Journal: Acta neuropathologica
Article Title: The pathogenic relevance of α M -integrin in Guillain-Barré syndrome
doi: 10.1007/s00401-016-1599-0
Figure Lengend Snippet: Bar histograms of mean numbers of CD11b+ leukocytes (a), and total F4/80+ monocytes/macrophages (b), CD3+ T-lymphocytes (c) and CD19+ B-lymphocytes (d) per sciatic nerve section on day 28 post-induction (maximum expected disease severity) are shown. Counts from 4 axial cross-sections per mouse (imaged at 400X magnification) were averaged to obtain a representative count for each mouse studied and mean counts from six mice per experimental group were compared. Statistically significant reductions in CD11b+, F4/80+ and CD3+ leukocytes were observed following CD11b antibody treatment compared to vehicle (PBS)- and isotype antibody-treated controls (a–c), with a significant reduction in CD19+ leukocytes observed with PBS-treated mice only (d). These data imply a robust inhibitory effect on CD11b+ leukocyte infiltration (upregulated in this model based on flow cytometry data), as well as the known effectors of inflammatory demyelination (macrophages and T-lymphocytes) in sm-EAN. Compared to human IVIg-treated mice, CD11b antibody treatment demonstrated statistically significantly reduced total CD11b+ leukocytes and CD3+ T-lymphocytes (a and c) with a 50% reduction in F4/80+ monocytes/macrophages that did not achieve significance (b) probably due to the wide variations in inflammation seen within the same nerve and between nerves of IVIg-treated mice in this model. N=24 axial cross-sections per experimental group. * p <0.05, ** p<0.01 and ns = not significant relative to CD11b antibody treatment.
Article Snippet: Following a wash, leukocytes were suspended in flow cytometry buffer (10% fetal bovine serum + 0.1% sodium azide in 1X PBS) with added F c block reagent (Becton Dickinson) and incubated on ice for 5 minutes.
Techniques: Flow Cytometry