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another weapon in our arsenal
How CANNABIS can treat cancer: Study finds compound in the plant can help shrink aggressive brain tumours
  • Treatment uses active chemical components of the plant - cannabinoids
  • These were combined with radiation when treating brain cancer patients
  • Mice given the treatment saw tumours shrink in size dramatically
  • In some, they virtually disappeared, hailed as 'extremely exciting'
By Wai Liu For The Conversation
Published: 08:41 EST, 17 November 2014 | Updated: 14:55 EST, 17 November 2014





Chemical components of the cannabis plant, known as cannabinoids, had a dramatic effect on tumours
Cannabis can have a dramatic effect on aggressive forms of brain cancer, a new study shows.
The new research, conducted by specialists at St George's, University of London, studied the treatment of brain tumours in the laboratory.
It found the most effective treatment was to combine active chemical components of the cannabis plant, which are known as cannabinoids.
Two of these - called tetrahydrocannabinol (THC) and cannabidiol (CBD) - were tested as part of the research into brain cancer.
This is particularly difficult to treat and claims the lives of about 5,200 patients each year.
It also has a particularly poor prognosis as the rate of survival after five years of patients' diagnosis is around 10 per cent,
The new research is the first to show a drastic effect when combining THC and CBD with radiation.
Dr Wai Liu, Senior Research Fellow and lead researcher on the project, said: 'The results are extremely exciting.
'The tumours were treated in a variety of ways - either with no treatment, the cannabinoids alone, and radiation alone.
'Or, with both the cannabinoids and radiation at the same time.
'Those treated with both radiation and the cannabinoids saw the most beneficial results and a drastic reduction in size.
In some cases, the tumours effectively disappeared in the animals.
'The benefits of the cannabis plant elements were known before.
'But the drastic reduction of brain cancers - if used with radiation - is something new and may well prove promising for patients who are in gravely serious situations with such cancers in the future.'
Here, writing in The Conversation, Dr Lui describes his work in detail...
Widely proscribed around the world for its recreational uses, cannabis is being used in a number of different therapeutic ways to bring relief for severe medical conditions.
Products using cannabinoids, the active components of the cannabis plant, have been licensed for medical use.
Sativex, for example, which contains an equal mixture of the cannabinoids tetrahydrocannabinol (THC) and cannabidiol (CBD), is already licenced as a mouth spray for multiple sclerosis.
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In the US, dronabinol and nabilone are commercially available for treating cancer-related side effects.
Now, in a study published in the journal Molecular Cancer Therapeutics, we’ve also shown that cannabinoids could play a role in treating one of the most aggressive cancers in adults.
There are more than 85 cannabinoids, which are known to bind to unique receptors in cells and which receive outside chemical signals.
These receptors feed into signalling pathways, telling cells what to do. Recent studies have shown that some cannabinoids have potent anti-cancer action.

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Products using cannabinoids, the active components of the cannabis plant, have been licensed for medical use - such as Sativex mouth spray for multiple sclerosis
For example, both THC and CBD have been shown in a number of laboratory studies to effectively induce cell death in tumour cells by modifying the faulty signalling pathways inside these cells.
Depending on the cell type this can disrupt tumour growth or start to kill it.
The psychoactivity associated with some cannabinoids, principally THC (which gives people a cannabis high), is also mediated via the same receptors.
Because these receptors are found in the highest abundances in brain cells, it follows that brain tumours also rich in these receptors may respond best to cannabinoids.
We wanted to investigate the anti-cancer effects of Sativex in glioma cells.
High-grade glioma is an aggressive cancer, with very low long-term survival rates. Statistics show that just over a third (36 per cent) of adult patients in the UK with glioma live for at least a year, while the five-year survival rate is 10 per cent
CANNABIS AND CANCER: AN EXPERT'S VIEW
Dr Kat Arney, Cancer Research UK’s science communications manager, told MailOnline: 'We know that cannabinoids – the active chemicals found in cannabis – can have a range of different effects on cancer cells grown in the lab and animal tumours.
'But at the moment there isn’t good evidence from clinical trials to prove that they can safely and effectively treat cancer in patients.
'Despite this, we are aware that some cancer patients do choose to treat themselves with cannabis extracts.
'These stories can help researchers build a picture of whether these treatments are helping or not, although this is weak evidence compared to properly-run clinical trials.
'Cancer Research UK is supporting clinical trials for treating cancer with cannabis extract and a synthetic cannabinoid In order to gather solid data on how best these drugs can be used to benefit people with cancer.'
Depending on the individual, treatment can consist of surgery, radiotherapy, and/or chemotherapy with the drug temozolomide.
However, due primarily to the intricate localisation of the tumour in the brain and its invasive behaviour, these treatments remain largely unsuccessful.
However, as our study showed, combining radiotherapy with cannabinoid treatment had a big effect.
FINDING THE RIGHT DOSE
We first had to perform lab tests on cells to optimise the doses of the cannabinoids, and showed that CBD and THC combined favourably.
We found that to achieve a 50% kill rate of glioma cells, a dose of 14mM (millimolar – a measure of amount-of-substance concentration) of CBD or 19mM of THC would be needed if each was used singularly.
However, when used in combination, the concentrations required to achieve the same magnitude of cell kill is significantly reduced to just 7mM for each.
This apparent reduction in the doses of the cannabinoids, in particular THC, without a loss of overall anti-cancer action is particularly attractive as unwanted side effects are also reduced.
Once we had these results, we then tested the impact of combining the cannabinoids with radiation in mice with glioma.
The efficacy of this treatment was tracked using sophisticated MRI technology – and we determined the effects on tumour growth of either CBD and THC together, radiation, or the combination of both.
The drugs were used at suboptimal doses to allow us to see if there was any improvement in the therapy from combining them.

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The researchers, who saw some tumours effectively disappear, hailed the results as 'extremely exciting'
BALANCING ANTI-CANCER WITH PSYCHOACTIVE
In principle, patients treated with THC could experience some psychoactive activity.
But the secret to successfully exploiting cannabinoids as a treatment for cancer is to balance the desired anti-cancer effects with the less desirable psychoactive effects.
This is possible, as some cannabinoids seem to function independently of the receptors and so do not engage the adverse effects. CBD is one such cannabinoid.
The doses of THC we selected were below the psychoactive level, but together with CBD it partnered well to give the best overall anti-cancer effect.
Our results showed that the dose of radiation we used had no dramatic effect on tumour growth, whereas CBD and THC administered together marginally reduced tumour progression.
However, combining the cannabinoids with radiation further impeded the rate at which tumour growth progressed and was virtually stagnant throughout the course of the treatment.
Correspondingly, tumour sizes on the final day of the study were significantly smaller in these subjects compared with any of the others.
The results are promising. There may be other applications but for now it could provide a way of breaking through glioma and saving more lives.


:peace:
cof
 

AlphaPhase

Well-Known Member
Looking good giggles, those are growing fast! props

That sucks hydrogp, I hope you can get enough to make the 90 day use of it, it does take a lot of herb, i've heard a pound or so per treatment, hopefully you can make a batch that lasts until you can make some more, good vibes to you-

Sweet plant and airplane dez! I've always wanted an RC plane, i used to love playing with the gas powered RC cars, so much fun, here's a cool video of some fast bikes!

 

jimmer6577

Well-Known Member
After putting together a danish "userguide" for the rso 90 day 60g cancer cure to my stepdad i realize i need alot more material. Dont know what i was thinking but at 1 gram a day ill only have 3 tops 4 weeks. Pretty bummed about it. Damn i really should have ran some clones. Well i just took a clone while its on the 4-5thweek of flowering. Hope it turns out and maybe i can be able to 12/12 take new clones and then keep up. But argh i just popped 5x Blueberry autos and 3fem dog 2 reg. For a auto run with long veg times for momma dogs :/ Well ill figure it out..

Shocking when i told my gf i had to run more for my stepdad she wanted me to ask for money for the electricity being used. I was stunned said nothing.. Its sad thinking i never should have turned left back in the day. Makes me feel like the biggest looser. Argh bit soon for a mid life crisis ey? Then again with my health history i never planned on reaching 60.. Sry guys.. Just one of those days..
Was this the one! He was gone for a day, so I figured he found his own way there.lol001.JPG
 

Enwhysea

Well-Known Member
@Figgy I thought i was first to invade you rui and @AlphaPhase when will I know it's time for them to go to 5 gallon pots. I guess I'll have to go get some you guys have any ideas on what I should pick up I'm only gonnanrun two dirt plants and one hydro this go around
 

AlphaPhase

Well-Known Member
Nice jimmer!

Nyc, my rule of thumb is about 8-10" tall per gallon and then it's time for a repot, but some roots grow faster then others, it doesn't hurt to repot before they are root bound to avoid any stunted growth. My plants start to droop if i wait too long because the roots get thick on the bottom of the pot and when i water it kind of tends to lead to over watering symptoms
 
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