Erschienen in:
31.05.2019 | Basic Science
Systemic Rho-kinase inhibition using fasudil in mice with oxygen-induced retinopathy
verfasst von:
Claudia Brockmann, Caitlin Corkhill, Elzbieta Jaroslawska, Sabrina Dege, Tobias Brockmann, Norbert Kociok, Antonia M. Joussen
Erschienen in:
Graefe's Archive for Clinical and Experimental Ophthalmology
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Ausgabe 8/2019
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Abstract
Purpose
To investigate the influence of the selective Rho-kinase (ROCK) inhibitor, fasudil, on the mRNA level of proinflammatory factors and the retinal vascular development in mice with oxygen-induced retinopathy (OIR).
Methods
C57BL/6J mice underwent standard protocol for OIR induction from postnatal days 7 to 12. Subsequently, they received a daily intraperitoneal injection of fasudil or sodium chloride from P12 to P16. Analyses were performed using vascular staining on retinal flat mounts, RNA expression by qPCR, and immunohistochemistry on paraffin sections.
Results
On retinal flat mounts, the proportion of avascular area and tuft formation did not differ between the fasudil and NaCl group. Immunohistochemical staining revealed a less intense staining with inflammatory markers after fasudil. Nevertheless, there were no differences on RNA level between the two groups.
Conclusions
In conclusion, our findings support that daily systemic application of fasudil does not decrease retinal neovascularization in rodents with oxygen-induced retinopathy. The results of our study together with the controversial results on the effects of different ROCK inhibitors from the literature makes it apparent that effects of ROCK inhibition are more complex, and further studies are necessary to analyze its potential therapeutic effects.