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scopolamine/maíz
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7 resultados
Brief postnatal PBDE exposure alters learning and the cholinergic modulation of attention in rats.
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Polybrominated diphenyl ethers (PBDEs), chemicals commonly used as flame retardants, are ubiquitous in the environment and bioaccumulate in humans and wildlife. However, little is known about their potential toxicological properties. In the present study, male Long-Evans rats orally administered the
Chronic steroid sulfatase inhibition by (p-O-sulfamoyl)-N-tetradecanoyl tyramine increases dehydroepiandrosterone sulfate in whole brain.
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Dehydroepiandrosterone sulfate (DHEAS) is a neurosteroid which functions as a negative allosteric modulator of the GABA(A) receptor-gated chloride channel. Steroid sulfatase inhibitors including (p-O-sulfamoyl)-N-tetradecanoyl tyramine (DU-14), can potentiate the blockade of the amnestic effects of
Gestational-lactational exposure to Aroclor 1254 impairs radial-arm maze performance in male rats.
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Developmental exposure to polychlorinated biphenyls (PCBs) has been associated with cognitive deficits in children. The current study assessed effects of gestational and lactational exposure to a commercial PCB mixture, Aroclor 1254 (A1254), on spatial learning and memory in rats, using the
Effect of Dietary Restriction on Toxicology and Carcinogenesis Studies in F344/N Rats and B6C3F1 Mice.
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Studies were conducted to compare outcomes when four chemicals were evaluated under typical NTP bioassay conditions as well as under protocols employing dietary restriction. Specific experiments were designed to evaluate the effect of diet restriction on the sensitivity of the bioassay toward
The effect of steroid sulfatase inhibition on learning and spatial memory.
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Steroid sulfatase inhibitors can enhance the concentration of the neurosteroid DHEAS in rat brain. Previous studies have demonstrated that the steroid sulfatase inhibitor (p-O-sulfamoyl)-N-tetradecanoyl tyramine (DU-14) could reverse scopolamine induced amnesia in rats in a passive avoidance memory
Effect of central and peripheral cholinergic antagonists on chlorpyrifos-induced changes in body temperature in the rat.
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Exposure to the organophosphate (OP)-based pesticide chlorpyrifos (CHP) in the rat results in an initial period of hypothermia lasting < 24 h, followed by a fever lasting 48-72 h. The purpose of this study was to determine how cholinergic pathways participate in the mediation of the thermoregulatory
Muscarinic, nicotinic and GABAergic receptor signaling differentially mediate fat-conditioned flavor preferences in rats.
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Rats display conditioned flavor preferences (CFP) for fats. Previous studies demonstrated that whereas expression of an already-acquired corn oil (CO)-CFP was mildly reduced by dopamine (DA) D1, DA D2, NMDA or opioid receptor antagonists, the acquisition or learning of CO-CFP was eliminated by NMDA
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