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Brain Macro-Structural Alterations in Aging Rats: A Longitudinal Lifetime Approach.
Gull, Sidra; Gaser, Christian; Herrmann, Karl-Heinz; Urbach, Anja; Boehme, Marcus; Afzal, Samia; Reichenbach, Jürgen R; Witte, Otto W; Schmidt, Silvio.
Afiliação
  • Gull S; Department of Neurology, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
  • Gaser C; Department of Neurology, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
  • Herrmann KH; Brain Imaging Center Jena, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
  • Urbach A; Department of Psychiatry and Psychotherapy, Jena University Hospital, Philosophenweg 3, D-07743 Jena, Germany.
  • Boehme M; Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Philosophenweg 3, D-07743 Jena, Germany.
  • Afzal S; Department of Neurology, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
  • Reichenbach JR; Jena Centre for Healthy Aging, Jena University Hospital, D-07747 Jena, Germany.
  • Witte OW; Department of Neurology, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
  • Schmidt S; Department of Neurology, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany.
Cells ; 12(3)2023 01 28.
Article em En | MEDLINE | ID: mdl-36766774
Aging is accompanied by macro-structural alterations in the brain that may relate to age-associated cognitive decline. Animal studies could allow us to study this relationship, but so far it remains unclear whether their structural aging patterns correspond to those in humans. Therefore, by applying magnetic resonance imaging (MRI) and deformation-based morphometry (DBM), we longitudinally screened the brains of male RccHan:WIST rats for structural changes across their average lifespan. By combining dedicated region of interest (ROI) and voxel-wise approaches, we observed an increase in their global brain volume that was superimposed by divergent local morphologic alterations, with the largest aging effects in early and middle life. We detected a modality-dependent vulnerability to shrinkage across the visual, auditory, and somato-sensory cortical areas, whereas the piriform cortex showed partial resistance. Furthermore, shrinkage emerged in the amygdala, subiculum, and flocculus as well as in frontal, parietal, and motor cortical areas. Strikingly, we noticed the preservation of ectorhinal, entorhinal, retrosplenial, and cingulate cortical regions, which all represent higher-order brain areas and extraordinarily grew with increasing age. We think that the findings of this study will further advance aging research and may contribute to the establishment of interventional approaches to preserve cognitive health in advanced age.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Encéfalo / Disfunção Cognitiva Tipo de estudo: Risk_factors_studies Limite: Animals / Humans / Male Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Encéfalo / Disfunção Cognitiva Tipo de estudo: Risk_factors_studies Limite: Animals / Humans / Male Idioma: En Ano de publicação: 2023 Tipo de documento: Article