Cortical microstructure in primary progressive aphasia: a multicenter study


Por: Illan-Gala, I, Montal, V, Borrego-Ecija, S, Mandelli, ML, Falgas, N, Welch, AE, Pegueroles, J, Santos-Santos, M, Bejanin, A, Alcolea, D, Dols-Icardo, O, Belbin, O, Sanchez-Saudinos, MB, Bargallo, N, Gonzalez-Ortiz, S, Llado, A, Blesa, R, Dickerson, BC, Rosen, HJ, Miller, BL, Lleo, A, Gorno-Tempini, ML, Sanchez-Valle, R, Fortea, J

Publicada: 9 feb 2022
Resumen:
Background: Cortical mean diffusivity is a novel imaging metric sensitive to early changes in neurodegenerative syndromes. Higher cortical mean diffusivity values reflect microstructural disorganization and have been proposed as a sensitive biomarker that might antedate macroscopic cortical changes. We aimed to test the hypothesis that cortical mean diffusivity is more sensitive than cortical thickness to detect cortical changes in primary progressive aphasia (PPA). Methods: In this multicenter, case-control study, we recruited 120 patients with PPA (52 non-fluent, 31 semantic, and 32 logopenic variants; and 5 GRN-related PPA) as well as 89 controls from three centers. The 3-Tesla MRI protocol included structural and diffusion-weighted sequences. Disease severity was assessed with the Clinical Dementia Rating scale. Cortical thickness and cortical mean diffusivity were computed using a surface-based approach. Results: The comparison between each PPA variant and controls revealed cortical mean diffusivity increases and cortical thinning in overlapping regions, reflecting the canonical loci of neurodegeneration of each variant. Importantly, cortical mean diffusivity increases also expanded to other PPA-related areas and correlated with disease severity in all PPA groups. Cortical mean diffusivity was also increased in patients with very mild PPA when only minimal cortical thinning was observed and showed a good correlation with measures of disease severity. Conclusions: Cortical mean diffusivity shows promise as a sensitive biomarker for the study of the neurodegeneration-related microstructural changes in PPA.

Filiaciones:
Illan-Gala, I:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

 Univ Calif San Francisco, Atlantic Fellow Equ Brain Hlth, San Francisco, CA 94115 USA

Montal, V:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Borrego-Ecija, S:
 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

 Univ Barcelona, Hosp Clin Barcelona, Inst Invest Biomed August Pi i Sunyer, Alzheimers Dis & Other Cognit Disorders Unit,Serv, Barcelona 08036, Spain

Mandelli, ML:
 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Falgas, N:
 Univ Calif San Francisco, Atlantic Fellow Equ Brain Hlth, San Francisco, CA 94115 USA

 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Welch, AE:
 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Pegueroles, J:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Santos-Santos, M:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Bejanin, A:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Alcolea, D:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Dols-Icardo, O:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Belbin, O:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Sanchez-Saudinos, MB:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

Bargallo, N:
 Hosp Clin Barcelona & Magnet Resonance Image Core, Inst Invest Biomed August Pi i Sunye IDIBAPS, Radiol Dept, Barcelona, Spain

Gonzalez-Ortiz, S:
 Hosp Mar, Dept Radiol, Barcelona, Spain

Llado, A:
 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

 Univ Barcelona, Hosp Clin Barcelona, Inst Invest Biomed August Pi i Sunyer, Alzheimers Dis & Other Cognit Disorders Unit,Serv, Barcelona 08036, Spain

Blesa, R:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Dickerson, BC:
 Massachusetts Gen Hosp, Dept Neurol, Boston, MA 02114 USA

 Harvard Med Sch, Boston, MA 02115 USA

 Massachusetts Alzheimers Dis Res Ctr, Boston, MA USA

Rosen, HJ:
 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Miller, BL:
 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Lleo, A:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

Gorno-Tempini, ML:
 Univ Calif San Francisco, Memory & Aging Ctr, Dept Neurol, San Francisco, CA 94115 USA

Sanchez-Valle, R:
 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

 Univ Barcelona, Hosp Clin Barcelona, Inst Invest Biomed August Pi i Sunyer, Alzheimers Dis & Other Cognit Disorders Unit,Serv, Barcelona 08036, Spain

Fortea, J:
 Hosp Santa Creu & Sant Pau, Biomed Res Inst St Pau, Dept Neurol, Memory Unit, St Antoni Maria Claret 167, Barcelona 08025, Spain

 Ctr Invest Biomed Red Enfermedades Neurodegenerat, Barcelona, Spain

 Fundacio Catalana Sindrome Down, Barcelona Med Ctr, Barcelona, Spain
ISSN: 17589193
Editorial
BMC, CAMPUS, 4 CRINAN ST, LONDON N1 9XW, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 14 Número: 1
Páginas:
WOS Id: 000753390100004
ID de PubMed: 35139897
imagen Green Published, gold, All Open Access, Gold, Green

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