The effects of pesticides on monoaminergic system related to periodic activity of mussels (Anodonta cygnea L.).

1. The effect of a herbicide (paraquat) and an insecticide (methidation) on the periodic activity of mussel in relation to serotonin and dopamine levels and their release and uptake in nervous system was investigated. 2.

[Effect of antioxidants on the oxidative stress of red blood cells].

Antioxidant nomination covers a substance group of great variety, therefore, the determination of action mechanism of new antioxidants requires a complicated test system. The present work demonstrates this labour and time consuming procedure conducted on human red blood cells (RBCs) exposing them to "stress effect" with diluted hydrogen peroxide. It was studied how did these oxidative stress conditions affect the filtration parameters, lipid peroxidation, reduced glutathione content and superoxide dismutase activity of RBCs.