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In Vivo TSPO Signal and Neuroinflammation in Alzheimer's Disease.

Abstract：

:In the last decade, positron emission tomography (PET) and single-photon emission computed tomography (SPECT) in in vivo imaging has attempted to demonstrate the presence of neuroinflammatory reactions by measuring the 18 kDa translocator protein (TSPO) expression in many diseases of the central nervous system. We focus on two pathological conditions for which neuropathological studies have shown the presence of neuroinflammation, which translates in opposite in vivo expression of TSPO. Alzheimer's disease has been the most widely assessed with more than forty preclinical and clinical studies, showing overall that TSPO is upregulated in this condition, despite differences in the topography of this increase, its time-course and the associated cell types. In the case of schizophrenia, a reduction of TSPO has instead been observed, though the evidence remains scarce and contradictory. This review focuses on the key characteristics of TSPO as a biomarker of neuroinflammation in vivo, namely, on the cellular origin of the variations in its expression, on its possible biological/pathological role and on its variations across disease phases.

journal_name

Cells

journal_title

Cells

authors

Tournier BB,Tsartsalis S,Ceyzériat K,Garibotto V,Millet P

doi

10.3390/cells9091941

subject

Has Abstract

pub_date

2020-08-21 00:00:00

issue

9

issn

2073-4409

pii

cells9091941

journal_volume

9

pub_type

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