Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration

Changes in hippocampal subfield volumes (HSV) along the Alzheimer's disease (AD) continuum have been scarcely investigated to date in elderly subjects classified based on the presence of β‐amyloid aggregation and signs of neurodegeneration. We classified patients (either sex) with mild dementia...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of neuroscience research 2021-02, Vol.99 (2), p.481-501
Hauptverfasser: Busatto Filho, Geraldo, Duran, Fabio Luiz de Souza, Squarzoni, Paula, Coutinho, Artur Martins Novaes, Rosa, Pedro Gomes Penteado, Torralbo, Leticia, Pachi, Clarice Gameiro da Fonseca, Costa, Naomi Antunes, Porto, Fabio Henrique de Gobbi, Carvalho, Cleudiana Lima, Brucki, Sonia Maria Dozzi, Nitrini, Ricardo, Forlenza, Orestes Vicente, Leite, Claudia da Costa, Buchpiguel, Carlos Alberto, Paula Faria, Daniele
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 501
container_issue 2
container_start_page 481
container_title Journal of neuroscience research
container_volume 99
creator Busatto Filho, Geraldo
Duran, Fabio Luiz de Souza
Squarzoni, Paula
Coutinho, Artur Martins Novaes
Rosa, Pedro Gomes Penteado
Torralbo, Leticia
Pachi, Clarice Gameiro da Fonseca
Costa, Naomi Antunes
Porto, Fabio Henrique de Gobbi
Carvalho, Cleudiana Lima
Brucki, Sonia Maria Dozzi
Nitrini, Ricardo
Forlenza, Orestes Vicente
Leite, Claudia da Costa
Buchpiguel, Carlos Alberto
Paula Faria, Daniele
description Changes in hippocampal subfield volumes (HSV) along the Alzheimer's disease (AD) continuum have been scarcely investigated to date in elderly subjects classified based on the presence of β‐amyloid aggregation and signs of neurodegeneration. We classified patients (either sex) with mild dementia compatible with AD (n = 35) or amnestic mild cognitive impairment (n = 39), and cognitively unimpaired subjects (either sex; n = 26) using [11C]PIB‐PET to assess β‐amyloid aggregation (A+) and [18F]FDG‐PET to account for neurodegeneration ((N)+). Magnetic resonance imaging‐based automated methods were used for HSV and white matter hyperintensity (WMH) measurements. Significant HSV reductions were found in A+(N)+ subjects in the presubiculum/subiculum complex and molecular layer, related to worse memory performance. In both the A+(N)+ and A+(N)− categories, subicular volumes were inversely correlated with the degree of Aβ deposition. The A−(N)+ subgroup showed reduced HSV relative to the A−(N)− subgroup also in the subiculum/presubiculum. Combining all (N)− subjects, HSV were lower in subjects presenting significant cognitive decline irrespective of A+/A− classification (controlling for WMH load); these between‐group differences were detected again in the presubiculum, but also involved the CA4 and granular layer. These findings demonstrate that differential HSV reductions are detectable both in (N)+ and (N)− categories along the AD continuum, and are directly related to the severity of cognitive deficits. HSV reductions are larger both in A+(N)+ and A+(N)− subjects in direct proportion to the degree of Aβ deposition. The meaningful HSV reductions detected in the A−(N)+ subgroup highlights the strength of biomarker‐based classifications outside of the classical AD continuum. Volume of hippocampal subregions (presubiculum/subiculum) are reduced in elderly subjects presenting cortical β‐amyloid deposition and signs of neurodegeneration. In elderly subjects with no neurodegeneration, hippocampal subregional volumes are also reduced in those with cognitive decline (dementia or amnestic mild cognitive impairment) compared to cognitively intact individuals.
doi_str_mv 10.1002/jnr.24739
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2452094504</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2452094504</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3539-503027a1825bf2d6bc7de48d2a52ef4fc320640888609d9c8d0b6ea1a713b33f3</originalsourceid><addsrcrecordid>eNp1kUtuFDEQhi0EIsPAggsgSywCi07Kj34toygQUAQSgnXLbVf3eHC3G3saNFlxBE7CgoNwCE6COxNYILFyyfXpk-r_CXnM4IQB8NPtGE64LEV9h6wY1GUmc1neJSsQBWQSGD8iD2LcAkBd5-I-ORICSiEqsSLfL-00ea2GSTka5zZgb_2Y5s_ezQNSvVFjj5HakaIzGCLVTsVoO4uGztGOPZ18tLvgEzDYtEnDzg--D2ra7H99_daqmNAzd71BO2A4jrS1flDh4yLzHf35I0Fq2DtvDTV4Y1skajR0xDl4gz2OGNTy-5Dc65SL-Oj2XZMPLy7en19mV29fvjo_u8q0yEWd5SCAl4pVPG87bopWlwZlZbjKOXay04JDIaGqqgJqU-vKQFugYqpkohWiE2vy7OCdgv80Y9w16TaNzqkR_RwbLnMOtcxBJvTpP-jWzyFFuFAlYyVnKes1eX6gdPAxBuyaKdiUwr5h0CwlNqnE5qbExD65Nc7tgOYv-ae1BJwegC_W4f7_pub1m3cH5W9tgq1e</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2471172173</pqid></control><display><type>article</type><title>Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration</title><source>Access via Wiley Online Library</source><creator>Busatto Filho, Geraldo ; Duran, Fabio Luiz de Souza ; Squarzoni, Paula ; Coutinho, Artur Martins Novaes ; Rosa, Pedro Gomes Penteado ; Torralbo, Leticia ; Pachi, Clarice Gameiro da Fonseca ; Costa, Naomi Antunes ; Porto, Fabio Henrique de Gobbi ; Carvalho, Cleudiana Lima ; Brucki, Sonia Maria Dozzi ; Nitrini, Ricardo ; Forlenza, Orestes Vicente ; Leite, Claudia da Costa ; Buchpiguel, Carlos Alberto ; Paula Faria, Daniele</creator><creatorcontrib>Busatto Filho, Geraldo ; Duran, Fabio Luiz de Souza ; Squarzoni, Paula ; Coutinho, Artur Martins Novaes ; Rosa, Pedro Gomes Penteado ; Torralbo, Leticia ; Pachi, Clarice Gameiro da Fonseca ; Costa, Naomi Antunes ; Porto, Fabio Henrique de Gobbi ; Carvalho, Cleudiana Lima ; Brucki, Sonia Maria Dozzi ; Nitrini, Ricardo ; Forlenza, Orestes Vicente ; Leite, Claudia da Costa ; Buchpiguel, Carlos Alberto ; Paula Faria, Daniele</creatorcontrib><description>Changes in hippocampal subfield volumes (HSV) along the Alzheimer's disease (AD) continuum have been scarcely investigated to date in elderly subjects classified based on the presence of β‐amyloid aggregation and signs of neurodegeneration. We classified patients (either sex) with mild dementia compatible with AD (n = 35) or amnestic mild cognitive impairment (n = 39), and cognitively unimpaired subjects (either sex; n = 26) using [11C]PIB‐PET to assess β‐amyloid aggregation (A+) and [18F]FDG‐PET to account for neurodegeneration ((N)+). Magnetic resonance imaging‐based automated methods were used for HSV and white matter hyperintensity (WMH) measurements. Significant HSV reductions were found in A+(N)+ subjects in the presubiculum/subiculum complex and molecular layer, related to worse memory performance. In both the A+(N)+ and A+(N)− categories, subicular volumes were inversely correlated with the degree of Aβ deposition. The A−(N)+ subgroup showed reduced HSV relative to the A−(N)− subgroup also in the subiculum/presubiculum. Combining all (N)− subjects, HSV were lower in subjects presenting significant cognitive decline irrespective of A+/A− classification (controlling for WMH load); these between‐group differences were detected again in the presubiculum, but also involved the CA4 and granular layer. These findings demonstrate that differential HSV reductions are detectable both in (N)+ and (N)− categories along the AD continuum, and are directly related to the severity of cognitive deficits. HSV reductions are larger both in A+(N)+ and A+(N)− subjects in direct proportion to the degree of Aβ deposition. The meaningful HSV reductions detected in the A−(N)+ subgroup highlights the strength of biomarker‐based classifications outside of the classical AD continuum. Volume of hippocampal subregions (presubiculum/subiculum) are reduced in elderly subjects presenting cortical β‐amyloid deposition and signs of neurodegeneration. In elderly subjects with no neurodegeneration, hippocampal subregional volumes are also reduced in those with cognitive decline (dementia or amnestic mild cognitive impairment) compared to cognitively intact individuals.</description><identifier>ISSN: 0360-4012</identifier><identifier>EISSN: 1097-4547</identifier><identifier>DOI: 10.1002/jnr.24739</identifier><identifier>PMID: 33073383</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>Agglomeration ; Alzheimer's disease ; Automation ; Biomarkers ; Cognitive ability ; cognitive impairment ; Dementia disorders ; Deposition ; Hippocampus ; hippocampus subfields ; Magnetic resonance imaging ; MRI ; Neurodegeneration ; Neurodegenerative diseases ; NIA‐AA research framework ; Older people ; PET imaging ; Positron emission ; Positron emission tomography ; Presubiculum ; Sex ; Subgroups ; Subiculum ; Substantia alba ; Tomography</subject><ispartof>Journal of neuroscience research, 2021-02, Vol.99 (2), p.481-501</ispartof><rights>2020 Wiley Periodicals LLC</rights><rights>2020 Wiley Periodicals LLC.</rights><rights>2021 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3539-503027a1825bf2d6bc7de48d2a52ef4fc320640888609d9c8d0b6ea1a713b33f3</citedby><cites>FETCH-LOGICAL-c3539-503027a1825bf2d6bc7de48d2a52ef4fc320640888609d9c8d0b6ea1a713b33f3</cites><orcidid>0000-0002-1766-2786</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjnr.24739$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjnr.24739$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33073383$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Busatto Filho, Geraldo</creatorcontrib><creatorcontrib>Duran, Fabio Luiz de Souza</creatorcontrib><creatorcontrib>Squarzoni, Paula</creatorcontrib><creatorcontrib>Coutinho, Artur Martins Novaes</creatorcontrib><creatorcontrib>Rosa, Pedro Gomes Penteado</creatorcontrib><creatorcontrib>Torralbo, Leticia</creatorcontrib><creatorcontrib>Pachi, Clarice Gameiro da Fonseca</creatorcontrib><creatorcontrib>Costa, Naomi Antunes</creatorcontrib><creatorcontrib>Porto, Fabio Henrique de Gobbi</creatorcontrib><creatorcontrib>Carvalho, Cleudiana Lima</creatorcontrib><creatorcontrib>Brucki, Sonia Maria Dozzi</creatorcontrib><creatorcontrib>Nitrini, Ricardo</creatorcontrib><creatorcontrib>Forlenza, Orestes Vicente</creatorcontrib><creatorcontrib>Leite, Claudia da Costa</creatorcontrib><creatorcontrib>Buchpiguel, Carlos Alberto</creatorcontrib><creatorcontrib>Paula Faria, Daniele</creatorcontrib><title>Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration</title><title>Journal of neuroscience research</title><addtitle>J Neurosci Res</addtitle><description>Changes in hippocampal subfield volumes (HSV) along the Alzheimer's disease (AD) continuum have been scarcely investigated to date in elderly subjects classified based on the presence of β‐amyloid aggregation and signs of neurodegeneration. We classified patients (either sex) with mild dementia compatible with AD (n = 35) or amnestic mild cognitive impairment (n = 39), and cognitively unimpaired subjects (either sex; n = 26) using [11C]PIB‐PET to assess β‐amyloid aggregation (A+) and [18F]FDG‐PET to account for neurodegeneration ((N)+). Magnetic resonance imaging‐based automated methods were used for HSV and white matter hyperintensity (WMH) measurements. Significant HSV reductions were found in A+(N)+ subjects in the presubiculum/subiculum complex and molecular layer, related to worse memory performance. In both the A+(N)+ and A+(N)− categories, subicular volumes were inversely correlated with the degree of Aβ deposition. The A−(N)+ subgroup showed reduced HSV relative to the A−(N)− subgroup also in the subiculum/presubiculum. Combining all (N)− subjects, HSV were lower in subjects presenting significant cognitive decline irrespective of A+/A− classification (controlling for WMH load); these between‐group differences were detected again in the presubiculum, but also involved the CA4 and granular layer. These findings demonstrate that differential HSV reductions are detectable both in (N)+ and (N)− categories along the AD continuum, and are directly related to the severity of cognitive deficits. HSV reductions are larger both in A+(N)+ and A+(N)− subjects in direct proportion to the degree of Aβ deposition. The meaningful HSV reductions detected in the A−(N)+ subgroup highlights the strength of biomarker‐based classifications outside of the classical AD continuum. Volume of hippocampal subregions (presubiculum/subiculum) are reduced in elderly subjects presenting cortical β‐amyloid deposition and signs of neurodegeneration. In elderly subjects with no neurodegeneration, hippocampal subregional volumes are also reduced in those with cognitive decline (dementia or amnestic mild cognitive impairment) compared to cognitively intact individuals.</description><subject>Agglomeration</subject><subject>Alzheimer's disease</subject><subject>Automation</subject><subject>Biomarkers</subject><subject>Cognitive ability</subject><subject>cognitive impairment</subject><subject>Dementia disorders</subject><subject>Deposition</subject><subject>Hippocampus</subject><subject>hippocampus subfields</subject><subject>Magnetic resonance imaging</subject><subject>MRI</subject><subject>Neurodegeneration</subject><subject>Neurodegenerative diseases</subject><subject>NIA‐AA research framework</subject><subject>Older people</subject><subject>PET imaging</subject><subject>Positron emission</subject><subject>Positron emission tomography</subject><subject>Presubiculum</subject><subject>Sex</subject><subject>Subgroups</subject><subject>Subiculum</subject><subject>Substantia alba</subject><subject>Tomography</subject><issn>0360-4012</issn><issn>1097-4547</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kUtuFDEQhi0EIsPAggsgSywCi07Kj34toygQUAQSgnXLbVf3eHC3G3saNFlxBE7CgoNwCE6COxNYILFyyfXpk-r_CXnM4IQB8NPtGE64LEV9h6wY1GUmc1neJSsQBWQSGD8iD2LcAkBd5-I-ORICSiEqsSLfL-00ea2GSTka5zZgb_2Y5s_ezQNSvVFjj5HakaIzGCLVTsVoO4uGztGOPZ18tLvgEzDYtEnDzg--D2ra7H99_daqmNAzd71BO2A4jrS1flDh4yLzHf35I0Fq2DtvDTV4Y1skajR0xDl4gz2OGNTy-5Dc65SL-Oj2XZMPLy7en19mV29fvjo_u8q0yEWd5SCAl4pVPG87bopWlwZlZbjKOXay04JDIaGqqgJqU-vKQFugYqpkohWiE2vy7OCdgv80Y9w16TaNzqkR_RwbLnMOtcxBJvTpP-jWzyFFuFAlYyVnKes1eX6gdPAxBuyaKdiUwr5h0CwlNqnE5qbExD65Nc7tgOYv-ae1BJwegC_W4f7_pub1m3cH5W9tgq1e</recordid><startdate>202102</startdate><enddate>202102</enddate><creator>Busatto Filho, Geraldo</creator><creator>Duran, Fabio Luiz de Souza</creator><creator>Squarzoni, Paula</creator><creator>Coutinho, Artur Martins Novaes</creator><creator>Rosa, Pedro Gomes Penteado</creator><creator>Torralbo, Leticia</creator><creator>Pachi, Clarice Gameiro da Fonseca</creator><creator>Costa, Naomi Antunes</creator><creator>Porto, Fabio Henrique de Gobbi</creator><creator>Carvalho, Cleudiana Lima</creator><creator>Brucki, Sonia Maria Dozzi</creator><creator>Nitrini, Ricardo</creator><creator>Forlenza, Orestes Vicente</creator><creator>Leite, Claudia da Costa</creator><creator>Buchpiguel, Carlos Alberto</creator><creator>Paula Faria, Daniele</creator><general>Wiley Subscription Services, Inc</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7QP</scope><scope>7QR</scope><scope>7TK</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-1766-2786</orcidid></search><sort><creationdate>202102</creationdate><title>Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration</title><author>Busatto Filho, Geraldo ; Duran, Fabio Luiz de Souza ; Squarzoni, Paula ; Coutinho, Artur Martins Novaes ; Rosa, Pedro Gomes Penteado ; Torralbo, Leticia ; Pachi, Clarice Gameiro da Fonseca ; Costa, Naomi Antunes ; Porto, Fabio Henrique de Gobbi ; Carvalho, Cleudiana Lima ; Brucki, Sonia Maria Dozzi ; Nitrini, Ricardo ; Forlenza, Orestes Vicente ; Leite, Claudia da Costa ; Buchpiguel, Carlos Alberto ; Paula Faria, Daniele</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3539-503027a1825bf2d6bc7de48d2a52ef4fc320640888609d9c8d0b6ea1a713b33f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Agglomeration</topic><topic>Alzheimer's disease</topic><topic>Automation</topic><topic>Biomarkers</topic><topic>Cognitive ability</topic><topic>cognitive impairment</topic><topic>Dementia disorders</topic><topic>Deposition</topic><topic>Hippocampus</topic><topic>hippocampus subfields</topic><topic>Magnetic resonance imaging</topic><topic>MRI</topic><topic>Neurodegeneration</topic><topic>Neurodegenerative diseases</topic><topic>NIA‐AA research framework</topic><topic>Older people</topic><topic>PET imaging</topic><topic>Positron emission</topic><topic>Positron emission tomography</topic><topic>Presubiculum</topic><topic>Sex</topic><topic>Subgroups</topic><topic>Subiculum</topic><topic>Substantia alba</topic><topic>Tomography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Busatto Filho, Geraldo</creatorcontrib><creatorcontrib>Duran, Fabio Luiz de Souza</creatorcontrib><creatorcontrib>Squarzoni, Paula</creatorcontrib><creatorcontrib>Coutinho, Artur Martins Novaes</creatorcontrib><creatorcontrib>Rosa, Pedro Gomes Penteado</creatorcontrib><creatorcontrib>Torralbo, Leticia</creatorcontrib><creatorcontrib>Pachi, Clarice Gameiro da Fonseca</creatorcontrib><creatorcontrib>Costa, Naomi Antunes</creatorcontrib><creatorcontrib>Porto, Fabio Henrique de Gobbi</creatorcontrib><creatorcontrib>Carvalho, Cleudiana Lima</creatorcontrib><creatorcontrib>Brucki, Sonia Maria Dozzi</creatorcontrib><creatorcontrib>Nitrini, Ricardo</creatorcontrib><creatorcontrib>Forlenza, Orestes Vicente</creatorcontrib><creatorcontrib>Leite, Claudia da Costa</creatorcontrib><creatorcontrib>Buchpiguel, Carlos Alberto</creatorcontrib><creatorcontrib>Paula Faria, Daniele</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Calcium &amp; Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of neuroscience research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Busatto Filho, Geraldo</au><au>Duran, Fabio Luiz de Souza</au><au>Squarzoni, Paula</au><au>Coutinho, Artur Martins Novaes</au><au>Rosa, Pedro Gomes Penteado</au><au>Torralbo, Leticia</au><au>Pachi, Clarice Gameiro da Fonseca</au><au>Costa, Naomi Antunes</au><au>Porto, Fabio Henrique de Gobbi</au><au>Carvalho, Cleudiana Lima</au><au>Brucki, Sonia Maria Dozzi</au><au>Nitrini, Ricardo</au><au>Forlenza, Orestes Vicente</au><au>Leite, Claudia da Costa</au><au>Buchpiguel, Carlos Alberto</au><au>Paula Faria, Daniele</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration</atitle><jtitle>Journal of neuroscience research</jtitle><addtitle>J Neurosci Res</addtitle><date>2021-02</date><risdate>2021</risdate><volume>99</volume><issue>2</issue><spage>481</spage><epage>501</epage><pages>481-501</pages><issn>0360-4012</issn><eissn>1097-4547</eissn><abstract>Changes in hippocampal subfield volumes (HSV) along the Alzheimer's disease (AD) continuum have been scarcely investigated to date in elderly subjects classified based on the presence of β‐amyloid aggregation and signs of neurodegeneration. We classified patients (either sex) with mild dementia compatible with AD (n = 35) or amnestic mild cognitive impairment (n = 39), and cognitively unimpaired subjects (either sex; n = 26) using [11C]PIB‐PET to assess β‐amyloid aggregation (A+) and [18F]FDG‐PET to account for neurodegeneration ((N)+). Magnetic resonance imaging‐based automated methods were used for HSV and white matter hyperintensity (WMH) measurements. Significant HSV reductions were found in A+(N)+ subjects in the presubiculum/subiculum complex and molecular layer, related to worse memory performance. In both the A+(N)+ and A+(N)− categories, subicular volumes were inversely correlated with the degree of Aβ deposition. The A−(N)+ subgroup showed reduced HSV relative to the A−(N)− subgroup also in the subiculum/presubiculum. Combining all (N)− subjects, HSV were lower in subjects presenting significant cognitive decline irrespective of A+/A− classification (controlling for WMH load); these between‐group differences were detected again in the presubiculum, but also involved the CA4 and granular layer. These findings demonstrate that differential HSV reductions are detectable both in (N)+ and (N)− categories along the AD continuum, and are directly related to the severity of cognitive deficits. HSV reductions are larger both in A+(N)+ and A+(N)− subjects in direct proportion to the degree of Aβ deposition. The meaningful HSV reductions detected in the A−(N)+ subgroup highlights the strength of biomarker‐based classifications outside of the classical AD continuum. Volume of hippocampal subregions (presubiculum/subiculum) are reduced in elderly subjects presenting cortical β‐amyloid deposition and signs of neurodegeneration. In elderly subjects with no neurodegeneration, hippocampal subregional volumes are also reduced in those with cognitive decline (dementia or amnestic mild cognitive impairment) compared to cognitively intact individuals.</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>33073383</pmid><doi>10.1002/jnr.24739</doi><tpages>0</tpages><orcidid>https://orcid.org/0000-0002-1766-2786</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0360-4012
ispartof Journal of neuroscience research, 2021-02, Vol.99 (2), p.481-501
issn 0360-4012
1097-4547
language eng
recordid cdi_proquest_miscellaneous_2452094504
source Access via Wiley Online Library
subjects Agglomeration
Alzheimer's disease
Automation
Biomarkers
Cognitive ability
cognitive impairment
Dementia disorders
Deposition
Hippocampus
hippocampus subfields
Magnetic resonance imaging
MRI
Neurodegeneration
Neurodegenerative diseases
NIA‐AA research framework
Older people
PET imaging
Positron emission
Positron emission tomography
Presubiculum
Sex
Subgroups
Subiculum
Substantia alba
Tomography
title Hippocampal subregional volume changes in elders classified using positron emission tomography‐based Alzheimer's biomarkers of β‐amyloid deposition and neurodegeneration
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-23T04%3A17%3A34IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Hippocampal%20subregional%20volume%20changes%20in%20elders%20classified%20using%20positron%20emission%20tomography%E2%80%90based%20Alzheimer's%20biomarkers%20of%20%CE%B2%E2%80%90amyloid%20deposition%20and%20neurodegeneration&rft.jtitle=Journal%20of%20neuroscience%20research&rft.au=Busatto%20Filho,%20Geraldo&rft.date=2021-02&rft.volume=99&rft.issue=2&rft.spage=481&rft.epage=501&rft.pages=481-501&rft.issn=0360-4012&rft.eissn=1097-4547&rft_id=info:doi/10.1002/jnr.24739&rft_dat=%3Cproquest_cross%3E2452094504%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2471172173&rft_id=info:pmid/33073383&rfr_iscdi=true