Time course of bilateral microglial activation in a mouse model of laser-induced glaucoma.

Abstract:

:Microglial activation is associated with glaucoma. In the model of unilateral laser-induced ocular hypertension (OHT), the time point at which the inflammatory process peaks remains unknown. Different time points (1, 3, 5, 8, and 15 d) were compared to analyze signs of microglial activation both in OHT and contralateral eyes. In both eyes, microglial activation was detected in all retinal layers at all time points analyzed, including: i) increase in the cell number in the outer segment photoreceptor layer and plexiform layers (only in OHT eyes) from 3 d onward; ii) increase in soma size from 1 d onward; iii) retraction of the processes from 1 d in OHT eyes and 3 d in contralateral eyes; iv) increase in the area of the retina occupied by Iba-1+ cells in the nerve fiber layer/ganglion cell layer from 1 d onward; v) increase in the number of vertical processes from 1 d in contralateral eyes and 3 d in OHT eyes. In OHT eyes at 24 h and 15 d, most Iba-1+ cells were P2RY12+ and were down-regulated at 3 and 5 d. In both eyes, microglial activation was stronger at 3 and 5 d (inflammation peaked in this model). These time points could be useful to identify factors implicated in the inflammatory process.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Ramírez AI,de Hoz R,Fernández-Albarral JA,Salobrar-Garcia E,Rojas B,Valiente-Soriano FJ,Avilés-Trigueros M,Villegas-Pérez MP,Vidal-Sanz M,Triviño A,Ramírez JM,Salazar JJ

doi

10.1038/s41598-020-61848-9

subject

Has Abstract

pub_date

2020-03-17 00:00:00

pages

4890

issue

1

issn

2045-2322

pii

10.1038/s41598-020-61848-9

journal_volume

10

pub_type

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