Hippocampal Formation
Mostrando 1-12 de 182 artigos, teses e dissertações.
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1. Perinatal effects of scorpion venoms: maternal and offspring development
Abstract Scorpion envenomation is a public health problem, especially in tropical and subtropical countries. Considering the high incidence of scorpionism in some areas, pregnant women and nursing mothers may be possible victims. Scorpion stings alter the release of neurotransmitters and some cytokines. These mediators act as organizers and programmers in th
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 08/02/2018
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2. Maternal Exercise during Pregnancy Increases BDNF Levels and Cell Numbers in the Hippocampal Formation but Not in the Cerebral Cortex of Adult Rat Offspring
Clinical evidence has shown that physical exercise during pregnancy may alter brain devel- opment and improve cognitive function of offspring. However, the mechanisms through which maternal exercise might promote such effects are not well understood. The present study examined levels of brain-derived neurotrophic factor (BDNF) and absolute cell num- bers in
Publicado em: 25/08/2016
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3. Microglia and neurons in the hippocampus of migratory sandpipers
The semipalmated sandpiper Calidris pusilla and the spotted sandpiper Actitis macularia are long- and short-distance migrants, respectively. C. pusilla breeds in the sub-arctic and mid-arctic tundra of Canada and Alaska and winters on the north and east coasts of South America. A. macularia breeds in a broad distribution across most of North America from the
Braz J Med Biol Res. Publicado em: 17/11/2015
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4. Early postnatal protein malnutrition impairs recognition memory in rats (Rattus norvegicus)
The initial period of postnatal life is critical for brain development in both rodents and humans. Protein malnutrition imposed during this period produces irreversible consequences that include structural, neurochemical, and functional changes in the central nervous system, leading to long-term alterations in behavioral and cognitive parameters, such as mem
Psychol. Neurosci.. Publicado em: 16/05/2014
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5. The Rey Auditory Verbal Learning Test: normative data for the Arabic-speaking population and analysis of the differential influence of demographic variables
The Rey Auditory Verbal Learning Test (RAVLT) is the one of the most widely used neuropsychological tests of verbal memory.It has been translated into numerous languages including Spanish, German, Arabic, Hebrew, Czech, Portuguese, and English. The present study examined the hypothesis that the learning of word lists forms an algorithmic pattern across all c
Psychol. Neurosci.. Publicado em: 2012-06
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6. Neuropsychological and neurobiological markers of the preclinical stage of Alzheimer's disease
Dementia, especially Alzheimer's disease, has a high prevalence in the elderly population. Therefore, identifying individuals who are at a high risk for early diagnosis is crucial to allow both pharmacological and behavioral therapeutic interventions, which in some cases can delay the progression of dementia. This paper describes neuropsychological and neuro
Psychology & Neuroscience. Publicado em: 2011
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7. Participação das vias de estresse oxidativo na neuroproteção mediada pelo treinamento físico em fatias cerebrais submetidas à privação de oxigênio e glicose
Ischemia leads to a variety of pathological events, including excitotoxicity, inflammation, delayed neuronal dysfunction and cell death through hyperactivation of glutamate receptors and production of free radicals, such as nitric oxide (NO). The mechanism by which cerebral excess formation of NO, which mediates neuronal death involving energy depletion, lip
Publicado em: 2011
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8. Differential patterns of myosin Va expression during the ontogenesis of the rat hippocampus
Myosin Va is an actin-based, processive molecular motor protein highly enriched in the nervous tissue of vertebrates. It has been associated with processes of cellular motility, which include organelle transport and neurite outgrowth. The in vivo expression of myosin Va protein in the developing nervous system of mammals has not yet been reported. We describ
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-09
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9. Effect of inhibitory avoidance training on [3H]-glutamate binding in the hippocampus and parietal cortex of rats
Glutamate receptors have been implicated in memory formation. The aim of the present study was to determine the effect of inhibitory avoidance training on specific [3H]-glutamate binding to membranes obtained from the hippocampus or parietal cortex of rats. Adult male Wistar rats were trained (0.5-mA footshock) in a step-down inhibitory avoidance task and we
Publicado em: 2010
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10. Quantification of microRNAs in the central nervous system : implications / Quantificação de diferentes microRNAs no sistema nervoso central : implicações nos mecanismos de desenvolvimento e processos fisiopatologicos
MicroRNAs are a new class of small RNA molecules (21-24 nucleotide-long) that negatively regulate gene expression either by translational repression or target mRNA degradation. It is believed that about 30% of all human genes are targeted by these molecules. MiRNAs are involved in many important biological processes including cell differentiation, embryonic
Publicado em: 2010
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11. Effects of age and chronic sleep restriction in the calcium signaling and cell death in the hippocampal formation / Estudo da arquitetura do sono, da sinalização de cálcio e apoptose na formação hipocampal de ratos adultos e senescentes submetidos à restrição crônica de sono
O envelhecimento é acompanhado de uma diminuição progressiva na capacidade fisiológica, o que torna o organismo mais sensível a eventos estressores. Alterações orgânicas e funcionais são observadas com o avanço da idade. O prejuízo da memória observado nessa fase da vida é agravado pelas doenças neurodegenerativas associadas ao envelhecimento.
Publicado em: 2010
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12. Neurofisiologia hipocampal durante sessões de sono intercaladas por exploração espacial: Reverberação do passado ou predição do futuro?
The ability to predict future rewards or threats is crucial for survival. Recent studies have addressed future event prediction by the hippocampus. Hippocampal neurons exhibit robust selectivity for spatial location. Thus, the activity of hippocampal neurons represents a cognitive map of space during navigation as well as during planning and recall. Spatial
Publicado em: 2009