Share this page!

Enter URL or ID to Unroll

You can paste full URL like: https://x.com/threadreaderapp/status/1644127596119195649
or just the ID like: 1644127596119195649

How to get URL link on X (Twitter) App

  1. On the Twitter thread, click on or icon on the bottom
  2. Click again on or Share Via icon
  3. Click on Copy Link to Tweet
  4. Paste it above and click "Unroll Thread"!
  5. More info at Twitter Help
Charles Brenner, PhD Profile picture
@CharlesMBrenner
Jul 6, 2019 • 3 tweets • 1 min read • Read on X
Today's mailbag had this FAQ: I know that NAD is required to make ATP but is ATP also required to make NAD? Yes, in fact the bioenergetic demands of restoring NAD from different precursors differ. Trp to NAD costs the most ATP followed by NA and NAM. NR costs the least... /1
because the cell doesn't have to run the PPP to make the ribose & the ribose is already linked to the nicotinamide moiety. The failing heart & other tissues under metabolic stress activate AMP kinase to turn the NRK genes ON when NAD and ATP are down precisely for this reason /2
Rodents fed NR who are put under these conditions of metabolic stress are highly protected. That's the basic logic of oral NR: boost your resiliency, repair better & resist the challenges that come your way. #agebetter

• • •

Missing some Tweet in this thread? You can try to force a refresh
　

Keep Current with Charles Brenner, PhD

Charles Brenner, PhD Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @CharlesMBrenner

Charles Brenner, PhD Profile picture
Jul 12, 2023
today @davidasinclair is telling the world that he has achieved age reversal with chemical cocktails

he submitted the paper on June 30 & it was accepted on July 4 by a journal of which he is coeditor-in-chief

paper was sent to me 3 days ago by a reporter for comment
reporter was told it is a "groundbreaking study" & "the first chemical approach to reprogram cells to a younger state"
reason WSJ didn't cover that paper is that ppl have been reporting chemical compounds that drive conversion of cells to induced pluripotency for the last 10-15 years

all of the compounds in today's paper were previously reported by others, mostly in 2013
Read 10 tweets
Charles Brenner, PhD Profile picture
May 11, 2023
a lesson about selected traits & how to tell if someone is BSing about aging

look in the animal word, especially wild animals:

animals are clever, terrific at finding food, protecting themselves & their babies

they use strength, appearance & guile to mate

1000s of genes
are required for these abilities & they are selected:

animals w good brains & musculature have babies w good brains & musculature

animals that can't see or smell predators don't survive & therefore contribute little to the gene pool

that's how selection works

dobzhansky said
"nothing in biology makes sense except in light of evolution"

this is your strongest protector against BS

now let's switch to yeast

if you want to look at aging there are two ways to study it:

you can either keep cells in a very old test tube & see how long they survive
Read 10 tweets
Charles Brenner, PhD Profile picture
Jan 12, 2023
there's a peer review failure today doi.org/10.1016/j.cell… in which an individual with 59 collaborators claims to have tested the information theory of aging

he did not test the information theory of aging
the claim is that he induced dsDNA breaks that are easily repaired, don't cause a DNA damage response or mutagenesis or cell death--only an epigenetic change

he knows this is not true because his co-first author & he published this paper in dec '21

ncbi.nlm.nih.gov/pubmed/34932948
the exact treatment causes a p53-dependent damage response, differentiation & cell elimination

far from a purely epigenetic mechanism, he's aged the cells bc he damaged their DNA & a bunch of cells differentiated & died in the process
Read 4 tweets
Charles Brenner, PhD Profile picture
Dec 11, 2022
hi all

there are a few issues being addressed here. let’s start w safety

human placebo controlled trials have never shown adverse events attributable to Niagen. note that LDL-C is raised in humans w Basis & pterostilbene alone
the class of compounds to which NR belongs is vitamin B3

there are decades of human data on these molecules showing human safety. niacin is unique in causing flushing but nicotinamide was tested in large Australian skin cancer and was shown to be cancer-preventative in ppl
there’s a hierarchy of evidence w human RCTs (and meta-analysis of RCTs) on the top. human case reports & good quality rodent studies are lower. cell studies are lower. poorly conducted rodent and/or poorly conducted cell studies are garbage in/garbage out
Read 13 tweets
Charles Brenner, PhD Profile picture
Nov 17, 2022
with ppl's heightened awareness of NAD, it's important to reset expectations on aging and what the use cases are for compounds like NR

aging is not optional

if you are reading this, you are aging

you can age poorly or you can age better but you are going to age
human aging is remarkably different from yeast, worm, fly & mouse aging

it is not true that dominant longevity genes found in yeast promote longevity in ppl

while it is true that there are worm & mouse mutants that are extremely long lived, they are sterile dwarves
CRISPR doesn't enable human lifespan extension bc there's no known gene you'd want more copies of to extend your life

there are no activators of longevity genes--the resveratrol story said so but it's known to be incorrect

it's just a story
Read 8 tweets
Charles Brenner, PhD Profile picture
Sep 19, 2022
🧵

the ancient writer Herodotus is considered the father of history

in his writings are legendary waters that allow its inhabitants to stay forever young

the story was bullshit of course
explorers used such stories to go on adventures and conquests

around 120 yrs ago, Diamond Lil MacConnell created a Florida theme park out of a well on her property but the waters have no magical property
today we can ask whether all the longevity talk is still a grift or is there a substantive advance behind some folks’ optimism about lifespan?

the most vocal optimists are all selling something: books, podcasts, seminars, drugs, etc
Read 16 tweets

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!

Send Email!

:(