Mark Nelson

20 posts

Mark Nelson

Mark Nelson

@NelsonMLchemist

Organic medicinal Tetracycline chemist inventor Nuzyra a FDA drug plus other Tcs- collecting molecules and data all over the world - 2019 ACS Hero of Chemistry.

Park City, UT Se unió Temmuz 2023
267 Siguiendo58 Seguidores
Mark Nelson
Mark Nelson@NelsonMLchemist·
@NaOHBartfield If it’s like the Science I run into it’s probably both- Chlorine? Class? Anyone?
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@NaOHBartfield A good spectroscopist could tell us what elements and perhaps molecules are involved- class? Anyone?
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@drugmonkeyblog If you create a drug in a University setting, they take 60% of the royalty stream don’t forget regardless if NIH funded. Can you say Administrative Bloat?
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Drug Monkey
Drug Monkey@drugmonkeyblog·
I suspect people in science are also about to find out about the F&A costs of research being amortized across the recipient institution vs being charged to directs. The classic example is “but I have one office so IDC should be reduced for my second and third grants!”.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@MiraCB007 @MitoPsychoBio Un pasteurized milk or follow the procedure in us patent 8431174 and pull the globs out of whey using diafiltration or chitosan- or just drink whey
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Mira CB
Mira CB@MiraCB007·
@MitoPsychoBio Young humans need fat comparable to mothers milk. All baby yogurts and fromage frais are (should be) whole milk. I wish there are options with non-homogenized milk, in order to deliver milk fat globule phospholipids, to feed developing gut microbiome.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@brunogomezgil @baym Did they not find resistant E. coli in 250k year old ice cores? I referenced this paper- be back - I was a resistance fighter last wave- we just made new antibiotics
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Bruno Gómez-Gil (un microbiano)
Bruno Gómez-Gil (un microbiano)@brunogomezgil·
@baym Antibiotics and antibiotic resistance is a chemical warfare between microorganisms and has been going on for millions of years in the environment. I guess this study is only with clinical isolates.
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Michael Baym
Michael Baym@baym·
This paper has been a long time coming: We looked at the genomes of historical bacterial samples over a century to look for trends of antibiotic resistance genes, finding multiple instances of them in infections before the age of antibiotics...
Michael Baym tweet media
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That Chemist
That Chemist@That_Chemist·
You often see BBr3 used to cleave aryl methyl ethers, but you may not know that it can also react with C-F bonds as well!
That Chemist tweet media
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@drtimothyli Nuzyra as the best Tetracycline for Gram - should have been in the panel. And it’s orally active not like Tygacil.
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Timothy Li
Timothy Li@drtimothyli·
One of the biggest reasons why we need antibiotic stewardship is to avoid creating scary monsters like this⬇️ How are you going to treat this?
Timothy Li tweet media
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@MitoPsychoBio During OxPhos calcium goes haywire. The tetracyclines induce mitohormesis AND stop calcium induced dysfunction. This family regulates and controls inflammation while no other family compares.
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Martin Picard
Martin Picard@MitoPsychoBio·
How much energy do cells and organisms with impaired mitochondrial OxPhos waste in mounting (futile) stress responses? Could hypermetabolism - rather than ATP deficiency - cause symptoms and disability in mitochondrial diseases? nature.com/articles/s4225…
Martin Picard tweet media
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@chemiolis It's used all the time in inorganic chem and Li battery research.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@sweatystartup Plus the controllers they hold leach plastic endocrine disruptors changing their hormones - biosocial engineering
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Nick Huber
Nick Huber@sweatystartup·
All my dad friends with 10-18 year old sons can’t get them to do anything with them. Want to go camping? Nope. Want to go on a hike? Nope. Want to ride bikes? Nope. Want a girlfriend? Nope. Want to get your license? Nope. They’re all addicted to video games.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
abstractsonline.com/pp8/#!/10892/p… We will be presenting at the Society for Neuroscience meeting coming up in DC. Non- antibiotic Tetracyclines modulate Alzheimer’s by Mitochondrial mechanisms- Science didn’t see this coming! Mitochondria are bacteria too!
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@BStevensonLab Hi Brian- tried to call you. You keep hanging up - probably think I’m a spam call- wanted to talk about my unique collection of Tetracyclines and how to discover better ones- no problem though. Thanks
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Matt Kaeberlein
Matt Kaeberlein@mkaeberlein·
AI for longevity is only as powerful as the training data. A recent AI/ML study used 80 "senolytics" of which only a few are specific/potent. Not a good training set. Imagine if we had 1000s of validated, large effect size longevity interventions... pubmed.ncbi.nlm.nih.gov/37432607/
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@philipcball Not showing chemical structures is where biology stops and medicinal chemistry begins. Had a discussion- let’s just string heteros together- start a company- we all laughed then didn’t.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@BStevensonLab @ItaiYanai Microbiology doesn’t follow week-like rules. Everyday is Monday when running experiments and everyday is Saturday - in my experience
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Brian Stevenson Spirochete Lab
Brian Stevenson Spirochete Lab@BStevensonLab·
@ItaiYanai I advise my mentees that they can work whatever days and times fit best. Want to work on Sunday when parking is easy and equipment is free? Okay! Want to take Tuesday & Wednesday off, when nobody else is at the beach? Okay! Do your work in a way that makes you happiest.
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Itai Yanai
Itai Yanai@ItaiYanai·
What does a mentor advise a mentee to do on the weekends? I encourage my lab members to rest but it’s a bit hypocritical because when I was at their stage I worked on the days off (and still do, kind of..). Maybe the best thing is to just make sure there's no expectation to work.
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@BStevensonLab @WilsonLab2 E Coli was used. Great paper. Showed binding of the Tet we invented Nuzyra. Still room for better ones I see!
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Brian Stevenson Spirochete Lab
Brian Stevenson Spirochete Lab@BStevensonLab·
@WilsonLab2 Perhaps you can provide additional information to those of us who don’t have immediate access to the full article? The abstract says you mapped interactions between antibiotics and “the bacterial ribosome”. Which species of bacteria? Ribosomes are not identical across Eubacteria
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@billthechemist Hi Bill the Chemist- get to booth 445 and meet our team at CPLab Chemicals and Lab Safety- have a periodic table bag for u and others- go Owls! Glad to see you in Chemistry!
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Bill Motsch PhD
Bill Motsch PhD@billthechemist·
GRS reunion in San Francisco
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Mark Nelson
Mark Nelson@NelsonMLchemist·
@drtimothyli Forms quinones on the D ring and condenses too. Good for short term only use.
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Timothy Li
Timothy Li@drtimothyli·
Minocycline causes hyperpigmentation much more than other tetracyclines Why? ⭐It forms insoluble complexes with iron which causes pigmentation (other tetracyclines tend to chelate calcium) ⭐⬆️lipophilic and ⬆️penetration into different tissues ⭐It turns black when oxidized
Timothy Li tweet media
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