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Magnetocaloric Material For Cancer Treatment
- 21 Jul 2020
- Scientists at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) have developed a rare-earth-based magnetocaloric material (certain materials in which application and removal of a magnetic field causes the materials to become warmer or cooler) that can be effectively used for cancer treatment.
- Advancements in magnetic materials led to the development of magnetic hyperthermia to address the issues of side effects of cancer treatment like chemotherapy.
- In magnetic hyperthermia, magnetic nanoparticles are subjected to alternating magnetic fields of few Gauss, which produce heat due to magnetic relaxation losses. Usually, the temperature required to kill the tumor cells is between 40 and 45°C. However, the drawback in magnetic hyperthermia is the lack of control of temperature, which may damage the healthy cells in the body and also have side effects like increased blood pressure, etc.
- These problems can be avoided by using magnetocaloric materials, as it can provide controlled heating. The advantage of magnetocaloric materials which heat up or cool down with the application and removal of the magnetic field, respectively is that as soon as the magnetic field is removed, cooling effect is generated, unlike in magnetic nanoparticles where overheating persists, even after removal of the magnetic field.
- This method, when used in conjunction with radiation therapy, would reduce the side effects, damage caused to the human body and also reduce the treatment time of cancer tumours.
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