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Related Experiment Video

Updated: Mar 14, 2026

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[Inflammation and oxidation: predictive and/or causative factors].

Carlos Fernández-Viadero1, Magdalena Jiménez-Sanz2, Anzu Fernández-Pérez3

  • 1Unidad de Rehabilitación Psiquiátrica Parayas, Hospital Universitario Marqués de Valdecilla, Santander, España; Biogerontología, Departamento de Anatomía y Biología Celular, Universidad de Cantabria, Santander, España.

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Summary

Brain aging causes cognitive decline and dementia through neuroinflammation and oxidative stress. Understanding these mechanisms may reveal new therapeutic targets for brain health.

Keywords:
Estrés neuronalFree oxygen radicalsInflamaciónInflammationInflammatory mediatorsMediadores inflamatoriosNeuronal stressRadicales libres de oxígeno

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Area of Science:

  • Neuroscience
  • Gerontology
  • Pathophysiology

Background:

  • Brain aging is characterized by reduced adaptability and response, potentially leading to cognitive impairment and dementia.
  • Neuroinflammation and oxidative stress are key pathophysiological mechanisms underlying age-related brain dysfunction.
  • These processes involve inflammatory cytokines, microglia activation, and free radical damage, impacting neuronal function and plasticity.

Purpose of the Study:

  • To explore the molecular mechanisms driving brain aging, neuroinflammation, and oxidative stress.
  • To identify potential therapeutic targets for preventing or treating age-related cognitive decline and dementia.

Main Methods:

  • This study reviews the molecular pathways involved in brain aging, focusing on neuroinflammation and oxidative stress.
  • Analysis of inflammatory cytokines, microglia activation, and oxidative damage markers.
  • Examination of effects on neuronal plasticity and hippocampus-dependent memory.

Main Results:

  • Neuroinflammation, mediated by cytokines and microglia, causes neuronal injury and impairs hippocampus-dependent memory by affecting long-term potentiation.
  • Oxidative stress leads to toxic effects in aged brains via lipid peroxidation and DNA damage.
  • These molecular events contribute significantly to cognitive impairment and dementia.

Conclusions:

  • Identifying the molecular pathogenesis of brain aging is crucial for developing preventative and therapeutic strategies.
  • Targeting neuroinflammation and oxidative stress pathways holds promise for combating cognitive decline and dementia.