Journal: Frontiers in Immunology
Article Title: Circulatory HMGB1 is an early predictive and prognostic biomarker of ARDS and mortality in a swine model of polytrauma
doi: 10.3389/fimmu.2023.1227751
Figure Lengend Snippet: HMGB1 and TLR-4 expressions in the lung tissue of injured control and MSC-treated swine. The swine were exposed to smoke inhalation and burn injury, then treated with saline (injury control), or autologous MSC treatment (MSC), and observation for up to 72 h PI. (A) Lung tissue samples were obtained during necropsy and proceeded for immunohistochemistry (IHC) staining, the primary antibodies of anti-HMGB1 (rabbit anti-HMGB1), and anti-TLR4 (mouse anti-TLR4), followed by visualization with a goat anti-rabbit IgG conjugated with Cy3 (red) and goat anti-mouse IgG conjugated with cy2 (green), respectively. DNA was stained with 4′,6-diamidino-2-phenylindole (DAPI) (blue). Scale bar = 50 μm. Note that the co-localized staining (yellow arrows) of HMGB1 and TLR4 was observed in the injury control but not in the MSC treatment group. (B) The mean immunofluorescence signal intensity in the IHC images was measured by ImageJ software and presented as mean± SEM. n=5 swine per experimental group was analyzed. Statistical analysis was performed using the Mann–Whitney U test, *p<0.05.
Article Snippet: After washing, sections were mounted with ProLong Gold Antifade solution containing 4′,6-diamidino-2-phenylindole (DAPI) (Invitrogen, Carlsbad, CA) for staining the nuclear DNA.
Techniques: Immunohistochemistry, Staining, Immunofluorescence, Software, MANN-WHITNEY