Abstract
Background
To illustrate the importance of biomechanical impact on tissue health within the central nervous system (CNS), we herein describe an in vitro model of rhegmatogenous retinal detachment (RRD) in which disruption and restoration of physical tissue support can be studied in isolation.
Methods
Adult retinal porcine explants were kept in culture for 3 or 12 hours without any tissue support, simulating clinical RRD, after which they were either maintained in this state or reattached to the culture membrane for an additional 48 hours.
Results
In vitro detachment resulted in gliosis and severe progressive loss of retinal neurons. In contrast, if the explant was reattached, gliosis and overall cell death was attenuated, ganglion cell death was arrested, and the number of transducin-expressing cone photoreceptors increased.
Conclusions
These results support the hypothesis that removal of the elastic retina from its normal physical environment results in degenerative damage, and, if restored, rescues retinal neurons. Our study reinforces the notion of a strong relationship between the biomechanical environment and homeostasis within the retina, which has significant bearing on pathologic events related to RRD, and may also have impact on other regions within the CNS under biomechanical influence.
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Acknowledgments
The authors would like to thank Elise Markström, Erica Cumléus and Oscar Manouchehrian for excellent technical assistance.
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All authors certify that they have NO affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
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The following funding agencies and trusts provided financial support for the research included in this paper: The Faculty of Medicine, University of Lund, The Swedish Research Council, The Carmen and Bertil Regnér Foundation, The King Gustaf V and Queen Victoria Freemason Foundation, The Foundation of Debilitating Eye Diseases in Malmöhus County. The sponsors had no role in the design or conduct of this research.
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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted and with the ARVO statement on the use of animals in ophthalmic and vision research. This article does not contain any studies with human participants performed by any of the authors.
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Supported by: The Faculty of Medicine, University of Lund, The Swedish Research Council, The Carmen and Bertil Regnér Foundation, The King Gustaf V and Queen Victoria Freemason Foundation, The Foundation of Debilitating Eye Diseases in former Malmöhus County.
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Ghosh, F., Arnér, K. & Taylor, L. In vitro biomechanical modulation—retinal detachment in a box. Graefes Arch Clin Exp Ophthalmol 254, 475–487 (2016). https://doi.org/10.1007/s00417-015-3236-3
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DOI: https://doi.org/10.1007/s00417-015-3236-3