Pomegranate juice exacerbates oxidative stress and nigrostriatal degeneration in Parkinson's disease Academic Article uri icon

Overview

MeSH Major

  • Dopaminergic Neurons
  • Oxidative Stress
  • Parkinson Disease
  • Punicaceae
  • Substantia Nigra

abstract

  • Numerous factors contribute to the death of substantia nigra (SN) dopamine (DA) neurons in Parkinson's disease (PD). Compelling evidence implicates mitochondrial deficiency, oxidative stress, and inflammation as important pathogenic factors in PD. Chronic exposure of rats to rotenone causes a PD-like syndrome, in part by causing oxidative damage and inflammation in substantia nigra. Pomegranate juice (PJ) has the greatest composite antioxidant potency index among beverages, and it has been demonstrated to have protective effects in a transgenic model of Alzheimer's disease. The present study was designed to examine the potential neuroprotective effects of PJ in the rotenone model of PD. Oral administration of PJ did not mitigate or prevent experimental PD but instead increased nigrostriatal terminal depletion, DA neuron loss, the inflammatory response, and caspase activation, thereby heightening neurodegeneration. The mechanisms underlying this effect are uncertain, but the finding that PJ per se enhanced nitrotyrosine, inducible nitric oxide synthase, and activated caspase-3 expression in nigral DA neurons is consistent with its potential pro-oxidant activity.

publication date

  • May 2014

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed Central ID

  • PMC3946191

Digital Object Identifier (DOI)

  • 10.1016/j.neurobiolaging.2013.10.077

PubMed ID

  • 24315037

Additional Document Info

start page

  • 1162

end page

  • 76

volume

  • 35

number

  • 5