Elena Koudouna

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The chemical composition of tissues can influence their form and function. As a prime example, the lattice-like arrangement of collagen fibrils required for corneal transparency is controlled, in part, by sulfated proteoglycans, which, via core proteins, bind to the collagen at specific locations along the fibril axis. However, to date, no studies have been(More)
Purpose Corneal endothelial cell density undergoes a progressive decrease for many years after transplantation, eventually threatening patients with late endothelial failure. The purpose of this study was to investigate the possibility of an immunologic response in successfully grafted corneal endothelium. Methods The corneal endothelium of patients who(More)
PURPOSE Type VI collagen is a primary component of the extracellular matrix of many connective tissues. It can form distinct aggregates depending on tissue structure, chemical environment, and physiology. In the current study we examine the ultrastructure and mode of aggregation of type VI collagen molecules in the human trabecular meshwork. METHODS(More)
The chemical composition and sulfur (S) speciation of developing chick corneas at embryonic days 12, 14, and 16 were investigated using synchrotron scanning x-ray fluorescence microscopy and x-ray absorption near-edge structure spectroscopy. The aim was to develop techniques for the analysis of bulk tissue and identify critical physicochemical variations(More)
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