He notes that in his study there was evidence of stem cells
replacing lost neurons as well as other benefits conferred by the transplant.
Instead, children with autism spectrum disorder (ASD) have too many neurons in this part of the brain — the amygdala — and
lose neurons as they mature, according to researchers at the MIND Institute at the University of California, Davis.
They haven't shown that the new neurons can fit into existing circuits within the brain, let alone that they could replace
lost neurons in a diseased brain.
By manipulating the mice's living conditions and exposing male mice to female scents for long periods of time, the scientists showed that
males lost these neurons and their interest in courting females.
However, we can
lose those neurons faster or slower, and that's the difference between a fully functioning and a declining neurological state.
Harding also argues that because rodent studies suggest that these animals
do lose neurons to alcohol, they may be unreliable models for the human hippocampus.
My hippocampus, if I'm typical, has begun to
lose neurons even faster, perhaps 2 percent annually.
The continuation of this line of research is opening new avenues to identify what specific signals are used to promote this increased neurogenic response, with views focused in targeting neurogenesis as a therapeutic approach to promote the regeneration
of lost neurons.»
The males that were exposed to female urine for two
months lost the neurons that responded to the female pheromone.
Tissue analysis showed they'd
lost neurons in brain regions associated with learning and memory.
By manipulating the mice's living conditions and exposing male mice to female scents for long periods of time, the scientists showed that
males lost these neurons and, with them, their interest in courting females.
We can't
replace lost neurons but we hope that the drug will enable the unwell ones to function better.
By the time people show signs of dementia, their brains have
lost neurons.
Lose that neuron, and you no longer recognize grandma.
By the time people show signs of dementia, their brains have
lost neurons and no current therapy can revive dead cells.
«People say, «we'll just put stem cells in and we're going to replace
lost neurons.»
But we have the potential to do newborn screening in SMA, and really make a difference before these children begin to
lose neurons.»
Obviously, researchers would love to be able to replace all
the lost neurons and axons and restore normal connections in a damaged spinal cord.