Guilherme Salgado Carrazoni, Pâmela B. Mello-Carpes
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引用次数: 0
Abstract
Maternal deprivation (MD) is a well-established paradigm used to study the effects of early-life stress on offspring brain development and behavior, particularly memory. Maternal exercise (ME) during pregnancy has been shown to influence offspring brain development and behavior. Our study examined whether ME protocols—stop, start, reduce, or maintain running during pregnancy—could protect offspring from MD-induced memory deficits and impact hippocampal oxidative balance. Initially, adult Wistar female rats were divided into five groups: non-exercised mothers (NE), mothers who exercised only before pregnancy (PRE), mothers who exercised before and reduced the intensity during pregnancy (RED), mothers who exercised at the same intensity before and during pregnancy (EQUAL), and mothers who started exercise during pregnancy (GEST). After delivery, the groups were subdivided into control (CT) and MD. At 90 days of age, the offspring underwent an object recognition (OR) memory test, and hippocampal lipid peroxidation and catalase (CAT) levels were measured. MD-induced memory deficits in male but not female offspring. Only the male PRE group showed a memory deficit, while all other exercise protocols prevented the MD-induced deficits. MD did not affect hippocampal cell membrane peroxidation, and PRE and EQUAL protocols increased catalase levels compared to NE + CT controls. Our results highlight that maintaining or starting exercise during pregnancy mitigates memory deficits induced by MD, particularly in male offspring.
期刊介绍:
Neuroscience Letters is devoted to the rapid publication of short, high-quality papers of interest to the broad community of neuroscientists. Only papers which will make a significant addition to the literature in the field will be published. Papers in all areas of neuroscience - molecular, cellular, developmental, systems, behavioral and cognitive, as well as computational - will be considered for publication. Submission of laboratory investigations that shed light on disease mechanisms is encouraged. Special Issues, edited by Guest Editors to cover new and rapidly-moving areas, will include invited mini-reviews. Occasional mini-reviews in especially timely areas will be considered for publication, without invitation, outside of Special Issues; these un-solicited mini-reviews can be submitted without invitation but must be of very high quality. Clinical studies will also be published if they provide new information about organization or actions of the nervous system, or provide new insights into the neurobiology of disease. NSL does not publish case reports.