FADS2 and hydrops fetalis: Nonetheless, expression of PPARα downstream genes, such as Cyp4a10, Cyp4a14, Ehhadh, Aldh3a2, Fabp3, Fads2, Scd1, Cd36, and Lpl, was lower in the db-HF group than in the db-HC group, suggesting that PPARα activity was lower in the db-HF group than in the db-HC group.