Journal
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
Volume 388, Issue 11, Pages 1151-1161Publisher
SPRINGER
DOI: 10.1007/s00210-015-1148-8
Keywords
Aluminum chloride; Diltiazem; Oxidative stress; Dementia; Morris water maze
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Funding
- Chandigarh College of Pharmacy, Landran (India)
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Many studies report that heavy metals such as aluminum are involved in amyloid beta aggregation and neurotoxicity. Further, high concentration of aluminum in the brain deregulates calcium signaling which contributes to synaptic dysfunction and halts neuronal communication which ultimately leads to the development of Alzheimer's disease. Recently, diltiazem, a calcium channel blocker clinically used in angina, is reported to decrease amyloid beta production by inhibiting calcium influx, decreasing inflammation and oxidative stress. However, the probable role of this drug in aluminum chloride (AlCl3)-induced experimental dementia is yet to be explored. Therefore, the present study is designed to investigate the effect of AlCl3-induced dementia in mice. Morris water maze test and elevated plus maze were utilized to evaluate learning and memory. Various biochemical estimations including brain acetylcholinesterase activity (AChE), brain total protein, thiobarbituric acid-reactive species (TBARS) level, reduced glutathione (GSH) level, nitrate/nitrite, and superoxide dismutase (SOD) were measured. AlCl3 significantly impaired learning and memory and increased brain AChE, brain total protein, TBARS, and nitrate/nitrite and decreased brain GSH or SOD. On the other hand, treatment with diltiazem significantly reversed AlCl3-induced behavioral and biochemical deficits. The present study indicates the beneficial role of diltiazem in AlCl3-induced dementia.
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