TY - JOUR
T1 - Anxiety in late-life depression
T2 - Associations with brain volume, amyloid beta, white matter lesions, cognition, and functional ability
AU - Kryza-Lacombe, Maria
AU - Kassel, Michelle T.
AU - Insel, Philip S.
AU - Rhodes, Emma
AU - Bickford, David
AU - Burns, Emily
AU - Butters, Meryl A.
AU - Tosun, Duygu
AU - Aisen, Paul
AU - Raman, Rema
AU - Landau, Susan
AU - Saykin, Andrew J.
AU - Toga, Arthur W.
AU - Jack, Clifford R.
AU - Koeppe, Robert
AU - Weiner, Michael W.
AU - Nelson, Craig
AU - Mackin, R. Scott
N1 - Publisher Copyright:
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Psychogeriatric Association.
PY - 2024
Y1 - 2024
N2 - Objectives: Late-life depression (LLD) is common and frequently co-occurs with neurodegenerative diseases of aging. Little is known about how heterogeneity within LLD relates to factors typically associated with neurodegeneration. Varying levels of anxiety are one source of heterogeneity in LLD. We examined associations between anxiety symptom severity and factors associated with neurodegeneration, including regional brain volumes, amyloid beta (Aβ) deposition, white matter disease, cognitive dysfunction, and functional ability in LLD. Participants and Measurements: Older adults with major depression (N = 121, Ages 65-91) were evaluated for anxiety severity and the following: brain volume (orbitofrontal cortex [OFC], insula), cortical Aβ standardized uptake value ratio (SUVR), white matter hyperintensity (WMH) volume, global cognition, and functional ability. Separate linear regression analyses adjusting for age, sex, and concurrent depression severity were conducted to examine associations between anxiety and each of these factors. A global regression analysis was then conducted to examine the relative associations of these variables with anxiety severity. Results: Greater anxiety severity was associated with lower OFC volume (β = -68.25, t = -2.18, p =.031) and greater cognitive dysfunction (β = 0.23, t = 2.46, p =.016). Anxiety severity was not associated with insula volume, Aβ SUVR, WMH, or functional ability. When examining the relative associations of cognitive functioning and OFC volume with anxiety in a global model, cognitive dysfunction (β = 0.24, t = 2.62, p =.010), but not OFC volume, remained significantly associated with anxiety. Conclusions: Among multiple factors typically associated with neurodegeneration, cognitive dysfunction stands out as a key factor associated with anxiety severity in LLD which has implications for cognitive and psychiatric interventions.
AB - Objectives: Late-life depression (LLD) is common and frequently co-occurs with neurodegenerative diseases of aging. Little is known about how heterogeneity within LLD relates to factors typically associated with neurodegeneration. Varying levels of anxiety are one source of heterogeneity in LLD. We examined associations between anxiety symptom severity and factors associated with neurodegeneration, including regional brain volumes, amyloid beta (Aβ) deposition, white matter disease, cognitive dysfunction, and functional ability in LLD. Participants and Measurements: Older adults with major depression (N = 121, Ages 65-91) were evaluated for anxiety severity and the following: brain volume (orbitofrontal cortex [OFC], insula), cortical Aβ standardized uptake value ratio (SUVR), white matter hyperintensity (WMH) volume, global cognition, and functional ability. Separate linear regression analyses adjusting for age, sex, and concurrent depression severity were conducted to examine associations between anxiety and each of these factors. A global regression analysis was then conducted to examine the relative associations of these variables with anxiety severity. Results: Greater anxiety severity was associated with lower OFC volume (β = -68.25, t = -2.18, p =.031) and greater cognitive dysfunction (β = 0.23, t = 2.46, p =.016). Anxiety severity was not associated with insula volume, Aβ SUVR, WMH, or functional ability. When examining the relative associations of cognitive functioning and OFC volume with anxiety in a global model, cognitive dysfunction (β = 0.24, t = 2.62, p =.010), but not OFC volume, remained significantly associated with anxiety. Conclusions: Among multiple factors typically associated with neurodegeneration, cognitive dysfunction stands out as a key factor associated with anxiety severity in LLD which has implications for cognitive and psychiatric interventions.
KW - Amyloid beta
KW - Anxiety
KW - Cognition
KW - Late-life depression
KW - gray matter volume
UR - http://www.scopus.com/inward/record.url?scp=85183478898&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85183478898&partnerID=8YFLogxK
U2 - 10.1017/S1041610224000012
DO - 10.1017/S1041610224000012
M3 - Article
C2 - 38268483
AN - SCOPUS:85183478898
SN - 1041-6102
JO - International psychogeriatrics
JF - International psychogeriatrics
ER -