JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Neuroinflammatory and morphological changes in late-life depression: the NIMROD study.

We studied neuroinflammation in individuals with late-life depression, as a risk factor for dementia, using [11 C]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 [11 C]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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