Hippocampal Primary Culture
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Caracterização das vias de morte celular induzida pela metilecgonidina, produto da pirólise da cocaína / Neurotoxicity of anydroecgonine methyl ester, a crack cocaine pyrolysis product
A cocaína é considerada a principal droga de abuso utilizada na América do Sul, sendo que o crack é a via de administração que mais cresceu nos últimos anos. Cabe salientar que o usuário do crack sofre ação tanto da cocaína quanto das substâncias advindas da sua pirólise, dentre elas a metilecgonidina (AEME). Trabalho publicado pelo nosso grupo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2012
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2. Neurodegenerative effects of methylecgonidine and cocaine in hippocampal primary cell culture / Efeitos neurodegenerativos da metilecgonidina e da cocaína em cultura celular primária de hipocampo
O uso da cocaína na forma de crack vem crescendo nos últimos anos quando comparado às demais vias de administração. Contribuem para esse fato a obtenção quase imediata de efeitos e a maior facilidade de uso, que dispensa a necessidade de material injetável. O usuário de crack sofre os efeitos não só da cocaína, mas também de seu produto de piró
Publicado em: 2009
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3. Proliferation, differentiation, and long-term culture of primary hippocampal neurons.
Primary embryonic hippocampal neurons can develop morphologically and functionally in culture but do not survive more than a few weeks. It has been reported that basic fibroblast growth factor (bFGF) promotes the survival of and neurite elongation from fetal hippocampal neurons. We report that bFGF, in a dose-dependent manner, can induce the survival (50 pg
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4. Immortal rat hippocampal cell lines exhibit neuronal and glial lineages and neurotrophin gene expression.
Clonal cell lines of rat embryonic hippocampal origin have been developed by using retroviral transduction of temperature-sensitive simian virus 40 large tumor antigens. The cell lines undergo morphological differentiation at the nonpermissive temperature and in response to differentiating agents. Immunocytochemical analysis indicates that various lines are
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5. Expression of a dominant negative TrkB receptor, T1, reveals a requirement for presynaptic signaling in BDNF-induced synaptic potentiation in cultured hippocampal neurons
We have developed a method to analyze the relative contributions of pre- and postsynaptic actions of a particular gene product in neurons in culture and potentially in slices using adenovirus-mediated gene transfer. A recombinant virus directed the expression of both a GFP reporter protein and TrkB.T1, a C-terminal truncated dominant negative TrkB neurotroph
The National Academy of Sciences.
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6. Sorting and directed transport of membrane proteins during development of hippocampal neurons in culture
Hippocampal neurons in culture develop morphological polarity in a sequential pattern; axons form before dendrites. Molecular differences, particularly those of membrane proteins, underlie the functional polarity of these domains, yet little is known about the temporal relationship between membrane protein polarization and morphological polarization. We took
The National Academy of Sciences.
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7. Borna Disease Virus Glycoprotein Is Required for Viral Dissemination in Neurons
Borna disease virus (BDV) is a nonsegmented negative-strand RNA virus with a tropism for neurons. Infection with BDV causes neurological diseases in a wide variety of animal species. Although it is known that the virus spreads from neuron to neuron, assembled viral particles have never been visualized in the brains of infected animals. This has led to the hy
American Society for Microbiology.
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8. Calcium-dependent glutamate release during neuronal development and synaptogenesis: different involvement of omega-agatoxin IVA- and omega-conotoxin GVIA-sensitive channels.
Hippocampal neurons maintained in primary culture recycle synaptic vesicles and express functional glutamate receptors since early stages of neuronal development. By analyzing glutamate-induced cytosolic calcium changes to sense presynaptically released neurotransmitter, we demonstrate that the ability of neurons to release glutamate in the extracellular spa
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9. Estimates for the pool size of releasable quanta at a single central synapse and for the time required to refill the pool.
Local superfusion of limited dendritic areas with hypertonic or hyperkalemic solutions stimulates the release of quanta from a small population of synapses made on rodent hippocampal neurons maintained in primary culture, and each quantal event can be detected in the postsynaptic neuron. With maintained stimulation, the initial release rate is about 20 quant
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10. Multiple spatiotemporal modes of actin reorganization by NMDA receptors and voltage-gated Ca2+ channels
Cytoskeleton is believed to contribute to activity-dependent processes underlying neuronal plasticity, such as regulations of cellular morphology and localization of signaling proteins. However, how neuronal activity controls actin cytoskeleton remains obscure. Taking advantage of confocal imaging of enhanced GFP-actin in the primary culture of hippocampal n
National Academy of Sciences.
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11. Increased Connexin 43 Expression as a Potential Mediator of the Neuroprotective Activity of the Corticotropin-Releasing Hormone
CRH is a major central stress mediator, but also a potent neuroprotective effector. The mechanisms by which CRH mediates its neuroprotective actions are largely unknown. Here, we describe that the gap junction molecule connexin43 (Cx43) mediates neuroprotective effects of CRH toward experimentally induced oxidative stress. An enhanced gap junction communicat
The Endocrine Society.
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12. Beta-amyloid neurotoxicity requires fibril formation and is inhibited by congo red.
beta-Amyloid (beta A) is normally produced as a nontoxic soluble peptide. In Alzheimer disease, beta A aggregates and accumulates in the brain as inert diffuse plaques or compact plaques associated with neurodegenerative changes. To determine the relationship of neurotoxicity to the physical state of beta A, we created (i) nonamyloidogenic amorphous aggregat