Robert A Prendergast

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Duchenne muscular dystrophy (DMD) is characterized by clinical weakness and progressive necrosis of striated muscle as a consequence of dystrophin deficiency. While all skeletal muscle groups are thought to be affected, enigmatically, the extraocular muscles (EOM) appear clinically unaffected. Here we show that dystrophin deficiency does not result in(More)
PURPOSE MRL/MpJ-fas+/fas+ (MRL/+) and MRL/MpJ-fas(lpr)/fas(lpr) (MRL/lpr) mice undergo spontaneous development of inflammation of the lacrimal and salivary glands, similar to that in the human disorder Sjögren's syndrome. Previous work has shown that these lesions appear to be largely T helper (Th)-2-driven, as evidenced by the substantially greater(More)
PURPOSE To quantify S-antigen-specific (S-Ag) T cells in the retina after adoptive transfer, and to evaluate their role in the initiation and progress of destructive ocular inflammation in experimental autoimmune uveoretinitis (EAU). METHODS Lewis rats were administered 10 x 10(6) S-Ag-specific T cells from the SP35 cell line or 10 x 10(6) concanavalin(More)
Lacrimal gland inflammation develops in several strains of autoimmune mice, including MRL/Mp-lpr/lpr (MRL/lpr), MRL/Mp-+/+ (MRL/+), and NZBxNZW F1 hybrids (NZB/W). These mice all develop an autoimmune disease characterized by glomerulonephritis and autoantibody formation, but each strain has unique clinical features and immunologic abnormalities. Previous(More)
Lacrimal gland inflammation develops in a number of autoimmune mice, including the MRL/Mp-lpr/lpr (MRL/lpr), MRL/Mp(-)+/+ (MRL/+), and NZB x NZW F1 hybrid (NZB/W) strains. The authors studied the evolution of this process, MRL/lpr mice had inflammatory lesions at 4 weeks old. The lesions had enlarged by 2 months and were fully developed by 4 to 5 months of(More)
PURPOSE In MRL/Mp-lpr/lpr (MRL/lpr) and MRL/Mp-+/+ (MRL/+) mice, a T-cell-driven lacrimal gland inflammation spontaneously develops that is a model for Sjögren's syndrome. The lacrimal gland lesions in these mice were evaluated by immunohistochemistry for the relative contributions of T-helper (Th)1 versus Th2 immune responses. METHODS Frozen sections of(More)
The lacrimal gland inflammatory lesions and renal vasculitic lesions of autoimmune MRL/lpr mice were analyzed for the lymphocyte subsets present. The majority of cells were Thy-1.2+ T cells (mean, 85%) of the L3T4+ helper T phenotype (mean, 64 and 58%, respectively). Lesser numbers of Lyt-2+ suppressor/cytotoxic T cells, B cells, and macrophages were(More)
An animal model of chronic cicatrizing trachoma has been produced by repeated ocular inoculation with Chlamydia trachomatis serotype E, a genitally transmitted strain. We have now produced a chronic follicular conjunctivitis on cynomolgus monkeys by repeated inoculation with C. trachomatis serotype A, which has been isolated from an area of endemic(More)
PURPOSE MRL/MpJ-fas(+)/fas(+) (MRL/+) and MRL/MpJ-fas(lpr)/fas(lpr) (MRL/lpr) mice are congenic substrains of mice that have spontaneously developing lacrimal and salivary gland inflammation and are models for the human disorder Sjögren's syndrome. Nitric oxide (NO) and tumor necrosis factor (TNF)-alpha are proinflammatory and potential mediators of tissue(More)
PURPOSE A human biovar of Chlamydia trachomatis was used to develop a murine model of ocular chlamydial infection. The inbred mouse model will allow detailed immunologic studies during ocular infection, and use of a human biovar for infection may aid in identification of appropriate vaccine strategies against chlamydial infections. METHODS BALB/c,(More)