FABP4 and Insulin resistance: Moreover, mRNA levels of PPARγ2 and FABP4 were increased in differentiated cells from both VAT- and SAT compared to non-differentiated hVSCs (Fig 1B and 1C), and higher levels of PPARγ2 and FABP4 mRNA were detected in samples from obese patients when compared to lean subjects, independently of the associated insulin resistance condition (MO L-IR or MO H-IR versus Lean L-IR or Lean H-IR).