Originally Posted by whoMe
Interesting article, but I'm going to have to wait till morning to actually get anything from it...
It was just basically that theanine, an amino acid that is in green tea, resembles glutamate and glutamine. "Once ingested, theanine takes advantage of its resemblance to glutamine to hitch a ride on one of the body’s amino acid transporters, a sodium-dependent system that carries theanine across the intestine 9. A similar transporter ultimately carries theanine across the blood brain barrier as well 10. After getting into the central nervous system, theanine reverts back to its guise as a glutamate mimic and binds to a number of different types of glutamate receptor on nerve cells, albeit with considerably less affinity than glutamate itself 11."
It also says that although glutamte is important for normal brain functioning and long-term memory, too much glutamate can kill nerve cells, which is what happens in some neurological disorders like Alzheimer's. parkinson's, epilepsy.
But, it says, "The good news is that theanine appears capable of blocking cell death caused by kainic acid 13, a neurotoxin known to bind to a particular set of glutamate receptors, as well as by an excess of glutamate itself 14. Furthermore, theanine is effective at protecting nerve cells from injury caused by low levels of oxygen, a condition known as ischemia that is also characterized by excessive glutamate release 15. "
So anyway, I just thought that was interesting, given that this doctor tonight said that theanine and GABA worked in concert with each other, and then this link talked about how theanine resembles glutamate, and in your post you were talking about GABA and glutamate.