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学科主题: 基础医学
题名:
Expression of nicotinamide adenine dinucleotide phosphate-diaphorase in the retina of postnatal golden hamsters deprived of light stimulation
作者: Chen, Baiyu; So, Kwok-Fai; Yu, Enhua; Tay, David K. C.
关键词: NADPH-diaphorase ; amacrine cell ; nitric oxide synthase ; visual deprivation ; hamsters
刊名: NEUROSCIENCE LETTERS
发表日期: 2006-09-11
DOI: 10.1016/j.neulet.2006.06.042
卷: 405, 期:1-2, 页:74-78
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Neurosciences
研究领域[WOS]: Neurosciences & Neurology
关键词[WOS]: CIRCADIAN-RHYTHM ; GANGLION-CELLS ; AMACRINE CELLS ; MOUSE RETINA ; NEURONS ; CLOCK ; MELANOPSIN ; LAYER
英文摘要:

Nicotinamide Adenine Dinucleotide Phosphate-Diaphorase (NADPH-d) expressing neurons in the retina of golden hamsters have been identified to be a subset of amacrine cells that provide a major source of Nitric Oxide (NO) in retina. This subset of amacrine cells in mouse retina was recently proved to contain the circadian clock gene Per] (D.Q. Zhang, T. Zhou, G.X. Ruan, D.G. McMahon, Circadian rhythm of Period I clock gene expression in NOS amacrine cells of the mouse retina, Brain Res., 1050 (2005) 101-109). However, it remains unknown whether these clock-related NADPH-d amacrine cells can be regulated by light stimulation and thus synchronized to ambient day/night cycle. A previous study has reported that NADPH-d expressing amacrine cells in postnatal hamsters exhibited a surge after eye-opening (D. Tay, Y.C. Diao, Y.M. Xiao, K.F. So, Postnatal development of nicotinamide adenine dinucleotide phosphate-diaphorase-positive neurons in the retina of the golden hamster, J. Comp. Neurol., 446 (2002) 342-348) suggesting a possible effect of light on the NADPH-d amacrine cells. In order to further reveal the relationship between NADPH-d amacrine cells and light stimulation, the present study focuses on the changes of the expression of NADPH-d in the retina of postnatal hamsters reared in completely deprived light conditions. Prior to eye opening, P12 hamster pups were subjected to either bilateral eyelid suturing or dark rearing. On P28 a subgroup of light deprived hamsters was returned to lighting conditions and the expression of NADPH-d activities in the retina was assessed. In hamsters reared in the 12:12 light-dark cycle, the number of NADPH-d amacrine cells in the ganglion cell layer (GCL) increased right after eye-opening and reached the adult level gradually. However, hamsters subjected to both bilateral eyelid suturing and dark rearing, the number of NADPH-d amacrine cells in GCL was maintained at a low level but increased again upon returning to the 12:12 light-dark condition. In contrast, the number of NADPH-d expressing amacrine cells in the inner nuclear layer (INL) remained low and unaltered regardless of the lighting environment. This study demonstrates that there are two subpopulations of NADPH-d expressing amacrine cells with respect to different locations in the retina of hamsters. Different from those in INL, the NADPH-d amacrine cells in GCL of postnatal hamsters are dependent on the lighting environment implicating that these clock-related amacrine cells and the production of NO might be under a modulation of light stimulation. (c) 2006 Elsevier Ireland Ltd. All rights reserved.

语种: 英语
WOS记录号: WOS:000240169500015
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/53657
Appears in Collections:基础医学院_期刊论文

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作者单位: 1.Univ Hong Kong, Li Ka Shing Fac Med, Dept Anat, Hong Kong, Hong Kong, Peoples R China
2.Univ Hong Kong, State Key Lab Brain & Cognit Sci, Hong Kong, Hong Kong, Peoples R China
3.Peking Univ, Sch Basic Med Sci, Dept Anat & Embryol, Beijing 100871, Peoples R China

Recommended Citation:
Chen, Baiyu,So, Kwok-Fai,Yu, Enhua,et al. Expression of nicotinamide adenine dinucleotide phosphate-diaphorase in the retina of postnatal golden hamsters deprived of light stimulation[J]. NEUROSCIENCE LETTERS,2006,405(1-2):74-78.
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