Release date: 2007-03-22
According to the Australian Broadcasting Corporation reported on the 15th, a new study showed that bullying may challenge the survival of new nerve cells in the brain, and may even lead to depression.
In a study of bullying, the researchers found that old mice always threaten mice, and bullied mice produce new nerve cells in the brain that is responsible for memory and emotion. But later, most of the new cells died. Research suggests that stress kills new nerve cells. This finding may help researchers find potential ways to treat depression.
Daniel Peterson, an associate professor at the Roslinde Franklin University of Medical Sciences in Chicago, led the study. "If we can keep these new nerve cells alive, maybe we can prevent common depression." Mori’s team put two old mice and a little mouse in the same cage for about 20 minutes. The old mouse quickly pushed the mouse to the corner and held the mouse in a position where it could not move. A few mouthfuls. In the face of the big guys, the little mice became timid and showed signs of depression, and their stress hormones were six times higher than usual.
Based on previous research, Peterson and colleagues hope that increased levels of stress hormones can prevent new nerve cells from growing or killing them immediately. But, on the contrary, when the researchers examined the mouse brain under a microscope, it was discovered that new cells had been produced, but within a week, only one-third of them survived.
He plans to do further research to see what role antidepressants play in the rescue of nerve cells. However, because most antidepressants on the market take weeks to take effect, he believes that the results may not be known quickly. Peterson said, “We see that stress can change the environment, and that is what we are now. Things that need to be understood, this means telling us what kind of treatment might be useful."
—— Information from: Sina Health
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