Abstract
Objectives: To examine the evolution of instrumental activity of daily living (IADL) performance according to the presence of brain amyloid deposition. Design: Longitudinal analysis of a randomized controlled trial. Setting: Neuroimaging ancillary study from the Multidomain Alzheimer Prevention Trial (MAPT). Participants: Community-dwelling individuals aged 70 and older without dementia (N = 269; 60% female, mean age 75±4). Measurements: Linear mixed models were used to assess the 36-month evolution of the performance of an IADL questionnaire for primary prevention studies in dementia, the Activity of Daily Living Prevention Instrument (ADL-PI), according to the presence of amyloid deposition using florbetapir positron emission tomography (PET) (standardized uptake value≥1.17). Additional analyses were also conducted to examine the changes in specific domains of daily functioning with and without adjustment for age, sex, apolipoprotein E, randomization group, and time between baseline and PET examination. Results: One hundred two (37.9%) participants were amyloid positive. Amyloid-negative participants had statistically significant improvement in ADL-PI total score between baseline and 36 months (p=.04). The difference after 3 years between amyloid-positive and -negative participants was not significant (β=–0.95±0.53 at 36 months, p=.08; adjusted models: β=–1.07±0.56, p=.06). Amyloid-negative participants also improved in memory-related IADLs (p<.001) throughout the study, unlike amyloid-positive participants. Conclusion: Amyloid-positive and -negative older adults are likely to have different trajectories in IADL performance. Future research is needed to better understand the relationship between amyloid plaques and functional limitations.
| Original language | English |
|---|---|
| Pages (from-to) | 1940-1947 |
| Journal | Journal of the American Geriatrics Society |
| Volume | 66 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2018 |
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Keywords
- Alzheimer's disease
- amyloid plaques
- IADL
- PET scanner
ASJC Scopus subject areas
- Geriatrics and Gerontology
Cite this
Relationship Between Brain Amyloid Deposition and Instrumental Activities of Daily Living in Older Adults : A Longitudinal Study from the Multidomain Alzheimer Prevention Trial. / and the MAPT/DSA study group.
In: Journal of the American Geriatrics Society, Vol. 66, No. 10, 2018, p. 1940-1947.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relationship Between Brain Amyloid Deposition and Instrumental Activities of Daily Living in Older Adults
T2 - A Longitudinal Study from the Multidomain Alzheimer Prevention Trial
AU - and the MAPT/DSA study group
AU - Lilamand, Matthieu
AU - Cesari, Matteo
AU - Cantet, Christelle
AU - Payoux, Pierre
AU - Andrieu, Sandrine
AU - Vellas, Bruno
PY - 2018
Y1 - 2018
N2 - Objectives: To examine the evolution of instrumental activity of daily living (IADL) performance according to the presence of brain amyloid deposition. Design: Longitudinal analysis of a randomized controlled trial. Setting: Neuroimaging ancillary study from the Multidomain Alzheimer Prevention Trial (MAPT). Participants: Community-dwelling individuals aged 70 and older without dementia (N = 269; 60% female, mean age 75±4). Measurements: Linear mixed models were used to assess the 36-month evolution of the performance of an IADL questionnaire for primary prevention studies in dementia, the Activity of Daily Living Prevention Instrument (ADL-PI), according to the presence of amyloid deposition using florbetapir positron emission tomography (PET) (standardized uptake value≥1.17). Additional analyses were also conducted to examine the changes in specific domains of daily functioning with and without adjustment for age, sex, apolipoprotein E, randomization group, and time between baseline and PET examination. Results: One hundred two (37.9%) participants were amyloid positive. Amyloid-negative participants had statistically significant improvement in ADL-PI total score between baseline and 36 months (p=.04). The difference after 3 years between amyloid-positive and -negative participants was not significant (β=–0.95±0.53 at 36 months, p=.08; adjusted models: β=–1.07±0.56, p=.06). Amyloid-negative participants also improved in memory-related IADLs (p<.001) throughout the study, unlike amyloid-positive participants. Conclusion: Amyloid-positive and -negative older adults are likely to have different trajectories in IADL performance. Future research is needed to better understand the relationship between amyloid plaques and functional limitations.
AB - Objectives: To examine the evolution of instrumental activity of daily living (IADL) performance according to the presence of brain amyloid deposition. Design: Longitudinal analysis of a randomized controlled trial. Setting: Neuroimaging ancillary study from the Multidomain Alzheimer Prevention Trial (MAPT). Participants: Community-dwelling individuals aged 70 and older without dementia (N = 269; 60% female, mean age 75±4). Measurements: Linear mixed models were used to assess the 36-month evolution of the performance of an IADL questionnaire for primary prevention studies in dementia, the Activity of Daily Living Prevention Instrument (ADL-PI), according to the presence of amyloid deposition using florbetapir positron emission tomography (PET) (standardized uptake value≥1.17). Additional analyses were also conducted to examine the changes in specific domains of daily functioning with and without adjustment for age, sex, apolipoprotein E, randomization group, and time between baseline and PET examination. Results: One hundred two (37.9%) participants were amyloid positive. Amyloid-negative participants had statistically significant improvement in ADL-PI total score between baseline and 36 months (p=.04). The difference after 3 years between amyloid-positive and -negative participants was not significant (β=–0.95±0.53 at 36 months, p=.08; adjusted models: β=–1.07±0.56, p=.06). Amyloid-negative participants also improved in memory-related IADLs (p<.001) throughout the study, unlike amyloid-positive participants. Conclusion: Amyloid-positive and -negative older adults are likely to have different trajectories in IADL performance. Future research is needed to better understand the relationship between amyloid plaques and functional limitations.
KW - Alzheimer's disease
KW - amyloid plaques
KW - IADL
KW - PET scanner
UR - http://www.scopus.com/inward/record.url?scp=85053373435&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053373435&partnerID=8YFLogxK
U2 - 10.1111/jgs.15497
DO - 10.1111/jgs.15497
M3 - Article
AN - SCOPUS:85053373435
VL - 66
SP - 1940
EP - 1947
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
SN - 0002-8614
IS - 10
ER -