Research Article
Oxidized Oils and Oxidized Proteins Induce Apoptosis in Granulosa Cells by Increasing Oxidative Stress in Ovaries of Laying Hens
Figure 2
Effect of dietary-oxidized oil and dietary-oxidized protein on prehierarchical follicle (a–c) and hierarchical follicle (d–f) granulosa cell apoptosis rate of laying hens. Granulosa cells stained with fluorescein isothiocyanate- (APC-) Annexin V/propidium iodide (PI). Flow cytometric analysis defined early stage apoptosis as APC-Annexin V+ and PI-. Late stage apoptosis was defined as APC-Annexin V+ and PI+ in cells. Flow cytometry profiles with APC-Annexin V (-axis) and PI (-axis) staining (a, d). Calculated proportion of cells undergoing apoptosis (b, c, e, f). Values are the (). Means without a common letter are different; . CON: control; FP: fresh protein; OP: oxidized protein; FO: fresh oil; OO: oxidized oil; Combination: oxidized oil+oxidized protein.