Reperfusion in Ischemic Stroke

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Neurobiology and Clinical Neuroscience".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 2664

Special Issue Editors


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Guest Editor
Neurofarba Department, University of Florence, Via G. Pieraccini 6, 50139 Florence, Italy
Interests: stroke; ischemic stroke; clinical neurology

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Guest Editor
Institute of Neuroscience, Italian National Research Council (CNR), 50019 Florence, Italy
Interests: dementia; Alzheimer’s diseases; Parkinson’s disease; polyneuropathies; stroke

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Guest Editor
Interventional Neuroravascular Unit, University Hospital Careggi, Firenze, Italy
Interests: stroke; ischemic stroke

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Guest Editor
Neuroscience Institute, National Research Council, Via G. Moruzzi 1, 56124 Pisa, Italy
Interests: systems neuroscience

Special Issue Information

Dear Colleagues,

This Special Issue aims to attract the interest of the entire stroke research community, highlighting both the challenges and the opportunities of recent advancements in knowledge around reperfusion pathophysiology in ischemic stroke.

Not all patients clinically improve after acute ischemic stroke early recanalization therapy: the restoration of blood flow (reperfusion) could lead to a paradoxical worsening of brain damage through a complex series of biochemical and cellular pathophysiological mechanisms, the so-called reperfusion injury. The disruption of the neurovascular unit, namely the cellular and extracellular components involved in the regulation of cerebral blood flow and blood–brain barrier (BBB) function (endothelial cells, basal lamina matrix, astrocyte, pericytes, neurons, and supporting cells), is responsible for the major clinical–radiological complications of acute ischemic stroke, cerebral edema, and hemorrhagic transformation. The current literature suggests that cerebral edema and hemorrhagic transformation share both pre-transcriptional and transcriptional factors and should be considered to belong to the same physio-pathological continuum, pointing out that blood components’ extravasation could represent the result of a complex process triggered by ischemic cascade.

Possible identification of druggable targets may pave the way to future neuroprotection strategies. Moreover, it might help to predict outcome before reperfusion treatments and therefore support decision making with a precision medicine approach.

Dr. Benedetta Piccardi
Dr. Marzia Baldereschi
Dr. Leonardo Renieri
Dr. Anna Letizia Allegra Mascaro
Guest Editors

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Keywords

Stroke reperfusion injuries

Neuroimaging in acute ischemic stroke

Neuroimaging of stroke reperfusion

Blood–brain barrier in ischemic stroke

Neurovascular unit in ischemic stroke

Stroke neuroprotection

Precision medicine in acute ischemic stroke

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Published Papers (1 paper)

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Research

9 pages, 263 KiB  
Article
Causal Associations between Functional/Structural Connectivity and Stroke: A Bidirectional Mendelian Randomization Study
by Yisong Wang, Longtao Yang and Jun Liu
Biomedicines 2023, 11(6), 1575; https://doi.org/10.3390/biomedicines11061575 - 29 May 2023
Cited by 4 | Viewed by 2263
Abstract
Disruption of brain resting-state networks (RSNs) is known to be related to stroke exposure, but determining causality can be difficult in epidemiological studies. We used data on genetic variants associated with the levels of functional (FC) and structural connectivity (SC) within 7 RSNs [...] Read more.
Disruption of brain resting-state networks (RSNs) is known to be related to stroke exposure, but determining causality can be difficult in epidemiological studies. We used data on genetic variants associated with the levels of functional (FC) and structural connectivity (SC) within 7 RSNs identified from a genome-wide association study (GWAS) meta-analysis among 24,336 European ancestries. The data for stroke and its subtypes were obtained from the MEGASTROKE consortium, including up to 520,000 participants. We conducted a two-sample bidirectional Mendelian randomization (MR) study to investigate the causality relationship between FC and SC within 7 RSNs and stroke and its subtypes. The results showed that lower global mean FC and limbic network FC were associated with a higher risk of any ischemic stroke and small vessel stroke separately. Moreover, ventral attention network FC and default mode network SC have a positive causal relationship with the risk of small vessel stroke and large artery stroke, respectively. In the inverse MR analysis, any stroke and large artery stroke were causally related to dorsal attention network FC and somatomotor FC, respectively. The present study provides genetic support that levels of FC or SC within different RSNs have contrasting causal effects on stroke and its subtypes. Moreover, there is a combination of injury and compensatory physiological processes in brain RSNs following a stroke. Further studies are necessary to validate our results and explain the physiological mechanisms. Full article
(This article belongs to the Special Issue Reperfusion in Ischemic Stroke)
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