Searching for a UV-filter in the eyes of high-flying birds

Malgorzata Zawadzka, Beatrix Ràcz, Dario Ambrosini, Carl Henrik Görbitz, Jens Preben Morth, Alistair L. Wilkins, Anja Østeby, Katja Benedikte Prestø Elgstøen, Elsa Lundanes, Frode Rise, Amund Ringvold*, Steven Ray Wilson*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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The eye lens is a unique organ as no cells can be replaced throughout life. This makes it decisive that the lens is protected against damaging UV-radiation. An ultraviolet (UV)-absorbing compound of unknown identity is present in the aqueous humor of geese (wild and domestic) and other birds flying at high altitudes. A goose aqueous humor extract, that was believed to contain the UV protective compound which was designated as "compound X", was fractionated and examined using a variety of spectroscopic techniques including LC-MS and high field one- and two dimensional-NMR methods. A series of compounds were identified but none of them appeared to be the UV protective "compound X". It may be that the level of the UV protective compound in goose aqueous humor is much less than the compounds identified in our investigation, or it may have been degraded by the isolation and chromatographic purification protocols used in our investigations.
Original languageEnglish
Article number273
JournalScientific Reports
Issue number1
Number of pages7
Publication statusPublished - 2021


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