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References in periodicals archive ?
The loss of ASPM leads to a premature switch from symmetric to asymmetric cell division, decreasing the number of postmitotic neurons in the developing cortex, reflected in a reduced cortical surface area and a simplified gyral pattern.
McKay, "Development of neuronal precursor cells and functional postmitotic neurons from embryonic stem cells in vitro," Mechanisms of Development, vol.
In the vertebrate brain, postmitotic neurons are generated from neuroepithelial cells and they start to extend long axonal processes and relatively short, branched dendrites after their migration to appropriate brain regions.
Several studies evidenced data suggesting that EMX2 gene may be involved in the modulation of cell proliferation of cortical neuroblasts and/or cell migration of postmitotic neurons, as it is known that these cells reach their final destination in the mature cortex according to their generation date.
In the chick neuroretina, we observed a marked decrease in the density of labeled cells at later stages, as expected during the transition from proliferating neuroepithelial cells to postmitotic neurons. A similar trend was observed in the mouse retina, although labeling was irregular in the most central area surrounding the optic nerve head.
By contrast, postmitotic neurons accumulate over time.
Because most neurodevelopmental disorders are categorized as migrational disorders (Gleeson 2001), environmental agents that preferentially target the DNA of immature postmitotic neurons would be expected to disrupt the transcriptional events that control the key steps involved in laying down the final cytoarchitecture of the mature brain.
In the present study, our goal was to determine the relationship between the sensitivity of immature postmitotic neurons to MAM or HN2 and their ability to damage DNA.
In the embryonic development stages of vertebrates, neuronal cells undergo a period of programmed cell death, in which a portion of the organism's postmitotic neurons degenerate and die.
Like ttx-3, lin-11 expression is also maintained in postmitotic neurons throughout adulthood.
Interestingly, reduced TBR2 and WDR62 expression in NSPs corresponded with a trend towards increased TUJ1 expression, a marker of postmitotic neurons (Figure 3(b)).
(2,3) Soon after birth, postmitotic neurons are generally thought to migrate radially from the ventricular zone (VZ) in the orientation of the radial glial processes by radial migration.