Medications

Why ketamine is a speedster antidepressant

Ketamine is the speedster of antidepressants, working within hours compared to more common antidepressants that can take several weeks. But ketamine can only be given for a limited amount of time because of its many side ...

Medical research

Old neurons can block neurogenesis in mice

Destroying senescent cells in the aging stem cell niche enhances hippocampal neurogenesis and cognitive function in mice, researchers report January 20 in the journal Stem Cell Reports.

Alzheimer's disease & dementia

Seizures in Alzheimer's mouse model disrupt adult neurogenesis

Memory impairment and mood changes are typically observed in patients with Alzheimer's disease but what disturbs these neuronal functions is unclear. Some researchers have proposed that alterations in the production of new ...

Neuroscience

Evidence found of neurogenesis in people up to age 87

A team of researchers affiliated with several institutions in Spain has found evidence of neurogenesis in the brains of people right up to old age. In their paper published in the journal Nature Medicine, the group describes ...

Medical research

Why the sense of smell declines in old age

As mammals age, their sense of smell deteriorates. In a study published in the journal Cell Reports, an interdisciplinary research team at Helmholtz Zentrum M√ľnchen and the University Medical Centre Mainz investigated why ...

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Neurogenesis

Neurogenesis (birth of neurons) is the process by which neurons are generated from neural stem and progenitor cells. Most active during pre-natal development, neurogenesis is responsible for populating the growing brain with neurons. Recently neurogenesis was shown to continue in several small parts of the brain of mammals: the hippocampus and the subventricular zone. Studies have indicated that hormones, such as testosterone in vertebrates and ecdysone in invertebrates, have an influence on the rate of neurogenesis.

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