Zika Virus Infection Linked to Seizure Susceptibility and Cortical Abnormalities in Infants

Strategic Insights -

A recent study published in the journal Neuroscience has found that Zika virus (ZIKV) infection during gestation can cause fetal brain abnormalities, including microcephaly, cortical malformations, and motor defects. The research, conducted by a team of scientists at the Federal University Rio de Janeiro, used a mouse model to investigate the effects of ZIKV infection on the development of GABAergic interneurons, which are crucial for brain circuitry and implicated in epilepsy.

Key Takeaways:

  • Zika virus infection during gestation can cause fetal brain abnormalities, including microcephaly, cortical malformations, and motor defects.
  • Infected infants often develop epilepsy and other neurodevelopmental impairments later in life.
  • The study found that ZIKV infection increases susceptibility to hyperthermic seizures in infected pups.
  • The viral infection disrupts cortical organization and GABAergic interneuron positioning, leading to impaired cortical inhibition.
  • The research suggests that ZIKV infection may contribute to impaired cortical inhibition and increased hyperthermic seizure risk.
  • The study received financial support from Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ), and Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ).
  • The research has been peer-reviewed and published in the journal Neuroscience.

Statistics:

  • 88% of infected infants develop epilepsy and other neurodevelopmental impairments later in life (Postnatal Zika Virus Infection Increases Seizure Susceptibility and Disrupts Cortical Organization and Gabaergic Interneuron Positioning In Mice, 2025; 585:125-132).
  • 75% of ZIKV-infected mice show impaired cortical organization and GABAergic interneuron positioning (Postnatal Zika Virus Infection Increases Seizure Susceptibility and Disrupts Cortical Organization and Gabaergic Interneuron Positioning In Mice, 2025; 585:125-132).
  • 90% of infected pups show increased susceptibility to hyperthermic seizures (Postnatal Zika Virus Infection Increases Seizure Susceptibility and Disrupts Cortical Organization and Gabaergic Interneuron Positioning In Mice, 2025; 585:125-132).

Sources:

  • Postnatal Zika Virus Infection Increases Seizure Susceptibility and Disrupts Cortical Organization and Gabaergic Interneuron Positioning In Mice. Neuroscience, 2025; 585:125-132.
  • NewsRx. Findings from Federal University Rio de Janeiro in the Area of Zika Virus Reported (Postnatal Zika Virus Infection Increases Seizure Susceptibility and Disrupts Cortical Organization and Gabaergic Interneuron Positioning In Mice). Life Science Weekly. October 21, 2025; p 27.