Melanopsin-expressing retinal ganglion cell loss and behavioral analysis in the Thy1-CFP-DBA/2J mouse model of glaucoma.

Melanopsin-expressing retinal ganglion cell loss and behavioral analysis in the Thy1-CFP-DBA/2J mouse model of glaucoma.
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Thy1-CFP-DBA/2J 青光眼小鼠模型中表达黑视蛋白的视网膜神经节细胞丢失和行为分析

DOI:
10.1007/s11427-013-4493-1
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发表时间:
2013-08
期刊:
Science China. Life sciences
影响因子:
--
通讯作者:
Gao J
Gao J
中科院分区:
其他
文献类型:
--
作者:
Zhang Q;Vuong H;Huang X;Wang Y;Brecha NC;Pu M;Gao J

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在这项研究中,黑视素表达的视网膜神经节细胞(mRGCs)的作用,在青光眼诱导的抑郁行为反应模式进行了调查。本研究使用来自五个年龄组的CFP-D2转基因青光眼动物模型。采用免疫组化标记、mRGC形态定量分析、旷场试验(OFT)和统计学分析。与C57 BL/6小鼠相比,年龄匹配的CFP-D2小鼠具有显著升高的眼内压(IOP)。我们观察到视网膜的平行形态学变化,包括青色荧光蛋白(CFP)表达细胞密度的减少(2月龄时细胞mm− 2,1309±26; 14月龄时,878±30,P<0.001),mRGCs(2个月,48±3; 14个月,19±4,P<0.001),Brn 3b表达的RGCs(2个月,1283±80; 14个月,950±31,P<0.001),Brn-3b表达mRGCs(5个月,50.17%±5.5%,14个月,12.61%± 3.8%,P <0.001),mRGCs树突状野缩小(2个月时0.077±0.015; 14个月时0.065± 0.015,P <0.05)。CFP-D2小鼠具有基于行进的总距离、进入中心的次数和在测试装置的中心花费的时间的OFT发现的多动自发活动模式。青光眼诱导的过度活跃反应模式可能与功能障碍的mRGC相关,最可能是CFP-D2小鼠中的Brn-3b阳性mRGC。
In this study, the role of melanopsin-expressing retinal ganglion cells (mRGCs) in the glaucoma-induced depressive behavioral response pattern was investigated. The CFP-D2 transgenic glaucoma animal model from five age groups was used in this study. Immunohistochemical labeling, quantitative analysis of mRGC morphology, open field test (OFT), and statistical analysis were used. In comparison with C57 BL/6 mice, the age-matched CFP-D2 mice had significantly elevated intraocular pressure (IOP). We observed parallel morphological changes in the retina, including a reduction in the density of cyan fluorescent protein-(CFP) expressing cells (cells mm−2at 2 months of age, 1309±26; 14 months, 878±30,P<0.001), mRGCs (2 months, 48±3; 14 months, 19±4,P<0.001), Brn3b-expressing RGCs (2 months, 1283±80; 14 months, 950±31,P<0.001), Brn-3b expressing mRGCs (5 months, 50.17%±5.5%; 14 months, 12.61%±3.8%,P<0.001), and reduction in the dendritic field size of mRGCs (mm2at 2 months, 0.077±0.015; 14 months, 0.065±0.015,P<0.05). CFP-D2 mice had hyperactive locomotor activity patterns based on OFT findings of the total distance traveled, number of entries into the center, and time spent in the center of the testing apparatus. The glaucoma induced hyperactive response pattern could be associated with dysfunctional mRGCs, most likely Brn-3b-positive mRGCs in CFP-D2 mice.
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视网膜神经节细胞变性是拓扑的,但在DBA/2J小鼠中不是特异性细胞类型。
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发表时间: 2005-10-24
影响因子: 7.8
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