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2017/07/29
New photic stimulating system with white light-emitting diodes to elicit electroretinograms from zebrafish larvae.

2017/03/09
Potential protective function of the sterol regulatory element binding factor 1-fatty acid desaturase 12 axis in early-stage age-related macular degeneration

2016/07/11
Activation of Sterol Regulatory Element Binding Factors by Fenofibrate and Gemfibrozil Stimulates Myelination in Zebrafish

2016/06/14
Downregulation of GSTK1 Is a Common Mechanism Underlying Hypertrophic Cardiomyopathy

2016/06/07
Comparative Transcriptome Analysis Identifies CCDC80 as a Novel Gene Associated with Pulmonary Arterial Hypertension

tIn vivo imaging of zebrafish retinal cells using fluorescent coumarin derivatives

                     
2010/09/15

In vivo imaging of zebrafish retinal cells using fluorescent coumarin derivatives
Kohei Watanabe , Yuhei Nishimura , Takehiko Oka , Tsuyoshi Nomoto , Tetsuo Kon , Taichi Shintou , Minoru Hirano , Yasuhito Shimada , Noriko Umemoto , Junya Kuroyanagi , Zhipeng Wang , Zi Zhang , Norihiro Nishimura , Takeshi Miyazaki , Takeshi Imamura and Toshio Tanaka
BMC Neuroscience 2010, 11:116 doi:10.1186/1471-2202-11-116
Published: 15 September 2010
Abstract (provisional)

Background
The zebrafish visual system is a good research model because the zebrafish retina is very similar to that of humans in terms of the morphologies and functions. Studies of the retina have been facilitated by improvements in imaging techniques. In vitro techniques such as immunohistochemistry and in vivo imaging using transgenic zebrafish have been proven useful for visualizing specific subtypes of retinal cells. In contrast, in vivo imaging using organic fluorescent molecules such as fluorescent sphingolipids allows non-invasive staining and visualization of retinal cells en masse. However, these fluorescent molecules also localize to the interstitial fluid and stain whole larvae.

Results
We screened fluorescent coumarin derivatives that might preferentially stain neuronal cells including retinal cells. We identified four coumarin derivatives that could be used for in vivo imaging of zebrafish retinal cells. The retinas of living zebrafish could be stained by simply immersing larvae in water containing 1 microg/ml of a coumarin derivative for 30 min. By using confocal laser scanning microscopy, the lamination of the zebrafish retina was clearly visualized. Using these coumarin derivatives, we were able to assess the development of the zebrafish retina and the morphological abnormalities induced by genetic or chemical interventions. The coumarin derivatives were also suitable for counter-staining of transgenic zebrafish expressing fluorescent proteins in specific subtypes of retinal cells.

Conclusions
The coumarin derivatives identified in this study can stain zebrafish retinal cells in a relatively short time and at low concentrations, making them suitable for in vivo imaging of the zebrafish retina. Therefore, they will be useful tools in genetic and chemical screenings using zebrafish to identify genes and chemicals that may have crucial functions in the retina.

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In vivo imaging of zebrafish retinal cells using fluorescent coumarin derivatives

BMC Neuroscience 2010, 11:116

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BMC Neuroscience 2010, 11:116