RT Journal Article
T1 Neuroprotective Effects of Low-Dose Statins in the Retinal Ultrastructure of Hypercholesterolemic Rabbits
A1 Fernández Navarro, Judith
A1 Aldea Mansilla, Pilar
A1 Hoz Montañana, María Rosa De
A1 Salazar Corral, Juan José
A1 Ramírez Sebastián, Ana Isabel
A1 Rojas López, María Blanca
A1 Gallego Collado, Beatriz Isabel
A1 Triviño Casado, Alberto
A1 Tejerina Sánchez, María Teresa
A1 Ramírez Sebastián, José Manuel
AB To evaluate the pleiotropic effects to statins, we analyze the qualitative and quantitative retinal changes in hypercholesterolemic rabbits after a low-dosage statin treatment. For this purpose, New Zealand rabbits were split into three groups: control (G0; n = 10), fed a standard diet; hypercholesterolemic (G1; n = 8), fed a 0.5% cholesterol-enriched diet for 8 months; and statins (G2; n = 8), fed a 0.5% cholesterol-enriched diet for 8 months, together with the administration of statin (pravastatin or fluvastatin sodium) at a dose of 2 mg / kg / day each diet. The retinas were analyzed by transmission electron microscopy and immunohistochemistry (glial fibrillary acidic protein). The retinal thickness of nuclear and plexiform layers were quantified in semi-thin sections. The results revealed that the low-statin-treated rabbits in comparison with the hypercholesterolemic group showed: i) a more preserved structure in all retinal layers; ii) a significant reduction in retinal thickness; iii) a decrease in cell death in the nuclear-and ganglion-cell layers; iv) a reduction of hydropic degeneration in the plexiform and nerve-fiber layers; v) a preservation of astrocytes and of the retinal area occupied by them; and vi) a better-preserved retinal vascular structure. Our findings indicate that low doses of statins can prevent retinal degeneration, acting on retinal macroglia, neurons and retinal vessels, despite that hypercholesterolemia remained unchanged. Thus, the pleiotropic effects of the statins may help safeguard the retinal ultrastructure.
PB Public Library Science
SN 1932-6203
YR 2016
FD 2016-05-04
LK https://hdl.handle.net/20.500.14352/23441
UL https://hdl.handle.net/20.500.14352/23441
LA eng
NO Fernández Navarro, J., Aldea Mansilla, P., Hoz Montañana, M. R. et al. «Neuroprotective Effects of Low-Dose Statins in the Retinal Ultrastructure of Hypercholesterolemic Rabbits». PLOS ONE, editado por Jing Chen, vol. 11, n.o 5, mayo de 2016, p. e0154800. DOI.org (Crossref), https://doi.org/10.1371/journal.pone.0154800.
NO © 2016 Fernández-Navarro et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Received: November 16, 2015; Accepted: April 19, 2016; Published: May 4, 2016
NO Redes Temáticas de Investigación Cooperativa: Patología Ocular del Envejecimiento, Calidad Visual y Calidad de Vida
NO Redes Temáticas de Investigación Cooperativa: Red Temática de Investigación Cooperativa en Enfermedades Cardiovasculares
NO Instituto de Salud Carlos III
NO Ministerio de Sanidad (España)
NO Fundación Mutua Madrileña
NO Universidad Complutense de Madrid/Banco de Santander
DS Docta Complutense
RD 29 abr 2025