Context: Vascular dementia (VaD) is the second most common type of after Alzheimer’s disease worldwide. a neurodegenerative disorder characterized by gradual cognitive impairment. Ischemic and hemorrhagic strokes result in VaD, markedly distributing cerebral blood flow decreasing patients’ memory performance. Due to their high energy demands, neurons are more sensitive cellular architecture cha...

BACKGROUND Achyranthes bidentata Blume (A. bidentata) is a commonly prescribed Chinese medicinal herb. A. bidentata polypeptides (ABPP) is an active composite constituent, separated from the aqueous extract of A. bidentata. Our previous studies have found that ABPP have the neuroprotective function in vitro and in rat middle cerebral artery occlusion (MCAO) model in attenuating the brain infrac...

background and aim: although recent research has revealed the positive effects of bilin­gualism on children's cognitive abilities, little information is available on the relationship bet­ween bilingualism and working memory. working memory is generally composed of four dis­tinct parts, among which the phonological loop plays an important role in speech and language development, reading skills, ...

cerebrovascular accidents rank first in the frequency and importance among all neurological disease. although a number of studies had shown increased level of the high sensitive c-reactive protein (hs-crp) in patients with ischemic stroke, the association of increased hs-crp with various type of stroke especially the assessment hs-crp level in ischemic and hemorrhagic stroke have not been inves...

objective: the results of the previous studies on the correlation between plasma levels of homocysteine (hcy) and ischemic stroke have been controversial. the aim of the present study is to investigate this correlation meticulously observing risk factors for the ischemic stroke as well as factors affecting the plasma levels of hcy. method: a case-control study was conducted between 2005-2006 wi...

objective(s): electrical inhomogeneity between ischemic and non ischemic myocardium is the basis of arrhythmia which occurs following coronary artery occlusion. the leakage of potassium from the ischemic region to the non ischemic region is very effective in the generation of these arrhythmias. the aim of this study is to research the effect of atp-dependent potassium (katp) channel blocker (gl...

increased levels of proinflammatory cytokines have been recorded after the onset  of transient  or  permanent  brain  ischemia and  are  usually associated with  exacerbation  of ischemic injury. embolic stroke model is more relevant to the pathophysiological situation in such  patients, because the  majority of  ischemic injuries in humans  are induced  by old thrombi that originate from the h...

Introduction: Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-2 (Nox2) is one of the predominant sources of ROS production during myocardial ischemia-reperfusion and can be induced by angiotensin II. The evidence suggests that pharmacological blockers of renin-angiotensin system can exert direct tissue effects independent of their ability to regulate blood pressure. The mechanism...

Background: Calcium overload and free radical mediated damage in the mitochondria is the most important pathological changes associated with myocardial ischemic-reperfusion injury. The verapamil post-treatment has been previously reported to prevent reperfusion-induced myocardial injury but functional recovery may be delayed due to the drug's inherent direct myocardial depression effect. In the...

Studies have shown that electroacupuncture (EA) ameliorates learning and memory after ischemic injury. However, there have been few studies elucidating the mechanisms of EA on learning and memory in cerebral hypoperfusion. In this study, we explored the cAMP response element-binding protein (CREB) signaling pathway-mediated antiapoptotic action involved in EA-induced improvement of learning and...