Journal: Veterinary Research
Article Title: Suppression of ovine lymphocyte activation by Teladorsagia circumcincta larval excretory-secretory products
doi: 10.1186/1297-9716-44-70
Figure Lengend Snippet: The effects of T. circumcincta infection on Tci - L4 - ES mediated lymphocyte suppression. Seven helminth-naïve lambs were trickle infected with 2000 T . circumcincta L3 three times a week for four weeks. PBMC were harvested at 0, 2, 4 and 6 weeks from the start of infection and cultured for 72 h with PBS alone (PBS), 5 μg/mL Con A (Con A + PBS) or 5 μg/mL Con A + 15 μg/mL Tci -L4-ES (Con A + ES). Proliferation was assessed at 72 h by measurement of [ 3 H] thymidine incorporation. Levels of cytokine present in the cell culture supernatants at 54 h were determined by ELISA. (A) Faecal egg count (FEC) data over the course of the experimental infection. (B) Proliferation of PBMC in response to PBS, Con A + PBS and Con A + ES during experimental T . circumcincta infection. (C) Levels of serum Tci -L4-ES-specific IgA and IgG during experimental T . circumcincta infection. (D - F) Concentrations of IL-4, IL-10 and IFN-γ in PBMC cultures supernatants. Data represents mean ± SEM. a significant difference between Con A + PBS vs. PBS-stimulated cultures; b significant difference between ConA + ES vs. PBS-stimulated cultures; c significant difference between Con A + PBS vs. Con A + ES stimulated cultures; * P < 0.05, ** P < 0.01, *** P < 0.001 (repeated-measures two-way ANOVA followed by the Bonferroni post hoc test for comparison of means).
Article Snippet: To determine the role of interleukin-10 (IL-10) PBMC were cultured in the presence of 5 μg/mL anti-ovine IL-10 monoclonal antibody (mAb) CC320 (AbDserotec, Kidlington, UK) or 5 μg/mL mouse IgG1 isotype control (eBioscience).
Techniques: Infection, Cell Culture, Enzyme-linked Immunosorbent Assay