Affective disorders and S-adenosylmethionine: a new hypothesis

Area of Science:

• Neuroscience
• Biochemistry
• Psychiatry

Background:

• S-Adenosyl-L-methionine (AdoMet) shows potential as an antidepressant.
• Affective disorders have complex clinical and genetic underpinnings.

Purpose of the Study:

• To propose a novel hypothesis for AdoMet's antidepressant mechanism.
• To link AdoMet's biochemical function to mood regulation.

Main Methods:

• Review of existing biochemical pathways involving AdoMet.
• Integration of current knowledge on affective disorders.

Main Results:

• Postulation of a central nervous system (CNS) substance, 'barinine', methylated by AdoMet.
• Hypothesized roles for methylbarinine (mood-elevating) and barinine (neutral).

Conclusions:

• Depression may arise from reduced methylbarinine levels.
• Mania could result from elevated methylbarinine concentrations.
• AdoMet's action is potentially mediated through the barinine methylation cycle.