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Background and Objective: Alzheimer’s disease is a prevalent central nervous system disease with no definitive treatment till now. So, in the present study the effect of an important herbal medicine, withania somnifera (Ws), was investigated on progression of Alzheimer’s disease. Materials and Methods: We used intracerebroventricular streptozotocin (STZ) injection as a model for Alz...
Introduction: We investigated the sexually dimorphic effects of Dextromethorphan (DM) on cognitive and depression-like behaviors as well as on hippocampal histology in rats following acute administration. Methods: Wistar rats of both sexes were treated with 25 or 50 mg/kg of DM for 7 days via intraperitoneal injection. At the end of the administration, behavioral studies were performed on the ...
Background and Objective: Diabetes mellitus (DM) affects synaptic plasticity in the hippocampus, leading to impairments in learning and memory. L-carnosine, an endogenous dipeptide, is reported to exhibit anti-diabetic and antioxidant effects. Therefore, this study was designed to evaluate its effect on learning and memory in diabetic rats. Materials and Methods: In the present study, male Wis...
The effect of saffranal on intracerebroventricular strepto-zotocin-induced cognitive deficits in rat
Background and Objective: Intracerebroventricular (ICV) injection of streptozotocin (STZ) causes cognitive impairment in rats. The beneficial effect of saffron main component, safranal was investigated on ICV STZ-induced learning, memory, and cognitive impairment in male rats. Materials and Methods: For this purpose, rats were injected with ICV STZ bilaterally, on days 1 and 3 (3 mg/kg). The ST...
background and objective: temporal lobe epilepsy (tle) usually leads to memory deficit. in this study, we tried to assess the effect of withania somnifera extract on the impaired learning and memory in the intrahippocampal kainate model of tle in the rat. materials & methods: male rats (n=32) were divided into sham, extract+sham, kainite, and kainite+extract. for induction of epilepsy, uni...
Background and Objective: Ferulic acid is a polyphenolic compound derived from some fruit and different cereals. Previous studies have shown that this compound has antioxidant, anti-apoptosis, and differentiation properties in the nervous system. The aim of this study was to evaluate the effect of ferulic acid on the death of oligodendrocytes and demyelination in male C57B6 / J mice in cuprizon...
introduction: epilepsy is a chronic neurological disorder in which patients experience spontaneous recurrent seizures and deficiency in learning and memory. although the most commonly recommended therapy is drug treatment, some patients do not achieve adequate control of their seizures on existing drugs. new medications with novel mechanisms of action are needed to help those patients whose sei...
BACKGROUND Albizia adianthifolia (Schumach.) W. Wright (Fabaceae) is a traditional herb largely used in the African traditional medicine as analgesic, purgative, anti-inflammatory, antioxidant, antimicrobial and memory-enhancer drug. This study was undertaken in order to evaluate the possible cognitive-enhancing and antioxidative effects of the aqueous extract of A. adianthifolia leaves in the ...
Many environmental contaminants are introduced via the diet and may act as neurotoxins and endocrine disrupters, especially influencing growing organisms in early life. The purpose of this study was to examine whether dietary exposure of dams to fish naturally contaminated with xenobiotics, especially with polychlorinated biphenyls (PCBs) and heavy metals (e.g., mercury and lead), resulted in c...
The present study aimed at investigating the effects of chronic multiple stress on learning and memory functions of rats. Adult male Wistar rats were randomly divided into stressed and control groups. Rats in the stressed group were irregularly and alternately exposed to the situation of vertical revolution, sleep deprivation, noise stimulation, and night illumination 6 h per day for 6 weeks to...
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