Protective effect of naringin, a citrus flavonoid, against colchicine-induced cognitive dysfunction and oxidative damage in rats

J Med Food. 2010 Aug;13(4):976-84. doi: 10.1089/jmf.2009.1251.


Alzheimer's disease is a neurodegenerative disorder. Central administration of colchicine is well known to cause cognitive impairment and oxidative damage, which simulates sporadic dementia of the Alzheimer type in humans. The present study has been designed to investigate the protective effects of naringin against the colchicine-induced cognitive impairment and oxidative damage in rats. Colchicine (15 microg/5 microL), administered intracerebroventricularly, resulted in poor memory retention in both the Morris water maze and elevated plus maze task paradigms and caused marked oxidative damage. It also caused a significant decrease in acetylcholinesterase activity. Naringin (40 and 80 mg/kg, p.o.) treatment was given daily for a period of 25 days beginning 4 days prior to colchicine administration. Chronic treatment with naringin caused significant improvement in the cognitive performance and attenuated oxidative damage, as evidenced by lowering of malondialdehyde level and nitrite concentration and restoration of superoxide dismutase, catalase, glutathione S-transferase, and reduced glutathione levels, and acetylcholinesterase activity compared to control. The present study highlights the therapeutic potential of naringin against colchicine-induced cognitive impairment and associated oxidative damage.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alzheimer Disease / chemically induced
  • Alzheimer Disease / drug therapy*
  • Alzheimer Disease / metabolism
  • Alzheimer Disease / psychology*
  • Animals
  • Citrus / chemistry*
  • Cognition / drug effects*
  • Colchicine
  • Disease Models, Animal
  • Flavanones / administration & dosage*
  • Flavonoids / administration & dosage
  • Humans
  • Male
  • Maze Learning
  • Oxidative Stress / drug effects*
  • Plant Extracts / administration & dosage*
  • Rats
  • Rats, Wistar


  • Flavanones
  • Flavonoids
  • Plant Extracts
  • naringin
  • Colchicine