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Released GABA is removed from the synaptic cleft by two GABA transporters (GATs), GAT-1 and GAT-3, and their dysfunction affects brain functions. The present study aimed to reveal the ontogeny of the GABA-removal system by examining the immunohistochemical localization of GAT-1 and GAT-3 in the embryonic and postnatal mouse cervical spinal cord. In the dorsal horn, GAT-1 was localized within the presynapses of inhibitory axons after embryonic day 15 (E15), a little prior to GABAergic synapse formation. The GAT-1-positive dots increased in density until postnatal day 21 (P21). By contrast, in the ventral horn, GAT-1-positive dots were sparse during development, although many transient GABAergic synapses were formed before birth. GAT-3 was first localized within the radial processes of radial glia in the ventral part on E12 and the dorsal part on E15. The initial localization of the GAT-3 was almost concomitant with the dispersal of GABAergic neurons. GAT-3 continued to be localized within the processes of astrocytes, and increased in expression until P21. These results suggested the following: (1) before synapse formation, GABA may be transported into the processes of radial glia or immature astrocytes by GAT-3. (2) At the transient GABAergic synapses in the ventral horn, GABA may not be reuptaken into the presynapses. (3) In the dorsal horn, GABA may start to be reuptaken by GAT-1 a little prior to synapse formation. (4) After synapse formation, GAT-3 may continue to remove GABA from immature and mature synaptic clefts into the processes of astrocytes. (5) Development of the GABA-removal system may be completed by P21.", "subitem_description_type": "Other"}, {"subitem_description": "論文", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "en", "subitem_1522300316516": "Elsevier"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "eng"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/46548"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0306-4522"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "en", "subitem_1522650091861": "Neuroscience"}]}, "item_1617187056579": {"attribute_name": 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