FA supplemented to BD rats decreased eNOSt (F(3.20) = 4.2, p < 0.05), mainly by reducing eNOS monomer form (F(3.20) = 9.8, p < 0.001), since it increased DHFR expression (F(3.20) = 5.8, p < 0.01). This evidence concerns the gene DHFR and Behcet disease.