Rheumatoid arthritis is a chronic inflammatory
disorder marked by joint pain, swelling and damage. Although
medications, such as steroids, anti-inflammatory drugs and
immunosuppressants, can help slow joint destruction and relieve
pain, they have side effects and aren’t completely successful. Now,
researchers reporting in ACS’ Nano Letters have developed
magnesium-based micromotors propelled by hydrogen bubbles, which
improved rheumatoid arthritis symptoms when injected into the
joints of rats.