UVA light-excited kynurenines oxidize ascorbate and modify lens proteins through the formation of advanced glycation end products: implications for human lens …

M Linetsky, CT Raghavan, K Johar, X Fan… - Journal of Biological …, 2014 - ASBMB
Advanced glycation end products (AGEs) contribute to lens protein pigmentation and cross-
linking during aging and cataract formation. In vitro experiments have shown that ascorbate …

Metabolomic composition of normal aged and cataractous human lenses

YP Tsentalovich, TD Verkhovod, VV Yanshole… - Experimental eye …, 2015 - Elsevier
Quantitative metabolomic profiles of normal and cataractous human lenses were obtained
with the combined use of high-frequency nuclear magnetic resonance (NMR) and high …

Metabolomics of the rat lens: A combined LC-MS and NMR study

VV Yanshole, OA Snytnikova, AS Kiryutin… - Experimental eye …, 2014 - Elsevier
This work is the first comprehensive report on the quantitative metabolomic composition of
the rat lens. Quantitative metabolomic profiles of lenses were acquired with the combined …

Metabolomics of the human aqueous humor

OA Snytnikova, AA Khlichkina, LV Yanshole… - Metabolomics, 2017 - Springer
Introduction The optical elements of the eye—cornea, lens, and vitreous humor—are
avascular tissues, and their nutrition and waste removal are provided by aqueous humor …

Ultrafast excited-state dynamics of kynurenine, a UV filter of the human eye

PS Sherin, J Grilj, YP Tsentalovich… - The Journal of Physical …, 2009 - ACS Publications
The excited-state dynamics of kynurenine (KN) has been examined in various solvents by
femtosecond-resolved optical spectroscopy. The lifetime of the S1 state of KN amounts to 30 …

Dimerization and oxidation of tryptophan in UV-A photolysis sensitized by kynurenic acid

ED Sormacheva, PS Sherin, YP Tsentalovich - Free Radical Biology and …, 2017 - Elsevier
Photoinduced generation of radicals in the eye lens may play an important role in the
modification of proteins leading to their coloration, aggregation, and insolubilization. The …

[HTML][HTML] Visualising UV-A light-induced damage to plasma membranes of eye lens

PS Sherin, A Vyšniauskas, I Lopez-Duarte… - … of Photochemistry and …, 2021 - Elsevier
An eye lens is constantly exposed to the solar UV radiation, which is considered the most
important external source of age-related changes to eye lens constituents. The accumulation …

[HTML][HTML] Photochemical properties of UV filter molecules of the human eye

YP Tsentalovich, PS Sherin… - … & visual science, 2011 - jov.arvojournals.org
Purpose.: To compare the photochemical properties of UV filter molecules present in the
human lens (kynurenine, KN; 3-hydroxykynurenine, 3OHKN; 3-hydroxykynurenine O-β-d …

Post-mortem changes in the metabolomic compositions of rabbit blood, aqueous and vitreous humors

EA Zelentsova, LV Yanshole, OA Snytnikova… - Metabolomics, 2016 - Springer
Introduction The analysis of post-mortem metabolomic changes in biological fluids opens
the way to develop new methods for the estimation of post-mortem interval (PMI). It may also …

Aggregation of α-crystallins in kynurenic acid-sensitized UVA photolysis under anaerobic conditions

PS Sherin, EA Zelentsova, ED Sormacheva… - Physical Chemistry …, 2016 - pubs.rsc.org
The reactions of photoexcited kynurenic acid (KNA) with bovine α-crystallins under
anaerobic conditions proceed via the electron transfer from tryptophan (Trp) and tyrosine …