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Binocular eyelid closure promotes anatomical but not behavioral recovery from monocular deprivation.

作者信息

Duffy Kevin R, Bukhamseen Dalia H, Smithen Matthew J, Mitchell Donald E

机构信息

Department of Psychology and Neuroscience, Dalhousie University, Life Sciences Centre, Halifax, NS B3H 4R2, Canada.

Department of Psychology and Neuroscience, Dalhousie University, Life Sciences Centre, Halifax, NS B3H 4R2, Canada.

出版信息

Vision Res. 2015 Sep;114:151-60. doi: 10.1016/j.visres.2014.12.012. Epub 2014 Dec 20.


DOI:10.1016/j.visres.2014.12.012
PMID:25536470
Abstract

Deprivation of patterned vision of frontal eyed mammals early in postnatal life alters structural and functional attributes of neurones in the central visual pathways, and can produce severe impairments of the vision of the deprived eye that resemble the visual loss observed in human amblyopia. A traditional approach to treatment of amblyopia has been the occlusion of the stronger fellow eye in order to force use of the weaker eye and thereby strengthen its connections in the visual cortex. Although this monocular treatment strategy can be effective at promoting recovery of visual acuity of the amblyopic eye, such binocular visual functions as stereoscopic vision often remain impaired due in part to the lack of concordant vision during the period of unilateral occlusion. The recent development of binocular approaches for treatment of amblyopia that improve the possibility for binocular interaction have achieved success in promoting visual recovery. The full and rapid recovery of visual acuity observed in amblyopic kittens placed in complete darkness is an example of a binocular treatment whose success may in part derive from a restored balance of visually-driven neural activity. In the current study we examined as an alternative to dark rearing the efficacy of binocular lid suture (BLS) to stimulate anatomical and visual recovery from a preceding amblyogenic period of monocular deprivation. In the dorsal lateral geniculate nucleus (dLGN) of monocularly deprived kittens, darkness or BLS for 10days produced a complete recovery of neurone soma size within initially deprived layers. The growth of neurone somata within initially deprived dLGN layers after darkness or BLS was accompanied by an increase in neurotrophin-4/5 labeling within these layers. Although anatomical recovery was observed in both recovery conditions, BLS failed to promote any improvement of the visual acuity of the deprived eye no matter whether it followed immediately or was delayed with respect to the prior period of monocular deprivation. Notwithstanding the lack of visual recovery with BLS, all animals in the BLS condition that were subsequently placed in darkness exhibited a substantial recovery of visual acuity in the amblyopic eye. We conclude that the balanced binocular visual input provided by BLS does not stimulate the collection of neural events necessary to support recovery from amblyopia. The complete absence of visually-driven activity that occurs with dark rearing evidently plays an important role in the recovery process.

摘要

相似文献

[1]
Binocular eyelid closure promotes anatomical but not behavioral recovery from monocular deprivation.

Vision Res. 2015-9

[2]
The long-term effectiveness of different regimens of occlusion on recovery from early monocular deprivation in kittens.

Philos Trans R Soc Lond B Biol Sci. 1991-7-29

[3]
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[4]
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[5]
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J Physiol. 2016-1-1

[6]
Effects of early periods of monocular deprivation and reverse lid suture on the development of Cat-301 immunoreactivity in the dorsal lateral geniculate nucleus (dLGN) of the cat.

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[7]
Pattern adaptation of relay cells in the lateral geniculate nucleus of binocular and monocular vision-deprived cats.

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[8]
A special role for binocular visual input during development and as a component of occlusion therapy for treatment of amblyopia.

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[9]
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[10]
Dark Rearing Promotes the Recovery of Visual Cortical Responses but Not the Morphology of Geniculocortical Axons in Amblyopic Cat.

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引用本文的文献

[1]
Early monocular deprivation reduces the capacity for neural plasticity in the cat visual system.

Cereb Cortex Commun. 2023-8-17

[2]
Dark Rearing Promotes the Recovery of Visual Cortical Responses but Not the Morphology of Geniculocortical Axons in Amblyopic Cat.

Front Neural Circuits. 2021

[3]
A Primer on Constructing Plasticity Phenotypes to Classify Experience-Dependent Development of the Visual Cortex.

Front Cell Neurosci. 2020-8-27

[4]
Modification of Peak Plasticity Induced by Brief Dark Exposure.

Neural Plast. 2019-9-3

[5]
Classification of Visual Cortex Plasticity Phenotypes following Treatment for Amblyopia.

Neural Plast. 2019-9-3

[6]
Amblyopia: New molecular/pharmacological and environmental approaches.

Vis Neurosci. 2018-1

[7]
Rapid recovery from the effects of early monocular deprivation is enabled by temporary inactivation of the retinas.

Proc Natl Acad Sci U S A. 2016-12-6

[8]
Recovery of visual functions in amblyopic animals following brief exposure to total darkness.

J Physiol. 2016-1-1

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