I haven't done any #PenAndInkPoison in a while - I've been busy - so here you go. Today we'll talk about a toxin with a significant history and mechanism of action, and also dabbles into conspiracy theories. I present to you T-2 MYCOTOXIN: OF FUNGAL TOXINS AND BEE POOP, a 🧵.
T-2 Mycotoxin is produced by species of the fungal genus Fusarium. They're essentially molds that grow in soils and affect plants. If you grow tomatoes that yellow, wither, and die in late summer, you've probably heard of "Fusarium wilt."
Back to T-2 Mycotoxin, it belongs to a class of chemical compounds called trichothecenes. One I've talked about before is VOMITOXIN, which affects wheat and can make you...vomit. T-2 Mycotoxin does the same.
If a Fusarium infects wheat, and contaminates it with T-2 Mycotoxin, if eaten the victim can have the trifecta of nausea, vomiting, and diarrhea, as well as hemorrhaging and leukopenia (low white blood cell count). This type of poisoning is called "alimentary toxic aleukia."
And T-2 Mycotoxin poisoning can be pretty serious. One mechanism of action is inhibition of DNA and RNA synthesis. This is due to its epoxide - the triangle with an "O" in one corner. Epoxides are notorious for messing with DNA, immune systems, and fast-growing cells.
In the 1940s there was a mass poisoning in Orenburg, USSR that killed 10% of the population - about 100,000(?), I don't quite recall. But it wasn't until the 70's that old, contaminated wheat, due to food scarcity from WWII, and newly discovered T-2 Mycotoxin, was the culprit.
Fast-forward to 1981 - The US accused USSR of supplying T-2 Mycotoxin to Vietnam in the 1970s to drop on fleeing refugees. The victims reported a sticky "yellow rain" that sickened people and possibly killed thousands. A chemical warfare accusation is pretty serious stuff, but...
...it wasn't T-2 Mycotoxin. It was bee poop. The yellow was just digested pollen. There was never any conclusive evidence of T-2 Mycotoxin in the "yellow rain," but if you took soil and plant samples, you could probably find it, because it's produced by molds that grow in soil.
The accusations weren't completely unfounded though. The US dumpled Agent Orange from the skies, so poison rain was a common and shameful occurrence, and if we were doing it, why wouldn't the Russians? Wasn't the Cold War awesome?
Back to T-2 Mycotoxin again, routes of exposure come from eating Fusarium contained grains, like what we saw in the USSR, but it can also be absorbed through the skin and inhaled. It's one reason why we're always warned not to touch or be around molds.
Inhaled, T-2 Mycotoxin is dangerous, especially with prolonged, chronic exposure. Deaths are not quick, nor pretty. With a suppressed immune system and bleeding, you'll probably die from an infection or your lungs filling with fluid.
So that's the chemistry, toxicology, and stories of T-2 MYCOTOXIN, a potent fungal toxin. And admire the pen, too, she's lovely😍
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A lesson in *reading the article* 🧵
I'm a simple person so funny titles amuse me:
"Blackout Brownie: A Final Dessert Case Study"
So I read the abstract and this jumped out at me "delta-9-THC present at >5,000 ng/mL in the decedent’s central blood." WHOA! academic.oup.com/jat/advance-ar…
Now, greater than 5,000 ng/mL is huge (for perspective, some states have per se driving limits of 5 ng/mL), so I'm sure this will garner attention from anti-cannabis folks. What will madden them is the case was signed out as a natural cause of death. This was the correct call.
When you read through the history of the case you wonder if she made some super-duper-special brownies, and then you see the results table. What gives? That's a huge disparity between central and peripheral blood. Huge. 5,070 vs 7.6.
Something different for Toxicology Thursday: OF PROHIBITION AND NICOTINE, a longish 🧵.
If you hang out here long enough you'll notice that people that deal with drugs, like forensic and clinical toxicologists, are generally opposed to the prohibition of drugs and substances.
Why is that? If something is deemed bad or unsafe, shouldn't getting rid of it, banning it entirely, solve the problem? In a word, no. Nature abhors a vacuum and will fill it, sometimes with something worse, whether we're talking about a drug, a gangster, or a politician.
The prime example was the prohibition of alcohol from 1920-1933. It was a social engineering attempt that turned into a mass poisoning. Deaths from bootleg alcohol containing methanol and worse flooded the U.S. For more, read @deborahblum's THE POISONERS HANDBOOK, it's excellent!
Ready for some #PenAndInkPoison?
For some reason, I like the poisons in our food. I should clarify: I like the poisons *nature* puts in our food. We all gotta eat, right?
So buckle up for a 🧵, for today I present you with something new: BONGKREKIC ACID
Have you ever had tempeh? It's an Indonesian food made from fermented soybeans. Tempeh is sold as a very firm cake and has a wonderful nutty, earthy flavor. It's common in vegetarian and vegan cooking. I like it a lot. [FoodCraftLab (CC BY-SA-2.0)]
So tempeh is a common, staple food, made from soybeans. On the island of Java, however, is a type of tempeh made from coconut called tempeh bongkrek. And it can be toxic. Toxic tempeh.
Yesterday I mentioned PRACTICAL MAGIC and one of my favorite poisoning tales, and it's been a few years and 5K followers since I last posted it, so I thought I'd re-up it. So settle in for a murder gone wrong and "Justin's Three Rules of Murder." A long 🧵.
I ❤️ Sandra Bullock. And I ❤️PRACTICAL MAGIC. It's a classic tale of "Girl meets boy, boy is an abusive serial killer who kidnaps the girl and her sister, sister poisons bad boy’s tequila with belladonna, bad boy dies. Throw in some magic for good measure." We’ve all been there.
Our tale starts with Heather and Kevin. They got married, bought a house, and had kids. Things were good until Kevin lost his job. To support them, Kevin worked two jobs, so he wasn't around much, and that caused stress and a lot of fighting.
For some #PenAndInkPoison today I want to talk about thebaine, mentioned briefly yesterday when discussing laudanosine and papaverine. Morphine gets all the glory as an opium poppy alkaloid, but I'd argue that thebaine is much, much more important.
Thebaine is not used therapeutically but is used commercially in the synthesis of some of the most important opioids we have on the market today. In anywhere from 2 to 8 steps you can produce all of the opioids shown below - there are more, but these are the important ones.
On the right, we have the opioid agonists oxycodone, oxymorphone, hydrocodone, and hydromorphone. Hydrocodone is the most frequently prescribed opioid analgesic (pain reliever) in the U.S. We all know about oxycodone (Oxycontin). And hydromorphone is used a ton in hospitals.
It's Thursday! I hate Thursdays, it's a cruel reminder that it's not yet Friday. To help us feel better, let's look at how the world of nature's poisons can intersect with postmortem forensic toxicology. I present to you LAUDANSOSINE and PAPAVERINE.
Laudanosine and papaverine are minor alkaloids found in the opium poppy (Papaver somniferum), but they don't get near the attention of the heavy-hitter opiate morphine, which is made (rather simply) into heroin. Other alkaloids found in opium poppy are codeine and thebaine.
Laudanosine sounds very similar to laudanum, the opium tincture that was common in the 1800s. It was ~10% opium alkaloids, and when drunk, had the same effects of opiates/opioids today, like euphoria, but also the same side effects, namely respiratory depression and dependence.