9月30日VOA聽力：膿毒癥醫治新辦法
Sepsis can be triggered by pneumonia, surgery,even childbirth. Symptoms include fever, increasedbreathing, and confusion. The body’s defensesystem goes out of control, causing widespreadinflammation, organ failure and septic shock, whereblood pressure drops to a dangerously low level.
Scientists at Harvard University’s Wyss Institute are working on a new dialysis system thatcleans the blood of poisonous pathogens before they trigger that deadly inflammatoryresponse.
The current standard of therapy is to give antibiotics and fluids. But what we are talkingabout here is treatment for sepsis.
The researchers are filtering blood through a tube with tiny mesh fibers coated with anengineered protein called fcMBL. They bind to the cell wall of bacteria, of fungi, of manyviruses and many parasites and they bind to toxins as well.
Mike Super described the procedure. We’re coating the inside of the tubes with that proteinand we are running the infected blood from the patient through that, through the filter andbinding, absorbing, capturing the pathogens that are in that blood, so that the blood that isgoing back to the patient after the dialysis is cleansed.
In a trial phase using rats, the dialysis treatment was more than 99 percent effective infiltering out deadly bacteria. The research team hopes to begin human trials soon, in hopes ofsaving millions of lives around the world.
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