TLR4 and TLR2 gene expression and protein content. TLR4 mRNA expression (A) and protein content (B) were measured in lean, obese, and type 2 diabetic (T2DM) subjects. Data are means ± SE in 7 lean, 8 obese, and 14 type 2 diabetic subjects in A and 6 lean, 8 obese, and 10 type 2 diabetic subjects in B (protein extracts were not available for all subjects). C: Correlation between TLR4 content and HOMA-IR. D: TLR2 mRNA expression in 7 lean, 8 obese, and 14 type 2 diabetic subjects. *P < 0.05 vs. lean. E: Direct Western blotting in muscle from three lean and three type 2 diabetic subjects using an antibody against human TLR2 (eBiosciences). A band corresponding to TLR2 was detected in mononuclear cells (MNCs) isolated from two subjects.