Subjective cognitive decline as a predictor of future cognitive decline: a systematic review

Detalhes bibliográficos
Autor(a) principal: Parfenov,Vladimir Anatolevich
Data de Publicação: 2020
Outros Autores: Zakharov,Vladimir Vladimirovich, Kabaeva,Anastasia Romanovna, Vakhnina,Natalya Vasilyevna
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Dementia & Neuropsychologia
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642020000300248
Resumo: ABSTRACT. Over 44 million people suffer from dementia around the world. Researchers estimated that there will be 48.1 million people with dementia by 2020 and 90.3 million by 2040. In addition to dementia, mild cognitive impairment (MCI) and subjective cognitive decline (SCD) relate to cognitive impairment. It has been established that MCI precedes dementia, however the significance of SCD is still unclear. Recent studies suggest that SCD could be a risk factor for objective cognitive impairment. SCD is defined as а self-estimated decline in cognitive capacity in comparison to an individual’s previous level of functioning, which cannot be determined by neuropsychological tests. Objectives: To perform a systematic review of prospective longitudinal cohort studies that assessed the risk of MCI and dementia among people with SCD. Methods: A search was carried out for all available peer-reviewed articles in English related to SCD in PubMed and PsychINFO databases from database initiation through January 2020. The keywords used for the search were ‘subjective cognitive (or memory) impairment (or decline or complaints)’. Three authors separately determined the inclusion or exclusion of all articles retrieved for full-text evaluation. Results: The chance of progression to dementia in the SCD group was 2.17 (95% confidence interval [95%CI] 1.53‒3.07; p<0.05) compared to normal aging. Furthermore, the SCD group was 2.15 times more likely to progress to MCI than the group without SCD (95%CI 1.39‒3.30; p=0.005). Conclusions: SCD might precede cognitive impairment, however, more detailed longitudinal studies should be conducted.
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spelling Subjective cognitive decline as a predictor of future cognitive decline: a systematic reviewcognitiondementiacognitive dysfunctionagingAlzheimer disease.ABSTRACT. Over 44 million people suffer from dementia around the world. Researchers estimated that there will be 48.1 million people with dementia by 2020 and 90.3 million by 2040. In addition to dementia, mild cognitive impairment (MCI) and subjective cognitive decline (SCD) relate to cognitive impairment. It has been established that MCI precedes dementia, however the significance of SCD is still unclear. Recent studies suggest that SCD could be a risk factor for objective cognitive impairment. SCD is defined as а self-estimated decline in cognitive capacity in comparison to an individual’s previous level of functioning, which cannot be determined by neuropsychological tests. Objectives: To perform a systematic review of prospective longitudinal cohort studies that assessed the risk of MCI and dementia among people with SCD. Methods: A search was carried out for all available peer-reviewed articles in English related to SCD in PubMed and PsychINFO databases from database initiation through January 2020. The keywords used for the search were ‘subjective cognitive (or memory) impairment (or decline or complaints)’. Three authors separately determined the inclusion or exclusion of all articles retrieved for full-text evaluation. Results: The chance of progression to dementia in the SCD group was 2.17 (95% confidence interval [95%CI] 1.53‒3.07; p<0.05) compared to normal aging. Furthermore, the SCD group was 2.15 times more likely to progress to MCI than the group without SCD (95%CI 1.39‒3.30; p=0.005). Conclusions: SCD might precede cognitive impairment, however, more detailed longitudinal studies should be conducted.Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento2020-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642020000300248Dementia &amp; Neuropsychologia v.14 n.3 2020reponame:Dementia & Neuropsychologiainstname:Associação de Neurologia Cognitiva e do Comportamento (ANCC)instacron:ANCC10.1590/1980-57642020dn14-030007info:eu-repo/semantics/openAccessParfenov,Vladimir AnatolevichZakharov,Vladimir VladimirovichKabaeva,Anastasia RomanovnaVakhnina,Natalya Vasilyevnaeng2020-09-15T00:00:00Zoai:scielo:S1980-57642020000300248Revistahttp://www.demneuropsy.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||demneuropsy@uol.com.br1980-57641980-5764opendoar:2020-09-15T00:00Dementia & Neuropsychologia - Associação de Neurologia Cognitiva e do Comportamento (ANCC)false
dc.title.none.fl_str_mv Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
title Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
spellingShingle Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
Parfenov,Vladimir Anatolevich
cognition
dementia
cognitive dysfunction
aging
Alzheimer disease.
title_short Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
title_full Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
title_fullStr Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
title_full_unstemmed Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
title_sort Subjective cognitive decline as a predictor of future cognitive decline: a systematic review
author Parfenov,Vladimir Anatolevich
author_facet Parfenov,Vladimir Anatolevich
Zakharov,Vladimir Vladimirovich
Kabaeva,Anastasia Romanovna
Vakhnina,Natalya Vasilyevna
author_role author
author2 Zakharov,Vladimir Vladimirovich
Kabaeva,Anastasia Romanovna
Vakhnina,Natalya Vasilyevna
author2_role author
author
author
dc.contributor.author.fl_str_mv Parfenov,Vladimir Anatolevich
Zakharov,Vladimir Vladimirovich
Kabaeva,Anastasia Romanovna
Vakhnina,Natalya Vasilyevna
dc.subject.por.fl_str_mv cognition
dementia
cognitive dysfunction
aging
Alzheimer disease.
topic cognition
dementia
cognitive dysfunction
aging
Alzheimer disease.
description ABSTRACT. Over 44 million people suffer from dementia around the world. Researchers estimated that there will be 48.1 million people with dementia by 2020 and 90.3 million by 2040. In addition to dementia, mild cognitive impairment (MCI) and subjective cognitive decline (SCD) relate to cognitive impairment. It has been established that MCI precedes dementia, however the significance of SCD is still unclear. Recent studies suggest that SCD could be a risk factor for objective cognitive impairment. SCD is defined as а self-estimated decline in cognitive capacity in comparison to an individual’s previous level of functioning, which cannot be determined by neuropsychological tests. Objectives: To perform a systematic review of prospective longitudinal cohort studies that assessed the risk of MCI and dementia among people with SCD. Methods: A search was carried out for all available peer-reviewed articles in English related to SCD in PubMed and PsychINFO databases from database initiation through January 2020. The keywords used for the search were ‘subjective cognitive (or memory) impairment (or decline or complaints)’. Three authors separately determined the inclusion or exclusion of all articles retrieved for full-text evaluation. Results: The chance of progression to dementia in the SCD group was 2.17 (95% confidence interval [95%CI] 1.53‒3.07; p<0.05) compared to normal aging. Furthermore, the SCD group was 2.15 times more likely to progress to MCI than the group without SCD (95%CI 1.39‒3.30; p=0.005). Conclusions: SCD might precede cognitive impairment, however, more detailed longitudinal studies should be conducted.
publishDate 2020
dc.date.none.fl_str_mv 2020-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642020000300248
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642020000300248
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-57642020dn14-030007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento
publisher.none.fl_str_mv Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento
dc.source.none.fl_str_mv Dementia &amp; Neuropsychologia v.14 n.3 2020
reponame:Dementia & Neuropsychologia
instname:Associação de Neurologia Cognitiva e do Comportamento (ANCC)
instacron:ANCC
instname_str Associação de Neurologia Cognitiva e do Comportamento (ANCC)
instacron_str ANCC
institution ANCC
reponame_str Dementia & Neuropsychologia
collection Dementia & Neuropsychologia
repository.name.fl_str_mv Dementia & Neuropsychologia - Associação de Neurologia Cognitiva e do Comportamento (ANCC)
repository.mail.fl_str_mv ||demneuropsy@uol.com.br
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