Manitimus is an inhibitor of dehydroorotate dehydrogenase, and a potent immunosuppressive drug.
In the Manitimus-treated rats, there is a dose-related, differential effect: mean survival is 15.7 days in group 4 (Manitimus 5 mg/kg), 19.1 days in group 5 (Manitimus 10 mg/kg) and 25.4 days in group 6 (Manitimus 20 mg/kg)[1]. Manitimus (15 mg/kg, p.o.) results in a significant decrease in neointimal area and percentage of stenosis versus the control rats, and diminishes the effect that CMV infection results in a significant increase in intimal and medial cross-sectional area and medial wall thickness of the vein grafts[2].
[1]. Birnbaum F, et al. The new malononitrilamide immunosuppressant FK778 prolongs corneal allograft survival in the rat keratoplasty model. Eye (Lond). 2007 Dec;21(12):1516-23. Epub 2007 Mar 30. [2]. Kloppenburg G, et al. FK778 attenuates cytomegalovirus-enhanced vein graft intimal hyperplasia in a rat model. Intervirology. 2009;52(4):189-95.