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01.07.2021 | History

5 edition of Co-existence and co-release of classical neurotransmitters found in the catalog.

Co-existence and co-release of classical neurotransmitters

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      • Includes bibliographical references and index.

        StatementSpringer
        PublishersSpringer
        Classifications
        LC Classifications2009
        The Physical Object
        Paginationxvi, 74 p. :
        Number of Pages66
        ID Numbers
        ISBN 100387096213
        Series
        1nodata
        2
        3

        nodata File Size: 5MB.


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ACTIVATION OF THE MFS NORMALLY PRODUCES GABAERGIC RESPONSES DURING DEVELOPMENT The aforementioned data suggested the possibility that MFs of young rodents may naturally release GABA while adult animals lose this capability. Previous studies proposed GABA concentrations ranging from 7 mM in somata ; to 50—150 mM in nerve terminals. These findings provide strong morphological evidence for synaptic co-existence of glutamatergic and GABAergic transporters in adult glutamatergic MF terminals.

The key examples are the plasma membrane glutamate EAAT4 and EAAT3 transporter subtypes, which are localized on GABAergic Purkinje cells in the cerebellum ; and on hippocampal GABAergic neurons, respectively. Moreover, these authors showed that the protein was both in the DG and MF terminals. In a recent work, the presynaptic co-localization of VGLUTs and VGAT proteins in glutamatergic hippocampal MF terminals was conclusively demonstrated.

PLoS ONE 4: e388 1—11 10. Therefore, activation of GC during the blockade of glutamate-mediated transmission prevents both excitatory and inhibitory responses from appearing in CA3. Five high-affinity membrane glutamate transporters have been cloned from mammalian tissue: astrocyte-specific glutamate transporter GLASTglutamate transporter 1 GLT1excitatory amino acid carrier 1 EAAC1excitatory amino acid transporter 4 EAAT4 and 5 EAAT5.

Co-existence and co-release of classical neurotransmitters present paper deals with transmitter substances, peptides or classical transmitters, co-existing with the two structurally related peptides VIP and PACAP and the possible functional implications of this co-existence. C Scheme depicting the variations involved in synaptic co-existence of VNTs of opposing function blue-VGLUT, green-VGAT in the same vesicle and in different vesicle populations with distinct above or combined below release sites orange labeled within axon terminal.

From P6, the co-expression of the glutamatergic and GABAergic phenotypes in a single pathway provides an efficient and rapid synergism on their target cells during development. The presence of markers of the GABAergic phenotype in the GCs should not necessarily make them GABAergic and inhibitory.

In this context, it has been shown that amacrine cells in the retina co-release ACh and GABA by distinct SV populations.

Presynaptic aspects of the coexistence of classical neurotransmitters and peptides

In GABAergic interneurons glutamate can be synthesized via a different enzymatic route, involving glutamate dehygrogenaseaspartate aminotransferaseand glutaminase. Autaptic cultures of single hippocampal granule cells of mice and rats. Thereby the GABAergic or glycinergic phenotype of neurons is defined.

In Xenopus tadpole spinal cord, co-released ACh from glutamatergic excitatory interneurons dINs activate the nicotinic receptors which may help maintain tonic NMDA receptor mediated membrane potential depolarization that is critical for persistent swimming.