When the body gets wounded, it naturally generates molecules known as growth factors that are critical to helping it heal. Now researchers have engineered new versions of these growth factors that can help repair wounds and bone defects in mice faster and more effectively than their own natural versions.
Scientists have long sought to use growth factors to help the body regenerate. These chemicals have led to therapies that help promote new blood vessel and bone formation.
However, low healthy doses of growth factors are often not as useful as one might like, while larger doses “have the potential to be harmful, by generating tissue like bone where you don’t want bone or by inducing cancer,” says Jeffrey Hubbell, a bioengineer at the Swiss Federal Polytechnic School of Lausanne. “Growth factors have gotten, as a class, a bit of a black eye.”
Whether you’re planning on sweeping someone off his or her feet today or toasting the single life, it helps to know the reason for the season.
And for Valentine’s Day, that reason is hormones and neurotransmitters. The folks at the American Chemical Society have helpfully put together this short video primer on the chemistry of love and attraction. They spoke with Abigail Marsh, assistant professor of psychology at Georgetown University, to get a little insight into the biochemical mysteries of the heart.
Click through to see a bonus ACS video on pheromones and the scent of love.
A new method of creating 3-D images of living cells without disturbing them promises to open an unprecedented view into how they operate.
University of Illinois engineers say the technique, called white-light diffraction tomography, will let researchers watch cellular processes as they unfold, the effects of drugs and how stem cells change into specialized cells.