神经元和神经胶质细胞-胶质细胞.ppt
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1、Neuron : Supporting cells : CNS : neuroglia (glia) PNS : Schwann cells and satellite cells Functions : physical support electrical insulation metabolic exchange blood-brain barrier,Composition of Nervous Tissue,Neuroglia in the CNS,Able to replicate! Importance in nervous system function is VASTLY u
2、nderestimated! Evidence is mounting: Nurturing role Signaling role (Memory?) Inflammation Pain Many more to come!,Neuroglia: Distinguishing Features,Presence of tight junctions between the endothelial cells One of the notable features of endothelial cells in comparison to other cell is the lack of p
3、inocytic vesicles Selective permeability to molecules based on their molecular weight and lipid solubility Presence of specific markers Rich in two enzymes: gamma glutamyl transpeptidase (GGTP) (for amino acid transport) and alkaline phosphatase (transport of phsopahte ions) used as marker for BBB.
4、Others: glucose transporter (GLUT-1); endothelial barrier antigen (EBA; unknown function) and antigen recognized by the MRC OX-47 monoclonal antibody (important for cell-to-cell adhesion); transferrin receptor (transport of ferric ions).,Properties of Blood Brain Barriers,BBB,1. Neurons have TWO “pr
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- 关 键 词:
- 神经元 神经 胶质 细胞
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