Neuroinflammatory and morphological changes in late-life depression: the NIMROD study.
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Peer-reviewed
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Abstract
We studied neuroinflammation in individuals with late-life depression, as a risk factor for dementia, using [11C]PK11195 positron emission tomography (PET). Five older participants with major depression and 13 controls underwent PET and multimodal 3T magnetic resonance imaging (MRI), with blood taken to measure C-reactive protein (CRP). We found significantly higher CRP levels in those with late-life depression and raised [11C]PK11195 binding compared with controls in brain regions associated with depression, including subgenual anterior cingulate cortex, and significant hippocampal subfield atrophy in cornu ammonis 1 and subiculum. Our findings suggest neuroinflammation requires further investigation in late-life depression, both as a possible aetiological factor and a potential therapeutic target.
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1472-1465
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Medical Research Council (MC_U105597119)
Wellcome Trust (103838/Z/14/Z)
Wellcome Trust (093875/Z/10/Z)
Medical Research Council (MR/M024873/1)