TY - JOUR
T1 - Serum insulin-like growth factor 1 and late-life depression: A population-based study
AU - van Varsseveld, N.C.
AU - van Bunderen, C.C.
AU - Sohl, E.
AU - Comijs, H.C.
AU - Penninx, B.W.J.H.
AU - Lips, P.
AU - Drent, M.L.
PY - 2015
Y1 - 2015
N2 - Objective: Serum insulin-like growth factor 1 (IGF-1) concentration decreases, while the prevalence of depressive symptoms increases with advancing age. Although basic research indicates a link between low IGF-1 concentration and depression, this has scarcely been investigated in humans. This study investigates whether lower IGF-1 concentrations are associated with prevalent and incident late-life depression over a 3-year period. Methods: The study included 1188 participants, aged ≥65 years, from the Longitudinal Aging Study Amsterdam (LASA), an ongoing, population-based cohort study. Depression was assessed at baseline and after three years using the Center for Epidemiological Studies-Depression Scale (CES-D) and the Diagnostic Interview Schedule (DIS), and categorized into minor depression and major depression (MDD). Serum IGF-1 concentration was determined at baseline. Associations were adjusted for relevant confounders. Results: Serum IGF-1 concentrations were within the normal range (mean 13.9. nmol/l, standard deviation 5.3. nmol/l). At baseline, in men, as compared to high concentrations, mid concentrations decreased the probability of prevalent minor depression (odds ratio [OR]. =. 0.35, 95% confidence interval [CI]. =. 0.15-0.82). In women, as compared to high concentrations, low concentrations tended to increase the probability of prevalent MDD (OR. =. 2.66, 95% CI. =. 0.89-7.89).At three-year follow-up, in men, no significant prospective associations were detected. In women, as compared to high concentrations, mid concentrations decreased the probability of incident minor depression (OR. =. 0.43, 95% CI. =. 0.19-0.95). Conclusions: Several associations, which differed across the genders, were observed between IGF-1 and depression. Cross-sectional findings were not supported by longitudinal findings, which suggest that IGF-1 may not play an important predictive role in the development of depression in older persons over time. However, a more acute role of IGF-1 in current depression, as indicated by the cross-sectional results, may be possible. Further studies are needed to elucidate the complex relation between IGF-1 and late-life depression.
AB - Objective: Serum insulin-like growth factor 1 (IGF-1) concentration decreases, while the prevalence of depressive symptoms increases with advancing age. Although basic research indicates a link between low IGF-1 concentration and depression, this has scarcely been investigated in humans. This study investigates whether lower IGF-1 concentrations are associated with prevalent and incident late-life depression over a 3-year period. Methods: The study included 1188 participants, aged ≥65 years, from the Longitudinal Aging Study Amsterdam (LASA), an ongoing, population-based cohort study. Depression was assessed at baseline and after three years using the Center for Epidemiological Studies-Depression Scale (CES-D) and the Diagnostic Interview Schedule (DIS), and categorized into minor depression and major depression (MDD). Serum IGF-1 concentration was determined at baseline. Associations were adjusted for relevant confounders. Results: Serum IGF-1 concentrations were within the normal range (mean 13.9. nmol/l, standard deviation 5.3. nmol/l). At baseline, in men, as compared to high concentrations, mid concentrations decreased the probability of prevalent minor depression (odds ratio [OR]. =. 0.35, 95% confidence interval [CI]. =. 0.15-0.82). In women, as compared to high concentrations, low concentrations tended to increase the probability of prevalent MDD (OR. =. 2.66, 95% CI. =. 0.89-7.89).At three-year follow-up, in men, no significant prospective associations were detected. In women, as compared to high concentrations, mid concentrations decreased the probability of incident minor depression (OR. =. 0.43, 95% CI. =. 0.19-0.95). Conclusions: Several associations, which differed across the genders, were observed between IGF-1 and depression. Cross-sectional findings were not supported by longitudinal findings, which suggest that IGF-1 may not play an important predictive role in the development of depression in older persons over time. However, a more acute role of IGF-1 in current depression, as indicated by the cross-sectional results, may be possible. Further studies are needed to elucidate the complex relation between IGF-1 and late-life depression.
U2 - 10.1016/j.psyneuen.2015.01.014
DO - 10.1016/j.psyneuen.2015.01.014
M3 - Article
SN - 0306-4530
VL - 54
SP - 31
EP - 40
JO - Psychoneuroendocrinology
JF - Psychoneuroendocrinology
ER -
