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    Correlation of von Willebrand factor and platelets with acute ischemic stroke etiology and revascularization outcome: an immunohistochemical study

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    Authors
    Mereuta, Oana Madalina
    Gounis, Matthew J.
    Puri, Ajit S.
    UMass Chan Affiliations
    New England Center for Stroke Research
    Department of Radiology
    Document Type
    Journal Article
    Publication Date
    2022-05-20
    Keywords
    Embolic
    Platelets
    Stroke
    Thrombectomy
    Cardiovascular Diseases
    Nervous System Diseases
    Neurology
    Neurosurgery
    Radiology
    
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    Link to Full Text
    https://doi.org/10.1136/neurintsurg-2022-018645
    Abstract
    BACKGROUND: Platelets and von Willebrand factor (vWF) are key components of acute ischemic stroke (AIS) emboli. We aimed to investigate the CD42b (platelets)/vWF expression, its association with stroke etiology and the impact these components may have on the clinical/procedural parameters. METHODS: CD42b/vWF immunostaining was performed on 288 emboli collected as part of the multicenter STRIP Registry. CD42b/VWF expression and distribution were evaluated. Student's t-test and chi(2) test were performed as appropriate. RESULTS: The mean CD42b and VWF content in clots was 44.3% and 21.9%, respectively. There was a positive correlation between platelets and vWF (r=0.64, p < 0.001**). We found a significantly higher vWF level in the other determined etiology (p=0.016*) and cryptogenic (p=0.049*) groups compared with cardioembolic etiology. No significant difference in CD42b content was found across the etiology subtypes. CD42b/vWF patterns were significantly associated with stroke etiology (p=0.006*). The peripheral pattern was predominant in atherosclerotic clots (36.4%) while the clustering (patchy) pattern was significantly associated with cardioembolic and cryptogenic origin (66.7% and 49.8%, respectively). The clots corresponding to other determined etiology showed mainly a diffuse pattern (28.1%). Two types of platelets were distinguished within the CD42b-positive clusters in all emboli: vWF-positive platelets were observed at the center, surrounded by vWF-negative platelets. Thrombolysis correlated with a high platelet content (p=0.03*). vWF-poor and peripheral CD42b/vWF pattern correlated with first pass effect (p=0.03* and p=0.04*, respectively). CONCLUSIONS: The vWF level and CD42b/vWF distribution pattern in emboli were correlated with AIS etiology and revascularization outcome. Platelet content was associated with response to thrombolysis.
    Source

    Mereuta OM, Abbasi M, Arturo Larco JL, Dai D, Liu Y, Arul S, Kadirvel R, Hanel RA, Yoo AJ, Almekhlafi MA, Layton KF, Delgado Almandoz JE, Kvamme P, Mendes Pereira V, Jahromi BS, Nogueira RG, Gounis MJ, Patel B, Aghaebrahim A, Sauvageau E, Bhuva P, Soomro J, Demchuk AM, Thacker IC, Kayan Y, Copelan A, Nazari P, Cantrell DR, Haussen DC, Al-Bayati AR, Mohammaden M, Pisani L, Rodrigues GM, Puri AS, Entwistle J, Meves A, Savastano L, Cloft HJ, Nimjee SM, McBane Ii RD, Kallmes DF, Brinjikji W. Correlation of von Willebrand factor and platelets with acute ischemic stroke etiology and revascularization outcome: an immunohistochemical study. J Neurointerv Surg. 2022 May 20:neurintsurg-2022-018645. doi: 10.1136/neurintsurg-2022-018645. Epub ahead of print. PMID: 35595407. Link to article on publisher's site

    DOI
    10.1136/neurintsurg-2022-018645
    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/48644
    PubMed ID
    35595407
    Notes

    Full author list omitted for brevity. For the full list of authors, see article.

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    Link to Article in PubMed

    ae974a485f413a2113503eed53cd6c53
    10.1136/neurintsurg-2022-018645
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