Abstract
Neuroinflammation is a complex biological response to any injury occurring to the central nervous system. It is mainly characterized by the recruitment of immune system cells, namely the microglial cells, in the site of injury. Once activated, microglia expresses a cholesterol transporter protein (TSPO), previously also known as peripheral type benzodiazepine receptor. PK11195 is a ligand for TSPO and, labelled with a positron emitter, it is also the most used tracer for PET molecular imaging to in vivo map the microglia activation in various neurological disorders, including ischemic stroke. Recent [11C]PK11195 PET studies proved activated microglia both locally in the area of the infarct and at distance along the affected fibre tracts, suggesting the presence of two different microglia subtypes with peculiar functions in disease progression. The aim of this review is to discuss the most recent knowledge about imaging neuroinflammation in ischemic stroke and in the atherosclerotic and vascular inflammatory disorders, trying to elucidate the interplay between the clinical course and the activation of a microglial response.
Keywords: [11C]PK11195, activated microglia, ischemic stroke, neuroinflammation, PET imaging.
Current Vascular Pharmacology
Title:Imaging Neuroinflammation in Ischemic Stroke and in the Atherosclerotic Vascular Disease
Volume: 13 Issue: 2
Author(s): Chiara Cerami and Daniela Perani
Affiliation:
Keywords: [11C]PK11195, activated microglia, ischemic stroke, neuroinflammation, PET imaging.
Abstract: Neuroinflammation is a complex biological response to any injury occurring to the central nervous system. It is mainly characterized by the recruitment of immune system cells, namely the microglial cells, in the site of injury. Once activated, microglia expresses a cholesterol transporter protein (TSPO), previously also known as peripheral type benzodiazepine receptor. PK11195 is a ligand for TSPO and, labelled with a positron emitter, it is also the most used tracer for PET molecular imaging to in vivo map the microglia activation in various neurological disorders, including ischemic stroke. Recent [11C]PK11195 PET studies proved activated microglia both locally in the area of the infarct and at distance along the affected fibre tracts, suggesting the presence of two different microglia subtypes with peculiar functions in disease progression. The aim of this review is to discuss the most recent knowledge about imaging neuroinflammation in ischemic stroke and in the atherosclerotic and vascular inflammatory disorders, trying to elucidate the interplay between the clinical course and the activation of a microglial response.
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Cite this article as:
Cerami Chiara and Perani Daniela, Imaging Neuroinflammation in Ischemic Stroke and in the Atherosclerotic Vascular Disease, Current Vascular Pharmacology 2015; 13 (2) . https://dx.doi.org/10.2174/15701611113116660168
DOI https://dx.doi.org/10.2174/15701611113116660168 |
Print ISSN 1570-1611 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6212 |
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