Neuroprotection by ethanolic extract of Syzygium aromaticum in Alzheimer's disease like pathology via maintaining oxidative balance through SIRT1 pathway

Exp Gerontol. 2018 Sep:110:277-283. doi: 10.1016/j.exger.2018.06.026. Epub 2018 Jun 27.

Abstract

The oxidative stress plays a key role in Alzheimer's disease (AD) and Sirtuin (SIRT1) is potential mediator of oxidative pathway. This study explored the role of Syzygium aromaticum on SIRT1 and oxidative balance in amyloid beta induced toxicity. Anti-oxidative capacity of Syzygium aromaticum was performed in Aβ25-35 induced neurotoxicity in neuronal cells. Superoxide dismutase, Catalase and Glutathione enzyme activity were determined by the treatment of Syzygium aromaticum. Both recombinant and endogenous SIRT1 activity were performed in its presence. The expression of γ-secretase and SIRT1 were evaluated by western blot. Syzygium aromaticum was capable to scavenge ROS and elevate the percentage of anti-oxidant enzymes. It also activated and elevated the level of SIRT1 and downregulated γ-secretase level. These findings show a holistic approach towards the neurodegenerative disease management by Syzygium aromaticum which could lead to the formulation of new drug for AD. This Ayurvedic product can give a healthy aging with no side effects and also be cost effectives. It may meet unmet medical needs of current relevance.

Keywords: Alzheimer's disease; SH-SY5Y; SIRT1; Serum; Syzygium aromaticum.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alzheimer Disease / drug therapy*
  • Amyloid Precursor Protein Secretases / metabolism
  • Catalase / metabolism
  • Cell Line, Tumor
  • Glutathione / metabolism
  • HEK293 Cells
  • Humans
  • Neuroprotection
  • Oxidative Stress / drug effects*
  • Plant Extracts / pharmacology*
  • Sirtuin 1 / metabolism*
  • Superoxide Dismutase / metabolism
  • Syzygium / chemistry*

Substances

  • Plant Extracts
  • Catalase
  • Superoxide Dismutase
  • Amyloid Precursor Protein Secretases
  • SIRT1 protein, human
  • Sirtuin 1
  • Glutathione