The total expression of proteins from sphingolipid catabolism, e.g., (A) acid ceramidase (ASAH1), (B) acid ceramidase (ASAH2), (C) sphingosine kinase 1 (SPHK1), and (D) sphingosine kinase 2 (SPHK2), in the subcutaneous (SAT) and visceral (VAT) adipose tissues of rats fed a standard diet (control) or high-fat diet (HFD) after chronic CBD treatment. The total expression of the above proteins was standardized to the total protein expression, and the control group was set to 100%. The data are expressed as mean values ± SD, n = 6 in each group. a
p < 0.05: significant difference: control group vs. experimental group; b
p < 0.05: significant difference: HFD vs. HFD+CBD.