Researchers analysed data of hundreds of UK children who had been born through IVF or ICSI (when the man has a low sperm count), testing the same groups of children every few years up to the age of 11. They found a positive association between artificial conception and cognitive development when a child was between the ages of three and five.
Both the literature and practice indicate that children can stand without support starting at around 9 months old. Yet, with practice, children can stand without support even before they are 4 months old. This is much earlier than has been reported in the literature.
A new computational modeling technique could indicate when atherosclerotic plaques will likely undergo rapid growth, reports a new study.
The virus that causes chickenpox — varicella zoster virus (VZV) — possesses a protein that could enhance its ability to hijack white blood cells and spread throughout the body, according to new research.
Researchers have identified a new way to potentially slow the fast-growing cells that characterize all types of cancer. By removing a specific protein from cells, they were able to slow the cell cycle, which is out of control in cancer. The findings were made in kidney and cervical cancer cells and are a long way from being applied in people, but could be the basis of a treatment option in the future.
Human social groups have a strange tendency to share responsibility for taking care of infants; parents, older siblings, and other adult relatives all help to nurture babies. The only other primates that take care of infants this way are marmosets, a group of small, highly social monkeys from South America. In another striking parallel to humans, infant marmosets also benefit from frequent feedback while learning their vocal calls.
As children age into adolescence and on into young adulthood, they show dramatic improvements in their ability to control impulses, stay organized, and make decisions. Those ‘executive functions’ of the brain are key factors in determining outcomes, including educational success, drug use, and psychiatric illness. Now, researchers have mapped the changes in the network organization of the brain that underlie those improvements in executive function.
Using fruit flies, researchers have discovered a cascade of molecular signals that program gene activity to drive the fly from one stage of maturation to the next, like a baby turning into an adult. Part of this programming involves alterations to the way DNA is packaged. Those alterations open certain regions of DNA to allow gene activity and close off other regions to prevent gene activity. These changes to DNA accessibility occur in sequence.
Researchers have discovered that a molecule which can sense the swelling of fat cells also controls a signaling pathway that allows fat cells to take up and store excess glucose. Mice missing this protein, known as SWELL1, gain less weight (fat) than normal mice on a high-fat diet, but also develop diabetes.
A new study finds that a 12-week program of instruction and practice of the Chinese martial art tai chi led to significantly reduced symptoms of depression in Chinese-Americans not receiving any other treatments.