Fish Oil may Treat Depression

Fish oil, when tested on patient-derived adult stem cells, created an antidepressant response that could be used as an effective treatment option for major depressive disorder, reports a new study.

Fish oil is an easy-to-get and a natural product that could be an effective treatment for depression, reports a new study. The findings of the study are published in the journal Molecular Psychiatry.//

The study shows that patient-derived adult stem cells can be used to model major depressive disorder and test how a patient may respond to medication.

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Using stem cells from adults with a clinical diagnosis of depression, the University of Illinois at Chicago researchers who conducted the study also found that fish oil, when tested in the model, created an antidepressant response.

UIC's Mark Rasenick, the principal investigator of the study, says that the research provides a number of novel findings that can help scientists better understand how the brain works and why some people respond to drug treatment for depression, while others experience limited benefits from antidepressant medication.

"It was also exciting to find scientific evidence that fish oil may be an effective treatment for depression," said Rasenick, UIC distinguished professor of physiology and biophysics and psychiatry at the College of Medicine.

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In the study, the UIC researchers used skin cells from adults with depression that were converted into stem cells at Massachusetts General Hospital and then directed those stem cells to develop into nerve cells. The skin biopsies were taken from two types of patients: people who previously responded to antidepressant treatment and people who have previously been resistant to antidepressants.

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When fish oil was tested, the models from treatment-sensitive and treatment-resistant patients both responded.

Rasenick says the response was similar to that seen from prescription antidepressants, but it was produced through a different mechanism.

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"We saw that fish oil was acting, in part, on glial cells, not neurons," said Rasenick, who is also a research career scientist at Jesse Brown VA Medical Center and president and chief scientific officer at Pax Neuroscience, a UIC startup company. "For many years, scientists have paid scant attention to glia a type of brain cell that surrounds neurons -- but there is increasing evidence that glia may play a role in depression. Our study suggests that glia may also be important for antidepressant action.

"Our study also showed that a stem cell model could be used to study response to treatment and that fish oil as a treatment, or companion to treatment, for depression warrants further investigation," Rasenick said.

Source-Eurekalert