the aim of this study was to investigate the effective concentration of ethanolic extract  of bee pollen on liver, spleen and heart tissues of fish. bee pollen extract in various concentrations (0.5, 2.5, 5, 10, 20 and 30 ppm) was administered to fish for 96 h under aquarium conditions. the malondialdehyde (mda) levels, total antioxidant status (tas), total oxidant status (tos), oxidative stres...

Background: Aging is associated with oxidative stress but its underlying mechanisms remain poorly understood. The aim of this study was to investigate alterations in human erythrocyte membrane sulfhydryl groups and levels of β-D-glucuronidase during aging. Methods: The study was carried with a cohort of 52 normal, healthy subjects of both sexes. They were divided into three groups: young, middl...