Path: g2news1.google.com!postnews.google.com!o13g2000cwo.googlegroups.com!not-for-mail
From: "JMW" <jmwilliams...@yahoo.com>
Newsgroups: misc.fitness.weights
Subject: Re: Is coffee bad?
Date: 15 Jul 2005 14:32:23 -0700
Organization: http://groups.google.com
Lines: 17
Message-ID: <1121463142.972507.214240@o13g2000cwo.googlegroups.com>
References: <db68ib$pj2$1@gist.usc.edu>
   <Omelet-E58999.12545914072005@corp.supernews.com>
   <42d6b9e4.3622801@netnews.worldnet.att.net>
   <1121375434.393063.232790@f14g2000cwb.googlegroups.com>
   <42d80ae1.11127166@netnews.worldnet.att.net>
NNTP-Posting-Host: 65.40.137.73
Mime-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
X-Trace: posting.google.com 1121463148 12779 127.0.0.1 (15 Jul 2005 21:32:28 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Fri, 15 Jul 2005 21:32:28 +0000 (UTC)
User-Agent: G2/0.2
Complaints-To: groups-abuse@google.com
Injection-Info: o13g2000cwo.googlegroups.com; posting-host=65.40.137.73;
   posting-account=M9dSEwwAAACjyHhWXsXb3jSxA00BiSWO



Axel of the North! wrote:
> "JMW" <jmwilliams...@yahoo.com> wrote:
>
> >Caffeine is not the primary stimulatory pathway in green tea.
>
> EGCG?

Yes, and to a lesser extent, some of the other catechins.  They act as
an alternative substrate for O-methylation through the COMT/SAMe
pathway, thus increasing plamsa catecholamine levels (dopamine,
norepinephrine, epinephrine), with the end result being similar in
effect to an MAO inhibitor, though not as powerful.  Also, SAH
(S-adenosyl-L-homocysteine from demethylated SAMe) acts as a feedback
inhibitor in this pathway, so the effect is self-limiting.