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- Newsgroups: alt.psychoactives
- From: jenkins@codon.nih.gov (George Vaughn)
- Subject: Re: Anandamine ???
- Message-ID: <jenkins-181094201128@128.231.99.71>
- Date: Wed, 19 Oct 1994 00:11:38 GMT
-
- In article <37438m$5g1@scapa.cs.ualberta.ca>, pjordan@cs.ualberta.ca (Peter
- Jordan) wrote:
-
- > FARM-PA@finou.oulu.fi (Pentti Arvela) writes:
- >
- > >Is it true that no one can tell me anything about the endogenous THC Anandamine
- > >??????
- >
- >
- > NO, but I'm busy right now .. wait a couple days and see!
-
- What exactly would you like to know? I have not read much of the
- scientific
- literature (it has only recently been discovered). I will try to read some
- of the relevant articles in the next few weeks and post a more
- comprehensive
- (and less scientifically worded) review. Until then, I hope this tides you
- over. I realize this abstract might only be useful for people who have
- studied
- pharmacology, but it was all I could do on short notice.
-
- George Vaughn
- ----------------------------------
-
-
- Devane WA; Axelrod J
- Enzymatic synthesis of anandamide, an endogenous ligand for the
- cannabinoid receptor, by brain membranes.
- Laboratory of Cell Biology, National Institute of Mental Health, Bethesda,
- MD 20892.
- Source: Proc Natl Acad Sci U S A 1994 Jul 5;91(14):6698-701
- Unique Identifier: 94294446
-
- Abstract:
-
- Anandamide, an endogenous eicosanoid derivative
- (arachidonoylethanolamide), binds to the cannabinoid receptor, a
- member of the G protein-coupled superfamily. It also inhibits
- both adenylate cyclase and N-type calcium channel opening. The
- enzymatic synthesis of anandamide in bovine brain tissue was
- examined by incubating brain membranes with [14C]ethanolamine and
- arachidonic acid. Following incubation and extraction into
- toluene, a radioactive product was identified which had the same
- Rf value as authentic anandamide in several thin-layer
- chromatographic systems. When structurally similar fatty acid
- substrates were compared, arachidonic acid exhibited the lowest
- EC50 and the highest activity for enzymatic formation of the
- corresponding ethanolamides. The concentration-response curve of
- arachidonic acid exhibited a steep slope, and at higher
- concentrations arachidonate inhibited enzymatic activity. When
- brain homogenates were separated into subcellular fractions by
- sucrose density gradient centrifugation, anandamide synthase
- activity was highest in fractions enriched in synaptic vesicles,
- myelin, and microsomal and synaptosomal membranes. When several
- areas of brain were examined, anandamide synthase activity was
- found to be highest in the hippocampus, followed by the thalamus,
- cortex, and striatum, and lowest in the cerebellum, pons, and
- medulla. The ability of brain tissue to enzymatically synthesize
- anandamide and the existence of specific receptors for this
- eicosanoid suggest the presence of anandamide-containing
- (anandaergic) neurons.
-
-
-