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Invest Ophthalmol Vis Sci. 1991 Jun;32(7):2159-62.

Effect of fibronectin on corneal epithelial wound healing in the vitamin A-deficient rat.

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  • 1Cornea Unit, Eye Research Institute, Boston, MA 02114.


The authors investigated the in vitro and in vivo effects of fibronectin (Fn) on the migration of corneal epithelium of vitamin A-deficient (A-) and pair-fed control (A+) rats. Groups treated with 50 micrograms/ml Fn showed accelerated healing of epithelium in vitro (P less than 0.05) compared with control groups of A- and A+ rats. However, when 100 micrograms/ml Fn eye drops were administered 14 times over 20 hr, they had no significant effect on A+ rats in vivo, but increased the healing in A- rats (P less than 0.05). In this model, Fn promoted the healing of corneal epithelium under A- conditions where decreased endogenous Fn is seen, whereas A+ corneas in vivo, which have sufficient Fn over the wound surface, did not benefit from topical Fn administration.

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