Hormones released after a brain injury contribute to movement problems on the left and right sides of the body, scientists from Uppsala University and elsewhere can now show in a new study in rats. The results also suggest that hormone-blocking treatments may help counteract these effects, a finding that has implications for treating people with traumatic brain injuries or stroke. The study has been published in eLife.
A stroke or injury to one side of the brain causes movement difficulties on the opposite side of the body. Scientists have previously thought that this is because nerves from one side of the brain control activity on the opposite side. But recent studies have shown that giving rats without a brain injury certain hormones can cause movement responses similar to human motor deficits on one side of the body.
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