Modelling the time evolution of active caspase-3 protein in the rat lens after in vivo exposure to Ultraviolet radiation-B: Model for active caspase-3 expression after in vivo exposure to UVR-300 nm
2014 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 9, no 9, e106926- p.Article in journal (Refereed) Published
Purpose: To introduce a model for the time evolution of active caspase-3 protein expression in albino rat lens up to 24 hours after in vivo exposure to low dose UVR in the 300 nm wavelength region (UVR-300 nm).
Methods: Forty Sprague-Dawley rats were unilaterally exposed in vivo to 1 kJ/m2 UVR-300 nm for 15 minutes. At 0.5, 8, 16, and 24 hours after the UVR exposure, the exposed and contralateral not-exposed lenses were removed and processed for immunohistochemistry. The differences in the probability of active caspase-3 expression at four different time points after exposure were used to determine the time evolution of active caspase-3 expression. A logistic model was introduced for the expression of active caspase-3. The parameters for the exposed and the not exposed lenses were estimated for the observation time points.
Results: The exposure to UVR-300 nm impacted on the parameters of the logistic model. Further, the parameters of the model varied with time after exposure to UVR-300 nm.
Conclusion: The logistic model predicts the impact of exposure to UVR-300 nm on the spatial distribution of probability of active caspase-3 protein expression, depending on time.
Place, publisher, year, edition, pages
2014. Vol. 9, no 9, e106926- p.
ultraviolet radiation, caspase-3, spatial distribution, lens, time evolution, modelling
Research subject Ophtalmology
IdentifiersURN: urn:nbn:se:uu:diva-229465DOI: 10.1371/journal.pone.0106926ISI: 000343679800015PubMedID: 25244366OAI: oai:DiVA.org:uu-229465DiVA: diva2:736582