倫倫的小blog

 


Fruit Juices Block Some Drugs
You've no doubt heard that grapefruit juice can greatly increase the effects of some drugs. Even to a dangerous degree. Pharmacologist David Bailey made that discovery almost 20 years ago. A substance in the juice blocks an enzyme that breaks down the drugs. Now Bailey's back with a fresh finding—grapefruit juice, orange juice, apple juice and other fruit juices can also severely decrease the absorption of certain drugs. He announced this discovery August 19th at the national meeting of the American Chemical Society in Philadelphia.
Some of the drugs that have their dosages effectively decreased by various juices include medications that fight heart disease, infection and even the rejection of transplants. Key ingredients in the juices appear to block a molecule that carries drugs from the small intestine into the bloodstream. So a lot of the medication gets flushed out without ever reaching its target. Bailey says, "This is just the tip of the iceberg.  I'm sure we'll find more and more drugs that are affected this way."  So when taking medications, a sip of H2O is probably the way to go.

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1918 Flu Antibodies Alive and Well

Some people never forget a face. Others never forget a flu. Even if they were infected more than 90 years ago. A team of American scientists studied 32 people who survived the 1918 flu epidemic. That virus, also called the Spanish flu, killed an estimated 20 to 100 million people worldwide.
Of course many more survived, and some are still around today. The scientists tracked them down and took a small sample of their blood. And they found that all 32 people they tested still had circulating antibodies that could recognize the 1918 flu strain. What's even more remarkable is that these immune molecules still work. Injecting the antibodies into mice protected the animals from experimental infection with the virus. The results were published online in the journal Nature on August 13th.

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Air Fresheners' Unlisted Ingredients
Laundry detergents and air fresheners have long promised
to keep your house and clothes smelling sunshine fresh and rain shower clean.
But what they haven't said is what exactly you're sniffing
when you snuggle up in your just-washed sheets.
After hearing from people who said strong scents made them sick,
University of Washington researcher Anne Steinemann
scratched the surface and found almost a hundred chemicals
that weren't listed on the labels.
According to her report in the journal Environmental Impact Assessment Review,
plug-in air fresheners, scented sprays, dryer sheets and detergents
all contained a mixture of volatile organic compounds.
Since manufacturers aren't required to list their ingredients
for such consumer products,
the boxes only admitted to containing a "mixture of perfume oils."
But five out of the six products Steinemann tested emitted one or more
so-called hazardous air pollutants,
which are carcinogens determined to have no safe exposure level by the EPA.
While the study did not test for any human health risk from exposure to these chemicals,
Steinemenn says the next time the air in the house smells stale,
maybe you just open a window.
大意:
科學家發現在洗衣精、空氣清香劑中有許多成分為被標明
但而不能知道這些成分對人體有沒有害

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Bees Help Track Criminals
Unless you're talking about killer bees,
it's hard to imagine a situation
in which 「killers」 and 「bees」 would be related.
But it turns out that scientists are using the same mathematical model
to describe the behavior of both bumblebees and human serial killers. 

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