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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Retinoic acid increases in the retina of the chick with form deprivation myopia.

We previously reported that expression of retinoic acid receptor beta increases in the sclera of the 2-week-old chick with form deprivation myopia (FDM) and that all-trans-retinoic acid (t-RA) influences proliferation and differentiation of scleral cells. The purpose of this study was to quantify t-RA in the retina of the chick with FDM and to investigate the role of t-RA in FDM in the chick. FDM was induced in 2-day-old chicks by placement of a translucent plastic goggle over one eye, with the contralateral eye used as a control. After 5 days, the chicks were sacrificed. t-RA was extracted from neural retina and served for high-performance liquid chromatography analysis. 3H-t-RA was used for normalization. Pieces of the retinae from 5 eyes served as one sample. As a result, t-RA was 09.60 +/- 0.86 ng/eye (0.387 +/- 0.056 ng/mg protein) in the myopic retina was significantly higher than that in the control (p < 0.05, n = 7). These results demonstrate that t-RA increases in the retina within 5 days after visual deprivation. This finding suggests that t-RA may play a role in the metabolic changes in FDM.[1]


  1. Retinoic acid increases in the retina of the chick with form deprivation myopia. Seko, Y., Shimizu, M., Tokoro, T. Ophthalmic Res. (1998) [Pubmed]
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