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Article
March 1989

Massive Follicular Lymphoid Hyperplasia in Experimental Allergic ConjunctivitisLocal Antibody Production

Author Affiliations

From the Department of Ophthalmology, Scheie Eye Institute, School of Medicine, University of Pennsylvania, Philadelphia.

Arch Ophthalmol. 1989;107(3):433-438. doi:10.1001/archopht.1989.01070010443042
Abstract

• Acute and recurrent allergic conjunctival reactions were induced in guinea pigs by repeated conjunctival applications of fluoresceinyl ovalbumin (FL-OA) for up to 30 months. Early type I conjunctival reactions developed 11 to 25 days after the initial conjunctival exposure to FL-OA. Continuous topical challenges during a six- to 30-month period caused a variety of reactions, including papillary changes and massive hyperplasia of the conjunctival-associated lymphoid tissues. Hyperplasia of lymphoid tissues was induced during a shorter period (two to five months) with a mixture of FL-OA and phorbol ester. Culture fluid from hyperplastic conjunctival lymphoid tissue showed a ratio of IgG1/IgG2 antibody production of up to 15. A low level of recurrence of type I reactivity, after an initial desensitization phenomenon due to a loss of reactive mast cells, correlated with prominent follicular hyperplasia of the conjunctival-associated lymphoid tissue.

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