Publications by authors named "Daisylea de Souza Paiva"

A cell membrane is an essential cellular component providing protection against the outer environment. It is also a host for proteins and carbohydrates responsible for, e.g.

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Medial ganglionic eminence (MGE) is one of the sources of inhibitory interneurons during development. Following transplantation in postnatal developing brain, MGE cells can increase local inhibition suggesting a possible protection to GABAergic dysfunction in brain disorders, such as epilepsy. Since it has been shown that MGE-derived cells harvested as neurospheres are able to suppress seizures, it might be important to investigate whether these protective effects would change in different seizure models.

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Astrocytes react to brain injury in a heterogeneous manner with only a subset resuming proliferation and acquiring stem cell properties in vitro. In order to identify novel regulators of this subset, we performed genomewide expression analysis of reactive astrocytes isolated 5 days after stab wound injury from the gray matter of adult mouse cerebral cortex. The expression pattern was compared with astrocytes from intact cortex and adult neural stem cells (NSCs) isolated from the subependymal zone (SEZ).

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Article Synopsis
  • The GABAergic system is crucial for regulating anxiety, and transplanting precursor cells from the medial ganglionic eminence (MGE) can help modify brain inhibition.
  • Two methods to obtain these cells are fresh dissociated cells and neurosphere dissociated cells, and their effects on anxiety behavior were compared in rat models.
  • The study found that only rats receiving freshly dissociated MGE cells showed reduced anxiety in behavioral tests, indicating these cells may enhance the GABAergic system's function more effectively than neurosphere-derived cells.
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Purpose: Diseases such as temporal lobe epilepsy, brain trauma and stroke can induce endothelial cell proliferation and angiogenesis in specific brain areas. During status epilepticus (SE), bone marrow-derived cells are able to infiltrate and proliferate, dramatically increasing at the site of injury. However, it is still unclear whether these cells directly participate in vascular changes induced by SE.

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