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Hippocampal functions, e.g. synaptic plasticity and hippocampal-dependent behavior, are influenced by the circulating levels of ovarian steroids in adult, female rats. The mechanisms underlying this estradiol-dependent modulation, however, are poorly understood. One possibility is that estradiol alters N-methyl-d-aspartate (NMDA)-receptor functioning in the hippocampus. Here, using the in vitro hippocampal...
Infection by lentiviruses such as human immunodeficiency virus (HIV) and Maedi-Visna virus (MVV) is associated with neurodegenerative disorders. We have investigated the neurotoxic mechanisms of a synthetic peptide of transactivating protein tat of MVV in striatal neuronal cultures. Tat peptide (but not control peptide) caused neuronal death, without affecting glial viability, in a time- and dose-dependent...
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