Melatonin as a treatment for mood disorders: a systematic review.

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Title: Melatonin as a treatment for mood disorders: a systematic review.
Authors: De Crescenzo, F., Lennox, A., Gibson, J. C., Cordey, J. H., Stockton, S., Cowen, P. J., Quested, D. J.
Source: Acta Psychiatrica Scandinavica. Dec2017, Vol. 136 Issue 6, p549-558. 10p. 1 Diagram, 3 Charts.
Subjects: Melatonin, Affective disorders, Mental health services, Seasonal affective disorder, Therapeutics research, Treatment effectiveness
Abstract: Objective Melatonin has been widely studied in the treatment of sleep disorders and evidence is accumulating on a possible role for melatonin influencing mood. Our aim was to determine the efficacy and acceptability of melatonin for mood disorders. Method We conducted a comprehensive systematic review of randomized clinical trials on patients with mood disorders, comparing melatonin to placebo. Results Eight clinical trials were included; one study in bipolar, three in unipolar depression and four in seasonal affective disorder. We have only a small study on patients with bipolar disorder, while we have more studies testing melatonin as an augmentation strategy for depressive episodes in major depressive disorder and seasonal affective disorder. The acceptability and tolerability were good. We analyzed data from three trials on depressive episodes and found that the evidence for an effect of melatonin in improving mood symptoms is not significant (SMD = 0.37; 95% CI [−0.05, 0.37]; P = 0.09). The small sample size and the differences in methodology of the trials suggest that our results are based on data deriving from investigations occurring early in this field of study. Conclusion There is no evidence for an effect of melatonin on mood disorders, but the results are not conclusive and justify further research. [ABSTRACT FROM AUTHOR]
Copyright of Acta Psychiatrica Scandinavica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Melatonin as a treatment for mood disorders: a systematic review.
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  Data: <searchLink fieldCode="AR" term="%22De+Crescenzo%2C+F%2E%22">De Crescenzo, F.</searchLink><br /><searchLink fieldCode="AR" term="%22Lennox%2C+A%2E%22">Lennox, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Gibson%2C+J%2E+C%2E%22">Gibson, J. C.</searchLink><br /><searchLink fieldCode="AR" term="%22Cordey%2C+J%2E+H%2E%22">Cordey, J. H.</searchLink><br /><searchLink fieldCode="AR" term="%22Stockton%2C+S%2E%22">Stockton, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Cowen%2C+P%2E+J%2E%22">Cowen, P. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Quested%2C+D%2E+J%2E%22">Quested, D. J.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Acta+Psychiatrica+Scandinavica%22">Acta Psychiatrica Scandinavica</searchLink>. Dec2017, Vol. 136 Issue 6, p549-558. 10p. 1 Diagram, 3 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Melatonin%22">Melatonin</searchLink><br /><searchLink fieldCode="DE" term="%22Affective+disorders%22">Affective disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Mental+health+services%22">Mental health services</searchLink><br /><searchLink fieldCode="DE" term="%22Seasonal+affective+disorder%22">Seasonal affective disorder</searchLink><br /><searchLink fieldCode="DE" term="%22Therapeutics+research%22">Therapeutics research</searchLink><br /><searchLink fieldCode="DE" term="%22Treatment+effectiveness%22">Treatment effectiveness</searchLink>
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  Label: Abstract
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  Data: Objective Melatonin has been widely studied in the treatment of sleep disorders and evidence is accumulating on a possible role for melatonin influencing mood. Our aim was to determine the efficacy and acceptability of melatonin for mood disorders. Method We conducted a comprehensive systematic review of randomized clinical trials on patients with mood disorders, comparing melatonin to placebo. Results Eight clinical trials were included; one study in bipolar, three in unipolar depression and four in seasonal affective disorder. We have only a small study on patients with bipolar disorder, while we have more studies testing melatonin as an augmentation strategy for depressive episodes in major depressive disorder and seasonal affective disorder. The acceptability and tolerability were good. We analyzed data from three trials on depressive episodes and found that the evidence for an effect of melatonin in improving mood symptoms is not significant (SMD = 0.37; 95% CI [−0.05, 0.37]; P = 0.09). The small sample size and the differences in methodology of the trials suggest that our results are based on data deriving from investigations occurring early in this field of study. Conclusion There is no evidence for an effect of melatonin on mood disorders, but the results are not conclusive and justify further research. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Acta Psychiatrica Scandinavica is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Dec2017
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