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Barrier Key

30.05.2015

The nanoparticle was able to open the barrier between the circulatory system and the brain.

The blood-brain barrier does not let potentially dangerous blood components into the brain: microorganisms, toxins, immune system factors. Unfortunately, he does not miss many medicines. Physicists from the University of Montreal, led by Ani-Sophie Carret, managed to find the key to the lock that closes the barrier. They turned out to be magnetic nanoparticles. So far, experiments have been carried out on moray eels, but there is hope in the near future to move on to experiments with people.

In one of the preliminary studies, scientists found that magnetic particles can be brought to the right place using a magnetic resonance imaging device. In the new experiments, nanoparticles were brought to a barrier separating the brain and blood, and then microwave radiation was directed at them. The particles warmed up and heated everything around them, which increased the permeability of the barrier. So it became possible to drag nanoparticles with medicine through it.

The authors of the work hope that in the future it will be possible to fine-tune the technique and bring these particles that have gone beyond the barrier to the desired part of the brain. So far, this requires surgery.

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Old phone: heat up after use 11.12.2000

Every year, the British throw thousands of broken, obsolete or unwanted mobile phones into the landfill. But soon, at the pan-European level, a law is to be adopted requiring the obligatory waste-free use of all electronics. Unnecessary appliances should be disassembled into parts that can somehow be reused or buried in a safe place.

Dismantling and sorting into parts small devices such as a pocket phone is a difficult and painstaking manual labor. Therefore, employees of Brunel University in London proposed to make mobile phones from metals and plastics with shape memory. When heated to a certain temperature, such an apparatus simply disintegrates, and the resulting pile of parts is easy to sort.

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The prototype of the self-disintegrating phone is already ready, it may appear on sale by 2005.

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