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Characterization of small-field bistratified amacrine cells in macaque retina labeled by antibodies against synaptotagmin-2.
J Comp Neurol 2013; 521(3):709-24JC

Abstract

Macaque retinae were immunostained with monoclonal antibodies directed against the protein synaptotagmin-2 (Syt2). Syt2 was localized in a population of small-field amacrine cells, whose cell bodies formed a regular mosaic within the inner nuclear layer, indicating they represent a single amacrine cell type. The labeled amacrine cells had a bistratified appearance with a dense dendritic plexus in the OFF-layer and only a few lobular processes extending into the ON-layer of the inner plexiform layer, similar to A8 amacrine cells described in cat and human retina. Syt2-labeled cells were immunoreactive for glycine but lacked immunoreactivity for γ-aminobutyric acid (GABA), suggesting they use glycine as their neurotransmitter. The density of these cells increases from ∼200/mm(2) in peripheral retina to ∼1,400/mm(2) in central retina. Their bipolar cell input was studied by immunolabeling experiments using various bipolar cell markers combined with CtBP2, a marker of presynaptic ribbons. Our data show that Syt2-labeled amacrine cells receive input from both OFF and ON cone bipolar cells, as well as from rod bipolar cells. The OFF input is dominated by the diffuse bipolar cell DB1 (44%) and the OFF midget bipolar cell (38%). Here we describe a population of bistratified small-field amacrine cells closely resembling A8 amacrine cells and their cone-dominated bipolar cell input. J. Comp. Neurol. 521:709-724, 2013. © 2012 Wiley Periodicals, Inc.

Authors+Show Affiliations

Max Planck Institute for Brain Research, D-60528 Frankfurt a.M., Germany.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22821706

Citation

Neumann, Sonja, and Silke Haverkamp. "Characterization of Small-field Bistratified Amacrine Cells in Macaque Retina Labeled By Antibodies Against Synaptotagmin-2." The Journal of Comparative Neurology, vol. 521, no. 3, 2013, pp. 709-24.
Neumann S, Haverkamp S. Characterization of small-field bistratified amacrine cells in macaque retina labeled by antibodies against synaptotagmin-2. J Comp Neurol. 2013;521(3):709-24.
Neumann, S., & Haverkamp, S. (2013). Characterization of small-field bistratified amacrine cells in macaque retina labeled by antibodies against synaptotagmin-2. The Journal of Comparative Neurology, 521(3), pp. 709-24. doi:10.1002/cne.23201.
Neumann S, Haverkamp S. Characterization of Small-field Bistratified Amacrine Cells in Macaque Retina Labeled By Antibodies Against Synaptotagmin-2. J Comp Neurol. 2013 Feb 15;521(3):709-24. PubMed PMID: 22821706.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of small-field bistratified amacrine cells in macaque retina labeled by antibodies against synaptotagmin-2. AU - Neumann,Sonja, AU - Haverkamp,Silke, PY - 2011/10/11/received PY - 2012/05/25/revised PY - 2012/07/19/accepted PY - 2012/7/24/entrez PY - 2012/7/24/pubmed PY - 2013/6/5/medline SP - 709 EP - 24 JF - The Journal of comparative neurology JO - J. Comp. Neurol. VL - 521 IS - 3 N2 - Macaque retinae were immunostained with monoclonal antibodies directed against the protein synaptotagmin-2 (Syt2). Syt2 was localized in a population of small-field amacrine cells, whose cell bodies formed a regular mosaic within the inner nuclear layer, indicating they represent a single amacrine cell type. The labeled amacrine cells had a bistratified appearance with a dense dendritic plexus in the OFF-layer and only a few lobular processes extending into the ON-layer of the inner plexiform layer, similar to A8 amacrine cells described in cat and human retina. Syt2-labeled cells were immunoreactive for glycine but lacked immunoreactivity for γ-aminobutyric acid (GABA), suggesting they use glycine as their neurotransmitter. The density of these cells increases from ∼200/mm(2) in peripheral retina to ∼1,400/mm(2) in central retina. Their bipolar cell input was studied by immunolabeling experiments using various bipolar cell markers combined with CtBP2, a marker of presynaptic ribbons. Our data show that Syt2-labeled amacrine cells receive input from both OFF and ON cone bipolar cells, as well as from rod bipolar cells. The OFF input is dominated by the diffuse bipolar cell DB1 (44%) and the OFF midget bipolar cell (38%). Here we describe a population of bistratified small-field amacrine cells closely resembling A8 amacrine cells and their cone-dominated bipolar cell input. J. Comp. Neurol. 521:709-724, 2013. © 2012 Wiley Periodicals, Inc. SN - 1096-9861 UR - https://www.unboundmedicine.com/medline/citation/22821706/Characterization_of_small_field_bistratified_amacrine_cells_in_macaque_retina_labeled_by_antibodies_against_synaptotagmin_2_ L2 - https://doi.org/10.1002/cne.23201 DB - PRIME DP - Unbound Medicine ER -