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KMID : 0381919950250040001
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Korean Journal of Microscopy
1995 Volume.25 No. 4 p.1 ~ p.8
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Ultrastructural Pattern of Synapses in the Rat Neostriatum during Postnatal Development
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Lee Hee-Lai
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Abstract
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This study was performed to analyze the morphological changes of synapses during early postnatal periods. Neonatal rats were grouped by 3, 7, 14, 21, 28 and 42day old, and observed the ultrastructural pattern of the synapses in the neostriatum by transmission electron microscope. 1. The number of synapse, the length of postsynaptic thickening and the amount of synaptic vesicles markedly increase during postnatal development 2. The proportion of asymmetric and curved synapses gradually increase by developmental periods. From the above results, it is suggested that the size of synapse increase during post-natal period, and asymmetric synapse are formed from the symmetric type and curved synapse are formed from the plane type.
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KEYWORD
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Rat, Neostriatum, Synapse, Ultrastructure
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