Histone deacetylases (HDACs) in frontotemporal lobar degeneration.

Abstract:

AIMS:Frontotemporal lobar degeneration (FTLD) is clinically and pathologically heterogeneous. Although associated with variations in MAPT, GRN and C9ORF72, the pathogenesis of these, and of other nongenetic, forms of FTLD, remains unknown. Epigenetic factors such as histone regulation by histone deacetylases (HDAC) may play a role in the dysregulation of transcriptional activity, thought to underpin the neurodegenerative process. METHODS:The distribution and intensity of HDACs 4, 5 and 6 was assessed semi-quantitatively in immunostained sections of temporal cortex with hippocampus, and cerebellum, from 33 pathologically confirmed cases of FTLD and 27 controls. RESULTS:We found a significantly greater intensity of cytoplasmic immunostaining for HDAC4 and HDAC6 in granule cells of the dentate gyrus in cases of FTLD overall compared with controls, and specifically in cases of FTLD tau-Picks compared with FTLD tau-MAPT and controls. No differences were noted between FTLD-TDP subtypes, or between the different genetic and nongenetic forms of FTLD. No changes were seen in HDAC5 in any FTLD or control cases. CONCLUSIONS:Dysregulation of HDAC4 and/or HDAC6 could play a role in the pathogenesis of FTLD-tau associated with Pick bodies, although their lack of immunostaining implies that such changes do not contribute directly to the formation of Pick bodies.

authors

Whitehouse A,Doherty K,Yeh HH,Robinson AC,Rollinson S,Pickering-Brown S,Snowden J,Thompson JC,Davidson YS,Mann DM

doi

10.1111/nan.12153

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

245-57

issue

2

eissn

0305-1846

issn

1365-2990

journal_volume

41

pub_type

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