Publications by authors named "Maria Luisa Figueira de Oliveira"

Objectives: Maternal protein malnutrition alters brain functioning, impairing fetal development. Physical exercise during gestation benefits the fetal organism from maternal adaptive changes that may be neuroprotective. This study evaluated the effect of a low-protein diet associated with maternal voluntary physical activity (VPA) on rats' behavioral and brain electrophysiological parameters in the mother-pup dyad.

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Intermittent fasting (IF) and physical exercise (PE) have beneficial psychological and physiological effects, improving memory and anxiety-like behavior. However, the impact of this combination on brain electrophysiological patterns is unknown. We aimed to evaluate the behavior and parameters of a brain excitability-related phenomenon named cortical spreading depression (CSD) in young rats (31-87 days of life) submitted to IF and treadmill PE for eight weeks.

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Article Synopsis
  • The study investigates the effects of melatonin (MLT) on anxiety and memory in developing rats, analyzing different doses (10 mg/kg and 40 mg/kg) administered early in life.
  • MLT-10 showed a reduction in anxiety and improved memory tasks, whereas MLT-40 did not have these positive effects.
  • Additionally, varying doses of MLT influenced the speed of cortical spreading depression (CSD), with MLT-10 slowing down CSD propagation, while MLT-40 accelerated it, indicating dose-dependent effects on brain excitability.
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Hyperprolactinemia is a pathological condition resulting from increased prolactin that directly affects reproduction, as this condition inhibits the release of LH, FSH and gonadal steroidogenesis, bringing several negative clinical associations in reproduction. In contrast, melatonin (MEL) plays an important role in the regulation of steroidogenesis and modulates damages to the process of spermatogenesis. The objective was to analyze the protective effects of exogenous melatonin on the testis of hyperprolactinemic adult rats.

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Maternal physical activity may impact behavioral and electrophysiological aspects of brain function, with short- and long-term effects on pre- and postnatal neurodevelopment of the offspring. This study evaluated in the rat the effects of maternal voluntary physical activity (MVPA) on food intake and weight gain in the dams, as well as anxiety-like behavior, short-term memory and the brain excitability-related phenomenon known as cortical spreading depression (CSD) on the mother-pup dyad. Female Wistar rats (n=33) were individually housed in cages containing a running wheel for a 30-days adaptation period before mating.

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Article Synopsis
  • The study aims to review literature on how COVID-19 affects pregnant women, focusing on placental changes and potential vertical transmission of the virus.
  • A systematic search was conducted across several scientific databases using specific keywords related to pregnancy and COVID-19.
  • Findings show some evidence of the virus in the amniotic fluid and umbilical cord, but overall, there is limited evidence of direct viral transmission to the placenta and associated morphological changes.
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