iNOS‐inhibitor driven neuroprotection in a porcine retina organ culture model
Autor: | Hurst, José, Mueller‐Buehl, Ana Maria, Hofmann, Lisa, Kuehn, Sandra, Herms, Fenja, Schnichels, Sven, Joachim, Stephanie Christine |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Retinal Ganglion Cells
retina Benzylamines hypoxia Swine Amidines Nitric Oxide Synthase Type II Apoptosis Original Articles Cell Hypoxia Neuroprotection organ culture Disease Models Animal Amacrine Cells Neuroprotective Agents Organ Culture Techniques Retinal Diseases iNOS‐inhibitor 1400W Animals Humans Original Article sense organs Microglia |
Zdroj: | Journal of Cellular and Molecular Medicine |
ISSN: | 1582-4934 1582-1838 |
Popis: | Nitrite oxide plays an important role in the pathogenesis of various retinal diseases, especially when hypoxic processes are involved. This degeneration can be simulated by incubating porcine retinal explants with CoCl2. Here, the therapeutic potential of iNOS‐inhibitor 1400W was evaluated. Degeneration through CoCl2 and treatment with the 1400W were applied simultaneously to porcine retinae explants. Three groups were compared: control, CoCl2, and CoCl2 + iNOS‐inhibitor (1400W). At days 4 and 8, retinal ganglion cells (RGCs), bipolar, and amacrine cells were analysed. Furthermore, the influence on the glia cells and different stress markers were evaluated. Treatment with CoCl2 resulted in a significant loss of RGCs already after 4 days, which was counteracted by the iNOS‐inhibitor. Expression of HIF‐1α and its downstream targets confirmed the effective treatment with 1400W. After 8 days, the CoCl2 group displayed a significant loss in amacrine cells and also a drastic reduction in bipolar cells was observed, which was prevented by 1400W. The decrease in microglia could not be prevented by the inhibitor. CoCl2 induces strong degeneration in porcine retinae by mimicking hypoxia, damaging certain retinal cell types. Treatment with the iNOS‐inhibitor counteracted these effects to some extent, by preventing loss of retinal ganglion and bipolar cells. Hence, this inhibitor seems to be a very promising treatment for retinal diseases. |
Databáze: | OpenAIRE |
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