Word: bloodstreams
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...Back in the 1990s, Deng Xiaoping worried about the "Hong Kong virus" entering the bloodstream of the mainland and challenging the Communist Party's monopoly on power. Now that Beijing has struck its deal between economic freedom and political restriction, the virus looks as if it is moving the other way. So what, the Hong Kong administration may say, if we lock up a few dissenters to burnish our credentials with the emperor to the north provided he gives us some economic advantages to pull us out of our slump...
...Zinner:These cases are all under investigation, so we don't really know yet exactly what's happened. But with most self-limiting viruses, like this one, the virus clears itself out of the bloodstream when the patient recovers. So it's possible the donor was incubating the virus but wasn't manifesting symptoms, and the organ recipients ended up with symptoms because their immune systems were compromised. But I want to emphasize that we won't know anything for sure until we see more information...
Researchers refer to the amount of glucose a single serving of a particular food releases in the bloodstream as its glycemic load. And there is growing evidence that we can manipulate it somewhat to control our hunger. Broccoli and peanuts, for example, have a low glycemic load, while instant rice and baked potatoes have an extremely high one. Avoiding sugar-laden processed foods and increasing the consumption of fruits and vegetables is a first step toward sensible eating, says Dr. David Ludwig, director of the Optimal Weight for Life Program at Children's Hospital Boston. Choosing small portions of pasta...
...better? Zoloft is one of a group of anti-depressants called selective serotonin reuptake inhibitors (SSRIS) that work by keeping a neurotransmitter called serotonin from attaching to certain biochemical receptors in the brain. But serotonin receptors are also found in lots of other places. Blocking these receptors in the bloodstream appears to reduce formation of artery-choking clots by preventing the aggregation of blood cells called platelets. In essence, SSRIS seem to perform double duty--as mood lifters and blood thinners...
...essence, researchers are discovering, the digestive system tells the brain how much to eat by pumping various hormones, one of which is PYY, into the bloodstream. "There are at least half a dozen signals that we know about," says Michael Cowley, a neuroscientist at the Oregon National Primate Center in Beaverton and one of the co-authors of the Nature paper. Some of these biological traffic lights work in a very short time frame, affecting when you start and stop a meal. Some, like leptin, work over the longer term by helping the brain monitor how much fatty tissue...