Sentences with phrase «of immature neurons»

Castration and training in a spatial task alter the number of immature neurons in the hippocampus of male mice.

To start, the scientists examined previous experiments and identified several transcription factors — managerial proteins that switch on the activity of large sets of genes — that seemed crucial to the ability of immature neurons to develop into adult sensory neurons.

They found that dendrites in adult mouse brains were studded with long spines, a hallmark of immature neurons.

Not exact matches

Smell neurons begin as identical precursor cells, immature cells that have not yet «decided» which type of nerve cell they will become.

In theory, if a single mutation popped up that caused immature neurons to undergo just one extra cycle of cell division, that could double the final size of the cortex.

ALMOST BRAIN A cross section of an immature lab - grown approximation of a human brain reveals neurons (green) and neuron - producing stem cells (red).

«Neurons become increasingly more complex in their extensions and connections as the brain matures, and the maturational delays reported previously in animal models and human behavioral studies of iron deficiency would predict that lower iron intake would produce neurons in cortical gray matter that are structurally less complex and more imNeurons become increasingly more complex in their extensions and connections as the brain matures, and the maturational delays reported previously in animal models and human behavioral studies of iron deficiency would predict that lower iron intake would produce neurons in cortical gray matter that are structurally less complex and more imneurons in cortical gray matter that are structurally less complex and more immature.

Immature sympathetic neurons respond to NGF with a burst of metabolic activity that provides the material necessary for the growth of the nerve fiber and the manufacture of molecules of neurotransmitter.

It is not yet known whether the dramatic and selective effects of the NGF antibodies are due to a direct toxic action of the antibodies on immature sympathetic neurons or to an inactivation by the antibodies of circulating molecules of NGF, thereby indirectly causing the death of the sympathetic neurons by depriving them of the NGF they need in order to survive.

In addition to apparently being essential to the survival of immature sympathetic neurons NGF seems to play a vital role in guiding nerve fibers toward their corresponding target organs.

Immature sympathetic neurons were seeded into the central chamber in the presence of NGF and allowed to send out growing fibers under the silicon barriers along scratches made on the bottom of the culture dish.

Shortly after this discovery K. Unsicker and his colleagues at Johns Hopkins University found that immature chromaffin cells obtained from the medulla (inner part) of the adrenal gland and cultured in the presence of NGF acquire the biochemical and morphological properties of sympathetic neurons.

Jason Lee / Reuters In the next few months, surgeons in the Chinese city of Zhengzhou will carefully drill through the skulls of people with Parkinson's disease and inject 4 million immature neurons derived from human embryonic stem cells into their brains.

It could also distinguish dead from living cells, spot neurons within groups of cells that included astrocytes and immature dividing cells, and even tell a dendrite from an axon.

Overall, the study found, older and younger brains had similar numbers of «intermediate» progenitor cells and «immature» neurons — signaling that older people had a similar capacity for generating new cells as young people.