To corroborate the histopathological analysis with quantitative data, the protein content of α-SMA and the expression of genes involved in HF, i.e., collagen type I, α 1(ColIa1) and heat shock protein 47 (Hsp47) were evaluated together with genes encoding for enzymes involved in fatty acid metabolism, i.e., fatty acid synthase (FASN) and carnitine palmitoyltransferase 1a (Cpt1a). The gene discussed is ACTA1; the disease is hydrops fetalis.