Document Detail


Distinct brain perfusion pattern associated with CSF biomarkers profile in primary progressive aphasia.
MedLine Citation:
PMID:  22665450     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Objective A new classification of primary progressive aphasia (PPA) was recently proposed to differentiate between non-fluent aphasia (NF-PPA), semantic variant of PPA (S-PPA) and logopenic aphasia (LPA) by their phenotypic presentations. CSF biomarkers (BM) may differentiate PPA with atypical Alzheimer's disease (AD) that presents with LPA from PPA with frontotemporal lobe degeneration that presents with either NF-PPA or S-PPA. Single photon emission computed tomography (SPECT) was used to investigate brain hypoperfusion differences among PPA subtypes according to their CSF AD profiles. Methods 34 PPA patients underwent lumbar puncture and brain perfusion SPECT. PPA patients were classified into two subgroups according to theAβ(42):tau ratio: PPA BM positive (with an AD CSF profile) and PPA BM negative (not having an AD CSF profile). The biological classification was made while blind to the phenotypical presentation. The brain perfusion profiles of the PPA subgroups were compared with those of 24 healthy subjects. Results PPA BM positive patients had left-side predominant hypoperfusion in the temporoparietal cortex that extended to the dorsolateral prefrontal cortex and perisylvian region while PPA BM negative patients had hypoperfusion that was predominant in the temporal poles (p<10(-4) corrected). Conclusion Distinct hypoperfusion patterns in PPA BM positive and PPA BM negative patients were observed, similar to those that have been described for S-PPA and LPA. These results support using CSF biomarkers to classify PPA.
Authors:
Aurélie Kas; Olga Uspenskaya; Foudil Lamari; Leonardo Cruz de Souza; Marie-Odile Habert; Bruno Dubois; Marc Teichmann; Marie Sarazin
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neurology, neurosurgery, and psychiatry     Volume:  83     ISSN:  1468-330X     ISO Abbreviation:  J. Neurol. Neurosurg. Psychiatr.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-06-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985191R     Medline TA:  J Neurol Neurosurg Psychiatry     Country:  England    
Other Details:
Languages:  eng     Pagination:  695-8     Citation Subset:  IM    
Affiliation:
Alzheimerb's Institute, AP-HP, Pitié-Salpêtrière Hospital, Paris, F-75013, France; marie.sarazin@psl.aphp.fr.
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