1995
DOI: 10.1002/cne.903550306
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Distribution and spatial geometry of dopamine interplexiform cells in the retina. II. External arborizations in the adult rat and monkey

Abstract: The morphology and distribution of dopaminergic interplexiform cells in adult rat and monkey retinas were analyzed to determine any correlation with the function of dopamine in the outer retinal layers. The retinas were processed as whole mounts for tyrosine hydroxylase immunohistochemistry. There was a network formed by the sclerally directed processes of interplexiform cells in the inner nuclear, outer plexiform, and outer nuclear layers running throughout the retina. Their density was higher in the superior… Show more

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Cited by 22 publications
(20 citation statements)
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“…Additional VMAT2-positive varicosities were very sparsely distributed in the inner nuclear layer (INL) and the middle portions of the inner plexiform layer. The distally directed processes emerge from the large DA neurons (Savy et al, 1995), and it is these neurons that are the main focus of the present study. Some or all of the processes in the central portion of the inner plexiform layer may derive from the small, type II TH-immunoreactive neurons (Mariani and Hokoc, 1988).…”
Section: Discussionmentioning
confidence: 99%
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“…Additional VMAT2-positive varicosities were very sparsely distributed in the inner nuclear layer (INL) and the middle portions of the inner plexiform layer. The distally directed processes emerge from the large DA neurons (Savy et al, 1995), and it is these neurons that are the main focus of the present study. Some or all of the processes in the central portion of the inner plexiform layer may derive from the small, type II TH-immunoreactive neurons (Mariani and Hokoc, 1988).…”
Section: Discussionmentioning
confidence: 99%
“…In addition to the main DA plexus found in the most distal sublamina (sublamina 1) of the inner plexiform layer (IPL), additional TH-immunoreactive processes extend distally toward the layer of photoreceptors (Savy et al, 1995) and also penetrate more deeply into the IPL (Kolb et al, 1990). We examined whether these processes also manifested anti-VMAT2 immunostaining.…”
Section: Distribution Of Vmat2 In Dopaminergic Neuronsmentioning
confidence: 99%
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“…Yet another set of very fine processes advance through the inl toward the outer plexiform layer. The presence of these fine THimmunoreactive (IR) processes permits some of the dopaminergic cells of the rat retina to be characterized as interplexiform neurons (Savy et al, 1995).…”
Section: Voltage-gated Calcium Channels Within Dopaminergic Dendritesmentioning
confidence: 99%
“…Intraocular 6-hydroxydopamine injection into the chicken eye, blocking catecholaminergic neurotransmission, results in degeneration of photoreceptor inner and outer segments [39]. Dopamine is synthesized by some amacrine and interplexiform cells [40,41], has a modulating activity on cone-horizontal cell transmission and may play a role in chromatic processing [42,43]. 6-Hydroxydopamine injection destroys these dopaminergic cells, thus interfering with this feedback circuitry.…”
mentioning
confidence: 99%