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Biological Trace Element Research

, Volume 103, Issue 1, pp 59–68 | Cite as

Sodium selenite stimulates neurobehavior and neurochemical activities in rats

  • Abdullah Shafique Ahmad
  • Suhaila Zia
  • Iqbal Sayeed
  • Mubeen Ahmad Ansari
  • Muzamil Ahmad
  • Sofiyan Salim
  • Seema Yousuf
  • Fakhrul Islam
Original Articles

Abstract

The effect of 0.05, 0.1, and 0.2 mg sodium selenite/kg body weight ip on the activities of neurobehavioral, acetyl cholinesterase, monoamine oxidase, and the content of dopamine and its metabolites in circadian rhythm centers of male Wistar rats was studied after 7 d of treatment. The results show an appreciable increase in locomotion, stereo-events, distance traveled, and average speed at the dose of 0.1 and 0.2 mg sodium selenite/kg. The data have shown hyperactivity of animals with various doses of sodium selenite, and it was significant and dose-dependent after 3 d of treatment. The activity of acetylcholinesterase (AChE) was inhibited dose dependently, and it was significant in preoptic area with 0.1 or 0.2 mg sodium selenite/kg. Conversely, in the posterior hypothalamus its activity was significantly elevated with the dose of 0.2 mg sodium selenite/kg, but its alteration in brain stem was not significant. Monoamine oxidase (MAO) activity was increased in preoptic area with the dose of 0.1 mg sodium selenite/kg, but its alteration in posterior hypothalamus and brain stem was not significant. The content of dopamine (DA), 3,4-dihydroxyphenyl acetic acid (DOPAC), and homovanilic acid (HVA) was elevated dose dependently and it was significant with the doss of 0.1 and 0.2 mg sodium selenite/kg, but the content of DOPAC and HVA in posterior hypothalamus was not significant with the dose of 0.1 mg sodium selenite/kg.

Index Entries

Sodium selenite dopamine DOPAC HVA AChE MAO circadian rhythm centers 

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Copyright information

© Humana Press Inc 2005

Authors and Affiliations

  • Abdullah Shafique Ahmad
    • 1
  • Suhaila Zia
    • 1
  • Iqbal Sayeed
    • 1
  • Mubeen Ahmad Ansari
    • 1
  • Muzamil Ahmad
    • 1
  • Sofiyan Salim
    • 1
  • Seema Yousuf
    • 1
  • Fakhrul Islam
    • 1
  1. 1.Neurotoxicology Laboratory, Department of Medical Elementology and Toxicology, Jamia HamdardHamdard UniversityNew DelhiIndia

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