Format

Send to

Choose Destination
Biomedicine (Taipei). 2019 Jun;9(2):12. doi: 10.1051/bmdcn/2019090212. Epub 2019 May 24.

Gynura bicolor aqueous extract attenuated H2O2 induced injury in PC12 cells.

Author information

1
Department of Food Nutrition and Health Biotechnology, Asia University, Taichung 413, Taiwan.
2
Department of Food Nutrition and Health Biotechnology, Asia University, Taichung 413, Taiwan - Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan.

Abstract

BACKGROUND:

Protective effects of Gynura bicolor aqueous extract (GAE) at three concentrations upon nerve growth factor (NGF) differentiated-PC12 cells against H2O2 induced injury were examined.

METHODS:

NGF differentiated-PC12 cells were treated with GAE at 0.25%, 0.5% or 1%. 100 μM H2O2 was used to treat cells with GAE pre-treatments. After incubating at 37 °C for 12 hr, experimental analyses were processed.

RESULTS:

H2O2 exposure decreased cell viability, increased plasma membrane damage, suppressed Bcl-2 mRNA expression and enhanced Bax mRNA expression. GAE pre-treatments reversed these changes. H2O2 exposure reduced mitochondrial membrane potential, lowered Na+-K+-ATPase activity, and increased DNA fragmentation and Ca2+ release. GAE pre-treatments attenuated these alterations. H2O2 stimulated 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. H2O2 enhanced 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.

Supplemental Content

Full text links

Icon for EDP Sciences Icon for PubMed Central
Loading ...
Support Center