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retina - Top 30 Publications

Localization of cholecystokinin in the zebrafish retina from larval to adult stage.

The peptide hormone cholecistokinin (CCK) plays a key role in the central and peripheral nervous system. It is known to be involved in the digestive physiology and in the regulation of food intake. Moreover, the CCK expression has also been detected in the retina of different vertebrates, including fish, although its biological activity in this tissue remains to be elucidated. In literature no data are yet available about the CCK-immunoreactivity in the zebrafish retina during development. Therefore, the aim of the study was to investigate the distribution of sulfated cholecystokinin octapeptide (CCK8-S) as a well preserved form during evolution in the zebrafish retina from 3days post hatching (dph) until adult stage, using immunohistochemistry in order to elucidate the potential role of this protein in the development and maintenance of normal retinal homeostasis. The cellular distribution of CCK in the retina was similar from 3 dph to 40days post fertilization (dpf) when immunoreactivity was found in the photoreceptors layer, in the outer plexiform layer, in the inner plexiform layer and, to a lesser extent, in the ganglion cell layer (GCL). Immunohistochemical localization at 50 dpf as well as in the adult stage was observed in a subpopulation of amacrine cells in the proximal inner nuclear layer, in the inner plexiform layer, in displaced amacrine cells and in retinal ganglion cells in the GCL. Our results demonstrate for the first time the occurrence of CCK in the zebrafish retina from larval to adult stage with a different pattern of distribution, suggesting different roles of CCK during retinal cells maturation.

N-acetylcysteine Protects Against Chorioretinal Damage Induced by Photodynamic Therapy for Experimental Choroidal Neovascularization in a Rat Model.

We explored the protective effects of