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Role of sulfated proteoglycans in early lens development.

The extracellular matrix has been seen to playa key role in many of the morphogenetic processes which take place during early ocular anlage development. For some time now it has been known that sulfated proteoglycans are present in initial lens development, 85 these molecules have been implied in morphogenetic processes such 8S lens invagination and induction (Webster et al.. 1983, Peterson et aI., 19951. The implication of sulfated proteoglycans in these phenomena is attributed to their distribution pattern and their coinciding with a particular process, or to the changes found in this distribution pattern in certain mutant strains of aphakic mice (Zwaan and Webster, 1984). Nevertheless, there is no direct evidence to support the implication of proteoglycans in the formation processes of the lens vesicle and its subsequent development. In this paper, we offer the preliminary results of an experimental study concerning selective disruption of sulfated proteoglycans synthesis by means of 8 P-D Xyloside, and its effect on lens growth.