scholarly journals Intellectual demand and formal education as: cognitive protection factors in Alzheimer's disease

2010 ◽  
Vol 4 (4) ◽  
pp. 320-324 ◽  
Author(s):  
José Roberto Wajman ◽  
Paulo Henrique Ferreira F. Bertolucci
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Educational Level ◽  
Formal Education ◽  
Cognitive Reserve ◽  
Functional Evaluation ◽  
Functional Scale ◽  
Low Education ◽  
Lower Education ◽  
Professional Occupation

Abstract To investigate the possible association between educational level and previous professional occupation, and objective cognitive and functional evaluation in a sample of elderly patients with Alzheimer's disease. Methods: Through retrospective analysis of medical files, 174 patients with probable Alzheimer disease were randomly selected, classified and submitted to analysis according to previous professional occupation and years of formal education. Results: Subjects with lower education and less intellectually-demanding occupations performed worse than higher educated subjects in all cognitive subtests and on the functional scale. Conclusions: Results indicate that not only the total years of education, but also professional occupation has an impact on cognition and functioning in accordance with the hypothesis of cognitive reserve. Our findings confirmed this hypothesis, where subjects with higher education/ higher intellectual demand manifested first symptoms later than low education/ low intellectual demand subjects, with the latter group also exhibiting faster disease progression.

A Novel Computational Proxy for Characterizing Cognitive Reserve in Alzheimer’s Disease

2020 ◽  
Vol 78 (3) ◽  
pp. 1217-1228
Author(s):  
Ying Zhang ◽  
Yajing Hao ◽  
Lang Li ◽  
Kai Xia ◽  
Guorong Wu ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
High Education ◽  
Statistical Model ◽  
Socioeconomic Factors ◽  
Cognitive Reserve ◽  
Demographic Data ◽  
Education Group ◽  
Low Education ◽  
And Gender

Background: Although the abnormal depositions of amyloid plaques and neurofibrillary tangles are the hallmark of Alzheimer’s disease (AD), converging evidence shows that the individual’s neurodegeneration trajectory is regulated by the brain’s capability to maintain normal cognition. Objective: The concept of cognitive reserve has been introduced into the field of neuroscience, acting as a moderating factor for explaining the paradoxical relationship between the burden of AD pathology and the clinical outcome. It is of high demand to quantify the degree of conceptual cognitive reserve on an individual basis. Methods: We propose a novel statistical model to quantify an individual’s cognitive reserve against neuropathological burdens, where the predictors include demographic data (such as age and gender), socioeconomic factors (such as education and occupation), cerebrospinal fluid biomarkers, and AD-related polygenetic risk score. We conceptualize cognitive reserve as a joint product of AD pathology and socioeconomic factors where their interaction manifests a significant role in counteracting the progression of AD in our statistical model. Results: We apply our statistical models to re-investigate the moderated neurodegeneration trajectory by considering cognitive reserve, where we have discovered that 1) high education individuals have significantly higher reserve against the neuropathology than the low education group; however, 2) the cognitive decline in the high education group is significantly faster than low education individuals after the level of pathological burden increases beyond the tipping point. Conclusion: We propose a computational proxy of cognitive reserve that can be used in clinical routine to assess the progression of AD.

scholarly journals Interaction of Alzheimer’s Disease-Associated Genetic Risk with Indicators of Socioeconomic Position on Mild Cognitive Impairment in the Heinz Nixdorf Recall Study

2021 ◽  
pp. 1-11
Author(s):  
Mirjam Frank ◽  
Jonas Hensel ◽  
Lisa Baak ◽  
Sara Schramm ◽  
Nico Dragano ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Socioeconomic Position ◽  
Genetic Risk ◽  
Late Onset ◽  
Heinz Nixdorf Recall Study ◽  
Low Education ◽  
Additive Scale

Background: The apolipoprotein E (APOE) ɛ4 allele is reported to be a strong genetic risk factor for mild cognitive impairment (MCI) and Alzheimer’s disease (AD). Additional genetic loci have been detected that influence the risk for late-onset AD. As socioeconomic position (SEP) is also strongly related to cognitive decline, SEP has been suggested to be a possible modifier of the genetic effect on MCI. Objective: To investigate whether APOE ɛ4 and a genetic sum score of AD-associated risk alleles (GRSAD) interact with SEP indicators to affect MCI in a population-based cohort. Methods: Using data of 3,834 participants of the Heinz Nixdorf Recall Study, APOE ɛ4 and GRSAD by SEP interactions were assessed using logistic regression models, as well as SEP-stratified genetic association analysis. Interaction on additive scale was calculated using the relative excess risk due to interaction (RERI). All analysis were additionally stratified by sex. Results: Indication for interaction on the additive scale was found between APOE ɛ4 and low education on MCI (RERI: 0.52 [95% -confidence interval (CI): 0.01; 1.03]). The strongest genetic effects of the APOE ɛ4 genotype on MCI were observed in groups of low education (Odds ratio (OR): 1.46 [95% -CI: 0.79; 2.63] for≤10 years of education versus OR: 1.00 [95% -CI: 0.43; 2.14] for≥18 years of education). Sex stratified results showed stronger effects in women. No indication for interaction between the GRSAD and SEP indicators on MCI was observed. Conclusion: Results indicate that low education may have an impact on APOE ɛ4 expression on MCI, especially among women.

[IC-P-106]: PREDICTING PROGRESSION IN PRE-DEMENTIA STAGES OF ALZHEIMER's DISEASE WITH A NEUROIMAGING MEASURE OF COGNITIVE RESERVE

2017 ◽  
Vol 13 (7S_Part_2) ◽  
pp. P81-P82
Author(s):  
Anita C. van Loenhoud ◽  
Rik Ossenkoppele ◽  
Alle Meije Wink ◽  
Colin Groot ◽  
Jos WR. Twisk ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Reserve

Interaction between cognitive reserve and brain complexity to mitigate the impact of atrophy in early Alzheimer’s disease

2021 ◽  
Vol 429 ◽  
pp. 117829
Author(s):  
Laura Serra ◽  
Giulia Giancaterino ◽  
Giovanni Giulietti ◽  
Michela Bruschini ◽  
Andrea Bassi ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Reserve ◽  
Early Alzheimer’S Disease ◽  
The Impact

The Role of Cognitive Reserve in Alzheimer’s Disease and Aging: A Multi-Modal Imaging Review

2018 ◽  
Vol 66 (4) ◽  
pp. 1341-1362 ◽  
Author(s):  
Arianna Menardi ◽  
Alvaro Pascual-Leone ◽  
Peter J. Fried ◽  
Emiliano Santarnecchi
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Reserve

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.

Discrepancy Between the Degree of Cognitive Impairment and Brain Imaging Abnormalities in Alzheimer’s Disease Patients Is Associated with Cognitive Reserve

2021 ◽  
pp. 1-9
Author(s):  
Tomohiko Sato ◽  
Haruo Hanyu ◽  
Yumi Koyama ◽  
Haruka Horita ◽  
Toshinori Aoki ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Brain Imaging ◽  
Cognitive Reserve ◽  
Photon Emission ◽  
Clinical Manifestations ◽  
Leisure Activity ◽  
Emission Computed Tomography ◽  
Imaging Findings

Background: In Alzheimer’s disease (AD) patients, the severity of cognitive impairment is thought to correlate with the degree of brain imaging abnormalities. However, some patients show only mild cognitive deficit, despite severe brain atrophy on magnetic resonance imaging (MRI) or marked hypoperfusion in the cerebral cortices on single-photon emission computed tomography (SPECT). This suggests that cognitive reserve (CR) can compensate for the clinical manifestations of AD in patients with extensive brain pathology. Objective: We aimed to determine whether this discrepancy between cognitive and imaging findings is associated with CR. Methods: Factors associated with the discrepancy between the degree of cognitive impairment and MRI (medial temporal lobe atrophy) and SPECT (posterior cerebral hypoperfusion) findings were analyzed in 135 patients with probable AD. Factors as proxies for CR included education, occupation, leisure activity, comorbidities, frailty, and other demographics. The discrepancy index (DI) was calculated as the difference between the degree of imaging abnormalities and the degree of cognitive dysfunction. Results: Multiple regression analysis showed that leisure activity and education were significantly associated with the discrepancy between cognitive and imaging findings. When the level of CR was determined based on leisure activity and education, the high-CR group showed a significantly larger DI than the moderate- and low-CR groups. Conclusion: The discrepancy between cognitive and imaging findings in patients with AD is associated with CR, measured using a combination of two indicators, i.e., leisure activity and education. Therefore, lifestyle interventions may delay the appearance of clinical symptoms resulting from underlying AD pathology, by increasing CR.

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