Abstract
Background: Protective effects ofGynura bicoloraqueous extract (GAE) at three concentrations upon nerve growth factor (NGF) differentiated-PC12 cells against H2O2induced injury were examined.
Methods: NGF differentiated-PC12 cells were treated with GAE at 0.25%, 0.5% or 1%. 100 μM H2O2was used to treat cells with GAE pre-treatments. After incubating at 37 °C for 12 hr, experimental analyses were processed.
Results: H2O2exposure decreased cell viability, increased plasma membrane damage, suppressed Bcl-2 mRNA expression and enhanced Bax mRNA expression. GAE pre-treatments reversed these changes. H2O2exposure reduced mitochondrial membrane potential, lowered Na+-K+-ATPase activity, and increased DNA fragmentation and Ca2+release. GAE pre-treatments attenuated these alterations. H2O2stimulated the production of reactive oxygen species (ROS), interleukin (IL)-1beta, IL-6 and tumor necrosis factor-alpha, lowered glutathione content, and reduced glutathione peroxidase (GPX) and catalase activities. GAE pretreatments maintained GPX and catalase activities; and concentration-dependently diminished the generation of ROS and inflammatory cytokines. H2O2enhanced mRNA expression of nuclear factor kappa (NF-κ) B and p38. GAE pre-treatments decreased mRNA expression of NF-κB and p38. Conclusion: These findings suggested that GAE might be a potent neuronal protective agent.
Recommended Citation
Yang, Ya-Chen; Wu, Wen-Tzu; Mong, Mei-Chin; and Wang, Zhi-Hong
(2024)
"Gynura bicoloraqueous extract attenuated H2O2induced injury in PC12 cells,"
BioMedicine: Vol. 9
:
Iss.
2
, Article 4.
DOI: 10.37796/2211-8039.1613
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