Journal article
Functional N-Methyl-D-Aspartate Receptors Are Expressed in Cone-Driven Horizontal Cells in Carp Retina
Neuro-Signals, v 15(4), pp 174-179
01 Jan 2006
PMID: 17047395
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Glutamate works as a major excitatory neurotransmitter in the vertebrate retina. Whole-cell recordings made from isolated carp cone horizontal cells (H1 cells) showed that N-methyl-D-aspartate (NMDA), co-applied with glycine, induced inward currents that were blocked by the NMDA receptor competitive antagonist D-2-amino-5-phosphonopentanoate (D-AP5) and 5,7-dichlorokynurenic acid (DCKA), a selective NMDA receptor antagonist acting at the glycine site on the NMDA receptor complex. Moreover, calcium imaging showed that NMDA caused a significant elevation of intracellular calcium levels ([Ca2+]i) of H1 cells, which was also blocked by D-AP5. In contrast, neither inward currents nor changes in [Ca2+]i could be induced by NMDA in rod horizontal cells (H4 cells). Intracellular recordings made from H1 cells in the isolated retina, superfused with Ringer’s containing 1 mM Mg2+, in the dark demonstrated that NMDA reduced the light-off overshoot of H1 cells. We therefore conclude that the functional NMDA receptor is expressed in carp H1 cells, from which this receptor has been thought to be absent, and this receptor may play a role in modulating cone-driven signal of horizontal cells in the dark.
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Details
- Title
- Functional N-Methyl-D-Aspartate Receptors Are Expressed in Cone-Driven Horizontal Cells in Carp Retina
- Creators
- Yin Shen - Fudan UniversityMin ZhangYing JinXiong-Li Yang
- Publication Details
- Neuro-Signals, v 15(4), pp 174-179
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Neurobiology and Anatomy
- Web of Science ID
- WOS:000247236100002
- Scopus ID
- 2-s2.0-34250206615
- Other Identifier
- 991020545122404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Biochemistry & Molecular Biology
- Biophysics
- Cell Biology
- Neurosciences