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Neuroprotection by Caffeine in Hyperoxia-Induced Neonatal Brain Injury.

Stefanie Endesfelder1, Ulrike Weichelt2, Evelyn Strauß3

  • 1Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany. stefanie.endesfelder@charite.de.

International Journal of Molecular Sciences
|January 21, 2017
PubMed
Summary

Caffeine protects the developing brain from oxidative stress and inflammation, common in premature infants. This study shows caffeine reduces brain damage markers and promotes protective responses in a neonatal rat model.

Keywords:
anti-oxidative responsecaffeinedeveloping brainhyperoxiaoxidative stresspreterm infants

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Neonatal Research

Background:

  • Prematurity can lead to
  • oxygen radical disease of prematurity
  • due to oxidative stress and free radical damage.
  • Caffeine is known to scavenge free radicals and may reduce brain damage in preterm infants.

Purpose of the Study:

  • To investigate caffeine's effects on oxidative stress, inflammation, apoptosis, and extracellular matrix in the developing brain of neonatal rats exposed to hyperoxia.
  • To evaluate caffeine's neuroprotective potential in a model relevant to human fetal brain development.

Main Methods:

  • Neonatal Wistar rats (postnatal Day 6) were pre-treated with caffeine.
  • Rats were exposed to 80% oxygen for 24 and 48 hours.
  • Assessed oxidative stress markers, antioxidant responses, inflammatory cytokines, transcription factors, apoptosis, and extracellular matrix.

Main Results:

  • Caffeine reduced oxidative stress markers (heme oxygenase-1, lipid peroxidation, hydrogen peroxide, GCLC) and promoted antioxidant responses (superoxide dismutase, peroxiredoxin 1, sulfiredoxin 1).
  • Caffeine down-regulated pro-inflammatory cytokines, modulated redox-sensitive transcription factors (Nrf2/Keap1, NFκB), and reduced pro-apoptotic effectors (PARP-1, AIF, caspase-3).
  • Caffeine diminished extracellular matrix degeneration (MMP-2, TIMP-1/2).

Conclusions:

  • Caffeine exhibits pleiotropic neuroprotective effects in the developing brain.
  • Its benefits stem from potent anti-oxidant, anti-inflammatory, and anti-apoptotic properties.
  • Caffeine is a promising therapeutic agent for preventing brain injury in premature neonates.