Fig. 4
Effects of PM2.5 exposure on FFA profile and relevant signals in the liver. A, Total FFA content in the hepatic lipid extracts in mice. B and C, Major species of FFA in the hepatic lipid extracts from male (B) and female (C) mice. D and E, mRNA levels of Apob, Apoe, Mttp, enzymes involved in lipolysis and fatty acid uptake in the liver from male (D) and female (E) mice. F-H, Representative bands (F) and analyzed protein levels of ApoB, MTTP, ATGL and HSL in the liver tissue from male (G) and female (H) mice. *P < 0.05, **P < 0.01 for each comparison. n = 5 for lipidomic analysis, n = 7–9 for mRNA examination, and n = 6 for protein examination