Publications by authors named "Lora A Becker"

Background: Environmental uncertainty, such as food deprivation, may alter internal milieu of nervous system through various mechanisms. In combination with circumstances of stress or aging, high consumption of unsaturated fatty acids and oxygen can make neural tissues sensitive to oxidative stress (OS). For adult rats, diminished level of gonadal steroid hormones accelerates OS and may result in special behavioral manifestations.

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The crucial role of xanthine oxidoreductase (XOR) gene and its active isoform, xanthine oxidase (XO), in purine metabolism and cellular oxidative status led us to investigative their fluctuations in food deprivation induced food hoarding in mice. After, 10 h food deprivation, mice that hoarded lesser than 5 g were considered as 'low-hoarders' while mice that hoarded higher than 20 g were considered as 'high-hoarders'. Mice who hoarded between 5 to 20 g of food were excluded from study.

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Objectives: The aim of this study was to evaluate neurobehavioral toxicity of single-walled (SWNTs) and multiwalled carbon nanotubes (MWNTs) in mice.

Methods: Male NMRI mice were randomized into 5 groups ( n = 10 each): Normal control (NC) group was injected intraperitoneally (i.p.

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This study determined the effects of maternal dietary intake of hemp seed on reproductive and neurobehavioral end points of Wistar rats. Time-mated rats were fed 100% hemp seed (n  =  15), 50% hemp seed (n  =  15) or basal diet (n  =  15) once a day. The amount of food made available was based on control feed consumption records.

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Developmental effects of phytoestrogens were studied in offspring from pregnant rats who received a free-feeding diet of either rat chow that was very low in phytoestrogens (low phyto), rat chow low in phytoestrogens and given a genistein and diadzein supplement tablet (high phyto), or normal rat chow (normal) from the second week of pregnancy to weaning (postnatal day 21). Measurements of anogenital distance, daily weights, righting reflex and ultrasonic vocalizations were made on neonatal pups and plasma testosterone and corticosterone were assessed in adult males. There was a significant effect of phytoestrogen treatment on USV for all male and female offspring.

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