000048451 001__ 48451
000048451 005__ 20210121114518.0
000048451 0247_ $$2doi$$a10.3389/fncel.2015.00484
000048451 0248_ $$2sideral$$a94401
000048451 037__ $$aART-2015-94401
000048451 041__ $$aeng
000048451 100__ $$aFernández-Sánchez L
000048451 245__ $$aAstrocytes and Müller Cell Alterations During Retinal Degeneration in a Transgenic Rat Model of Retinitis Pigmentosa
000048451 260__ $$c2015
000048451 5060_ $$aAccess copy available to the general public$$fUnrestricted
000048451 5203_ $$aPurpose: Retinitis pigmentosa includes a group of progressive retinal degenerative diseases that affect the structure and function of photoreceptors. Secondarily to the loss of photoreceptors, there is a reduction in retinal vascularization, which seems to influence the cellular degenerative process. Retinal macroglial cells, astrocytes, and Müller cells provide support for retinal neurons and are fundamental for maintaining normal retinal function. The aim of this study was to investigate the evolution of macroglial changes during retinal degeneration in P23H rats.
Methods: Homozygous P23H line-3 rats aged from P18 to 18 months were used to study the evolution of the disease, and SD rats were used as controls. Immunolabeling with antibodies against GFAP, vimentin, and transducin were used to visualize macroglial cells and cone photoreceptors.
Results: In P23H rats, increased GFAP labeling in Müller cells was observed as an early indicator of retinal gliosis. At 4 and 12 months of age, the apical processes of Müller cells in P23H rats clustered in firework-like structures, which were associated with ring-like shaped areas of cone degeneration in the outer nuclear layer. These structures were not observed at 16 months of age. The number of astrocytes was higher in P23H rats than in the SD matched controls at 4 and 12 months of age, supporting the idea of astrocyte proliferation. As the disease progressed, astrocytes exhibited a deteriorated morphology and marked hypertrophy. The increase in the complexity of the astrocytic processes correlated with greater connexin 43 expression and higher density of connexin 43 immunoreactive puncta within the ganglion cell layer (GCL) of P23H vs. SD rat retinas.
Conclusions: In the P23H rat model of retinitis pigmentosa, the loss of photoreceptors triggers major changes in the number and morphology of glial cells affecting the inner retina.
000048451 536__ $$9info:eu-repo/grantAgreement/ES/ISCIII/RETICS-RD12-0034-0010$$9info:eu-repo/grantAgreement/ES/MINECO/BFU2012-36845
000048451 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000048451 590__ $$a4.609$$b2015
000048451 591__ $$aNEUROSCIENCES$$b52 / 256 = 0.203$$c2015$$dQ1$$eT1
000048451 592__ $$a2.26$$b2015
000048451 593__ $$aCellular and Molecular Neuroscience$$c2015$$dQ1
000048451 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000048451 700__ $$aLax P
000048451 700__ $$aCampello L
000048451 700__ $$0(orcid)0000-0003-0349-9997$$aPinilla I$$uUniversidad de Zaragoza
000048451 700__ $$aCuenca N.
000048451 7102_ $$11004$$2646$$aUniversidad de Zaragoza$$bDpto. Cirugía,Ginecol.Obstetr.$$cÁrea Oftalmología
000048451 773__ $$g9 (2015), 484$$pFRONTIERS IN CELLULAR NEUROSCIENCE$$tFRONTIERS IN CELLULAR NEUROSCIENCE$$x1662-5102
000048451 8564_ $$s1330299$$uhttps://zaguan.unizar.es/record/48451/files/texto_completo.pdf$$yVersión publicada
000048451 8564_ $$s89286$$uhttps://zaguan.unizar.es/record/48451/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000048451 909CO $$ooai:zaguan.unizar.es:48451$$particulos$$pdriver
000048451 951__ $$a2021-01-21-11:01:05
000048451 980__ $$aARTICLE