Person: Slachevsky Chonchol, Andrea
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Slachevsky Chonchol
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Andrea
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Andrea María Slachevsky Conchol
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Publication Allostatic-Interoceptive Overload in Frontotemporal Dementia(2022) Birba, Agustina; Santamaría-García, Hernando; Prado, Pavel; Cruzat, Josefina; Sainz Ballesteros , Agustín; Legaz , Agustina; Fittipaldi, Sol; Duran-Aniotz , Claudia; Slachevsky Chonchol, Andrea; Santibañez , Rodrigo; Sigman , Mariano; M. García , Adolfo; Whelan , Robert; Moguilner , Sebastián; Ibáñez , AgustínBackground : The predictive coding theory of allostatic-interoceptive load states that brain networks mediating autonomic regulation and interoceptive-exteroceptive balance regulate the internal milieu to anticipate future needs and environmental demands. These functions seem to be distinctly compromised in behavioral variant frontotemporal dementia (bvFTD), including alterations of the allostatic-interoceptive network (AIN). Here, we hypothesize that bvFTD is typified by an allostatic-interoceptive overload. Methods : We assessed resting-state heartbeat evoked potential (rsHEP) modulation as well as its behavioral and multimodal neuroimaging correlates in patients with bvFTD relative to healthy control subjects and patients with Alzheimer’s disease (N = 94). We measured 1) resting-state electroencephalography (to assess the rsHEP, prompted by visceral inputs and modulated by internal body sensing), 2) associations between rsHEP and its neural generators (source location), 3) cognitive disturbances (cognitive state, executive functions, facial emotion recognition), 4) brain atrophy, and 5) resting-state functional magnetic resonance imaging functional connectivity (AIN vs. control networks). Results : Relative to healthy control subjects and patients with Alzheimer’s disease, patients with bvFTD presented more negative rsHEP amplitudes with sources in critical hubs of the AIN (insula, amygdala, somatosensory cortex, hippocampus, anterior cingulate cortex). This exacerbated rsHEP modulation selectively predicted the patients’ cognitive profile (including cognitive decline, executive dysfunction, and emotional impairments). In addition, increased rsHEP modulation in bvFTD was associated with decreased brain volume and connectivity of the AIN. Machine learning results confirmed AIN specificity in predicting the bvFTD group. Conclusions : Altogether, these results suggest that bvFTD may be characterized by an allostatic-interoceptive overload manifested in ongoing electrophysiological markers, brain atrophy, functional networks, and cognition.Publication Rehabilitation Services for Young-Onset Dementia: Examples from High- and Low-Middle-Income Countries(2024) Suárez, Aida; Savage, Sharon; Alladi, Suvarna; Carvalho, Viviane; Arshad, Faheem; Camino, Julieta; Caramelli, Paulo; Comas, Adelina; Cook, Julia; Cooper, Claudia; García, Laura; Grasso, Stephanie; Jokel, Regina; Lavoie, Monica; León, Tomás; Priya, Thomas; Ramos, Teresita; Taylor, Cathleen; Townsend, Rosemary; Thöne, Angelika; Slachevsky Chonchol, Andrea; Volkmer, Anna; Weidner, Wendy; Mc O'Connor, ClaireThe WHO Dementia Global Action Plan states that rehabilitation services for dementia are required to promote health, reduce disability, and maintain quality of life for those living with dementia. Current services, however, are scarce, particularly for people with young-onset dementia (YOD). This article, written by an international group of multidisciplinary dementia specialists, offers a three-part overview to promote the development of rehabilitation services for YOD. Firstly, we provide a synthesis of knowledge on current evidence-based rehabilitative therapies for early-onset Alzheimer's disease (EOAD), behavioural variant frontotemporal dementia (bvFTD), primary progressive aphasia (PPA), and posterior cortical atrophy (PCA). Secondly, we discuss the characteristics of rehabilitation services for YOD, providing examples across three continents for how these services can be embedded in existing settings and the different roles of the rehabilitation multidisciplinary team. Lastly, we conclude by highlighting the potential of telehealth in making rehabilitation services more accessible for people with YOD. Overall, with this paper, we aim to encourage clinical leads to begin introducing at least some rehabilitation into their services, leveraging existing resources and finding support in the collective expertise of the broader multidisciplinary dementia professional community.Publication Gaps in biomedical research in frontotemporal dementia: A call for diversity and disparities focused research(2024) Nuytemans, Karen; Franzen, Sanne; Broce, Iris J.; Caramelli, Paulo; Ellajosyula, Ratnavalli; Finger, Elizabeth; Gupta, Veer; Gupta, Vivek; Illán-Gala, Ignacio; Loi, Samantha M.; Morhardt, Darby; Pijnenburg, Yolande; Rascovsky, Katya; Williams, Monique M.; Yokoyama, Jennifer S.; Acosta-Uribe, Juliana; Akinyemi, Rufus; Alladi, Suvarna; Ayele, Biniyam A.; Ayhan, Yavuz; Bourdage, Renelle; Castro-Suarez, Sheila; Cruz de Souza, Leonardo; Dacks, Penny; Boer, Sterre C. M. de; Leon, Jessica de; Dodge, Shana; Grasso, Stephanie; Ghoshal, Nupur; Kamath, Vidyulata; Kumfor, Fiona; Matias-Guiu, Jordi A.; Narme, Pauline; Nielsen, T. Rune; Okhuevbie, Daniel; Piña-Escudero, Stefanie; Ruiz-Garcia, Ramiro; Ryan, Brigid; Scarioni, Marta; Slachevsky Chonchol, Andrea; Suarez-Gonzalez, Aida; Lead Tee, Boon; Tsoy , Elena; Ulugut, Hulya; Chiadi U Onyike, Chiadi U.; Babulal, Ganesh M.; ISTAART Frontotemporal Dementia and Related Disorders PIA; ISTAART Diversity and Disparities PIAFrontotemporal dementia (FTD) is one of the leading causes of young-onset dementia before age 65, typically manifesting as abnormal behavior (in behavioral variant FTD) or language impairment (in primary progressive aphasia). Although FTD affects all populations across the globe, knowledge regarding the pathophysiology and genetics derives primarily from studies conducted in North America and Western Europe. Globally, biomedical research for FTD is hindered by variable access to diagnosis, discussed in this group's earlier article, and by reduced access to expertise, funding, and infrastructure. This perspective paper was produced by two professional interest areas of the Alzheimer's Association International Society to Advance Alzheimer's Research and Treatment (ISTAART) and discusses the field's current status on the cross-cultural aspects of basic and translational research in FTD (including that focused on epidemiology, genetics, biomarkers, and treatment). It subsequently provides a summary of gaps and needs to address the disparities and advance global FTD biomedical research.