🧵"Psychoplastogens" = drugs that rapidly induce physical changes in the brain (neuroplasticity).
Examples: ketamine, psilocybin, LSD, DMT, MDMA.
Neuroscientists can literally watch new connections sprout overnight, as in the example below.
Movie:
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There are other plasticity-promoting psychoactive drugs, such as SSRIs, that are not psychoplastogens because they induce plasticity on a slower time scale (weeks).
Psychoplastogens can stimulate plasticity when exposed to neurons for <1 hour.
I first learned about this term from the work of @DEOlsonLab.
I discussed his research with him in a recent podcast conversation, including his work on #psychedelics like ibogaine.
Listen here:
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I have discussed other psychoplastogens, like #psilocybin, with neuroscientists like @kwanalexc.
In that conversation, Dr. Kwan shared some fascinating microscopy videos of neurons in mice.
Watch here:
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I also learned about ketamine, and how it compares to traditional depression medications like SSRIs, in a conversation with @LisaMonteggia:
Listen here:
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#ScienceBreakdown: A group of scientists (@DEOlsonLab) created an ibogaine analog lacking nasty properties of ibogaine but retaining desirable ones. It is also claimed to be non-hallucinogenic.
Ibogaine is an alkaloid found in iboga, a shrub from West Africa. It's a dissociative psychedelic and can induce intense hallucinations that last for many hours.
Prelim evidence suggests it may help treat addiction, but it can also have serious side-effects.
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You obviously don't want a drug to have severe side-effects, and ibogaine has some, including cardiotoxicity (heart damage).
There's also a push in the psychedelic drug space to develop psychedelic analogs that retain therapeutic properties but don't induce hallucinations.
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#ScienceBreakdown: Is DMT produced by the pineal gland in the mammalian brain?
I often see this claim on the internet and am surprised how often I'm asked about it. Below, a breakdown of a 2019 study in (mostly) rats looking at this.
For those that don't know, DMT is arguably the most powerful hallucinogen. It's typically smoked/vaporized. Subjective effects are intense but short-acting (minutes). The peak minutes produce a completely transformed experience, utterly alien compared to normal consciousness.
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First, some background on the science:
#DMT has been detected in mammalian tissues before. Usually this has been outside the brain, in very small amounts, making it questionable whether it's physiologically relevant or just a metabolic byproduct.
Acute Respiratory Distress Syndrome (ARDS) = deadly condition where lungs get super inflamed b/c immune system responds too strongly. This leads to lots of collateral damage to throughout the body.
Mortality rate in humans = 38.5%. No current drugs exist that help very much.
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ARDS can be induced by "super antigens," e.g. bacterial proteins like SEB that cause immune system to go haywire. If you expose mice to SEB, 100% die within ~one week.
Basic question: can death from ARDS be prevented by an immunosuppressive like THC?
Getting questions about recent @Forbes article. Article makes good points + gives good advice, but also makes erroneous claims based on misreading recent #cannabis research. Basic claims of article + breakdown of the new study in this thread. 1/
Many #cannabis consumers buy weed based on THC level, trying to get the most THC for their $. High THC weed sells faster. Article says that buying weed based just on THC is a bad idea. There's more to quality than just THC %. I agree with this, but the article goes further... 2/
The article is making the further claim that THC content is a poor indicator of #cannabis potency, and that weed with higher THC levels will *not* get you more high.
Wait? So if you consume flower with 18% THC, it will get you just as high as a concentrate with 80%?
1/n, Several people asked me about this headline, on a recent preprint claiming that #cannabis extracts high in #CBD have, "the potential of reducing [#coronavirus] infection by 70 to 80 percent.” Quite a claim. Let's briefly look at the study...
2/n, Remember, this a preprint, so hasn't been peer-reviewed and people are rushing to get #COVIDー19 related studies out ASAP. Let's briefly look at what they did and some results. Are the experiments/results compelling, or is this an absurd rush job (place your bets now!) ...
3/n, Basically, what they did was take cultures of human-derived cells (e.g. oral epithelial cells), put #cannabis extracts onto them, and ask if transcript (mRNA) or protein levels of ACE2 were impacted. ACE2 is an important protein #coronavirus uses to infect cells.