Apr

22

Category: Health | Date : April 22, 2014

Ludwik Leibler laboratory ” Soft Matter and Chemistry” and Didier Letourneur, laboratory translational vascular research, have developed an original method of bonding based on nanoparticles contained in a solution.

The principle spread this solution on surfaces paste to link the nanoparticles to the tissue molecular network and allow the formation of connections between the two surfaces.

A priori extremely simple, this method of bonding is a revolution in the biological world no satisfactory solution had been allowed to stick tissues together.

It was necessary to overcome the obstacle conferred by the nature of the tissues, near that of gels, liquid, soft, slippery, very difficult to to join them.

Tested on deep wounds of rats, the aqueous solution of nanoparticles without chemical reaction, put thirty seconds act.

compared to the traditional method of stitches, she has demonstrated a simple use and efficiency remarkable, allowing rapid healing without inflammation or necrosis, to its almost complete disappearance.

Beyond skin, the nanoparticle solution can also help repair organs ” Soft ” such as the liver, spleen or lung, difficult to suture because they tear the passage of the needle, the researchers said in a statement Inserm.

These have tested rats with a deep gash in their liver or lobe severed, causing heavy bleeding : applied to the edges of the wound, which then e ty pressed against each other, the solution has a few seconds to stop the bleeding and thereby preserve the body.

But for researchers, the applications of this solution does not stop there.

They plan – after having experienced successfully on the heart – set of medical devices organs or tissues, to therapeutic purposes or mechanical repair and reinforcement, they specify.

It is safe bet this French discovery should allow the era of regenerative medicine to gain a new momentum.

Angewandte Chemie, published online April 16, 2014.

Apr

22

Category: Psychology | Date : April 22, 2014

Learning through imitation and recognition in the other, even and especially if he is wrong.

These are the findings of a study published by researchers from Inserm and could be applied to school.

These are macaques, the closest man and skillful animals imitation, the researchers studied to try to understand the brain mechanisms and behaviors of social learning.

Same exercise in move objects to find which was hiding a sweet repeated to three times before a group of monkeys.

This is primarily a trained macaque which are executed, then a human who did not eat the candy discovery, and finally, in a last test, the same man who found and tasted.

After each series of exercises, the researchers checked whether the monkeys had understood the exercise and were able to reproduce.

” The results show that monkeys learn better if the exercise is performed by an operator who acts as them is to ie eating the reward when it presents itself, ” the authors explain in a statement.

” There is even a prerequisite for transfer of jurisdiction,” said Elisabetta Monfardini, co- author of the study.

Another lesson, monkeys learn better by mistake or when observers choose the object unrequited.

Researchers draw similarities could be exploited in the school context.

” Maybe choose a child who makes mistakes, that the less gifted identify, would better stimulate the acquisition of knowledge, “says the researcher.