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Serotonin and myoclonus

M H Van Woert, R Jutkowitz, D Rosenbaum

Monographs in Neural Sciences

|January 1, 1976

Summary

This summary is machine-generated.

Low brain serotonin may cause myoclonus. Supplementing with L-5-hydroxytryptophan (L-5-HTP) and carbidopa effectively reduced myoclonus symptoms, particularly in postanoxic cases.

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Area of Science:

Neuroscience
Biochemistry
Pharmacology

Background:

Myoclonus is a neurological disorder characterized by involuntary muscle jerks.
Serotonin, a neurotransmitter, plays a crucial role in motor control.
Previous research suggests a link between serotonin metabolism and myoclonus.

Purpose of the Study:

To investigate serotonin metabolism in patients with myoclonus.
To evaluate the therapeutic efficacy of L-5-hydroxytryptophan (L-5-HTP) combined with carbidopa for myoclonus treatment.

Main Methods:

Biochemical analysis of serotonin metabolites in cerebrospinal fluid.
Clinical trial administering L-5-HTP and carbidopa to 19 myoclonus patients.
Assessment of myoclonus frequency and intensity before and after treatment.

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Main Results:

Significantly decreased cerebrospinal fluid 5-hydroxyindoleacetic acid levels in patients with intention myoclonus.
Dramatic reduction in myoclonus frequency and intensity with L-5-HTP and carbidopa treatment.
Treatment was particularly effective in postanoxic intention myoclonus.

Conclusions:

A deficiency in brain serotonin is implicated in the pathophysiology of myoclonus.
L-5-HTP plus carbidopa therapy shows promise for treating myoclonus by replenishing brain serotonin.
Potential side effects include anorexia, nausea, vomiting, diarrhea, and mental stimulation.