Mitochondrial dysfunction in Parkinson’s disease:Mitochondria are the primary energy generator of the cell and they are important for cell survival and apoptosis.Defective mitochondrial homeostasis is frequently reported in human diseases especially those affecting the brain. Mitochondrial dysfunction in Parkinson’s disease: Mitochondria are the primary energy generator of the cell and they are important for cell survival and apoptosis. Deficit mitochondrial homeostasis is frequently reported in human diseases especially those affecting the brain.