http://english.pravda.ru/science/19/94/377/15259_cancer.html
Russian scientists develop liquid magnet to fight cancer
04/08/2005 15:37
Researchers produced new ferromagnetic materials for treating malignancies
Russian researchers continue developing new methods of controlled
hyperthermia, a treatment of malignant tumors by inducing fever. Cancer cells
are destroyed at 42-43 degrees Celsius. Researchers at the Emanuel Institute of
Biochemical Physics of the Russian Academy of Sciences and the Moscow State
University produced new ferromagnetic materials. A series of experiments
conducted at the Russian Oncology Research Center of the Russian Academy of
Medical Sciences show that the materials combined with anticancer drugs can be
successfully used for treating malignancies.
Biochemists synthesized the nanoparticles of ferromagnetic materials with
a low Curie point (42-45 degrees Celsius). The nanoparticles lose their
magnetic properties when heated to the above temperature. The nanoparticles can
be used for preparing water-based magnetic fluid. Anticancer drugs are added to
the fluid. Then the fluid is injected into a patient.
The nanoparticles are driven by the force of an external magnetic field.
They concentrate in a tumor and start heating evenly. They heat up the
encircling tissues to Curie point thus destroying cancer cells. They also lose
their ferromagnetic properties at that point. The lowering of temperature
results in another round of magnetization for the nanoparticles and they heat
up again because of an external magnetic field. The disease-stricken tissues
are heated by them in the process.
The hyperthermia treatment helps anticancer drugs kill cancer cells. In
the meantime, healthy cells remain intact. The best results were produced by
magnetic fluids derived from manganite whose makeup includes strontium,
lanthanum, manganese, and oxygen.
Read the original in Russian: (Translated by: Guerman Grachev)
[Non-text portions of this message have been removed]
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