Introduction: The brain renin-angiotensin system (RAS) has been reported having a pathological role in age-related impairment in learning and memory. Therefore, angiotensin converting enzyme inhibitors (ACEi) are expected to have positive effects on memory. Longtime treatment with captopril (an angiotensin converting enzyme inhibitor) significantly attenuates the age-related impairment in learn...

It is attempted to extend a two-step without memory method to it's with memory. Then, a new two-step derivative free class of without memory methods, requiring three function evaluations per step, is suggested by using a convenient weight function for solving nonlinear equations. Eventually, we obtain a new class of methods by employing a self-accelerating parameter calculated in each iterative...

background: the spice zingiber officinale or ginger possesses antioxidant activity and neuroprotective effects. in this study we hypothesized that treatment with hydroethanolic extract of ginger (50, 100 and 200 mg/kg, p.o) would effect on the hyoscine-induced memory impairment in rats. methods: in this experimental study 64 male wistar rats were divided into eight groups (8 rats in each group)...

introduction: social inequality may have a significant negative effect on health. there are some evidences that social inequality and stressful conditions could lead to development and progression of various disorders. on the other hand, the results of some research studies have shown that reducing the consumed calorie could prolong the lifetime. in addition, limiting the consumed calorie could...

abstract  introduction: intracerebroventricular (icv) injection of streptozotocin (stz) causes cognitive impairment in rats. the beneficial effect of genistein (gen) was investigated on icv stz-induced learning, memory, and cognitive impairment in male rats. methods: for this purpose, rats were injected with icv stz bilaterally, on days 1 and 3 (3 mg/kg). the stz-injected rats received gen (1 m...

introduction: the plethora of studies indicated that there is a cross talk relationship between harmaline and serotonergic (5-ht) system on cognitive and non-cognitive behaviors. thus, the purpose of this study is to assess the effects of hippocampal 5-ht4 receptor on memory acquisition deficit induced by harmaline.  methods: harmaline was injected peritoneally, while 5-ht4 receptor agonist (rs...

dementia is one of the age related mental problems and a characteristic symptom of various neurodegenerative disorders including alzheimer’s disease. desmodium gangeticum dc. (leguminosae) is widely used in ayurveda for treating various neurological disorders. in the present study, the effectiveness of aqueous extract of d. gangeticum in attenuating scopolamine-induced amnesia in mice was inves...

objective(s): parkinson's disease (pd) is a progressive neurological disorder associated with motor disabilities and cognitive dysfunction as well. evidence indicates that pd occurs less frequently in women than men, confirming a role for steroid hormones in protection of dopaminergic nigrostriatal neurons. it is reported that soy genistein, an estrogen agonist phytoestrogen, display neuro...

over the past decade, there have been several studies showing autobiographical memory retrieval and problem‑solving deficits in depressed population. the present study aimed to first to examine the roles of autobiographical memory specificity and problemsolving effectiveness in iranian depressed people with or without suicide ideation and secondly, to test the correlations between autobiographi...

learning ability and memory duration are two inseparable factors which can increase theefficiency of a living organism during its lifetime. trichgramma brassice bezdenko (hym.:trichogrammatidae) is a biological control agent widely used against different pest species.this research was conducted to study the olfactory associative learning ability and memoryduration of t. brassicae under laborato...