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- Kern, Silke, et al.
(författare)
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Lower CSF interleukin-6 predicts future depression in a population-based sample of older women followed for 17 years
- 2013
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Ingår i: Brain Behavior and Immunity. - : Elsevier BV. - 0889-1591. ; 32, s. 153-158
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Tidskriftsartikel (refereegranskat)abstract
- Objective The literature regarding cerebrospinal fluid (CSF) cytokines in geriatric depression is sparse. The aim of this study was to examine associations between CSF interleukin-6 (IL-6) and related proinflammatory cytokines and current and future depression in a population-based sample of older women who were followed for 17 years. Methods 83 non-demented women aged 70–84 years who participated in the Prospective Population Study of Women in Gothenburg, Sweden took part in a lumbar puncture in 1992–3. CSF- IL-6, interleukin-1β (IL-1β), interleukin- 8 (IL-8) and tumor necrosis factor-α (TNF-α) were measured. Psychiatric symptoms were rated with the Comprehensive Psychopathological Rating Scale at baseline and at three subsequent face-to-face examinations. Depression (major or minor) was diagnosed in accordance with DSM-IV/DSM-IV research criteria. Results At baseline, women with ongoing depression had lower levels of IL-6 (p < 0.04), IL-8 (p < 0.05) and TNF-α (p < 0.05) compared with those without depression. In women without depression at baseline, lower CSF IL-6 levels predicted depression at one or more follow-up examination (p < 0.03). Results from the generalized linear mixed logistic model using all baseline and follow-up data on depression status and Mini Mental State Examination score showed a significant relationship between IL-6 and depression (p = 0.005 OR 0.370 CI [0.184–0.744]). Conclusion Lower levels of CSF IL-6 were associated with current depression and with future depression during a follow-up of almost two decades. Our findings suggest that lower levels of CSF IL-6 may be related to depression vulnerability in later life.
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- Johansson, Lena, 1972, et al.
(författare)
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Midlife Stress in Relation to Late-Life Cerebrospinal Fluid Biomarkers of Alzheimer's Disease: A 25-Year Follow-Up Study
- 2018
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Ingår i: Dementia and geriatric cognitive disorders. - : S. Karger AG. - 1421-9824 .- 1420-8008. ; 46:1-2, s. 90-99
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Tidskriftsartikel (refereegranskat)abstract
- <b><i>Background/Aims:</i></b> Psychological stress has previously been associated with higher risk of developing late-life dementia, especially Alzheimer’s disease (AD). This study tested whether longstanding midlife stress is related to cerebrospinal fluid (CSF) biomarkers of late-life AD, such as tau protein and amyloid beta (Aβ). <b><i>Methods:</i></b> The study included 79 nondemented females from the Prospective Population Study of Women in Gothenburg, Sweden, who responded to a standardized stress question at baseline (mean age 49 years) and underwent a lumbar puncture at follow-up 25 years later. Multiple linear regression models analyzed the relationships between midlife psychological stress and late-life CSF measures of total tau (t-tau), phosphorylated tau (p-tau), Aβ40, and Aβ42. <b><i>Results:</i></b> Longstanding stress in midlife was associated with higher levels of CSF t-tau (β = 0.64, <i>p</i> = 0.01) and Aβ40 (β = 0.60, <i>p</i> = 0.02) in late life. No associations were found between midlife stress and levels of p-tau or Aβ42. <b><i>Conclusion:</i></b> The findings suggest that longstanding stress stimulates unspecific neurodegenerative processes, but not the core processes of AD, at least not in the early phase of the disease. The association with higher concentration of CSF t-tau may reflect neural degeneration and the association with higher Aβ40 may be an early sign of Aβ overproduction or cerebrovascular processes in the brain.
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