QDots in the BioMed Revolution: Hmmm, how about t
Post# of 22465
(Total Views: 431)
Posted On: 11/28/2017 9:27:15 AM
QDots in the BioMed Revolution:
Hmmm, how about that....something new learned each day, as it should be;
"The main reason why most nanoparticles cannot be introduced into a human body is that they are toxic to living cells. This refers not just to certain chemical elements that the living cells contain [or presumably foreign elements i.e; Cd?], but to nanotoxicity. Nanoparticles are very small; they are similar to molecules in size. Their introduction causes the proteins in our bodies to adhere to the nanocrystals and turn inside out, thus leading to a sharp response from our immune system, which tries to destroy the “alien” proteins.
In the human body, nanoparticles can also become focal points for the formation of filamentous (fibrils) and twisted proteins, which resemble the plaques that form in those with Alzheimer’s Disease, and which can block the transmission of nerve impulses. There are several ways to prevent the proteins’ adhesion to nanocrystals. Researchers at MEPhI, for example, strive to make the surface of nanoparticles “unappealing” to proteins, thereby ruling out the possibility of adhesion. At the same time, the size of the particles must remain within the norm (2.5 to 5 nanometers), so that the nanocrystals can be removed from the body with a probability close to 100 percent."
“It is most likely that the problem of nanomaterials’ toxicity will never be solved,” said Igor Nabiyev, head of the nano and bioengineering laboratory at MEPhI, and professor at the University of Reims Champagne-Ardenne (France), quoted by RIA Novosti. “However, prospects for their use in medicine will always be determined by weighing up their positive and negative effects on diagnosis and treatment. Obviously, anti-cancer drugs, to give one example, pose a great threat to the body’s healthy tissues, but there is no other way to destroy tumors. Therefore, the nanobiotechnologists’ current goal is to minimize the effect of toxic substances on the body’s healthy cells and organs. We have to take risks in order to improve the chances of saving lives and improving health.”
https://sputniknews.com/science/2017112810594...akthrough/
Hmmm, how about that....something new learned each day, as it should be;
"The main reason why most nanoparticles cannot be introduced into a human body is that they are toxic to living cells. This refers not just to certain chemical elements that the living cells contain [or presumably foreign elements i.e; Cd?], but to nanotoxicity. Nanoparticles are very small; they are similar to molecules in size. Their introduction causes the proteins in our bodies to adhere to the nanocrystals and turn inside out, thus leading to a sharp response from our immune system, which tries to destroy the “alien” proteins.
In the human body, nanoparticles can also become focal points for the formation of filamentous (fibrils) and twisted proteins, which resemble the plaques that form in those with Alzheimer’s Disease, and which can block the transmission of nerve impulses. There are several ways to prevent the proteins’ adhesion to nanocrystals. Researchers at MEPhI, for example, strive to make the surface of nanoparticles “unappealing” to proteins, thereby ruling out the possibility of adhesion. At the same time, the size of the particles must remain within the norm (2.5 to 5 nanometers), so that the nanocrystals can be removed from the body with a probability close to 100 percent."
“It is most likely that the problem of nanomaterials’ toxicity will never be solved,” said Igor Nabiyev, head of the nano and bioengineering laboratory at MEPhI, and professor at the University of Reims Champagne-Ardenne (France), quoted by RIA Novosti. “However, prospects for their use in medicine will always be determined by weighing up their positive and negative effects on diagnosis and treatment. Obviously, anti-cancer drugs, to give one example, pose a great threat to the body’s healthy tissues, but there is no other way to destroy tumors. Therefore, the nanobiotechnologists’ current goal is to minimize the effect of toxic substances on the body’s healthy cells and organs. We have to take risks in order to improve the chances of saving lives and improving health.”
https://sputniknews.com/science/2017112810594...akthrough/
(1)
(0)