Not a very informative article...
I doubt alcohol has much of direct effect, but perhaps an indirect one.
MDMA acts upon the SERT transporter, a protein that removes serotonin from the synapse.
This transporter is NOT a neuron - but part of the GLIAL brain.
Your glial cells make up more than HALF of your entire brain, and the next frontier in brain research may be here.
Rather than communicating in chains with electrical impulses, glial cells communicate with each other through ions that scatter outward.
Scientists have also found that these glial cells can listen in on neuron activity - and influence it in some cases.
Glial cells can destroy connections by killing neurons, with glutamate for example.
They can also save neurons by spraying anti-oxidants like gluthianone onto them.
Alchohol is known to shrink the size of the glial brain in long-term drinkers. It also wipes out several nerve growth factors...
Perhaps an indication that alcohol is toxic to glial cells.
And high serotonin levels (from MDMA or other sources) can DAMAGE the SERT transporter...the glial mechanism designed to regulate the level of synaptic serotonin.
This combination of events doesn't sound good.
I have seen many studies showing alcohol does indeed increase the toxicity from MDMA.
Although the article you posted is uninteresting, a relationship between serotonin and alcohol cannot be dismissed.
It is hard to believe that SSRIs and moderate alcohol use can really result in Serotonin Syndrome...but who knows who MUCH alcohol these kids are drinking.
I, for one, was NEVER tempted to drink on nights when I rolled.
Maybe the next night...maybe.
I agree that alcohol must have a very MILD influence on serotonin, MOST of the time.
But if it diminishes the transporter's function...an indirect influence could contribute to the level of risk.