse, France
| | - Sophie Guyonnet
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
| | | | - Angelo Parini
- Institut Des Maladies Métaboliques Et Cardiovasculaires (I2MC), Toulouse, France
| | - Alexandre Lucas
- Institut Des Maladies Métaboliques Et Cardiovasculaires (I2MC), Toulouse, France
| | - Bruno Vellas
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
| | - Philipe De Souto Barreto
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
| | - Laure Rouch
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France ,UMR INSERM 1295, Université Toulouse III, Toulouse, France
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Blood pressure variability and plasma Alzheimer's disease biomarkers in older adults. Sci Rep 2022; 12:17197. [PMID: 36229634 PMCID: PMC9561652 DOI: 10.1038/s41598-022-20627-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 09/15/2022] [Indexed: 01/06/2023] Open
Abstract
Blood pressure variability is an emerging risk factor for Alzheimer's disease in older adults, independent of average blood pressure levels. Growing evidence suggests increased blood pressure variability is linked to Alzheimer's disease pathophysiology indexed by cerebrospinal fluid and positron emission tomography markers, but relationships with plasma Alzheimer's disease markers have not been investigated. In this cross-sectional study of 54 community-dwelling older adults (aged 55-88, mean age 69.9 [8.2 SD]), elevated blood pressure variability over 5 min was associated with lower levels of plasma Aβ1-42 (standardized ß = - 0.36 [95% CI - 0.61, - 0.12]; p = 0.005; adjusted R2 = 0.28) and Aβ1-42: Aβ1-40 ratio (ß = - 0.49 [95% CI - 0.71, - 0.22]; p < 0.001; adjusted R2 = 0.28), and higher levels of total tau (ß = 0.27 [95% CI 0.01, 0.54]; p = 0.04; adjusted R2 = 0.19) and Ptau181:Aβ1-42 ratio (ß = 0.26 [95% CI 0.02, 0.51]; p = 0.04; adjusted R2 = 0.22). Findings suggest higher blood pressure variability is linked to plasma biomarkers of increased Alzheimer's disease pathophysiology.
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Xu L, Yang Y, Cui D. Association between blood pressure control status, visit-to-visit blood pressure variability, and cognitive function in elderly Chinese: A nationwide study. Front Public Health 2022; 10:877192. [PMID: 35991063 PMCID: PMC9386068 DOI: 10.3389/fpubh.2022.877192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
Background Cognitive function is a concern among the elderly, which is related to the quality of life, life expectancy, and economic burdens. The relationship between blood pressure (BP) control status, visit-to-visit BP variability, and cognitive function remains controversial. Methods We aimed to explore the association between BP control status at baseline, visit-to-visit BP variability, and cognitive function. This study included 3,511 elderlies in the China Health and Retirement Longitudinal Study, covering four waves for 7-year follow-up (baseline 2011, 2013, 2015, and 2018). BP was measured in Wave 2011, 2013, and 2015. Cognitive function was measured by Mini-Mental State Exam in Wave 2018. Participants were divided into two groups: mid-old group for reflecting midlife BP and cognition (45–59 years at baseline but aged 60 or over in Wave 2018), and old-old group for reflecting late-life BP and cognition (aged 60 or over at baseline). We use univariate analysis and general linear model to analyze. Results Late-life BP showed stronger associations with cognitive function than midlife BP. As to late-life BP control status, controlled hypertension group get higher cognitive score than uncontrolled hypertension group in language (adjusted β = −0.34, 95%CI −0.68 to 0.00), and untreated hypertension group in orientation (adjusted β = −0.41, 95%CI −0.72 to −0.11), language (adjusted β = −0.35, 95%CI −0.67 to −0.04), and total (adjusted β = −0.99, 95%CI −1.85 to −0.12). Regarding visit-to-visit BP variability, midlife visit-to-visit systolic blood pressure (SBP) variability was associated with language (adjusted β = −3.70, 95% CI −5.83 to −1.57), while late-life visit-to-visit SBP variability was associated with orientation (adjusted β = −2.99, 95% CI −4.84 to −1.14), recall (adjusted β = −1.69, 95% CI −2.89 to −0.48), language (adjusted β = −2.26, 95% CI −4.13 to −0.38), and total (adjusted β = −9.50, 95% CI −14.71 to −4.28); Midlife diastolic blood pressure (DBP) variability and pulse pressure (PP) variability showed a significant relationship with language (adjusted β = 3.25, 95% CI −1.31 to −5.19) and calculation (adjusted β = −0.26, 95% CI −0.47 to −0.04), respectively. No significant correlation was found between midlife BP control status, late-life visit-to-visit DBP variability, late-life visit-to-visit PP variability, and cognitive score. There was no significant correlation between BP and memory. Conclusions BP control status and visit-to-visit BP variability were significantly related to cognitive function among the Chinese elderly. Receiving effective late-life antihypertensive treatment and keeping SBP stable might contribute to prevent the development of cognitive impairment and dementia, especially for orientation and language function.
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Affiliation(s)
- Luxinyi Xu
- School of Public Health, Wuhan University, Wuhan, China
- Global Health Institute, Wuhan University, Wuhan, China
| | - Ying Yang
- School of Public Health, Wuhan University, Wuhan, China
- Global Health Institute, Wuhan University, Wuhan, China
| | - Dan Cui
- School of Public Health, Wuhan University, Wuhan, China
- Global Health Institute, Wuhan University, Wuhan, China
- *Correspondence: Dan Cui
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Bencivenga L, De Souto Barreto P, Rolland Y, Hanon O, Vidal JS, Cestac P, Vellas B, Rouch L. Blood pressure variability: a potential marker of aging. Ageing Res Rev 2022; 80:101677. [PMID: 35738476 DOI: 10.1016/j.arr.2022.101677] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 06/03/2022] [Accepted: 06/17/2022] [Indexed: 11/28/2022]
Abstract
Aging is characterized by alterations in neuro-cardiovascular regulatory mechanisms, leading to impaired physiological variability patterns. Repeated evidence has shown that increased Blood Pressure Variability (BPV) is associated with organ damage and exerts independent predictive value on several health outcomes: cardiovascular events, neurocognitive impairment, metabolic disorders and typical geriatric syndromes such as sarcopenia and frailty. Accordingly, it may constitute the epiphenomenon of the alterations in homeostatic mechanisms, typical of late life. Aging and altered BPV share the same molecular mechanisms, in particular the clinical state of subclinical inflammation has been widely ascertained in advanced age and it is also related to BP dysregulation through altered endothelial function and increased production of ROS. Arterial stiffness and autonomic dysfunction have been associated to impairment in BPV and also represent key features in elderly patients. Furthermore, accumulating evidence in the field of Geroscience has reported that several molecular changes described in cardiovascular aging and altered BPV also relate with the majority of the 9 identified hallmarks of aging. Indeed, BPV may be linked to genomic instability, epigenetic modification and mitochondrial oxidative damage, which represent milestones of aging process. The aim of the present paper is to analyse the interplay between BPV and the pathophysiology of the ageing process, in order to stimulate discussion about the potential role of BPV as a new marker of aging.
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Affiliation(s)
- Leonardo Bencivenga
- Department of Advanced Biomedical Sciences, University of Naples "Federico II"; Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France.
| | - Philipe De Souto Barreto
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France; UMR INSERM 1295, Université Toulouse III, France
| | - Yves Rolland
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France; UMR INSERM 1295, Université Toulouse III, France
| | - Olivier Hanon
- EA4468 Université de Paris, France; Service de gériatrie, Hôpital Broca, AP-HP, Hôpitaux Universitaires Paris Centre, France
| | - Jean-Sébastien Vidal
- EA4468 Université de Paris, France; Service de gériatrie, Hôpital Broca, AP-HP, Hôpitaux Universitaires Paris Centre, France
| | - Philippe Cestac
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France; UMR INSERM 1295, Université Toulouse III, France
| | - Bruno Vellas
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France; UMR INSERM 1295, Université Toulouse III, France
| | - Laure Rouch
- Gérontopôle de Toulouse, Institut du Vieillissement, CHU de Toulouse, France; UMR INSERM 1295, Université Toulouse III, France
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Sible IJ, Nation DA. Visit-to-Visit Blood Pressure Variability and CSF Alzheimer Disease Biomarkers in Cognitively Unimpaired and Mildly Impaired Older Adults. Neurology 2022; 98:e2446-e2453. [PMID: 35418462 PMCID: PMC9231834 DOI: 10.1212/wnl.0000000000200302] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/16/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Blood pressure variability is an emerging risk factor for cognitive decline and dementia, but mechanisms remain unclear. The current study examined whether visit-to-visit blood pressure variability is related to CSF Alzheimer disease biomarker levels over time and whether associations differed by APOE ε4 carrier status. METHODS In this retrospective analysis of a prospective cohort study, cognitively unimpaired or mildly impaired older adults from the Alzheimer's Disease Neuroimaging Initiative underwent 3 to 4 blood pressure measurements over a 12-month period and ≥1 lumbar puncture for evaluation of CSF phosphorylated tau, total tau, and β-amyloid levels at follow-up (6-108 months later). APOE ε4 carriers were defined as having ≥1 ε4 allele. Visit-to-visit blood pressure variability was determined over 12 months as variability independent of mean. Only CSF samples collected after the final blood pressure measurement were analyzed. Bayesian linear growth modeling investigated the role of blood pressure variability, APOE ε4, and the passage of time on CSF biomarker levels after controlling for several variables, including average blood pressure and baseline hypertension. RESULTS Four hundred sixty-six participants (mean 76.7 [SD 7.1] years of age) were included in the study. Elevated blood pressure variability was associated with increased CSF phosphorylated tau (β = 0.81 [95% CI 0.74, 0.97]), increased total tau (β = 0.98 [95% CI 0.71, 1.31]), and decreased β-amyloid levels (β = -1.52 [95% CI -3.55, -0.34]) at follow-up. APOE ε4 carriers with elevated blood pressure variability had the fastest increase in phosphorylated tau levels (β = 9.03 [95% CI 1.67, 16.36]). Blood pressure variability was not significantly related to total tau or β-amyloid levels over time according to APOE ε4 carrier status. DISCUSSION Older adults with elevated blood pressure variability exhibit increased CSF phosphorylated tau, increased total tau, and decreased β-amyloid over time, suggesting that blood pressure variability may correlate with alterations in Alzheimer disease biomarkers. Findings warrant further study of the relationship between blood pressure variability and the development of Alzheimer disease. APOE ε4 carrier status moderated relationships between blood pressure variability and CSF phosphorylated tau but not total tau or β-amyloid, consistent with other studies relating hemodynamic factors to tau changes.
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Affiliation(s)
- Isabel J Sible
- From the Department of Psychology (I.J.S.), University of Southern California, Los Angeles; and Institute for Memory Impairments and Neurological Disorders (D.A.N.) and Department of Psychological Science (D.A.N.), University of California Irvine
| | - Daniel A Nation
- From the Department of Psychology (I.J.S.), University of Southern California, Los Angeles; and Institute for Memory Impairments and Neurological Disorders (D.A.N.) and Department of Psychological Science (D.A.N.), University of California Irvine.
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Sible IJ, Nation DA. Visit-to-Visit Blood Pressure Variability and Longitudinal Tau Accumulation in Older Adults. Hypertension 2022; 79:629-637. [PMID: 34967222 PMCID: PMC8979412 DOI: 10.1161/hypertensionaha.121.18479] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Elevated blood pressure variability (BPV) is predictive of dementia, independent of average blood pressure levels, but neuropathological mechanisms remain unclear. We examined whether BPV in older adults is related to tau accumulation in brain regions vulnerable to Alzheimer disease and whether relationships are modified by apoϵ4 carrier status. METHODS Two hundred eighty-six Alzheimer's Disease Neuroimaging Initiative participants without history of dementia underwent 3 to 4 blood pressure measurements over 12 months and ≥1 tau positron emission tomography thereafter. BPV was calculated as variability independent of mean. Each scan determined tau burden (standardized uptake value ratio) for a temporal meta-region of interest, including burden from entorhinal cortex, amygdala, parahippocampus, fusiform, inferior temporal, and middle temporal. Bayesian linear growth modeling examined the role of BPV, apolipoprotein ϵ4 carrier status, and time on regional tau accumulation after controlling for several variables, including baseline hypertension. RESULTS Elevated BPV was related to tau accumulation at follow-up in a temporal meta-region, independent of average blood pressure levels (ß, 0.89 [95% credible interval, 0.86-0.92]) and especially in entorhinal cortex (ß, 2.57 [95% credible interval, 2.15-2.99]). Apoϵ4 carriers with elevated BPV had the fastest tau accumulation at follow-up (ß, 1.73 [95% credible interval, 0.47-3.03]). CONCLUSIONS BPV is related to tau accumulation in brain regions vulnerable to Alzheimer disease, independent of average blood pressure. APOEϵ4 modified this relationship. Bidirectionality of findings is possible. BPV may represent a marker of vascular dysfunction related to early-stage tau pathology contributing to Alzheimer disease.
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Affiliation(s)
- Isabel J. Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90007, USA
| | - Daniel A. Nation
- Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA 92697, USA
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
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Sible IJ, Yew B, Dutt S, Li Y, Blanken AE, Jang JY, Ho JK, Marshall AJ, Kapoor A, Gaubert A, Bangen KJ, Sturm VE, Shao X, Wang DJ, Nation DA. Selective vulnerability of medial temporal regions to short-term blood pressure variability and cerebral hypoperfusion in older adults. NEUROIMAGE. REPORTS 2022; 2:100080. [PMID: 35784272 PMCID: PMC9249026 DOI: 10.1016/j.ynirp.2022.100080] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Blood pressure variability is an emerging risk factor for stroke, cognitive impairment, and dementia, possibly through links with cerebral hypoperfusion. Recent evidence suggests visit-to-visit (e.g., over months, years) blood pressure variability is related to cerebral perfusion decline in brain regions vulnerable to Alzheimer's disease. However, less is known about relationships between short-term (e.g., < 24 hours) blood pressure variability and regional cerebral perfusion, and whether these relationships may differ by age. We investigated short-term blood pressure variability and concurrent regional cerebral microvascular perfusion in a sample of community-dwelling older adults without history of dementia or stroke and healthy younger adults. Blood pressure was collected continuously during perfusion MRI. Cerebral blood flow was determined for several brain regions implicated in cerebrovascular dysfunction in Alzheimer's disease. Elevated systolic blood pressure variability was related to lower levels of concurrent cerebral perfusion in medial temporal regions: hippocampus (β = -.60 [95% CI -.90, -.30]; p < .001), parahippocampal gyrus (β = -.57 [95% CI -.89, -.25]; p = .001), entorhinal cortex (β = -.42 [95% CI -.73, -.12]; p = .009), and perirhinal cortex (β = -.37 [95% CI -.72, -.03]; p = .04), and not in other regions, and in older adults only. Findings suggest a possible age-related selective vulnerability of the medial temporal lobes to hypoperfusion in the context of short-term blood pressure fluctuations, independent of average blood pressure, white matter hyperintensities, and gray matter volume, which may underpin the increased risk for dementia associated with elevated BPV.
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Affiliation(s)
- Isabel J. Sible
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Belinda Yew
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Shubir Dutt
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA,Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Yanrong Li
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Anna E. Blanken
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Jung Yun Jang
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Jean K. Ho
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Anisa J. Marshall
- Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA
| | - Arunima Kapoor
- Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA
| | - Aimée Gaubert
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Katherine J. Bangen
- Research Service, Veteran Affairs San Diego Healthcare System, San Diego, CA 92161, USA,Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Virginia E. Sturm
- Department of Neurology, University of California, San Francisco, San Francisco, CA, 94158, USA,Department of Psychiatry, University of California, San Francisco, San Francisco, CA, 94158, USA,Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Xingfeng Shao
- Laboratory of Functional MRI Technology, Mark and Mary Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, CA, 90033, USA
| | - Danny J. Wang
- Laboratory of Functional MRI Technology, Mark and Mary Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, CA, 90033, USA
| | - Daniel A. Nation
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA,Department of Psychological Science, University of California Irvine, Irvine, CA 92697, USA,Corresponding Author: Daniel A. Nation, Ph.D., Associate Professor, University of California Irvine, Department of Psychological Science, 4201 Social and Behavioral Sciences Gateway, Irvine, CA 92697-7085, Phone: (949) 824-9339,
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Lee YK, Mazzucco S, Rothwell PM, Payne SJ, Webb AJS. Blood Pressure Complexity Discriminates Pathological Beat-to-Beat Variability as a Marker of Vascular Aging. J Am Heart Assoc 2022; 11:e022865. [PMID: 35043657 PMCID: PMC9238484 DOI: 10.1161/jaha.121.022865] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Background Beat‐to‐beat blood pressure variability (BPV) is associated with an increased risk of stroke but can be driven by both healthy physiological processes and failure of compensatory mechanisms. Blood pressure (BP) complexity measures structured, organized variations in BP, as opposed to random fluctuations, and its reduction may therefore identify pathological beat‐to‐beat BPV. Methods and Results In the prospective, population‐based OXVASC (Oxford Vascular Study) Phenotyped Cohort with transient ischemic attack or minor stroke, patients underwent at least 5 minutes of noninvasive beat‐to‐beat monitoring of BP (Finometer) and ECG to derive the following: BPV (coefficient of variation) and complexity (modified multiscale entropy) of systolic BP and diastolic BP, heart rate variability (SD of R‐R intervals), and baroreflex sensitivity (BRS; Welch's method), in low‐ (0.04–0.15 Hz) and high‐frequency (0.15–0.4 Hz) bands. Associations between BPV or BP complexity with autonomic indexes and arterial stiffness were determined (linear regression), unadjusted, and adjusted for age, sex, and cardiovascular risk factors. In 908 consecutive, consenting patients, BP complexity was inversely correlated with BPV coefficient of variation (P<0.001) and was similarly reduced in patients with hypertension or diabetes (P<0.001). However, although BPV coefficient of variation had a U‐shaped relationship with age, BP complexity fell systematically across age quintiles (quintile 1: 15.1 [14.0–16.1] versus quintile 5: 13.8 [12.4–15.1]) and was correlated with markers of autonomic dysfunction (heart rate variability SD of R‐R intervals: r = 0.20; BRS low frequency: 0.19; BRS high frequency: 0.26) and arterial stiffness (pulse wave velocity: −0.21; all P<0.001), even after adjustment for clinical variables (heart rate variability SD of R‐R intervals: 0.12; BRS low frequency and BRS high frequency: 0.13 and 0.17; and pulse wave velocity: −0.07; all P<0.05). Conclusions Loss of BP complexity discriminates BPV because of pathological failure of compensatory mechanisms and may represent a less confounded and potentially modifiable risk factor for stroke.
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Affiliation(s)
- Yun-Kai Lee
- Institute of Biomedical Engineering Department of Engineering Science University of Oxford UK
| | - Sara Mazzucco
- Wolfson Centre for Prevention of Stroke and DementiaNuffield Department of Clinical NeurosciencesJohn Radcliffe HospitalUniversity of Oxford UK
| | - Peter M Rothwell
- Wolfson Centre for Prevention of Stroke and DementiaNuffield Department of Clinical NeurosciencesJohn Radcliffe HospitalUniversity of Oxford UK
| | - Stephen J Payne
- Institute of Biomedical Engineering Department of Engineering Science University of Oxford UK
| | - Alastair J S Webb
- Wolfson Centre for Prevention of Stroke and DementiaNuffield Department of Clinical NeurosciencesJohn Radcliffe HospitalUniversity of Oxford UK
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Nagai M, Kato M, Dote K. Visit-to-visit blood pressure variability in mild cognitive impairment: A possible marker of Alzheimer's disease in the SPRINT study? J Clin Hypertens (Greenwich) 2021; 23:2129-2132. [PMID: 34806836 PMCID: PMC8696211 DOI: 10.1111/jch.14388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Michiaki Nagai
- Department of Cardiology, Hiroshima City Asa Hospital, Hiroshima, Japan
| | - Masaya Kato
- Department of Cardiology, Hiroshima City Asa Hospital, Hiroshima, Japan
| | - Keigo Dote
- Department of Cardiology, Hiroshima City Asa Hospital, Hiroshima, Japan
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de Havenon A, Anadani M, Prabhakaran S, Wong KH, Yaghi S, Rost N. Increased Blood Pressure Variability and the Risk of Probable Dementia or Mild Cognitive Impairment: A Post Hoc Analysis of the SPRINT MIND Trial. J Am Heart Assoc 2021; 10:e022206. [PMID: 34533059 PMCID: PMC8649507 DOI: 10.1161/jaha.121.022206] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Increased systolic blood pressure variability (BPV) is associated with stroke, cardiovascular disease, and dementia and mild cognitive impairment. However, prior studies assessing the relationship between BPV and dementia or mild cognitive impairment had infrequent measurement of blood pressure or suboptimal blood pressure control. Methods and Results We performed a post hoc analysis of the SPRINT (Systolic Blood Pressure Intervention Trial) MIND (Memory and Cognition in Decreased Hypertension) trial. The primary outcome was probable dementia during follow‐up. We defined our exposure period, during which blood pressures were collected, as the first 600 days of the trial, and outcomes were ascertained during the subsequent follow‐up. BPV was measured as tertiles of systolic blood pressure standard deviation. We fit Cox proportional hazards models to our outcome. We included 8379 patients. The mean follow‐up was 3.2±1.4 years, during which 316 (3.8%) patients developed dementia. The mean number of blood pressure measurements was 7.8, and in the tertiles of BPV, the SD was 6.3±1.6, 10.3±1.1, and 16.3±3.6 mm Hg, respectively. The rate of dementia was 2.4%, 3.6%, and 5.4% by ascending tertile, respectively (P<0.001). In the Cox models, compared with the lowest tertile of BPV, the highest tertile of BPV increased the risk of dementia in both unadjusted (hazard ratio [HR], 2.36; 95% CI, 1.77–3.15) and adjusted (HR, 1.69; 95% CI, 1.25–2.28) models. Conclusions In a post hoc analysis of the SPRINT MIND trial, we found that higher BPV was associated with the development of probable dementia despite excellent blood pressure control. Additional research is needed to understand how to reduce BPV and if its reduction lowers the risk of cognitive impairment and dementia.
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Affiliation(s)
- Adam de Havenon
- Department of Neurology University of Utah Salt Lake City UT
| | | | | | - Ka-Ho Wong
- Department of Neurology University of Utah Salt Lake City UT
| | - Shadi Yaghi
- Department of Neurology New York University New York NY
| | - Natalia Rost
- Department of Neurology Harvard University Boston MA
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Nagai M, Kario K. Visit-to-visit office blood pressure variability revisited in SPRINT. J Clin Hypertens (Greenwich) 2021; 23:1526-1528. [PMID: 34196479 PMCID: PMC8678787 DOI: 10.1111/jch.14313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 06/21/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Michiaki Nagai
- Department of Cardiology, Hiroshima City Asa Hospital, Hiroshima, Japan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
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