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Updated: Nov 6, 2025

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Neurovascular Interactions in Malaria.

Maiara N Lima1, Rodrigo J R X Freitas1, Beatriz A B R Passos1

  • 1Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Fiocruz, Rio de Janeiro, Brazil.

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|May 5, 2021
PubMed
Summary
This summary is machine-generated.

Malaria infection can cause severe cerebral malaria (CM), leading to neurological damage and cognitive deficits. This review explores how neuroinflammation disrupts the neurovascular unit (NVU), impacting the blood-brain barrier (BBB) and causing brain injury.

Keywords:
AstrocytesBlood-brain barrierEndothelial cellsMalariaMicrogliaNeurons

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Area of Science:

  • Neuroscience
  • Infectious Diseases
  • Pathophysiology

Background:

  • Malaria remains a global health challenge, with cerebral malaria (CM) being its most severe neurological complication.
  • Survivors of CM often experience persistent cognitive and behavioral deficits, highlighting the need to understand neurological sequelae.
  • Increasing survival rates from malaria make neurological complications like CM more apparent.

Purpose of the Study:

  • To review the cellular changes within the neurovascular unit (NVU) during malaria-induced neuroinflammation.
  • To elucidate the role of systemic pathophysiology in the development and progression of cerebral malaria.
  • To understand how blood-brain barrier (BBB) integrity is compromised in CM.

Main Methods:

  • Literature review focusing on neuroinflammation in malaria.
  • Analysis of cellular mechanisms within the NVU.
  • Examination of parasite products and cytokines' effects on BBB.

Main Results:

  • Neuroinflammation in malaria involves glia activation, neuronal apoptosis, and compromised BBB integrity.
  • The NVU, comprising endothelial cells, pericytes, astrocytes, neurons, and microglia, is a key target of malaria-related damage.
  • Parasite byproducts (heme, hemozoin) and cytokines disrupt NVU homeostasis, increasing BBB permeability and leading to neurodegeneration.

Conclusions:

  • Malaria infection triggers neuroinflammation that critically affects the NVU.
  • Disruption of the NVU and BBB is central to the pathogenesis of cerebral malaria and its neurological consequences.
  • Understanding these mechanisms is crucial for developing strategies to prevent or treat neurological sequelae of malaria.