第1个回答 2011-09-09
A new way of taking tuberculosis drugs shows promise in laboratory tests. Instead of taking a pill or getting a shot, patients would inhale their medicine to get the drug deep into the lungs.
Tuberculosis is one of the world's most serious health challenges. The World Health Organization says one-third of the world's population is infected - that's two billion people. The vast majority of them never get sick, but last year alone more than nine million did, and an estimated 1.7 million died from TB.
Treating tuberculosis has never been easy. Drugs must be taken for months, and too often patients stop taking the pills, which opens the way for resistant forms of the disease to develop. So the search is on for better ways to treat TB.
A PhD student at the University of Colorado has been exploring using existing drugs in a new form - a very fine powder that is inhaled, instead of a pill. J'aime Manion says most tuberculosis bacteria cluster in the lungs, so delivering drugs directly to the lungs can be more effective, faster, and require lower doses.
"Over and over again we see that when you treat with inhalation, you see a faster clearance of the bacteria," she said. "And this is so important because the treatment times for tuberculosis are from three to six months, with tons of antibiotics, with terrible side effects."
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