scholarly journals Plasma osteopontin as a biomarker of Alzheimer’s disease and vascular cognitive impairment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuek Ling Chai ◽  
Joyce R. Chong ◽  
Ainiah R. Raquib ◽  
Xin Xu ◽  
Saima Hilal ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Inflammatory Cytokines ◽  
Inflammatory Marker ◽  
Vascular Diseases ◽  
The Elderly ◽  
Vascular Cognitive Impairment ◽  
Cross Sectional Study ◽  
Cross Sectional

AbstractCerebrovascular disease (CeVD) and neurodegenerative dementia such as Alzheimer’s disease (AD) are frequently associated comorbidities in the elderly, sharing common risk factors and pathophysiological mechanisms including neuroinflammation. Osteopontin (OPN) is an inflammatory marker found upregulated in vascular diseases as well as in AD. However, its involvement in vascular dementia (VaD) and pre-dementia stages, namely cognitive impairment no dementia (CIND), both of which fall under the spectrum of vascular cognitive impairment (VCI), has yet to be examined. Its correlations with inflammatory cytokines in cognitive impairment also await investigation. 80 subjects with no cognitive impairment (NCI), 160 with CIND and 144 with dementia were included in a cross-sectional study on a Singapore-based memory clinic cohort. All subjects underwent comprehensive clinical, neuropsychological and brain neuroimaging assessments, together with clinical diagnoses based on established criteria. Blood samples were collected and OPN as well as inflammatory cytokines interleukin (IL)-6, IL-8 and tumor necrosis factor (TNF) were measured using immunoassays. Multivariate regression analyses showed significant associations between increased OPN and VCI groups, namely CIND with CeVD, AD with CeVD and VaD. Interestingly, higher OPN was also significantly associated with AD even in the absence of CeVD. We further showed that increased OPN significantly associated with neuroimaging markers of CeVD and neurodegeneration, including cortical infarcts, lacunes, white matter hyperintensities and brain atrophy. OPN also correlated with elevated levels of IL-6, IL-8 and TNF. Our findings suggest that OPN may play a role in both VCI and neurodegenerative dementias. Further longitudinal analyses are needed to assess the prognostic utility of OPN in disease prediction and monitoring.

Plasma Osteopontin as a Biomarker of Alzheimer’s Disease and Vascular Cognitive Impairment: A Case-Control Study

2020 ◽  
Author(s):  
Yuek Ling Chai ◽  
Joyce R Chong ◽  
Ainiah R Raquib ◽  
Xin Xu ◽  
Saima Hilal ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Inflammatory Cytokines ◽  
Inflammatory Marker ◽  
Vascular Diseases ◽  
The Elderly ◽  
Vascular Cognitive Impairment ◽  
Cross Sectional Study ◽  
Cross Sectional

Abstract Background: Cerebrovascular disease (CeVD) and neurodegenerative dementia such as Alzheimer’s disease (AD) are frequently associated comorbidities in the elderly, sharing common risk factors and pathophysiological mechanisms including neuroinflammation. Osteopontin (OPN) is an inflammatory marker found upregulated in vascular diseases as well as in AD. However, its involvement in vascular dementia (VaD) and pre-dementia stages, namely cognitive impairment no dementia (CIND), both of which fall under the spectrum of vascular cognitive impairment (VCI) has yet to be examined. Its correlations with inflammatory cytokines in cognitive impairment also await investigation. Methods: 80 subjects with no cognitive impairment (NCI), 160 with CIND and 144 with dementia were included in a cross-sectional study on a Singapore-based memory clinic cohort. All subjects underwent comprehensive clinical, neuropsychological and brain neuroimaging assessments, together with clinical diagnoses based on established criteria. Blood samples were collected and OPN as well as inflammatory cytokines interleukin (IL)-6, IL-8 and tumor necrosis factor (TNF) were measured using immunoassays. Results: Multivariate regression analyses showed significant associations between increased OPN and VCI groups, namely CIND with CeVD, AD with CeVD and VaD. Interestingly, higher OPN was also significantly associated with AD even in the absence of CeVD. We further showed that increased OPN significantly associated with neuroimaging markers of CeVD and neurodegeneration, including cortical infarcts, lacunes, white matter hyperintensities and brain atrophy. OPN also correlated with elevated levels of IL-6, IL-8 and TNF. Conclusions: Our findings suggest that OPN may play a role in both VCI and neurodegenerative dementias. Further longitudinal analyses are needed to assess the prognostic utility of OPN in disease prediction and monitoring.

scholarly journals Prevalência, desempenho cognitivo e funcionalidade de idosos com Doença de Alzheimer em instituições de longa permanência de Bento Gonçalves

2017 ◽  
Vol 5 (1) ◽  
pp. 23 ◽  
Author(s):  
Daniela Fernandes Tonholi ◽  
Gisele Oltramari
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Performance ◽  
Junior High School ◽  
Functional Independence Measure ◽  
The Elderly ◽  
Functional Independence ◽  
Cross Sectional Study ◽  
Functional Evaluation ◽  
Cross Sectional

Aims: To determine the prevalence, cognitive performance and functionality of elderly people with Alzheimer's disease in long-stay institutions for the elderlyin the city of Bento Gonçalves. Methods: Cross-sectional study including 24 elderly residents in long-stay institutions for the elderly, sociodemographic datawere obtained, and the elderly were subjected to functional evaluation by the Functional Independence Measure and evaluation of cognitive performancethrough the mental state the Mini (MMSE). Results: Most of the residents were female (83%), as 54.2% schooling had completed junior high school, mostof the elderly (70.8%) was admitted by the will of the family, 100% of the elderly showed cognitive performance bad, and the smaller the more dependentcognitive performance was the individual. Conclusion: institutionalized elderly with Alzheimer's disease had negative results on cognitive performance,as well as deficits in their ability to perform activities of daily living, thus altering their functionality.Keywords: aging; functionality; cognition; Alzheimer Disease; long-stay institutions.

Perceived Stress is Associated with Alzheimer’s Disease Cerebrospinal Fluid Biomarkers in African Americans with Mild Cognitive Impairment

2020 ◽  
Vol 77 (2) ◽  
pp. 843-853
Author(s):  
Antoine R. Trammell ◽  
Darius J. McDaniel ◽  
Malik Obideen ◽  
Maureen Okafor ◽  
Tiffany L. Thomas ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cerebrospinal Fluid ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
African Americans ◽  
Racial Differences ◽  
Perceived Stress ◽  
Cross Sectional Study ◽  
Cross Sectional

Background: African Americans (AA) have a higher Alzheimer’s disease (AD) prevalence and report more perceived stress than White Americans. The biological basis of the stress-AD link is unclear. This study investigates the connection between stress and AD biomarkers in a biracial cohort. Objective: Establish biomarker evidence for the observed association between stress and AD, especially in AA. Methods: A cross-sectional study (n = 364, 41.8% AA) administering cognitive tests and the perceived stress scale (PSS) questionnaire. A subset (n = 309) provided cerebrospinal fluid for measurement of Aβ42, Tau, Ptau, Tau/Aβ42 (TAR), and Ptau/Aβ42 (PTAR). Multivariate linear regression, including factors that confound racial differences in AD, was performed. Results: Higher PSS scores were associated with higher Ptau (β= 0.43, p = 0.01) and PTAR (β= 0.005, p = 0.03) in AA with impaired cognition (mild cognitive impairment). Conclusion: Higher PSS scores were associated with Tau-related AD biomarker indices in AA/MCI, suggesting a potential biological connection for stress with AD and its racial disparity.

Gait analysis with videogrammetry can differentiate healthy elderly, mild cognitive impairment, and Alzheimer's disease: A cross-sectional study

2020 ◽  
Vol 131 ◽  
pp. 110816 ◽  
Author(s):  
Felipe de Oliveira Silva ◽  
José Vinícius Ferreira ◽  
Jéssica Plácido ◽  
Daniel Chagas ◽  
Jomilto Praxedes ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Gait Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Healthy Elderly

scholarly journals Enablers And Barriers To Utilisation Of Available Formal Support By Institutionalised Individuals With Alzheimer’s Disease And Related Dementias In Rural South Western Uganda: A Qualitative Descriptive Study

2019 ◽  
Author(s):  
VALLENCE NIYONZIMA ◽  
Samuel Maling ◽  
Zeina Chemali
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Rural Communities ◽  
Support Services ◽  
The Elderly ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Term Care ◽  
Formal Support ◽  
Western Uganda

Abstract Background: The world’s population is ageing resulting in a larger number of people living with dementia. Prevalence of dementia for persons aged above 60 years is expected to increase . There is paucity of information regarding formal support available for institutionalised individuals with AD/ADRD, enablers and barriers to its utilisation particularly South Western Uganda. Therefore this study, filling this knowledge gap, sought to assess formal support available for individuals with AD/ADRD, enablers and barriers to its utilisation in rural communities in South Western Uganda Methods: This study was conducted in two nongovernmental community based facilities for the elderly in South Western Uganda employing a qualitative cross sectional study design. Purposive sampling was used to recruit caretakers of individuals with Alzheimer’s disease and related dementias. A total of 28 in depth interviews and 6 key informant interviews were conducted. Results: Three arching themes emerged: 1) Formal support services available, 2) Enablers and 3) Barriers to the utilisation of the formal support services in institutionalised patients with AD/ADRD in rural communities in South Western Uganda. Conclusions: These findings highlight the importance of formal care in the long-term care of individuals with AD/ADRD. There is a dire need to equip caretakers involved in the care of patients with AD/ADRD with the required skill set and include formal support services in the mainstream primary health care to make the services accessible.

scholarly journals The use of the Hungarian Test Your Memory (TYM-HUN), MMSE, and ADAS-Cog tests for patients with Mild Cognitive Impairment (MCI) in a Hungarian population: a cross-sectional study

2020 ◽  
Author(s):  
Szabolcs Garbóczy ◽  
Éva Magócs ◽  
Gergő Szőllősi ◽  
Szilvia Harsányi ◽  
Égerházi Anikó ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Early Recognition ◽  
Rank Correlation ◽  
Cross Sectional Study ◽  
Disease Assessment ◽  
Cross Sectional ◽  
Spearman’S Rank Correlation

Abstract BACKGROUND: Mild cognitive impairment (MCI) often presages the development of Alzheimer's disease (AD). Accurate and early identification of cognitive impairment will substantially reduce the burden on the family and alleviate the costs for the whole society. There is a need for testing methods that are easy to perform even in a general practitioner’s office, inexpensive and non-invasive, which could help the early recognition of mental decline. We have selected Test Your Memory (TYM), which has proven to be reliable for detecting AD and MCI in several countries. Our study was designed to test the usability of the TYM-HUN comparing with the Mini-Mental State Examination (MMSE) and the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) in MCI recognition in the Hungarian population.METHODS: TYM test was translated and validated into Hungarian (TYM-HUN) in a previous study. The TYM-HUN test was used in conjunction with and compared with the MMSE and the ADAS-Cog. For our study, 50 subjects were selected: 25 MCI patients and 25 healthy controls (HC). Spearman’s rank correlation was used to analyse the correlation between the scores of MMSE and ADAS-Cog with TYM-HUN.RESULTS: MCI can be distinguished from normal aging using TYM-HUN. We established a 'cut-off' point of TYM-HUN (44/45points) where optimal sensitivity (80%) and specificity (92%) values were obtained to screen MCI. The total TYM-HUN scores significantly correlated with the MMSE scores (ρ=0.626; p<0.001) and ADAS-Cog scores (ρ=-0.723; p<0.001).CONCLUSIONS: Our results showed that the Hungarian version of TYM (TYM-HUN) is a reliable, fast, self-administered questionnaire with the right low threshold regarding MCI and can be used for the early diagnosis of cognitive impairment.

scholarly journals The use of the Hungarian Test Your Memory (TYM-HUN), MMSE, and ADAS-Cog tests for patients with mild cognitive impairment (MCI) in a Hungarian population: a cross-sectional study

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Szabolcs Garbóczy ◽  
Éva Magócs ◽  
Gergő József Szőllősi ◽  
Szilvia Harsányi ◽  
Anikó Égerházi ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Early Recognition ◽  
Rank Correlation ◽  
Cross Sectional Study ◽  
Disease Assessment ◽  
Cross Sectional ◽  
Hungarian Population

Abstract Background Mild cognitive impairment (MCI) often presages the development of Alzheimer’s disease (AD). Accurate and early identification of cognitive impairment will substantially reduce the burden on the family and alleviate the costs for the whole society. There is a need for testing methods that are easy to perform even in a general practitioner’s office, inexpensive and non-invasive, which could help the early recognition of mental decline. We have selected the Test Your Memory (TYM), which has proven to be reliable for detecting AD and MCI in several countries. Our study was designed to test the usability of the Hungarian version of the TYM (TYM-HUN) comparing with the Mini-Mental State Examination (MMSE) and the Alzheimer’s Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) in MCI recognition in the Hungarian population. Methods TYM test was translated and validated into Hungarian (TYM-HUN) in a previous study. The TYM-HUN test was used in conjunction with and compared with the MMSE and the ADAS-Cog. For our study, 50 subjects were selected: 25 MCI patients and 25 healthy controls (HC). Spearman’s rank correlation was used to analyse the correlation between the scores of MMSE and ADAS-Cog with TYM-HUN and the receiver operating characteristic (ROC) curve was established. Results MCI can be distinguished from normal aging using TYM-HUN. We established a ‘cut-off’ point of TYM-HUN (44/45points) where optimal sensitivity (80%) and specificity (96%) values were obtained to screen MCI. The total TYM-HUN scores significantly correlated with the MMSE scores (ρ = 0.626; p < 0.001) and ADAS-Cog scores (ρ = − 0.723; p < 0.001). Conclusions Our results showed that the TYM-HUN is a reliable, fast, self-administered questionnaire with the right low threshold regarding MCI and can be used for the early diagnosis of cognitive impairment.

scholarly journals Immunomodulatory sphingosine-1-phosphates as plasma biomarkers of Alzheimer’s disease and vascular cognitive impairment

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Xin Ying Chua ◽  
Yuek Ling Chai ◽  
Wee Siong Chew ◽  
Joyce R. Chong ◽  
Hui Li Ang ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Cell Line ◽  
Inflammatory Cytokines ◽  
Vascular Cognitive Impairment ◽  
Cerebrovascular Diseases ◽  
Ongoing Research ◽  
Primary Astrocytes ◽  
Pro Inflammatory Cytokines

Abstract Background There has been ongoing research impetus to uncover novel blood-based diagnostic and prognostic biomarkers for Alzheimer’s disease (AD), vascular dementia (VaD), and related cerebrovascular disease (CEVD)-associated conditions within the spectrum of vascular cognitive impairment (VCI). Sphingosine-1-phosphates (S1Ps) are signaling lipids which act on the S1PR family of cognate G-protein-coupled receptors and have been shown to modulate neuroinflammation, a process known to be involved in both neurodegenerative and cerebrovascular diseases. However, the status of peripheral S1P in AD and VCI is at present unclear. Methods We obtained baseline bloods from individuals recruited into an ongoing longitudinal cohort study who had normal cognition (N = 80); cognitive impairment, no dementia (N = 160); AD (N = 113); or VaD (N = 31), along with neuroimaging assessments of cerebrovascular diseases. Plasma samples were processed for the measurements of major S1P species: d16:1, d17:1, d18:0, and d18:1, along with pro-inflammatory cytokines interleukin (IL)-6, IL-8, and tumor necrosis factor (TNF). Furthermore, in vitro effects of S1Ps on cytokine expression were also studied in an astrocytoma cell line and in rodent primary astrocytes. Results Of the S1Ps species measured, only d16:1 S1P was significantly reduced in the plasma of VaD, but not AD, patients, while the d18:1 to d16:1 ratios were increased in all cognitive subgroups (CIND, AD, and VaD). Furthermore, d18:1 to d16:1 ratios correlated with levels of IL-6, IL-8, and TNF. In both primary astrocytes and an astroglial cell line, treatment with d16:1 or d18:1 S1P resulted in the upregulation of mRNA transcripts of pro-inflammatory cytokines, with d18:1 showing a stronger effect than d16:1. Interestingly, co-treatment assays showed that the addition of d16:1 reduced the extent of d18:1-mediated gene expression, indicating that d16:1 may function to “fine-tune” the pro-inflammatory effects of d18:1. Conclusion Taken together, our data suggest that plasma d16:1 S1P may be useful as a diagnostic marker for VCI, while the d18:1 to d16:1 S1P ratio is an index of dysregulated S1P-mediated immunomodulation leading to chronic inflammation-associated neurodegeneration and cerebrovascular damage.

Spatial Navigation in the Elderly with Alzheimer’s Disease: A Cross-Sectional Study

2018 ◽  
Vol 66 (4) ◽  
pp. 1683-1694 ◽  
Author(s):  
Marcos Zanco ◽  
Jessica Plácido ◽  
Valeska Marinho ◽  
José Vinicius Ferreira ◽  
Felipe de Oliveira ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Spatial Navigation ◽  
The Elderly ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional

scholarly journals The use of the Hungarian Test Your Memory (TYM-HUN), MMSE, and ADAS-Cog tests for patients with Mild Cognitive Impairment (MCI) in a Hungarian population: a cross-sectional study

2020 ◽  
Author(s):  
Szabolcs Garbóczy ◽  
Éva Magócs ◽  
Gergő Szőllősi ◽  
Szilvia Harsányi ◽  
Égerházi Anikó ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Early Recognition ◽  
Rank Correlation ◽  
Cross Sectional Study ◽  
Disease Assessment ◽  
Cross Sectional ◽  
Spearman’S Rank Correlation ◽  
The Right

Abstract BACKGROUNDMild cognitive impairment (MCI) often presages the development of Alzheimer's disease (AD). Accurate and early identification of cognitive impairment will substantially reduce the burden on the family and alleviate the costs for the whole society. There is a need for testing methods that are easy to perform even in a general practitioner’s office, inexpensive and non-invasive, which could help the early recognition of mental decline. We have selected the Test Your Memory (TYM), which has proven to be reliable for detecting AD and MCI in several countries. Our study was designed to test the usability of the Hungarian version of the TYM (TYM-HUN) comparing with the Mini-Mental State Examination (MMSE) and the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) in MCI recognition in the Hungarian population.METHODSTYM test was translated and validated into Hungarian (TYM-HUN) in a previous study. The TYM-HUN test was used in conjunction with and compared with the MMSE and the ADAS-Cog. For our study, 50 subjects were selected: 25 MCI patients and 25 healthy controls (HC). Spearman’s rank correlation was used to analyse the correlation between the scores of MMSE and ADAS-Cog with TYM-HUN and the receiver operating characteristic (ROC) curve was established.RESULTSMCI can be distinguished from normal aging using TYM-HUN. We established a 'cut-off' point of TYM-HUN (44/45points) where optimal sensitivity (80%) and specificity (96%) values were obtained to screen MCI. The total TYM-HUN scores significantly correlated with the MMSE scores (ρ=0.626; p<0.001) and ADAS-Cog scores (ρ=-0.723; p<0.001).CONCLUSIONSOur results showed that the TYM-HUN is a reliable, fast, self-administered questionnaire with the right low threshold regarding MCI and can be used for the early diagnosis of cognitive impairment.

Sign in / Sign up

Export Citation Format

Share Document