نتایج جستجو برای: cortex
تعداد نتایج: 144524 فیلتر نتایج به سال:
Introduction: Psychological stresses influence brain functions such as learning and memory. Environmental factors like types and durations of stress affect brain responsiveness. This study investigated the effects of two subchronic social and isolation stresses on learning, memory, adrenal glands weight and corticosterone levels in the hippocampus and frontal cortex. Methods: Eighteen male ...
In multiple sclerosis Oligodendrocytes are obliterated by the immune system. neural stem/ progenitor cells (NS/P Cs) have the capacity to differentiate into mature myelinating oligodendrocytes. In embryonic mouse cortex oligodendrocyte progenitor cells (OPCs) are more abundant than the ganglionic eminence. Doing gene set enrichment analysis using DAVID and Panther websites it was shown that Gpr...
Low frequency stimulation (LFS) is a potential alternative therapy for epilepsy. However, it seems that the anticonvulsant effects of LFS depend on its target sites in the brain. Thus, the present study was designed to compare the anticonvulsant effects of LFS administered to amygdala, piriform cortex and substantia nigra on amygdala kindling acquisition. In control group, rats were kindled in ...
Background: Prenatal intoxication with trimethyletin (TMT) induces widespread neuronal death in the central nervous system by inducing oxidative stress. The aim of this study was to evaluate the antioxidant effect of gallic acid (GA) on the neuronal density of the entorhinal cortex, hippocampal pyramidal cells and oxidative stress parameters in the fetal forebrain following TMT intoxication. ...
The short and long term effects of chromium toxicity on brain catecholamines and acetylcholinesterase levels were investigated. Rats were injected daily with varying amounts of chromium. The short term (2 h) administration of chromium (8 mmol/kg) reduced catecholamines level of cerebellum, mid-brain and brain-cortex by 22.8, 19.4 and 21.2% respectively. Acetylcholinesterase activity was also re...
The aim of this paper is to develop suitable models for the phenomenon cell blebbing, which allow computational predictions mechanical effects including crucial interaction membrane and actin cortex. For sake we resort a two phase-field model that uses diffuse descriptions both cortex, in particular allows description via linker protein densities. Besides detailed modelling discuss some energet...
Abstract The neural representation of the body is easily altered by integration multiple sensory signals in brain. “rubber hand illusion” (RHI) one most popular experimental paradigms to investigate this phenomenon. During illusion, a feeling ownership rubber created. Some studies have shown that somatosensory processing brain attenuated when RHI occurs. However, it unknown where attenuation He...
Background & Aims : Hair follicle morphogenesis is controlled by complex reprocical ectodermal–mesenchymal interactions regulated by molecular mechanisms. In addition, glycoconjugates are known to be important for molecular interactions during developmental processes. The aim of this research was to study glcoconjugate terminal sugars distributions and changes during rat hair follicle morph...
Introduction & Objective: In the CNS, adenosine is known to suppress repetitive neuronal Firing, suggesting a role as an endogenous modifier of seizures. Indeed, intracerebral adenosine concentrations rise acutely during seizure activity and are thought to be responsible for terminating seizures and establishing a period of post-ictal refractoriness. However, it is unclear whether this suppre...
Drug abuse has been claimed to cause the loss of neurons and reduction of volume in both the adult and developing brain. This study examined cortex volumes in cerebrum and cerebellum of male rats that were dependent on morphine using unbiased stereological counting methods and systematic random sampling technique. Our goal was to test whether short time exposure to morphine can affect the corte...
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