Zusammenfassung
Epidemiologische Veränderungen führen in den nächsten Jahrzehnten neben einem bedeutenden Anstieg der Weltbevölkerungszahl auch zu einem nicht unerheblichen Anstieg der Lebenserwartung. Als Ergebnis beider Faktoren ist mit einer starken Zunahme an altersabhängigen Linsentrübungen und Katarakt zu rechnen. Unter Einbeziehung der prognostizierten sozioökonomischen Bedeutung dieser Entwicklung kommt der intensiven Grundlagenforschung zur Klärung der Entstehungsmechanismen der Katarakt eine steigende Bedeutung zu. Neben der Vielzahl bekannter Risikofaktoren rücken insbesondere oxidative Schädigungsprozesse zunehmend in das Zentrum der Betrachtungen. Durch das komplexe Zusammenspiel aus dem Versagen der leistungsfähigen antioxidativen Schutzsysteme der Linse mit einem gleichzeitigen Anstieg metabolischer Endprodukte und deren Einfluss auf die physikochemischen Eigenschaften kommt es zu den typischen Alterungsveränderungen der Linse. „Advanced glycation end-products“ und deren mögliche Inhibition scheinen dabei eine wesentliche Rolle zu spielen.
Abstract
Epidemiological changes within the next decades will lead to an increase in the world population and to life expectancy. These changes will in turn lead to an increase in age correlated lens opacities and cataracts. Intensive research on cataract formation therefore becomes more and more important for socioeconomic reasons. In addition to the known risk factors, increased attention is currently being paid to oxidative processes. Typically, changes in the old lens are caused by the failure of protective systems and an accumulation of metabolic end-products and their influence on light transmission. Advanced glycation end-products and their potential inhibition seem to play a key role.
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Dawczynski, J., Strobel, J. „The aging lens“ – neue Konzepte zum Alterungsprozess der Linse. Ophthalmologe 103, 759–764 (2006). https://doi.org/10.1007/s00347-006-1410-z
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DOI: https://doi.org/10.1007/s00347-006-1410-z