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Hsu CL, Holtzer R, Tam RC, Al Keridy W, Liu-Ambrose T. Physical reserve and its underpinning functional neural networks moderate the relationship between white matter hyperintensity and postural balance in older adults with subcortical ischemic vascular cognitive impairment. Sci Rep 2024; 14:17161. [PMID: 39060551 PMCID: PMC11282073 DOI: 10.1038/s41598-024-68050-1] [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: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
White matter hyperintensities (WMH) are markers of subcortical ischemic vascular cognitive impairment (SIVCI) associated with impaired postural balance. Physical reserve (PR) is a recently established construct that reflects one's capacity to maintain physical function despite brain pathology. This cross-sectional study aims to map functional networks associated with PR, and examining the relationship between PR, WMH, and postural balance. PR was defined in 22 community-dwelling older adults with SIVCI. Functional networks of PR were computed using general linear model. Subsequent analyses examined whether PR and relevant networks moderated the relationship between WMH and postural balance under two conditions-eyes open while standing on foam (EOF) or on floor (EONF). We found that PR and the relevant networks-frontoparietal network (FPN) and default mode network (DMN)-significantly moderated the association between WMH and postural balance. For individuals with high PR, postural balance remained stable regardless of the extent of WMH load; whereas for those with low PR, postural balance worsened as WMH load increased. These results suggest the attenuated effects of WMH on postural stability due to PR may be underpinned by functional neural network reorganization in the FPN and DMN as a part of compensatory processes.
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Affiliation(s)
- Chun Liang Hsu
- The Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, China.
| | - Roee Holtzer
- Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, USA
- Ferkauf Graduate School of Psychology, Yeshiva University, Bronx, NY, USA
| | - Roger C Tam
- Djavad Mowafaghian Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Radiology, University of British Columbia, Vancouver, BC, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Centre for Aging SMART at Vancouver Coastal Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | - Walid Al Keridy
- Djavad Mowafaghian Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Division of Neurology, University of British Columbia Hospital, Vancouver, BC, Canada
- Geriatric Division, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Teresa Liu-Ambrose
- Djavad Mowafaghian Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Centre for Aging SMART at Vancouver Coastal Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
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Brain-Derived Neurotrophic Factor (BDNF) Val66met (rs6265) Polymorphism Associated with Global and Multi-Domain Cognitive Impairment in Ischemic Stroke Patients. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s41470-017-0001-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Wang S, Yuan J, Guo X, Teng L, Jiang H, Gu H, Hu W, Jiang T. Correlation between prefrontal-striatal pathway impairment and cognitive impairment in patients with leukoaraiosis. Medicine (Baltimore) 2017; 96:e6703. [PMID: 28445276 PMCID: PMC5413241 DOI: 10.1097/md.0000000000006703] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Our study aimed to investigate the changes of white matter microstructure of cortico-subcortical pathways using diffusion tensor imaging (DTI), and to explore the relationship between abnormal parameters of DTI and cognitive function underlying in patients with leukoaraiosis (LA).A total of 42 patients with LA and 42 age- and sex-matched healthy controls were recruited from Beijing Chaoyang Hospital, Capital Medical University between January 2012 and December 2012. All the subjects underwent scans of conventional magnetic resonance imaging and DTI, and a comprehensive neuropsychological battery was utilized. The regions of interest (ROIs) were located at the white matter of centrum semiovale, anterior and posterior periventricular white matter, basal ganglia, corpus callosum. The averaged values of mean diffusivity (MD) and fractional anisotropy (FA) were quantified both within white matter lesions (WMLs) and normal appearing white matter (NAWM). A linear regression analysis was performed to assess the association between diffusion parameters and decline in cognitive domains.Patients with LA were associated with comprehensive cognitive function deficits. We found that significantly decreased FA and increased MD in WMLs at the 5 ROIs than that of NAWM and controls (P < .05). The values of FA in NAWM were significantly lower and MD in NAWM were significantly higher at centrum semiovale and posterior periventricular white matter than that of controls (P < .05). The values of FA in WMLs at anterior periventricular white matter were positively related to the performances of cognition in patients with LA (P < .05). The values of FA in NAWM located at anterior periventricular white matter were positively related to the score of Digit-symbol test (r = 0.446, P = .002). The values of FA in NAWM located at anterior periventricular white matter correlated inversely with the Z scores of executive function (r = -0.418, P = .03).In our study, patients with LA exhibited significant cognitive impairment especially in the domains of executive function. The technique of DTI revealed that the reduced FA and increased MD at the corresponding regions of cortico-subcortical pathways in patients with LA. DTI may be of great help for an early pathology of white matter microstructure underlying in patients with LA.
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Affiliation(s)
| | - Junliang Yuan
- Department of Neurology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | | | | | | | | | - Wenli Hu
- Department of Neurology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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Gonçalves C, Pinho MS, Cruz V, Gens H, Oliveira F, Pais J, Rente J, Santana I, Santos JM. Portuguese version of Wechsler Memory Scale–3rd edition’s utility with demented elderly adults. APPLIED NEUROPSYCHOLOGY-ADULT 2016; 24:212-225. [DOI: 10.1080/23279095.2015.1135440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Cátia Gonçalves
- Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
| | - Maria S. Pinho
- Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
| | - Vítor Cruz
- Neurology Department, Entre o Douro e o Vouga Hospital Center, Santa Maria da Feira, Portugal
| | - Helena Gens
- Neurology Department, Coimbra Hospital and University Center, Coimbra, Portugal
| | - Fátima Oliveira
- Neurology Department, Coimbra Hospital and University Center, Coimbra, Portugal
| | - Joana Pais
- Neurology Department, Entre o Douro e o Vouga Hospital Center, Santa Maria da Feira, Portugal
| | - José Rente
- Neurology Department, Baixo Vouga Hospital Center, Aveiro, Portugal
| | - Isabel Santana
- Neurology Department, Coimbra Hospital and University Center, Coimbra, Portugal
| | - José M. Santos
- Neurology Department, Baixo Vouga Hospital Center, Aveiro, Portugal
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Dey AK, Stamenova V, Turner G, Black SE, Levine B. Pathoconnectomics of cognitive impairment in small vessel disease: A systematic review. Alzheimers Dement 2016; 12:831-45. [DOI: 10.1016/j.jalz.2016.01.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 10/21/2015] [Accepted: 01/15/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Ayan K. Dey
- Faculty of Medicine, Institute of Medical Science University of Toronto Toronto Ontario Canada
- Rotman Research Institute Baycrest Hospital Toronto Ontario Canada
| | | | - Gary Turner
- Department of Psychology, Faculty of Health York University Toronto Ontario Canada
| | - Sandra E. Black
- Faculty of Medicine, Institute of Medical Science University of Toronto Toronto Ontario Canada
- Rotman Research Institute Baycrest Hospital Toronto Ontario Canada
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program Sunnybrook Research Institute Toronto Ontario Canada
- Division of Neurology Department of Medicine Sunnybrook Health Sciences Centre Toronto Ontario Canada
- L.C. Campbell Cognitive Neurology Research Unit Sunnybrook Health Sciences Centre Toronto Ontario Canada
| | - Brian Levine
- Faculty of Medicine, Institute of Medical Science University of Toronto Toronto Ontario Canada
- Rotman Research Institute Baycrest Hospital Toronto Ontario Canada
- Department of Psychology University of Toronto Toronto Ontario Canada
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Wang S, Yuan J, Guo X, Peng P, Gu H, Niu S, Fregni F, Chen ACN, Hu W. Neurochemical correlates of cognitive dysfunction in patients with leukoaraiosis: a proton magnetic resonance spectroscopy study. Neurol Res 2012; 34:989-97. [PMID: 23146302 DOI: 10.1179/1743132812y.0000000104] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES Leukoaraiosis (LA) is a common radiological finding in the elderly and may reflect cerebral small vessel disease (SVD). Although SVD has been identified as a major cause of vascular cognitive impairment or vascular dementia, the mechanisms for this association remain unclear. We therefore aimed to measure brain metabolites in LA using proton magnetic resonance spectroscopy ((1)H-MRS) as to determine the relationship between cognitive function and neurochemical white matter profile. METHODS We recruited 23 patients with LA and 23 age- and sex-matched healthy controls consecutively. Multi-voxel (1)H-MRS was performed with a volume of interest located in centrum semiovale that contained mainly white matter voxels. Three main ratios of N-acetyl aspartate (NAA)/Cr, choline (Cho)/Cr and NAA/Cho were obtained. Spearman rank correlation coefficients were calculated between the cognitive function and the measured metabolite ratios. RESULTS We found significantly lower levels of NAA/Cho and NAA/Cr ratios in lesioned white matter in patients with LA than healthy controls (P<0.05). The ratios of NAA/Cho and NAA/Cr in normal appearing white matter (NAWM) were higher than lesioned white matter and lower than controls, but this difference was not significant (P>0.05). There was a positive relationship between Mini-Mental State Examination (MMSE) and NAA/Cho in NAWM (r = 0.417, P = 0.048), and also a positive relationship between MMSE and NAA/Cr in lesioned white matter (r = 0.551, P = 0.006) in patients with LA. A positive relationship between the Z scores of the executive function and NAA/Cho in lesioned white matter (r = 0.557, P = 0.006) was also found. CONCLUSION The main finding of this study was a significant reduction in the ratios of NAA/Cr and NAA/Cho in lesioned white matter, which indicates a marker of neuronal loss or dysfunction in patients with LA, which was correlated with cognitive function. This relationship between cognitive function and metabolic changes suggests that (1)H-MRS can be explored as a marker for cognitive dysfunction in patients with LA.
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Affiliation(s)
- Shuangkun Wang
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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Engelhardt E, Tocquer C, André C, Moreira DM, Okamoto IH, Cavalcanti JLDS. Vascular dementia: Cognitive, functional and behavioral assessment. Recommendations of the Scientific Department of Cognitive Neurology and Aging of the Brazilian Academy of Neurology. Part II. Dement Neuropsychol 2011; 5:264-274. [PMID: 29213753 PMCID: PMC5619039 DOI: 10.1590/s1980-57642011dn05040004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Accepted: 11/02/2011] [Indexed: 01/10/2023] Open
Abstract
Vascular dementia (VaD) is the most prevalent form of secondary dementia and the second most common of all dementias. The present paper aims to define guidelines on the basic principles for treating patients with suspected VaD (and vascular cognitive impairment - no dementia) using an evidence-based approach. The material was retrieved and selected from searches of databases (Medline, Scielo, Lilacs), preferentially from the last 15 years, to propose a systematic way to assess cognition, function and behavior, and disease severity staging, with instruments adapted for our milieu, and diagnosis disclosure. The present proposal contributes to the definition of standard diagnostic criteria for VaD based on various levels of evidence. It is noteworthy that only around half of the population of patients with vascular cognitive impairment present with dementia, which calls for future proposals defining diagnostic criteria and procedures for this condition.
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Affiliation(s)
- Eliasz Engelhardt
- Full Professor (retired) – UFRJ, Coordinator of the
Cognitive Neurology and Behavior Sector, INDC, CDA/IPUB, UFRJ, Rio de Janeiro RJ,
Brazil
| | - Carla Tocquer
- Neurologist, Masters and PhD in Neuropsychology, Claude
Bernard University, France
| | - Charles André
- Associate Professor of Neurology, Faculty of Medicine,
UFRJ. Medical Director of SINAPSE Rehabilitation and Neurophysiology, Rio de Janeiro
RJ, Brazil
| | - Denise Madeira Moreira
- Adjunct Professor of Radiology, School of Medicine, UFRJ.
Head of Radiology Sector, INDC, UFRJ, Rio de Janeiro RJ, Brazil
| | - Ivan Hideyo Okamoto
- Department of Neurology Neurosurgery, UNIFESP, Institute
of Memory, UNIFESP, São Paulo SP, Brazil
| | - José Luiz de Sá Cavalcanti
- Adjunct Professor of Neurology, INDC, UFRJ. Cognitive
Neurology and Behavior Sector, INDC, UFRJ, Rio de Janeiro RJ, Brazil
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Wagner F, Pawlowski J, Yates DB, Camey SA, Trentini CM. Viabilidade da estimativa de QI a partir dos subtestes Vocabulário e Cubos da WAIS-III. PSICO-USF 2010. [DOI: 10.1590/s1413-82712010000200009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objetivou-se avaliar a viabilidade de estimar o Quociente de Inteligência (QI) de adultos por meio de duas estratégias que utilizam uma forma curta constituída pelos subtestes Vocabulário e Cubos da Escala Wechsler de Inteligência para Adultos (WAIS-III). Participaram do estudo 77 homens e mulheres, com idade média de 39,1 anos (dp=13,4). Foi aplicada a WAIS-III e questionários para cumprir os critérios de inclusão dos participantes sem prejuízos neurológicos e psiquiátricos. Para avaliar a concordância entre as duas estratégias de estimar o QI, utilizou-se o método estatístico proposto por Bland e Altman. Como resultado, encontrou-se que as estimativas de QI geradas pelas duas estratégias apresentam concordância com a medida do QI realizada pela aplicação da escala completa apenas em alguns dos casos avaliados. Sugere-se cautela na utilização dessas estratégias para estimar o QI de adultos.
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