The Impact of Vitamin A Deficiency and Supplementation on Behavioral and Oxidative Stress Markers in Male Offspring of a Valproic Acid-Induced Autism Rat Model

Abstract

Autism spectrum disorder (ASD) is a neurodevelopmental condition influenced by genetic and environmental factors, including prenatal nutrition. This study investigates the role of Vitamin A deficiency (VAD) in exacerbating ASD-like behaviors in a valproic acid (VPA)-induced rat model and mitigating effects of Vitamin A supplementation (VAS). Twenty-five pregnant rats were divided into five groups, with treatments including VPA exposure and VAD. Neurodevelopmental and behavioral tests, such as the rollover, negative geotaxis, gait, and open field, assessed motor coordination and social interaction in offspring. VPA and VAD groups showed impaired behaviors, motor deficits, and elevated oxidative stress, marked by reduced superoxide dismutase, catalase, and glutathione levels, alongside increased malondialdehyde, nitrite oxide, and altered acetylcholine activity. VAS partially restored antioxidant defenses and alleviated behavioral symptoms. These findings highlight the exacerbating impact of VAD on ASD-like behaviors and the therapeutic potential of VAS in managing neurodevelopmental and biochemical alterations linked to ASD.