Journal: Advanced Science
Article Title: Uric Acid Functions as an Endogenous Modulator of Microglial Function and Amyloid Clearance in Alzheimer's Disease
doi: 10.1002/advs.202510270
Figure Lengend Snippet: UA treatment enhances microglial phagocytosis of Aβ. A) Representative Imaris‐based 3D reconstruction of amyloid plaques (MX04, blue; 6E10, red) and microglia (Iba1, green). Scale bar, 10 µm; 5 µm in zoom‐in view. B) Quantification of the number of plaque‐associated microglia (n = 8 mice per group, 43 plaques for 5×FAD+Veh and 44 plaques for 5×FAD+UA). C) Quantification of the MX04 internalization by microglia. n = 53–55 plaques from 10 volumetric images of 8 mice per group. D) Flow cytometric quantification of microglial and macrophage populations in 5×FAD+Veh and 5×FAD+UA mice (n = 8 mice per group). E) Representative flow cytometry plots and F) quantification of MX04 + CD11b + CD45 int hippocampal microglia from WT+Veh, 5×FAD+Veh, and 5×FAD+UA mice (n = 8 mice per group). G) Representative confocal z‐stack images and H) flow cytometry histograms of primary microglia exposed to FAM‐oAβ 1‐42 (1 µ m , 3 h) following treatment with vehicle or UA (100 µ m , 12 h). I) Quantification of mean fluorescence intensity (MFI) from (H) (n = 3 independent experiments). J) Flow cytometry analysis of endocytic capacity using FITC‐conjugated dextran (1 µg mL −1 , 3 h; n = 3 independent experiments). Data are presented as mean ± SEM. P values were determined by two‐tailed unpaired Student's t ‐test in (B, C, D macrophage, F, I, and J), and two‐tailed Mann–Whitney test in (D microglia). ns, not significant; * P < 0.05; ** P < 0.01; **** P < 0.0001.
Article Snippet: 3D reconstruction utilized Imaris software (v.10.0.0; Bitplane) for surface rendering of microglia and MX04‐positive dense‐core plaques, distance measurement between Iba1 surface centroids and the nearest plaque edge (MATLAB), and quantification of plaque‐associated microglia (≤15 μm from plaque edge).
Techniques: Flow Cytometry, Fluorescence, Two Tailed Test, MANN-WHITNEY