7266 fluorescence microscope

The rats were killed by intraperitoneal injection (10% chloral hydrated, 1 ml/100 g) and 4% paraformaldehyde (PFA) was used to fix via cardiac perfusion. Coronal brain slices (15 μm thick) were prepared and used for staining. Slices were washed in PBS for 5 min, three times, then blotted in 5% goat serum for 1 h at room temperature. Slices were incubated with the primary antibodies overnight at 4°C. Primary antibodies used: mouse anti-Iba1 (1:200 Sigma American), mouse anti-GFAP (1:200 Sigma American), rabbit anti-iNOS, anti-Arg1, anti-IL-1β, anti-TNF-α, anti-IL-4, anti-IL-6, and anti-IL-10 (1:200; Bioss, Beijing, China). After having been washed in PBS three times, these slices were incubated with secondary antibodies at 37°C for 2 h. Secondary antibodies: Alexa Fluor 488-conjugated goat anti-rabbit IgG (1:200; Bioss, Beijing, China), Cy3-conjugated goat ant-mouse IgG (1:200; Bioss, Beijing, China). Then these slices were washed three times again and stained with DAPI (Biyuntian, China) for 5 min. Results were imaged using a 7266-fluorescence microscope (Leica, Japan).

Cells were fixed with 4% paraformaldehyde for 10 min and then washed in phosphate-buffered saline (PBS). After being blocked with 5% bovine serum albumin containing 0.5% Triton X-100 for 1 h at 37°C, the microglia were incubated with the following primary antibodies at 4°C overnight: mouse anti-Iba1 (1:200, Bioss, Beijing, China), rabbit anti-iNOS, anti-Arg1, anti-IL-1β, anti-TNF-α, anti-IL-4, anti-IL-6 and anti-IL-10 (1:200, Bioss). After being washed in PBS three times, the cells were incubated with the following secondary antibodies at 37°C for 1 h: Alexa Fluor 488-conjugated goat anti-rabbit IgG (1:200, Bioss) or Alexa Fluor Cy3-conjugated goat anti-mouse IgG (1:200, Bioss). After being washed in PBS three times, the cells were incubated with 4′,6-diamidino-2-phenylindole (DAPI; Biyuntian, China) for 5 min. The cells were then washed in PBS and observed under a 7266-fluorescence microscope (Leica, Japan).