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  • Title: Chandelier cell axons are immunoreactive for GAT-1 in the human neocortex.
    Author: DeFelipe J, González-Albo MC.
    Journal: Neuroreport; 1998 Feb 16; 9(3):467-70. PubMed ID: 9512391.
    Abstract:
    We have examined the pattern of immunostaining for the high-affinity GABA transporter GAT-1 in the human temporal neocortex. Immunocytochemistry for GAT-1 labels terminal-like puncta in the neuropil and around unstained cell bodies. The characteristic terminal portions of chandelier cell axons (Ch-terminals, which form multiple inhibitory GABAergic synaptic contacts with the axon initial segments of pyramidal cells) were among the strongest immunocytochemically stained elements for GAT-1. Since Ch-terminals are immunoreactive for the calcium-binding protein parvalbumin, experiments were carried out to study the co-localization of GAT-1 and parvalbumin in Ch-terminals. These experiments showed that the vast majority of Ch-terminals immunoreactive for GAT-1 were also immunoreactive for PV. We concluded that GAT-1 transporter may have an important functional role in controlling pyramidal cell activity.
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