Figure 5.

Hepatic levels of long-chain (14–20 carbon atoms) acylcarnitines (AcCa) are increased in response to formoterol (Form) treatment of mice. AcCa levels in lipid extracts of livers from Form- and saline (Control, Ctr)-treated animals were measured by HPLC-electrospray ionization-mass spectrometry as described in materials and methods. Numbers in parentheses designate the number of carbon atoms:number of double bonds. Data are expressed as means ± SE; n = 5 mice/group; *P < 0.05 vs. Ctr; **P < 0.01; ***P < 0.001.