conclusions these data suggest that single bilateral microinjection of aβ (25-35) could impair memory and can be used as an ad model in wistar rats. results the results showed that aβ (25-35) significantly impaired both step-through latency and time in dark compartment in the passive avoidance task. background alzheimer's disease (ad) is the most common form of dementia that leads to neurotoxic...

In Japan, people using water from the well contaminated with high-level arsenic developed neurological, mostly cerebellar, symptoms, where diphenylarsinic acid (DPAA) was a major compound. Here, we investigated the adverse effects of developmental exposure to 20mg/l DPAA in drinking water (early period [0-6 weeks of age] and/or late period [7-12]) on behavior and cerebellar development in male ...

Entorhinal cortex (EC) is one of the first Entorhinal cortex (EC) is one of the first cerebral regions affected in Alzheimer’sdisease (AD). The pathology propagates to neighboring cerebral regions through a prion-likemechanism. In AD, intracellular calcium dyshomeostasis is associated with endoplasmicreticulum (ER) stress. This study was designed to examine hippocampal ER stre...

Entorhinal cortex (EC) is one of the first Entorhinal cortex (EC) is one of the first cerebral regions affected in Alzheimer’sdisease (AD). The pathology propagates to neighboring cerebral regions through a prion-likemechanism. In AD, intracellular calcium dyshomeostasis is associated with endoplasmicreticulum (ER) stress. This study was designed to examine hippocampal ER stre...

intracerebroventricular (icv) injection of streptozotocin (stz) in rats is followed by long-term and progressive deficits in learning, memory, and cognitive performance which is somewhat similar to sporadic alzheimer’s disease (sad). epidemiological studies suggest that non-steroidal anti-inflammatory drugs (nsaids) could delay or slow the clinical expression of sad. therefore, the beneficial e...

In addition to their well-known genomic effects via intracellular receptors, androgens rapidly alter neuronal excitability through a nongenomic pathway. The nongenomic effect of testosterone, as the main androgen, apart from its traditional effects, was assessed in one of the fundamental centers of learning and memory, the hippocampus, on long-term memory (LTM) in passive avoidance conditioning...

Animal models of human anxiety often invoke a conflict between approach and avoidance. In these, a key behavioral assay comprises passive avoidance of potential threat and inhibition, both thought to be controlled by ventral hippocampus. Efforts to translate these approaches to clinical contexts are hampered by the fact that it is not known whether humans manifest analogous approach-avoidance d...