Biochemical, structural and biomechanical features of human scleral matrix in primary open-angle glaucoma
Iomdina, E.N.; Ignat'eva, N.I.; Danilov, N.A.; Arutiunian, L.L.; Kiseleva, O.A.; Nazarenko, L.A.
Vestnik Oftalmologii 127(6): 10-14
2011
ISSN/ISBN: 0042-465X PMID: 22442986 Document Number: 648117
The goal of the investigation was to study the changes of scleral matrix collagen in progressing primary open-angle glaucoma (POAG). In scleral samples of 16 patients aged 52-81 years with different stages of POAG amino acid composition, collagen content and cross-linking ratio characterizing tissue rigidity were estimated. Collagen I was found to be the dominant type in sclera of glaucomatous and normal eyes, though as POAG progressing the content and cross-linking increase, that underlies the scleral rigidity increase and permeability decrease. Similar ratio of collagen cross-linking with age and glaucoma progression give evidence of specific pathologic changes of the dominant matrix component, that may be one of significant pathogenic factor of POAG.