Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: Experimental coronavirus retinopathy (ECOR) is a virally triggered model of retinal degeneration composed of both genetic and autoimmune components. Since TNF-a plays a role in immune-mediated processes we evaluated the levels of TNF-a/TNF-a receptors and the downstream signaling molecule nitric oxide (NO) during disease in both retinal degeneration susceptible BALB/c and degeneration resistant CD-1 mice. Following coronavirus injection, TNF-a mRNA was detected at higher levels within the retinas, and concentrations of TNF-a ( p < 0.005) and sTNFR1 ( p < 0.0005) proteins were increased within the sera of BALB/c but not CD-1 mice. While concentrations of sTNFR2 proteins were elevated in both BALB/c ( p < 0.00005) and CD-1 ( p < 0.005) mice compared to controls, concentrations were higher in BALB/c mice ( p < 0.0005). Gene expression of iNOS while initially high in BALB/c mice decreased during the acute phase of infection, while it increased in CD-1 mice. These trends are attributable to differences in monocyte TNFR2 release ( p < 0.0005) between the strains since sTNFR2 decreased ( p < 0.01) levels of NO production. These studies demonstrate that retinal degeneration following viral infection is associated with increased release of TNF-a/TNF receptors combined with a down-regulation of NO. Furthermore they suggest that these molecules are involved in alterations in immune response leading to autoimmune reactivity. Published by Elsevier B.V.

Retinal degeneration in experimental coronavirus retinopathy (ECOR) is associated with increased TNF-a, soluble TNFR2 and altered TNF-a signaling