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Dietary Supplement Could Fight Intestinal Worms

by Dr. Enozia Vakil on November 17, 2013 at 11:27 PM
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 Dietary Supplement Could Fight Intestinal Worms

By feeding them a modified version of a dietary supplement, scientists have now successfully cured lab animals of intestinal worms that affect around 1.5 billion people.

Raffi Aroian, PhD, principal investigator of a team of scientists at the University of California, San Diego, said that they need to replicate the results in other animals and also in humans, but this is an important development in their effort to find a safe, affordable and effective way to confront a major global health problem.


While rarely fatal, soil-transmitted helminths (STH) and other intestinal worms are leading contributors to disease in school-age children in low-income countries and are viewed by many experts as among the most burdensome of the world's "neglected tropical diseases" or NTDs.

The study conducted by Aroian's team focused on hookworms, common STHs that are found in soil that has been contaminated with human feces. Hookworms can linger in the intestines for years, where they feed on blood and tissue, robbing their hosts of iron and protein and interfering with absorption of critical nutrients.

They frequently cause stunting and cognitive delays in infected children. They also can have long-term effects on educational achievement and productivity.

In the experiment, the hamsters were later divided into two groups. One group received a common strain of the bacteria Bacillus subtilis, which is often marketed as a "probiotic"-a dietary supplement consumed as a pill or added to food that is intended to promote digestive health. It also is the key ingredient in a popular Japanese fermented soybean dish called Natto.

The other group received the same probiotic, except the researchers modified it to express a protein derived from a closely related bacterium, Bacillus thuringiensis or Bt, which is known to be safe in humans but potentially lethal to intestinal worms.

Yan Hu, PhD said that 5 days after administering the bacteria, they examined the animals' intestines, and found no worms in the animals that got the modified probiotic, while those that did not receive the modified probiotic remained infected.

Source: ANI

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