title: Taurine ameliorates neurobehavioral, neurochemical and immunohistochemical changes in sporadic dementia of Alzheimer's type (SDAT) caused by intracerebroventricular streptozotocin in rats.
abstract: Oxidative loads in the brain are involved in age related impairments like learning and memory as well as neurodegeneration. Taurine, the most abundant free amino acid in humans has many potential health benefits through its anti-oxidant and anti-inflammatory properties. Therefore, we investigated the neuroprotective potential of taurine on oxidative stress, neuronal loss and memory impairments in streptozotocin model of cognitive impairments in rats. The cognitive impairment was developed by giving single intracerebroventricular (ICV) injection of streptozotocin (STZ) 3 mg/kg body weight bilaterally. An increased latency and path length was observed in ICV-STZ group animals as compared to sham group animals and these were inhibited significantly in STZ group pre-treated with taurine (50 mg/kg body weight orally once daily for 15 days). Moreover, the significantly depleted content of GSH and elevated level of thiobarbituric acid reactive substances (TBARS) in ICV-STZ group animals were protected significantly with pre-treatment of taurine. The activity of antioxidant enzymes, glutathione peroxidase, glutathione reductase, glutathione-S-transferase, catalase, and superoxide dismutase was decreased in STZ group as compared to sham group and pre-treatment of STZ group with taurine has protected their activities significantly. Furthermore, the increased activity of acetylcholine esterase and decreased expression of choline acetyl transferase were attenuated by the pre-treatment of taurine. Taurine also protected the morphology of the hippocampal pyramidal neurons. This study concludes that the prophylactic intervention of taurine may be used to prevent the deterioration of cognitive functions and neurobehavioral activities, often associated with the generation of free radicals.
authors.affiliation: Neurotoxicology Laboratory, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi, 110062, India.
authors.forename: Hayate
authors.initials: H
authors.lastname: Javed
authors.forename: Andleeb
authors.initials: A
authors.lastname: Khan
authors.forename: Kumar
authors.initials: K
authors.lastname: Vaibhav
authors.forename: Mohd
authors.initials: M
authors.lastname: Moshahid Khan
authors.forename: Ajmal
authors.initials: A
authors.lastname: Ahmad
authors.forename: Md
authors.initials: M
authors.lastname: Ejaz Ahmad
authors.forename: Ashafaq
authors.initials: A
authors.lastname: Ahmad
authors.forename: Rizwana
authors.initials: R
authors.lastname: Tabassum
authors.forename: Farah
authors.initials: F
authors.lastname: Islam
authors.forename: Mohammed M
authors.initials: MM
authors.lastname: Safhi
authors.forename: Fakhrul
authors.initials: F
authors.lastname: Islam
mesh_terms: D000110:Acetylcholinesterase / Q000187:drug effects / Q000378:metabolism; D000544:Alzheimer Disease / Q000139:chemically induced / Q000188:drug therapy* / Q000378:metabolism*; D000818:Animals; D006624:Hippocampus / Q000187:drug effects / Q000378:metabolism; D007150:Immunohistochemistry; D057967:Infusions, Intraventricular; D008297:Male; D018782:Maze Learning / Q000187:drug effects / Q000502:physiology; D018384:Oxidative Stress / Q000187:drug effects*; D051381:Rats; D017208:Rats, Wistar; D013311:Streptozocin / Q000008:administration & dosage; D013654:Taurine / Q000627:therapeutic use*
chemical_list: D013654:Taurine; D013311:Streptozocin; D000110:Acetylcholinesterase