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Kainic acid, tetrod...
Kainic acid, tetrodotoxin and light modulate expression of brain-derived neurotrophic factor in developing avian retinal ganglion cells and their tectal target
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- Karlsson, Miriam (author)
- Uppsala universitet,Medicinsk utvecklingsbiologi,FH
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- Hallböök, Finn (author)
- Uppsala universitet,Medicinsk utvecklingsbiologi
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(creator_code:org_t)
- 1998
- 1998
- English.
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In: Neuroscience. - 0306-4522 .- 1873-7544. ; 83:1, s. 137-150
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https://urn.kb.se/re...
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Abstract
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- Increasing evidence underlies the importance of neurotrophins as neuron-derived trophic signals in the developing visual system, although their precise roles are still undefined. Here we show that brain-derived neurotrophic factor messenger RNA is simultaneously expressed in a subpopulation of retinal ganglion cells and in their target during late embryogenesis. Moreover, light as well as the excitotoxin; kainic acid, induced an increase of the brain-derived neurotrophic factor messenger RNA, which could be blocked by the sodium-channel blocker; tetrodotoxin. Messenger RNA for trkB, a receptor for brain-derived neurotrophic factor, was found in the retinal ganglion cells expressing brain-derived neurotrophic factor showing that certain retinal ganglion cells express messenger RNA both for brain-derived neurotrophic factor and trkB. Furthermore, trkB messenger RNA was found in tectum, in the same layers as the brain-derived neurotrophic factor messenger RNA. These findings suggest that brain-derived neurotrophic factor expression is regulated in an activity-dependent manner during the phase of development when neuronal activity plays an important role.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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