Frontiers in Aging Neuroscience (Jul 2023)

Virtual brain simulations reveal network-specific parameters in neurodegenerative dementias

  • Anita Monteverdi,
  • Fulvia Palesi,
  • Michael Schirner,
  • Michael Schirner,
  • Michael Schirner,
  • Michael Schirner,
  • Michael Schirner,
  • Francesca Argentino,
  • Mariateresa Merante,
  • Alberto Redolfi,
  • Francesca Conca,
  • Laura Mazzocchi,
  • Stefano F. Cappa,
  • Stefano F. Cappa,
  • Matteo Cotta Ramusino,
  • Alfredo Costa,
  • Alfredo Costa,
  • Anna Pichiecchio,
  • Anna Pichiecchio,
  • Lisa M. Farina,
  • Viktor Jirsa,
  • Petra Ritter,
  • Petra Ritter,
  • Petra Ritter,
  • Petra Ritter,
  • Petra Ritter,
  • Claudia A. M. Gandini Wheeler-Kingshott,
  • Claudia A. M. Gandini Wheeler-Kingshott,
  • Claudia A. M. Gandini Wheeler-Kingshott,
  • Egidio D’Angelo,
  • Egidio D’Angelo

DOI
https://doi.org/10.3389/fnagi.2023.1204134
Journal volume & issue
Vol. 15

Abstract

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IntroductionNeural circuit alterations lay at the core of brain physiopathology, and yet are hard to unveil in living subjects. The Virtual Brain (TVB) modeling, by exploiting structural and functional magnetic resonance imaging (MRI), yields mesoscopic parameters of connectivity and synaptic transmission.MethodsWe used TVB to simulate brain networks, which are key for human brain function, in Alzheimer’s disease (AD) and frontotemporal dementia (FTD) patients, whose connectivity and synaptic parameters remain largely unknown; we then compared them to healthy controls, to reveal novel in vivo pathological hallmarks.ResultsThe pattern of simulated parameter differed between AD and FTD, shedding light on disease-specific alterations in brain networks. Individual subjects displayed subtle differences in network parameter patterns that significantly correlated with their individual neuropsychological, clinical, and pharmacological profiles.DiscussionThese TVB simulations, by informing about a new personalized set of networks parameters, open new perspectives for understanding dementias mechanisms and design personalized therapeutic approaches.

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