BloodVessel
Latest
Artificial blood vessels can cause your body to regrow the real thing
A blocked blood vessel can be pretty nasty, and the two most common treatments involve wedging it open or transplanting another vessel from elsewhere in your body. Scientists in Vienna think they may have a slightly more elegant solution to the latter, having developed a method of replacing blocked vessels with artificial ones. The clever part here is that the synthetic polymer that the prostheses are made of encourages the body to grow a real vessel in its place. In one trial on a rat, it took less than six months before the artificial material had broken down and been replaced with a brand new blood vessel.
Scientists develop blood swimming 'microspiders' to heal injuries, deliver drugs
Scientists at Penn State would like to release tiny spiders into your blood -- no, it's not the premise for a new horror movie, but rather, it's a medical breakthrough. The spider-like machines are less than a micrometer wide (just so you know, a red blood cell is around six to ten micrometers), and are designed to travel through veins delivering drugs and a little TLC to damaged areas -- not a totally new concept, per se, but even minor advancements can open up all sorts of new doors for troubled patients. Made of half gold, half silica, these microspiders are self-propelled by a molecule called the Grubbs catalyst, which scientists can control directionally using chemicals. Although still in the preliminary phases, lead researcher Ayusman Sen hopes to one day attach the creepy crawlers to nanobots, which could maneuver through the body to detect tumors, helping the immune system and scrubbing vessels clean of plaque. Not like that's doing anything to diffuse your arachnophobia, but hey...
