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Memory consolidation requires reactivation of only three neurons during sleep

A study found that memories acquired while awake are stored in a more permanent form during REM sleep, requiring the reactivation of only three adult-born neurons involved in memory formation. This process is synchronized with theta rhythm activity and essential for proper memory function.

University of Cincinnati study: Overlooked brain organ plays key role in promoting brain repair after stroke

Researchers found that removing the choroid plexus led to a reduction in newly born immature neurons, which are essential for repairing damage caused by stroke. The study suggests that the choroid plexus may be necessary to retain these cells and facilitate brain repair after injury.

SourceUniversity of Cincinnati·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJul 1, 2024

Jet lag’s harmful health impacts found to be caused by biological clock misalignment

Research at the University of Massachusetts Amherst shows that circadian disruption from jet lag can harm adult neurogenesis, which supports learning and memory. The study found that the Cryptochrome 1 gene regulates this process and that misalignment can lead to adverse health effects such as dementia and mental illness.

SourceUniversity of Massachusetts Amherst·JournaleNeuro·TypeExperimental study·DateApr 3, 2023

How to generate new neurons in the brain

Researchers at UNIGE and UNIL have discovered the importance of cell metabolism in reactivating quiescent neural stem cells, increasing new neurons in adult mice. This breakthrough could lead to potential treatments for conditions like depression and neurodegenerative diseases.

SourceUniversité de Genève·JournalScience Advances·TypeNews article·DateMar 1, 2023

Second stem cell type discovered in mouse brain

Scientists at Heidelberg University have identified a second stem cell population in the mouse brain, which is primarily involved in producing new neurons in the olfactory bulb. This discovery refutes the single stem cell type theory and suggests that both apical and basal stem cells are responsible for adult neurogenesis.

SourceHeidelberg University·JournalEMBO Reports·DateOct 5, 2022

Old neurons can block neurogenesis in mice

Researchers discovered that old neurons can block neurogenesis in mice, highlighting excessive senescence as a driving factor behind aging. By destroying senescent cells, the study showed enhanced hippocampal neurogenesis and cognitive function in middle-aged mice.

SourceCell Press·JournalStem Cell Reports·TypeExperimental study·DateJan 20, 2022

A new role for neurogenesis

Neurogenesis has been shown to have an additional role beyond learning and memory, with adult neural stem cells involved in regeneration. In a study published in JNeurosci, mice were exposed to a toxic substance that damaged the dentate gyrus, but recovered almost fully through neurogenesis.

Lessons learned from the adult neurogenesis debate

University of British Columbia professor Jason Snyder reviews the conflicting reports on adult neurogenesis in humans, pointing to methodological differences as a major issue. He argues that there is evidence for low rates of neurogenesis in specific brain regions, particularly the hippocampus.

SourceCell Press·JournalTrends in Neurosciences·DateJan 24, 2019

Removing molecule speeds relief from depression

A study suggests deleting a protein that regulates nerve cell growth can increase new nerve cells and speed up antidepressant effects, potentially offering a novel therapeutic approach for depression. The research found that mice without this protein showed improved symptoms of depression and anxiety even without medication.

Brain cell growth diminishes long before old age strikes, animal study shows

A Princeton University study found that brain cell growth in adult monkeys begins to decline soon after reaching adulthood, but it does not have to stop altogether. The team's research suggests that stimulating the human brain to generate neural cells more rapidly may be possible through methods such as exercise and socialization.

SourcePrinceton University·JournalProceedings of the National Academy of Sciences·DateOct 15, 2007

New neurons born in adult rat cortex

Scientists at NIMH have discovered newborn neurons in adult rat cortex that communicate via GABA, suggesting potential new treatments for depression and anxiety. The discovery adds to the scientific debate over adult neurogenesis and has implications for understanding brain disorders such as Alzheimer's and schizophrenia.

SourceNIH/National Institute of Mental Health·JournalJournal of Cell Biology·DateFeb 2, 2005