Thalamic microglial activation in ischemic stroke detected in vivo by PET and [11C]PK1195.

Pappata, S; Levasseur, M; Gunn, R N; Myers, R; Crouzel, C; Syrota, A; Jones, T; Kreutzberg, G W et al. · Neurology · 2000

case_series · Level IV

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Abstract

Using quantitative PET, the authors studied the binding of [11C]PK11195, a marker of activated microglia, in the thalamus of patients with chronic middle cerebral artery infarcts. All patients showed increased [11C]PK11195 binding in the ipsilateral thalamus, indicating the activation of microglia in degenerating projection areas remote from the primary lesion. A persistent increase in [11C]PK11195 binding suggests active, long-term thalamic microstructural changes after corticothalamic connection damage.

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