Re: Cannabis compound slows lung cancer in miceSmoking:
I previously mentioned that report from the A Thoracic society. In fact if
smoking marijuana was a major or even minor cause of respiratory pathologies
it should be all over the literature by now. Given our current understanding
it is reasonable to assume that cannabinoids have anti cancer properties and
so may confer some protection from cig smoking; especially given the potent
antioxidant and anti inflammatory functions of cannabinoids; both of which
are known to help prevent cancers. There might be some small protection. Put
it this way: if you smoke cigarettes smoking cannabis is probably better cig
smoking alone.
A recent report from the American
"Mark Whiteley" <mark.whiteley53@ntlworld . com > wrote in message
news:l96Wh.18501$N94.7941@newsfe4-gui.ntli . net ...
>
> "John H." <bingblat@goaway . com .au> wrote in message
> news:4628b034@quokka.wn . com .au...
> > Hey Mark,
> >
> > I wasn't specifically commenting on your post. Lately I've been going
> > through the primary literature to investigate the therapeutic potential
of
> > cannabinoids. The studies I mentioned have little if anything to do with
> > how
> > people feel, the vast majority relate to cellular and clinical based
> > studies
> > where biological markers are utilised to measure effect
>
>
> Thats a great point! cannabis is curing not just masking then...
>
>
> . On the basis of the
> > current research there is no other plant that offers so much therapeutic
> > potential. However, smoking is bad. Need vaporisers.
>
> Smoking is not good for you agreed, would it be possible for THC to
actually
> block the harmful effects of smoking, assuming you already smoked cigs??
>
> you list some really bad conditions below, i'm glad cannabis is beging to
be
> proven to help.. . it may well make people reassess their feeling about the
> plant, it hard to hate the plant that provides a potential cure for so
many
> of societies worst illnesses...
>
> > I was very surprised at the wide range of possible uses but this one
> > really
> > takes the cake(THC better than current drugs):
> > 6/03/2007 11:34PM
> >
> >
> > Mol. Pharmaceutics, 3 (6), 773 -777, 2006. 10.1021/mp060066m
> > S1543-8384(06)00066-9
> >
> > Web Release Date: August 9, 2006
> >
> > Copyright © 2006 American Chemical Society
> >
> > A Molecular Link between the Active Component of Marijuana and
Alzheimer's
> > Disease Pathology
> >
> > Lisa M. Eubanks, Claude J. Rogers, Albert E. Beuscher IV, George F.
Koob,
> > Arthur J. Olson, Tobin J. Dickerson, and Kim D. Janda*
> >
> > Departments of Chemistry, Immunology, and Molecular Biology, Molecular
and
> > Integrated Neurosciences Department, The Skaggs Institute for Chemical
> > Biology, and Worm Institute for Research and Medicine, The Scripps
> > Research
> > Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
> >
> > Received June 11, 2006
> >
> > Abstract:
> >
> > Alzheimer's disease is the leading cause of dementia among the elderly,
> > and
> > with the ever-increasing size of this population, cases of Alzheimer's
> > disease are expected to triple over the next 50 years. Consequently, the
> > development of treatments that slow or halt the disease progression have
> > become imperative to both improve the quality of life for patients and
> > reduce the health care costs attributable to Alzheimer's disease. Here,
we
> > demonstrate that the active component of marijuana,
9-tetrahydrocannabinol
> > (THC), competitively inhibits the enzyme acetylcholinesterase (AChE) as
> > well
> > as prevents AChE-induced amyloid -peptide (A) aggregation, the key
> > pathological marker of Alzheimer's disease. Computational modeling of
the
> > THC-AChE interaction revealed that THC binds in the peripheral anionic
> > site
> > of AChE, the critical region involved in amyloidgenesis. Compared to
> > currently approved drugs prescribed for the treatment of Alzheimer's
> > disease, THC is a considerably superior inhibitor of A aggregation, and
> > this
> > study provides a previously unrecognized molecular mechanism through
which
> > cannabinoid molecules may directly impact the progression of this
> > debilitating disease.
> >
> > Keywords: Cannabinoids; Alzheimer's disease; acetylcholinesterase
> >
> >
> >
> > And this one from a while back:
> >
> > Article:
> > Cannabidiol and (2)D 9 -tetrahydrocannabinol are
> > neuroprotective antioxidants
> > Authors: A. J. HAMPSON* ? ,M.GRIMALDI ? ,J.AXELROD*, AND D. WINK §
> > Journal:
> > Proc. Natl. Acad. Sci. USA
> > Vol. 95, pp. 8268-8273, July 1998
> > Medical Sciences
> > Location:
> > n\ni
> > Cannabidiol and ()9-tetrahydrocannabinol are neuroprotective
antioxidants
> > Date obtained: 17/02/2000
> > Web Page:
> > Date Read: 19/02/2000
> > Date to Review: 31/12/2000
> > Keywords:
> > Printed:
> > Notes:
> > ABSTRACT
> >
> > The neuroprotective actions of cannabidiol and other cannabinoids were
> > examined in rat cortical neuron cultures exposed to toxic levels of the
> > excitatory neurotrans-mitter glutamate. Glutamate toxicity was reduced
by
> > both cannabidiol, a nonpsychoactive constituent of marijuana, and the
> > psychotropic cannabinoid (2)D 9 -tetrahydrocannabinol (THC).
Cannabinoids
> > protected equally well against neuro-toxicity mediated by
> > N-methyl-D-aspartate receptors, 2-ami-no-
> > 3-(4-butyl-3-hydroxyisoxazol-5-yl)propionic acid recep-tors, or kainate
> > receptors. N-methyl-D-aspartate receptor-induced toxicity has been shown
> > to
> > be calcium dependent; this study demonstrates that
> > 2-amino-3-(4-butyl-3-hydroxyisox-azol- 5-yl)propionic acidykainate
> > receptor-type neurotoxicity is also calcium-dependent, partly mediated
by
> > voltage sensi-tive calcium channels. The neuroprotection observed with
> > cannabidiol and THC was unaffected by cannabinoid receptor antagonist,
> > indicating it to be cannabinoid receptor indepen-dent. Previous studies
> > have
> > shown that glutamate toxicity may be prevented by antioxidants.
> > Cannabidiol,
> > THC and several synthetic cannabinoids all were demonstrated to be
> > antioxi-dants by cyclic voltametry. Cannabidiol and THC also were shown
to
> > prevent hydroperoxide-induced oxidative damage as well as or better than
> > other antioxidants in a chemical (Fenton reaction) system and neuronal
> > cultures. Cannabidiol was more protective against glutamate
neurotoxicity
> > than either ascorbate or a-tocopherol, indicating it to be a potent
> > anti-oxidant. These data also suggest that the naturally occurring,
> > nonpsychotropic cannabinoid, cannabidiol, may be a poten-tially useful
> > therapeutic agent for the treatment of oxidative neurological disorders
> > such
> > as cerebral ischemia.
> >
> > Extracts
> >
> > These results suggest that cannabidiol protects simi-shown). These
results
> > suggest that cannabidiol protects simi-larly, regardless of whether
> > toxicity
> > is mediated by NMDA,AMPA, or kainate receptors.
> > AMPAyKainate Toxicity Is Calcium Dependent.
> >
> > Increasedcalcium influx is known to be a key factor in NMDAr-induced
cell
> > death (4), but its role in AMPA and kainate toxicity is less clear. It
has
> > been suggested that AMPAykainate receptors may not directly allow entry
of
> > sufficient calcium to kill cells. However, AMPAykainate receptors f lux
> > large amounts of sodium, which can depolarize cell membranes. Such
> > depolar-ization may activate both voltage-sensitive calcium channels
(21)
> > and facilitate NMDAr activation (22, 23). In this way, AMPAykainate
> > receptor
> > stimulation may lead indirectly to accumulation of toxic intracellular
> > calcium levels.
> > --
> > cannabinoid HU-211 all donated electrons at a similar poten-tial as the
> > antioxidant BHT. Anandamide (arachidonyl-ethanolamide), which is not a
> > cannabinoid in structure but is an endogenous ligand for the cannabinoid
> > receptor, did not undergo oxidation in this assay (Fig. 4A). Three other
> > canna-binoids, cannabinol, nabilone, and levanantrodol, also were
tested,
> > and they, too, exhibited oxidation profiles similar to cannabidiol and
THC
> > (data not shown).
> > The ability of cannabinoids to be oxidized readily suggests that they
may
> > possess antioxidant properties comparable to BHT
> > --
> > unaffected by cannabinoid receptor antagonist. This suggests that
> > cannabinoids may have potentially useful therapeutic effects that are
> > independent of psychoactivity-inducing can-nabinoid receptors (12) and
so
> > are not necessarily accompa-nied by psychotropic side effects.
> > -
> > Cannabidiol blocked glutamate toxicity in cortical neurons with equal
> > potency regardless of whether the insult was mediated by NMDAr, AMPA
> > receptors, or kainate receptors. This suggests that either cannabinoids
> > antagonize all three glutamate receptors with the same affinity, or,
more
> > likely, their site of action is downstream of initial receptor
activation
> > --
> > Neurotoxic concentrations of glutamate induce mas-sive calcium influx
> > through NMDAr (4) that ultimately kills the cell. This study has
> > demonstrated that the toxic effects of glutamate are also
> > calcium-dependent
> > when mediated by AMPAykainate receptors. Both EDTA (a calcium chelator)
> > and
> > voltage-sensitive calcium channel inhibitors reduced in-dicate that many
> > cannabinoids exert a considerable protective antioxidant effect in
> > neuronal
> > cultures. The similarity of the voltamagrams observed with cannabidiol,
> > HU-211, and several other cannabinoids also suggests that the reported
> > antioxidant effect of HU-211 is not a feature unique to this atypical
> > cannabinoid, (as previously implied; e.g., ref. 11) but, rather, a
common
> > property of classical cannabinoid structures. The potency of cannabidiol
> > as
> > an antioxidant was examined by comparing it on an equimolar basis with
> > other
> > commonly used antioxidants. Cannabidiol protected neurons to a greater
> > degree than either of the dietary antioxidants, a-tocopherol or
ascorbate.
> > As in the Fenton reaction system, cannabidiol protected neurons with
> > comparable efficacy to the potent antioxidant BHT. The similar
antioxidant
> > abilities of canna-bidiol and BHT in this chemical system and their
> > comparable protection in neuronal cultures implies that cannabidiol
> > neu-roprotection is caused by an antioxidant effect.
> > The antioxidative properties of cannabinoids suggest a therapeutic use
as
> > neuroprotective agents, and the particular properties of cannabidiol
make
> > it
> > a good candidate for such development. Although cannabidiol was similar
in
> > neuropro-tective capacity to BHT, cannabidiol has no known
tumor-promoting
> > effects [unlike BHT (25, 26)]. The lack of psycho-activity
> > --
> > Furthermore, the ability of can-nabidiol to protect against neuronal
> > injury
> > without inhibiting NMDAr may reduce the occurrence of toxicity or side
> > effects associated with NMDAr antagonists (27). Previous studies have
> > indicated that cannabidiol is not toxic, even when chron-ically
> > administered
> > to humans (28) or given in large acute doses [700 mgyday (29)]. In vivo
> > studies to examine the efficacy of cannabidiol as a treatment for
> > experimentally induced isch-emic stroke are currently in progress.
> > Project:
> >
> >
> >
> >
> >
> >
> > "Mark Whiteley" <mark.whiteley53@ntlworld . com > wrote in message
> > news:FM0Wh.4452$kb4.566@newsfe1-win.ntli . net ...
> >>
> >> >>
> >> >> >
> >> >>
> >> >> I found out that it can even bring back the "dead" (grin)
> >> >>
> >> >> there does seem to be regular studies which suggest it could be
> >> >> helpful
> >> >> in
> >> > a
> >> >> few circumstances eg.Cancer, pain, depression and aniexty...
> >> >>
> >> >> lets hope it really could be used as a basis for a cure for cancer,
> >> >> might
> >> >> reduce the nonsense notion's of "evil" that prohibitionist hold..
and
> >> >> finally gain acceptance.
> >>
> >> "John H." <bingblat@goaway . com .au> wrote in message
> >> news:46283e76@quokka.wn . com .au...
> >> > Actually Mark I did a quick check of the primary literature and there
> > are
> >> > at
> >> > least 15 conditions, including dementia, atherosclerosis, and
diabetes,
> > in
> >> > which cannabinoid based interventions offer potential. In regard to
> >> > this
> >> > news item it is consistent with a study released by the American
> > Thoracic
> >> > Society sometime ago wherein they found no evidence of increased
rates
> > of
> >> > lung, head, or neck cancer in pot smokers and they reasoned it is
> > because
> >> > of THC impact on cell cycle dynamics. THC and other cannabinoids are
> > known
> >> > to inhibit VEGF, which stimulates new blood vessel growth.
> >> > "Mark Whiteley" <mark.whiteley53@ntlworld . com > wrote in message
> >>
> >> (I reordered the above, i was told earlier that post should be posted
> > after
> >> the original otherwise it "troll like" behaviour. Don't get me wrong i
> > don't
> >> mind but i guess we should try and follow neticate where possible..I'm
> > sure
> >> i've broken loads of rules without realising).
> >>
> >> I was being a little sarcastic(i believe in it's theroputic nature), I
> > know
> >> there are lots of medical conditions cannabis can help with.. I guess i
> >> should have deatailed more...thanks for pointing this out though...I
> >> think
> >> most people who've read my previous mails, over the last couple of
> >> months,
> >> to this group will know i'm a fan, but I only know what i have read(I'm
> >> no
> >> expert). I try to research at sites that have some credability but i
can
> >> only go on their data..
> >>
> >> However I would suggest that cannabis makes you "feel good" and would
> > reduce
> >> how much people notice their illness's, people may think it helps and
it
> >> does but it isn't making them "better" more masking their
illness..other
> >> drugs would do the same job due to their "painkiller" nature...I could
be
> >> wrong(if i am i'm sure you'll tell me and explain why?), and to be
fair,
> > it
> >> dosn't matter to me as the end result is the person feels "better". I
> >> just
> >> like to cover all the bases..
> >>
> >> Here's one website which details quite a few illness which cannabis is
> >> reported to help..
> >>
> >> * w w w .pacifier . com /~alive/index_se_cmu.htm
> >>
> >> I just think we need to be careful about syaing that cannabis is a
> >> "medicinal wonder", it's still early days with regards to reaserch. The
> >> "prohibition" people would move quickly to turn that aginst us in the
> > event
> >> cannabis is proven not to help.. . it may harm further, the drugs
> > reputation..
> >>
> >>
> >
> >
>
>