hormone

Comparison of normal bone (left) with osteoporosis (Image from www.medguidance.com)   A recent review published by Dr. Graziana Colaianni (University of Bari, Italy) and colleagues in the American Journal of Physiology - Regulatory, Integrative and Comparative Physiology, has summarized recent research on the role of the hormone oxytocin in the regulation of bone mass. Bone remodeling and rebuilding are constantly occurring in our bodies. Osteoporosis is a condition that develops when the process of building new bone does not keep up with the process of breaking down "old" bone tissue.…

Image from Reuters and The NY Times Congratulations to Drs. Randy W. Schekman, Thomas C. Südhof and James E. Rothman (above left to right) for earning the 2013 Nobel Prize in Physiology or Medicine for their research in "discoveries of machinery regulating vesicle traffic, a major transport system in our cells." Cells often make products like hormones and neurotransmitters that need to exit the cell in order to simulate or inhibit other cells. The reason these three scientists were selected for the award is that their research discovered how cells regulate the export of vesicles containing…

The social interactions that come naturally to most people are difficult for people with autism and Asperger syndrome. Simple matters like making eye contact, reading expressions and working out what someone else is thinking can be big challenges, even for "high-functioning" and intelligent individuals. Now, a preliminary study of 13 people suggests that some of these social difficulties could be temporarily relieved by inhaling a hormone called oxytocin. The participants, who either had Asperger or high-functioning autism, experienced stronger feelings of trust, showed stronger social…

Mark Hemingway, the Conservative "tough-guy" for the National Review, has just posted a rant against health concerns for the endocrine disruptor Bisphenol A. I've seen some estimates that over a billion people have had exposure to BPA and there isn't proof of anything. So why the big scare? I assume trial lawyers are involved in the fear mongering. That's a given. But then I saw that last year two reporters from the Milwaukee-Journal Sentinel won a George Polk Award-- a major journalism honor -- for reporting on the "dangers" of BPA. It's another reminder that there are some perverse…