Neural correlates of exceptional memory ability in SuperAgers: A multimodal approach using FDG-PET, PIB-PET, and MRI

Wyllians Vendramini Borelli, Eduardo Leal-Conceição, Michele Alberton Andrade, Nathalia Bianchini Esper, Paula Kopschina Feltes, Ricardo Bernardi Soder, Cristina Sebastião Matushita, Louise Mross Hartmann, Graciane Radaelli, Lucas Porcello Schilling, Cristina Moriguchi-Jeckel, Ana Maria Marques da Silva, Mirna Wetters Portuguez, Alexandre Rosa Franco, Jaderson Costa da Costa

    Research output: Contribution to journalArticleAcademic

    Abstract

    Individuals at 80 years of age or above with exceptional memory are considered SuperAgers (SA). A multimodal brain analysis of SA may provide biomarkers of successful cognitive aging. Herein, a molecular (PET-FDG, PET-PIB), functional (fMRI) and structural analysis (MRI) of SA was conducted. Ten SA, ten age-matched older adults (C80) and ten cognitively normal middle-aged adults underwent cognitive testing and neuroimaging examinations. The relationship between cognitive scores and cingulate areas and hippocampus were examined. The SA group showed increased FDG SUVr in the left subgenual Anterior Cingulate Cortex (sACC, p0.05). These results support the key role of ACC in SA, even in the presence of amyloid deposition. It also suggests that sACC can be used as a potential memory biomarker in older adults.
    Original languageEnglish
    Pages (from-to)666438
    JournalbioRxiv
    DOIs
    Publication statusPublished - 2019

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