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Involvement of PPAR-gamma in curcumin-mediated beneficial effects in experimental dementia

  • Puneet Rinwa
  • Baljinder Kaur
  • Amteshwar Singh Jaggi
  • Nirmal SinghEmail author
ORIGINAL ARTICLE

Abstract

The present study was undertaken to investigate the possible mechanism of curcumin-mediated beneficial effects in memory deficits associated with experimental dementia. Dementia was induced in Swiss albino mice by administrating streptozotocin (3 mg kg−1) intracerebroventricularly on first and third day. Morris water maze test was employed to assess learning and memory of the animals. Biochemical analysis of brain homogenate was performed to assess brain acetyl cholinesterase (AChE) activity and total oxidative stress. Streptozotocin (STZ) produced a significant decrease in water maze performance of mice indicative of impairment in spatial reference memory. Curcumin (20 mg/kg p.o. daily for 14 days) successfully attenuated STZ-induced memory deficits. Higher levels of brain AChE activity and oxidative stress were observed in STZ-treated animals, which were significantly attenuated by curcumin. Furthermore, the noted beneficial effect of curcumin on STZ-induced dementia was significantly abolished by pretreatment with PPAR-γ receptor antagonist bisphenol-A-diglycidyl ether, i.e., BADGE (30 mg/kg intraperitoneally (i.p.)). It may be concluded that the beneficial effects of curcumin are mediated through the activation of PPAR-γ receptors.

Keywords

Curcumin Streptozotocin Dementia Alzheimer Morris water maze 

Notes

Acknowledgments

The authors would like to acknowledge Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala for providing technical facilities.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Puneet Rinwa
    • 1
  • Baljinder Kaur
    • 1
  • Amteshwar Singh Jaggi
    • 1
  • Nirmal Singh
    • 1
    Email author
  1. 1.Department of Pharmaceutical Sciences and Drug ResearchPunjabi UniversityPatialaIndia

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