Are framed safe nanoparticles for delivery of medicines
The smallest luminescent nanoparticles can tell about an exact site of a cancer tumour and to deliver to it necessary medicines, but the majority shown before materials toxic. Working out of biologists from university of California in San Diego (University of California, San Diego) not only does not break up to harmful by-products, but also differs a number of other merits.
The American scientists have framed biodecomposed nanoparticles viagra 360 pills order from silicon. They radiate bright light long enough and do not break up too quickly, having time to let out the necessary dose of a medicine for a cancer. Thus they do not contain harmful additives (quantum points with serious metals or unsafe organic chemistry).
"We have developed the first luminescent nanoparticles which do not possess toxic effects", - professor Michael Sejlor (Michael Sailor) tells.
One of students Luo Gu shows a solution safe наночастиц and a luminescence of tissues in ultra-violet light (photo University of California, San Diego).
Tests for mice have shown, that silicon nanoparticles are safe for people (in a liver, kidneys and a lien it it was not revealed any radical changes). Having got to tumoral tissues, particles some hours continued to be shone and faded in process of disintegration.
In article published in magazine Nature Materials, scientists report, that in two weeks the quantity nanoparticles in sick tissues was strongly reduced, and through four to find out them it was not possible at all.
To receive safe nanoparticles, biochemists at first synthesised very thin silicon plates. By means of an electric current to them have given porous structure. Then ultrasound of a plate generic hydrochlorothiazide online have split on very small parts (the size of an order 100 nanometers). The further physical processing has forced them to be shone by red colour in an ultraviolet. (In the university press release there is video in detail illustrating process of creation safe наночастиц.)
Scientists notice, that luminescent microlamellas allow to find out even the smallest tumours "inaccessible" to other methods, and also to show to the surgeon not remote rests of a tumoral tissue.
Porous structure of silicon plates. The size of pores can be varied, but average diameter makes an order 80 nanometers (photo University of California, San Diego).
The material of this group is good also that helps to deliver buy Zovirax now very precisely the necessary medicine (Doxorubicinum). In process of dissolution porous silicon nanoparticles it slowly leaves pores and influences.
"The purpose of such therapy: the medicine to deliver exact to a tumour, not to allow to it to get to other parts of a body", - speaks Seilor. The more precisely medicine delivery, the less effective dose, the less toxic influence of substance to an organism.
