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Updated: Jun 18, 2026
Modelling Zika Virus Infection of the Developing Human Brain In Vitro Using Stem Cell Derived Cerebral Organoids
Published on: September 19, 2017
Expression of Purinergic and Endothelial Activation Markers in Brain Tissue From Fatal Microcephaly Associated With
Jorge Rodrigues de Sousa1,2, Gustavo Batista Ferro2, Leticia Vieira Teixeira2
1Departamento de Patologia, Universidade do Estado do Pará, Belém, Pará, Brazil.
Background:
Zika virus (ZIKV) is a flavivirus that has gained global attention due to its association with congenital microcephaly and neuroinflammatory responses. Markers of endothelial activation and purinergic signaling have been identified in the context of ZIKV neuropathogenesis, although the underlying mechanisms remain poorly understood.
Methods:
Brain tissue samples from fatal cases of ZIKV-induced microcephaly were analyzed using immunohistochemistry to detect endothelial activation markers (E-selectin, P-selectin, ICAM-1, and VCAM-1) and purinergic receptors (P2X4, P2X7, and P2Y2). Quantitative analysis measured the expression patterns of these molecules and assessed their contribution to neuroinflammation and blood-brain barrier disruption.
Results:
ZIKV-positive cases exhibited significant endothelial activation, with increased expression of adhesion molecules mediating leukocyte recruitment. Purinergic receptor upregulation suggested a role in excitotoxicity and neuroinflammatory exacerbation. Statistical analysis revealed a marked difference in marker expression between ZIKV-infected cases and controls (p < 0.0001).
Conclusion:
The interaction between endothelial activation and purinergic signaling may be associated with the vascular dysfunction and neuronal damage observed in ZIKV-associated microcephaly. Understanding these associations could contribute to the development of targeted interventions for Zika congenital syndrome.
Insights
Zika virus (ZIKV) infection in infants causes microcephaly and neuroinflammation. Endothelial activation and purinergic signaling are key factors in ZIKV neuropathogenesis and vascular dysfunction.
Area of Science:
- Neuroscience
- Immunology
- Virology
Background:
- Zika virus (ZIKV) is a flavivirus linked to congenital microcephaly and neuroinflammation.
- Endothelial activation and purinergic signaling are implicated in ZIKV neuropathogenesis, but mechanisms are unclear.
Purpose of the Study:
- To investigate the roles of endothelial activation and purinergic signaling in ZIKV-induced microcephaly.
Main Methods:
- Immunohistochemistry was used to analyze brain tissue from fatal ZIKV microcephaly cases.
- Expression of endothelial activation markers and purinergic receptors was quantified.
Main Results:
- ZIKV cases showed significant endothelial activation and increased expression of adhesion molecules.
- Upregulated purinergic receptors suggested roles in excitotoxicity and neuroinflammation.
- Marker expression differed significantly between ZIKV-infected and control cases (p < 0.0001).
Conclusions:
- Endothelial activation and purinergic signaling interplay may drive vascular dysfunction and neuronal damage in ZIKV microcephaly.
- Understanding these links could inform interventions for Zika congenital syndrome.
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