PMID- 26747775 OWN - NLM STAT- MEDLINE DCOM- 20160331 LR - 20230717 IS - 1552-5783 (Electronic) IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 56 IP - 13 DP - 2015 Dec TI - Primed Mycobacterial Uveitis (PMU): Histologic and Cytokine Characterization of a Model of Uveitis in Rats. PG - 8438-48 LID - 10.1167/iovs.15-17523 [doi] AB - PURPOSE: The purpose of this study was to compare the histologic features and cytokine profiles of experimental autoimmune uveitis (EAU) and a primed mycobacterial uveitis (PMU) model in rats. METHODS: In Lewis rats, EAU was induced by immunization with interphotoreceptor binding protein peptide, and PMU was induced by immunization with a killed mycobacterial extract followed by intravitreal injection of the same extract. Clinical course, histology, and the cytokine profiles of the aqueous and vitreous were compared using multiplex bead fluorescence immunoassays. RESULTS: Primed mycobacterial uveitis generates inflammation 2 days after intravitreal injection and resolves spontaneously 14 days later. CD68+ lymphocytes are the predominant infiltrating cells and are found in the anterior chamber, surrounding the ciliary body and in the vitreous. In contrast to EAU, no choroidal infiltration or retinal destruction is noted. At the day of peak inflammation, C-X-C motif ligand 10 (CXCL10), IL-1beta, IL-18, and leptin were induced in the aqueous of both models. Interleukin-6 was induced 2-fold in the aqueous of PMU but not EAU. Cytokines elevated in the aqueous of EAU exclusively include regulated on activation, normal T cell expressed and secreted (RANTES), lipopolysaccharide-induced CXC chemokine (LIX), growth-related oncogene/keratinocyte chemokine (GRO/KC), VEGF, monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1alpha (MIP-1alpha), and IL-17A. In the vitreous, CXCL10, GRO/KC, RANTES, and MIP-1alpha were elevated in both models. Interleukin-17A and IL-18 were elevated exclusively in EAU. CONCLUSIONS: Primed mycobacterial uveitis generates an acute anterior and intermediate uveitis without retinal involvement. Primed mycobacterial uveitis has a distinct proinflammatory cytokine profile compared with EAU, suggesting PMU is a good complementary model for study of immune-mediated uveitis. CXCL10, a proinflammatory cytokine, was increased in the aqueous and vitreous of both models and may be a viable therapeutic target. FAU - Pepple, Kathryn L AU - Pepple KL AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States. FAU - Rotkis, Lauren AU - Rotkis L AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States. FAU - Van Grol, Jennifer AU - Van Grol J AD - Alcon Research Laboratories, Fort Worth, Texas, United States. FAU - Wilson, Leslie AU - Wilson L AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States. FAU - Sandt, Angela AU - Sandt A AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States. FAU - Lam, Deborah L AU - Lam DL AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States. FAU - Carlson, Eric AU - Carlson E AD - Alcon Research Laboratories, Fort Worth, Texas, United States. FAU - Van Gelder, Russell N AU - Van Gelder RN AD - Department of Ophthalmology, University of Washington, Seattle, Washington, United States 3Department of Biological Structure, University of Washington, Seattle, Washington, United States 4Department of Pathology, University of Washington, Seattle, Washin. LA - eng GR - WT_/Wellcome Trust/United Kingdom GR - K08 EY023998/EY/NEI NIH HHS/United States GR - P30 EY001730/EY/NEI NIH HHS/United States GR - K08EY023998/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 RN - 0 (Cytokines) SB - IM MH - Animals MH - Cytokines/*metabolism MH - Disease Models, Animal MH - Eye Infections, Bacterial/metabolism/microbiology/*pathology MH - Female MH - Mycobacterium tuberculosis/*isolation & purification MH - Rats MH - Rats, Inbred Lew MH - Uveitis/metabolism/microbiology/*pathology PMC - PMC4699411 EDAT- 2016/01/10 06:00 MHDA- 2016/04/01 06:00 PMCR- 2016/06/01 CRDT- 2016/01/10 06:00 PHST- 2016/01/10 06:00 [entrez] PHST- 2016/01/10 06:00 [pubmed] PHST- 2016/04/01 06:00 [medline] PHST- 2016/06/01 00:00 [pmc-release] AID - 2480575 [pii] AID - Customer No. IOVS-15-17523 [pii] AID - 10.1167/iovs.15-17523 [doi] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2015 Dec;56(13):8438-48. doi: 10.1167/iovs.15-17523.