homehome Home chatchat Notifications


Aging, a simple error of evolution??

  Everybody pondered at least once in their lives the possibility of being immortal, and this idea sparkled in the immagination of many people throughout history. Now, Stuart Kim, a PhD at Stanford and professor of developmental biology and genetics conducted a study that led to results that shocked pretty much everybody involved, contradicting the […]

Mihai Andrei
July 30, 2008 @ 2:30 pm

share Share

 

aging

Everybody pondered at least once in their lives the possibility of being immortal, and this idea sparkled in the immagination of many people throughout history. Now, Stuart Kim, a PhD at Stanford and professor of developmental biology and genetics conducted a study that led to results that shocked pretty much everybody involved, contradicting the currently accepted theory that aging is represented by a damaging of the tissue, similar in many reasons to the rust of a circuit.

The study led to the conclusion the instead aging is driven by a genetic instruction, coded deep into the genome; this of course leads to the conclusion that (if this is true) it could someday be possible to turn off the gene responsable for the process, which seems really unbelievable. Still, that is what the study conducted on C. elegans showed.

By comparing the old worms to the younger worms, the team of scientists discovered age-related shifts in levels of three transcription factors, which are (very lightly explained) the marks of turning genes on and off. The other, older, and (until now) wider accepted theory is that aging is a tear and wear process; the body acumulates toxins, radiations, which cause an irreversible process. But Stanford researchers published findings which tell a different story.

“Our data just didn’t fit the current model of damage accumulation, and so we had to consider the alternative model of developmental drift,” Kim said.

Basically what they did is used a trigger to find out if there were any changes in gene expression and found hundreds of age-regulated genes switched on and off by a single transcription factor which is more abundent by age. So it looked as though worm aging wasn’t a storm of chemical damage. It seems we’ll have a bit of waiting to do until more research is done in this directions, but the results could be very impressive.

share Share

Peacock Feathers Can Turn Into Biological Lasers and Scientists Are Amazed

Peacock tail feathers infused with dye emit laser light under pulsed illumination.

These wolves in Alaska ate all the deer. Then, they did something unexpected

Wolves on an Alaskan island are showing a remarkable adaptation.

Potatoes were created by a plant "love affair" between tomatoes and a wild cousin

It was one happy natural accident.

This Scientist Stepped Thousands of Times on Deadly Snakes So You Don't Have To. What He Found Could Save Lives

This scientist is built different.

Stuttering Has Deep Genetic Roots and May Affect Your Ability to Clap to a Beat

A massive genetic study found that stuttering is not just about nurture and may link to processing rhythm itself.

Aging Isn’t a Steady Descent. Around 50, the Body Seems to Hit a Cliff And Some Organs Age Much Faster Than Others

Study reveals a sharp shift in human aging — starting with the arteries.

Ancient DNA Reveals the Surprising Origins of Attila’s Huns. Genetics Point to an Ancient Mongolian Empire

Ancient DNA traces the Huns' journey from Mongolia to Europe. But this wasn't straightforward.

Amish Kids Almost Never Get Allergies and Scientists Finally Know Why

How Amish barns could hold the secret to preventing the onset of allergies.

Surgeons Found a Way to Resuscitate Dead Hearts and It Already Saved A Baby's Life

Can we reboot the human heart? Yes, we can, and this could save many dying babies and adults who are waiting for a transplant.

UK Families Welcome First Healthy Babies Born With DNA From Three People

Eight children were born with DNA from three people to prevent a deadly genetic disease.