The brain cells of patients with bipolar disorder, characterized by severe swings between depression and elation, are more sensitive to stimuli than other people’s brain cells, researchers have discovered.
The finding, published in the journal Nature, is among the first to show at a cellular level how the disorder affects the brain. Moreover, it reveals why some patients respond to treatment with lithium while others don’t.
Bipolar disorder affects more than five million Americans and is often a challenge to treat. If patients’ severe mood swings aren’t helped with lithium, doctors often piece together treatment plans with antipsychotic drugs, antidepressants and mood stabilizers. But they often help only the depressive swings of bipolar or the opposing manic swings, not both.
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