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Miles R. Stanford, FRCS; Eva Kasp, DPhil; Elizabeth C. Brown, BSc; Elizabeth M. Graham, MRCP; Michael D. Sanders, FRCS; Dudley C. Dumonde, MD

Arch Ophthalmol. 1988;106(1):111-114.

Abstract
• The effect of an additional adjuvant, Bordetella pertussis, on the clinical and histopathologic features of experimental autoimmune uveitis in black-hooded Lister rats was investigated. Disease was induced by a single footpad injection of purified retinal S-antigen in Freund's complete adjuvant. In those animals that did not receive B Pertussis the clinical features were those of a retinal vasculitis with disc edema, periphlebitis, and deep retinal infiltrates. In contrast, animals that received B pertussis developed lesions in the pigment epithelium and choroid. Histopathologic studies disclosed focal photoreceptor necrosis associated with mononuclear cell infiltration in both groups of animals. However, in the group that did not receive B pertussis the disease was predominantly a retinitis associated with perivascular infiltration of retinal vessels, whereas in the group that did receive B pertussis the main feature was a focal choroiditis, with superficial retinal lesions being rarely observed. Retinal photoreceptors were the target tissue in both groups of rats, but the route by which they were damaged was altered from predominantly retinal to choroidal by the addition of Bordetella pertussis as an adjuvant. This change may be ascribed to the ability of B pertussis toxin to sensitize vascular endothelium to local mast cell products, these cells being plentiful around choroidal vessels but absent in the retinal circulation.

Author Affiliations
From the Departments of Immunology (Drs Stanford, Kasp, Brown, and Dumonde) and Ophthalmology (Drs Graham and Sanders), United Medical and Dental Schools, St Thomas' Campus, London.

Footnotes
Accepted for publication Sept 19, 1987.

Read in part before the Association for Research in Vision and Ophthalmology meeting, Sarasota, Fla, April 28, 1986.

Reprint requests to Department of Immunology, The Rayne Institute, St Thomas Hospital, London SE1 7EH, England (Mr Stanford).

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