Francisco Manuel Nadal-Nicolás

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PURPOSE To characterize Brn3a expression in adult albino rat retinal ganglion cells (RGCs) in naïve animals and in animals subjected to complete intraorbital optic nerve transection (IONT) or crush (IONC). METHODS Rats were divided into three groups, naïve, IONT, and IONC. Two-, 5-, 9-, or 14-day postlesion (dpl) retinas were examined for immunoreactivity(More)
The fate of retinal ganglion cells after optic nerve injury has been thoroughly described in rat, but not in mice, despite the fact that this species is amply used as a model to study different experimental paradigms that affect retinal ganglion cell population. Here we have analyzed, quantitatively and topographically, the course of mice retinal ganglion(More)
The transcription factor Brn3a has been reported to be a good marker for adult rat retinal ganglion cells in control and injured retinas. However, it is still unclear if Brn3a expression declines progressively by the injury itself or otherwise its expression is maintained in retinal ganglion cells that, though being injured, are still alive, as might occur(More)
Glaucoma, the second most common cause of blindness, is characterized by a progressive loss of retinal ganglion cells and their axons, with a concomitant loss of the visual field. Although the exact pathogenesis of glaucoma is not completely understood, a critical risk factor is the elevation, above normal values, of the intraocular pressure. Consequently,(More)
Intrinsically photosensitive retinal ganglion cells (ipRGCs) respond directly to light and are responsible of the synchronization of the circadian rhythm with the photic stimulus and for the pupillary light reflex. To quantify the total population of rat-ipRGCs and to assess their spatial distribution we have developed an automated routine and used(More)
We have studied in parallel the population of displaced retinal ganglion cells (dRGCs) and normally placed (orthotopic RGCs, oRGCs) in albino and pigmented rats. Using retrograde tracing from the optic nerve, from both superior colliculi (SC) or from the ipsilateral SC in conjunction with Brn3 and melanopsin immunodetection, we report for the first time(More)
The three members of the Pou4f family of transcription factors: Pou4f1, Pou4f2, Pou4f3 (Brn3a, Brn3b and Brn3c, respectively) play, during development, essential roles in the differentiation and survival of sensory neurons. The purpose of this work is to study the expression of the three Brn3 factors in the albino and pigmented adult rat. Animals were(More)
We examined qualitatively and quantitatively in adult rat retinas the temporal degeneration of the nerve fibre layer after intra-orbital optic nerve transection (IONT) or crush (IONC). Retinal ganglion cell (RGC) axons were identified by their heavy neurofilament subunit phosphorylated isoform (pNFH) expression. Optic nerve injury induces a progressive(More)
PURPOSE To quantify the whole population of S- and L-cones in the albino (Sprague-Dawley, SD) and pigmented (Piebald Virol Glaxo, PVG) rats and to study their topographical distribution within the retina. METHODS Retinal radial sections and whole-mounted retinas were double immunodetected with antibodies against UV-sensitive and L-opsins to detect the S-(More)
PURPOSE To further investigate the molecular signals underlying optic nerve (ON) injury, the authors analyzed in adult control, ON-transected, and ON-crushed retinas the expression pattern and time-course regulation of the following proteins, all of which are linked to apoptosis through different pathways: Stat 1, caspase 11 (inflammation and death),(More)