MAOB and Parkinson disease: The preliminary anti-PD ability of the total 80% ethanol extract and its three fractions (100% water fraction, 50% methanol fraction, and 100% methanol fraction) was evaluated by estimating their inhibitory activity against MAO-B enzyme, an enzyme responsible for the breaking down of different neurotransmitters mainly DA that is important for the coordination of many nerve and muscle cells in the brain.