Abstract:
:Immunohistochemical techniques were used to survey the distribution of several conventional transmitters, receptors, and neuropeptides in the pigeon nucleus of the basal optic root (nBOR), a component of the accessory optic system. Amongst the conventional neurotransmitters/modulators, the most intense labeling of fibers/terminals within the nBOR was obtained with antisera directed against glutamic acid decarboxylase (GAD) and serotonin (5-HT). Moderately dense fiber plexuses were seen to label with antibodies directed against tyrosine hydroxylase (TH) and choline acetyltransferase (ChAT). GAD-like immunoreactivity (GAD-LI) was found in many small and medium-sized perikarya within the nBOR. Some of the medium-sized cells were occasionally positive for ChAT-LI. Cell body and dendritic staining was also commonly seen with the two tested antisera against receptors-anti-GABA-A receptor and anti-nicotinic acetylcholine receptor. The antisera directed against various neuropeptides produced only fiber labeling within the nBOR. The densest fiber plexus staining was observed with antiserum against neuropeptide Y (NPY-LI), while intermediate fiber densities were seen for substance P (SP-LI) and cholecystokinin (CCK-LI). A few varicose fibers were labeled with antisera against neurotensin (NT), leucine-enkephalin (L-ENK), and the vasoactive intestinal polypeptide (VIP). Unilateral enucleation produced an almost complete elimination of TH-LI in the contralateral nBOR. SP-LI and CCK-LI were also decreased after enucleation. No apparent changes were seen for all other substances. These results indicate that a wide variety of chemically-specific systems arborize within the nBOR. Three of the immunohistochemically defined fiber systems (TH-LI, SP-LI, and CCK-LI fibers) were reduced after removal of the retina, which may indicate the presence of these substances in retinal ganglion cells. In contrast, the fibers exhibiting ChAT-LI, GAD-LI, 5-HT-LI, NPY-LI, NT-LI, L-ENK-LI, and VIP-LI appear to be of nonretinal origin. Two different populations of nBOR neurons exhibited GAD-LI and ChAT-LI. However, these two populations together constituted only about 20% of the nBOR neurons.
journal_name
Vis Neuroscijournal_title
Visual neuroscienceauthors
Britto LR,Hamassaki DE,Keyser KT,Karten HJdoi
10.1017/s0952523800005964subject
Has Abstractpub_date
1989-11-01 00:00:00pages
463-75issue
5eissn
0952-5238issn
1469-8714pii
S0952523800005964journal_volume
3pub_type
杂志文章abstract::Inferior temporal (IT) cortex is a "high-order" region of extrastriate visual cortex important for visual form perception and recognition in adult primates. The pattern of cortical afferents from both ipsilateral and contralateral hemispheres to anterior IT cortex was determined in infant macaque monkeys 7-18 weeks of...
journal_title:Visual neuroscience
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doi:10.1017/s0952523800011160
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journal_title:Visual neuroscience
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更新日期:1990-12-01 00:00:00
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更新日期:1995-03-01 00:00:00
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journal_title:Visual neuroscience
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更新日期:2008-05-01 00:00:00
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doi:10.1017/s0952523803204077
更新日期:2003-07-01 00:00:00
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更新日期:2004-09-01 00:00:00
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更新日期:2005-03-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/S095252380808084X
更新日期:2009-01-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/s0952523801183100
更新日期:2001-05-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/s0952523800006593
更新日期:1991-04-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800006398
更新日期:1992-07-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800012670
更新日期:1997-07-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章,评审
doi:10.1017/S0952523812000028
更新日期:2012-01-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/S0952523819000075
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journal_title:Visual neuroscience
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doi:10.1017/s095252380000403x
更新日期:1991-09-01 00:00:00
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更新日期:2006-03-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523807070666
更新日期:2007-07-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/s0952523800174012
更新日期:2000-07-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/s0952523800006751
更新日期:1995-11-01 00:00:00
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journal_title:Visual neuroscience
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journal_title:Visual neuroscience
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更新日期:1996-09-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523809090105
更新日期:2009-05-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523899164010
更新日期:1999-07-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800008622
更新日期:1996-07-01 00:00:00
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journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800006489
更新日期:1992-01-01 00:00:00
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journal_title:Visual neuroscience
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更新日期:1993-11-01 00:00:00
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更新日期:1998-01-01 00:00:00
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journal_title:Visual neuroscience
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doi:10.1017/S0952523819000129
更新日期:2020-02-12 00:00:00