Abstract
Background
Iodide has been used empirically against different age-related eye diseases, including cataract. The purpose of the present study was to investigate the effect of iodide on selenite-induced cataract in rat lens.
Methods
Young white rats received subcutaneously sodium selenite (20 and 30 nmol/g b.w.) on day 13 post partum (p.p.). Cataract development was measured by expert estimation and image data analysis. Potassium iodide (1.5 nmol/g b.w.) was given (1–5 times) i.p. at different times with respect to the selenite administration. Lens opacification was analyzed in selenite, selenite–iodide, iodide and control groups on day 7 after selenite administration.
Results
Iodide showed a significant protective effect against selenite cataract when injected 2 days (2 times) before selenite injection, i.e., on days 11 and 12 p.p. No significant effects on lens opacity were found: (1) after only one iodide injection (on day 12 p.p.), (2) after an initial iodide administration 1 h before selenite and (3) after injections of iodide once a day for 5 consecutive days. The protective effect of iodide was the same (about 50%) for both selenite doses used.
Conclusions
There is a time-dependent protective influence of iodide against selenite cataract development. It is supposed that the anticataract effect of iodide could be based on direct or indirect antioxidant mechanisms.
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Acknowledgement
The study was supported by the Paracelsus Society for Balneology and Iodine Research in Bad Hall, Austria.
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In memory of Prof. Otto Hockwin (1925–2002), honorary doctor of the Medical Faculty of the University of Halle, Germany
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Muranov, K., Poliansky, N., Winkler, R. et al. Protection by iodide of lens from selenite-induced cataract. Graefe's Arch Clin Exp Ophthalmol 242, 146–151 (2004). https://doi.org/10.1007/s00417-003-0790-x
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DOI: https://doi.org/10.1007/s00417-003-0790-x