Just when the hell will we get researchers to work with this to deliver tPA directly to the blood clot, with a much smaller and less dangerous bolus? I'm guessing never since no one in the stroke medical world has two functioning neurons that can put 2+ 2 together to come up with this solution.
http://www.rdmag.com/news/2016/11/tiny-super-magnets-could-be-future-drug-delivery?et_cid=5675688&
Microscopic crystals could soon be zipping drugs around your body,
taking them to diseased organs. In the past, this was thought to be
impossible - the crystals, which have special magnetic properties, were
so small that scientists could not control their movement. But now a
team of Chinese researchers has found the solution, and their discovery
has opened new applications that could use these crystals to improve -
and perhaps even save - many lives.
Kezheng Chen and Ji Ma from Quingdou University of Science and
Technology, Quingdou, China have published a method of producing
superparamagnetic crystals that are much larger than any that have been
made before. They recently published their findings in Physics Letters A.
If some magnetic materials, such as iron oxides, are small enough -
perhaps a few millionths of a millimeter across, smaller than most
viruses - they have an unusual property: their magnetization randomly
flips as the temperature changes.
By applying a magnetic field to these crystals, scientists can make
them almost as strongly magnetic as ordinary fridge magnets. It might
seem odd, but this is the strongest type of magnetism known. This
phenomenon is called superparamagnetism.
In theory, superparamagnetic particles could be ideal for drug
delivery, as they can be directed to a tumor simply by using a magnetic
field. Their tiny size, however, has made them difficult to guide
precisely - until now.
"The largest superparamagnetic materials that we have been able to
make before now were clusters of nanocrystals that were together about a
thousand times smaller than these," commented Dr. Chen. "These larger
crystals are easier to control using external magnetic fields, and they
will not aggregate when those fields are removed, which will make them
much more useful in practical applications, including drug delivery."
Chen and Ma explained that the high temperature and pressure under
which the crystals form made tiny meteorite-like 'micro-particles' of
magnetite escape from their surface. This caused the unusual pock-marked
appearance of the crystal surfaces and induced a high degree of stress
and strain into the lattice of the growing crystals.
Crystals that grow under such high stresses and strains form with
irregularities and defects in their crystal lattice, and it is these
irregularities that are responsible for the unusual magnetic properties
of Chen's crystals.
Magnetite crystals of a similar size that are grown at a lower
temperature and under normal pressure are only very weakly magnetic.
This method of making larger superparamagnetic crystals paves the way
for the development of superparamagnetic bulk materials that can be
reliably controlled by moderate external magnetic forces,
revolutionizing drug delivery to tumors and other sites in the body that
need to be targeted precisely.
And this is just the beginning. Chen's crystals might, for example,
be useful in the many engineering projects that need "smart fluids" that
change their properties when a magnetic field is applied. These can
already be used to make vehicle suspension systems that automatically
adjust as road conditions change, increasing comfort and safety, and to
build more comfortable and realistic prosthetic limbs.
Now that superparamagnetism is no longer restricted to minute
particles that are difficult to handle, researchers can start exploring
in which ways this can contribute to improving our lives.
Use the labels in the right column to find what you want. Or you can go thru them one by one, there are only 28,983 posts. Searching is done in the search box in upper left corner. I blog on anything to do with stroke.DO NOT DO ANYTHING SUGGESTED HERE AS I AM NOT MEDICALLY TRAINED, YOUR DOCTOR IS, LISTEN TO THEM. BUT I BET THEY DON'T KNOW HOW TO GET YOU 100% RECOVERED. I DON'T EITHER, BUT HAVE PLENTY OF QUESTIONS FOR YOUR DOCTOR TO ANSWER.
Changing stroke rehab and research worldwide now.Time is Brain! trillions and trillions of neurons that DIE each day because there are NO effective hyperacute therapies besides tPA(only 12% effective). I have 523 posts on hyperacute therapy, enough for researchers to spend decades proving them out. These are my personal ideas and blog on stroke rehabilitation and stroke research. Do not attempt any of these without checking with your medical provider. Unless you join me in agitating, when you need these therapies they won't be there.
What this blog is for:
My blog is not to help survivors recover, it is to have the 10 million yearly stroke survivors light fires underneath their doctors, stroke hospitals and stroke researchers to get stroke solved. 100% recovery. The stroke medical world is completely failing at that goal, they don't even have it as a goal. Shortly after getting out of the hospital and getting NO information on the process or protocols of stroke rehabilitation and recovery I started searching on the internet and found that no other survivor received useful information. This is an attempt to cover all stroke rehabilitation information that should be readily available to survivors so they can talk with informed knowledge to their medical staff. It lays out what needs to be done to get stroke survivors closer to 100% recovery. It's quite disgusting that this information is not available from every stroke association and doctors group.
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