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Nocturnal melatonin secretion in suicidal patients with multiple sclerosis
1NeuroCommunication Research Laboratories, Danbury, CT 06811.
The International Journal of Neuroscience
|July 1, 1993
Summary
Multiple sclerosis patients with suicidal ideation show significantly lower nocturnal melatonin levels compared to non-suicidal patients. This suggests a biological link between the pineal gland and suicidality in MS.
Area of Science:
- Neuroscience
- Psychiatry
- Endocrinology
Background:
- Multiple sclerosis (MS) involves CNS demyelination, causing diverse neurological deficits.
- MS patients have an elevated risk of suicide, a significant cause of mortality.
- Studies link reduced brain serotonin and melatonin in suicide victims.
Purpose of the Study:
- To investigate nocturnal plasma melatonin levels in suicidal versus non-suicidal MS patients.
- To test the hypothesis of lower melatonin secretion in suicidal MS patients during symptom exacerbation.
Main Methods:
- Assessed nocturnal plasma melatonin levels in 28 relapsing MS patients.
- Compared melatonin levels between 6 suicidal MS patients and non-suicidal MS patients.
- Controlled for demographic data and psychotropic drug use.
Main Results:
- Suicidal MS patients had significantly lower mean melatonin levels (19.0 pg/ml) than non-suicidal MS patients (45.5 pg/ml).
- No significant demographic differences or psychotropic drug use differences were found between groups.
Conclusions:
- Findings support the involvement of the pineal gland in MS-related suicidality.
- Suggests a biological, rather than purely reactive, etiology for psychiatric symptoms in MS.