Triamcinolone acetonide decreases outflow facility in C57BL/6 mouse eyes.

Abstract:

PURPOSE:To determine the effect of triamcinolone acetonide (TA) on outflow facility in mice. METHODS:Animals received 20 μL of TA (40 mg/mL) suspension subconjunctivally either bilaterally or unilaterally and were euthanized after either 1 week or 3 weeks. Before mice were killed, IOP was measured with a rebound tonometer. Outflow facility was determined using simultaneous pressure and flow measurements. Another set of animals received bilateral injection of anecortave acetate (AA) with or without bilateral TA injection and their outflow facility was also determined. Myocilin expression was investigated in a subset of eyes using quantitative PCR (qPCR). RESULTS:Outflow facility of eyes in animals receiving bilateral TA injection (TA(BL)) and TA-treated eyes of animals receiving unilateral injection (TA(UL)) was significantly decreased compared to naïve control eyes (C(naive)) after 1 week and 3 weeks of TA treatment (ANOVA P < 0.01, P < 0.001, respectively). Eyes treated with AA (with or without TA) had higher outflow facility than animals treated with TA (P < 0.05). IOP data did not show any significant difference between groups. qPCR analysis revealed significant decrease in myocilin expression in eyes receiving AA compared to naïve control and TA-treated eyes (ANOVA P < 0.001). CONCLUSIONS:Steroid treatment significantly decreases outflow facility in C57BL/6 mice despite having small effect on IOP. This animal model can be useful for studying the pathogenesis of steroid-induced glaucoma.

authors

Kumar S,Shah S,Deutsch ER,Tang HM,Danias J

doi

10.1167/iovs.12-11223

subject

Has Abstract

pub_date

2013-02-01 00:00:00

pages

1280-7

issue

2

eissn

0146-0404

issn

1552-5783

pii

iovs.12-11223

journal_volume

54

pub_type

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