Biological Roles of Water: Why is water necessary for life?

by Molly Sargen figures by Daniel Utter Water makes up 60-75% of human body weight. A loss of just 4% of total body water leads to dehydration, and a loss of 15% can be fatal. Likewise, a person could survive a month without food but wouldn’t survive 3 days without water. This crucial dependence on water broadly governs all life forms.  Clearly water is vital … Continue reading Biological Roles of Water: Why is water necessary for life?

Slow and Steady Drug Delivery Keeps Biomedical Devices Kicking

Researchers from MIT have developed a novel method to locally deliver drugs and prevent immune activity around implanted biomedical devices over several months. The method is based on the formation of crystals of immunosuppressive drugs, which can be included in devices and slowly dissolve over the course of months. While this method substantially increases the length of time tested devices can function, difficulty of crystallizing certain drugs or introducing them into specific devices may prove to be a challenge in adapting this method to other systems. Even so, for many cases, this method will likely substantially reduce the difficulty of maintaining device stability for extended periods of time. Continue reading Slow and Steady Drug Delivery Keeps Biomedical Devices Kicking