نتایج جستجو برای: motor neurons

تعداد نتایج: 307059  

Background and Objective: Evaluation of degenerative changes of motoneurons and their related synapses can be useful in understanding the mechanisms of neurodegenerative diseases and their potential treatment. The present electron microscopic and immunohistochemical study investigates the axotomy-induced...

آی, جعفر, ابراهیمی باروق, سمیه, رحیمی, اعظم, کوچصفهانی, هما محسنی,

Background: Small molecule Purmorphamin (PMA) is the agonist of smoothened protein in Sonic hedgehog (Shh) signaling pathway. Effect of purmorphamin small molecule on differentiation of mesenchymal cells into bone tissue has been studied previously. Use of Shh causes progression of neural differentiation, and the differentiated cells express specific neural markers. Neurofilament (NF) and acety...

Journal: :iranian journal of basic medical sciences 0
gholam hossein farjah neurophysiology research center, department of anatomy, faculty of medicine, urmia university of medical sciences, urmia, iran shadi salehi faculty of medicine, urmia university of medical sciences, urmia, iran mohammad hasan ansari department of biochemistry, faculty of medicine, urmia university of medical sciences, urmia, iran bagher pourheidar neurophysiology research center, department of anatomy, faculty of medicine, urmia university of medical sciences, urmia, iran

objective(s): ischemia/reperfusion (i/r) injury of spinal cord is leading to the paraplegia observed. in this study, we investigated the protective effect of the saffron extract on spinal cord i/r injury. materials and methods: thirty five male sprague-dawley rats were divided into 5 groups: intact, sham surgery, normal saline (ns), low dose saffron aqua extract, high dose saffron aqua extract....

قمرانی, امیر, نصر آزادانی, سحر, یار محمدیان, احمد,

Recent studies have reported the discovery of a group of neurons in the motor cortex of the brain's gray. These neurons are called mirror neurons. Rizzolatti and colleagues in 1990s discovered the first mirror neuron system in monkeys in the University of Parma. Mirror neurons in brain are responsible for understanding the actions and intentions of others. The mirror neuron system has an import...

Journal: :Cell 2015
Timothy A. Machado Eftychios Pnevmatikakis Liam Paninski Thomas M. Jessell Andrew Miri

Spinal circuits can generate locomotor output in the absence of sensory or descending input, but the principles of locomotor circuit organization remain unclear. We sought insight into these principles by considering the elaboration of locomotor circuits across evolution. The identity of limb-innervating motor neurons was reverted to a state resembling that of motor neurons that direct undulato...

Eslimi Esfahani, Delaram, Hosseinynia, Talieh Sadat, Nabiuni, Mohammad, Oryan, Shahrbanoo,

Impaired motor functions were reported in cholestatic animals. This disorder in the function and death of motor neurons is highly dependent on changes in the environment around astrocytes and the blood-brain barrier, which is moderated by the aquaporin 4 protein. For this reason, the effects of cholestasis on motor cortex histology and morphology and aquaporin 4 protein levels were investigated...

Journal: :Nature Biotechnology 2011

Journal: :cell journal 0

introduction: nigrothalamocortical tract is one of the main outputs of the basal nuclei, but its role in motor disturbances is vauge, because there is little informations on its connection structure. some electrophysiological and pharmacological surveys report that none-dopaminergic outputs originate from reticular part of substantia nigra and end at thalamus. in this study the topographical co...

Journal: :Cell reports 2016
G Christopher Tan Esteban O Mazzoni Hynek Wichterle

The motor neuron progenitor domain in the ventral spinal cord gives rise to multiple subtypes of motor neurons and glial cells. Here, we examine whether progenitors found in this domain are multipotent and which signals contribute to their cell-type-specific differentiation. Using an in vitro neural differentiation model, we demonstrate that motor neuron progenitor differentiation is iterativel...

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