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12 December 2013 1:00 pm ,
Vol. 342 ,
Stefan Behnisch has won awards for designing science labs and other buildings that are smart, sustainable, and...
The iconic 125-year-old Lick Observatory on Mount Hamilton near San Jose, California, is facing the threat of closure...
Recent results from the Curiosity Mars rover have helped scientists formulate a plan for the next phase of its mission...
A new, remarkably powerful drug that cripples the hepatitis C virus (HCV) came to market last week, but it sells for $...
In pretoothbrush populations, gumlines would often be marred by a thick, visible crust of calcium phosphate, food...
Evolutionary biologists have long studied how the Mexican tetra, a drab fish that lives in rivers and creeks but has...
Victorian astronomers spent countless hours laboriously charting the positions of stars in the sky. Such sky mapping,...
In an ambitious project to study 1000 years of sickness and health, researchers are excavating the graveyard of the now...
- 12 December 2013 1:00 pm , Vol. 342 , #6164
- About Us
Anatomy of an Adrenaline Rush
19 November 1999 8:00 pm
How stress hormones unleash a surge of energy was explained by Earl Sutherland, a biochemist born 84 years ago today
. Sutherland found that adrenaline accelerates the breakdown of sugar in the liver to provide quick energy during moments of stress. He later discovered that the hormone stimulates individual cells in two steps. First, it latches onto a receptor on the cell surface. The receptor then triggers the release inside the cell of a second signal: a molecule called cyclic AMP (cAMP). Sutherland then determined that cAMP has a larger role, serving as an intermediary for many hormones regulating metabolism in both simple and complex organisms. For this fundamental breakthrough, he received the Nobel Prize in physiology or medicine in 1971. He died 3 years later.
[Source: Emily McMurray, Ed. Notable Twentieth Century Scientists. Gale Research Inc. ITP. 1995.]