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Updated: Jan 8, 2026

Mouse Footpad Inoculation Model to Study Viral-Induced Neuroinflammatory Responses
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Ciencia básica y patogénesis

Avishek Roy1, Filipa Monteiro Rocha1, Mukesh Varshney1

  • 1Karolinska Institutet, Stockholm, Sweden.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio revela astrogliosis reactiva significativa en cerebros con enfermedad de Parkinson (EP), destacando ICAM1 astrocítico como un factor clave. Los nuevos trazadores de PET ofrecen potencial para visualizar la activación glial en la EP.

Palabras clave:
astrogliosisneuroinflamaciónenfermedad de ParkinsonPETICAM1

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Área de la Ciencia:

  • Neuroscience; Immunology; Radiochemistry

Sus antecedentes:

  • Glial cell activation (astrocytes and microglia) is implicated in Parkinson's disease (PD) neuroinflammation.; Lack of specific biomarkers hinders tracking glial activation in PD.; Novel positron emission tomography (PET) tracers for glial cells show promise but require further investigation in PD.

Objetivo del estudio:

  • To investigate glial-mediated inflammation in Parkinson's disease (PD) brains.; To evaluate novel PET tracers for visualizing reactive astrocytes and activated microglia.; To elucidate the role of astrogliosis and ICAM1 in PD pathogenesis.

Principales métodos:

  • Utilized a multi-PET tracer approach with radioligand binding assays.; Conducted postmortem brain imaging autoradiography studies.; Performed morphometric and marker analyses for astrocytes and microglia (GFAP, S100B, IBA1).

Principales resultados:

  • 3H-BU99008 and 3H-Deprenyl showed distinct binding sites, potentially targeting different astrocyte subpopulations.; Significant reactive astrogliosis was observed in PD brains compared to controls.; Upregulation of GFAP/ICAM1 positive-reactive astrocytes was identified in PD, indicating ICAM1's role in inflammation.

Conclusiones:

  • This study provides a comprehensive view of reactive astrogliosis in advanced PD.; Astrocytic ICAM1 plays a significant role in PD pathogenesis.; Further research will explore the astrocyte-microglia interplay and ICAM1's role in neuroinflammation.