New therapies could treat tissue swelling that afflicts cancer surgery patients and others

Science | AAAS | 10/10/2018 | Staff
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Every night for the past 5 years, Patricia Egan has prepared for bed by pulling on a pair of chipped foam leggings that encase her limbs from her toes to the tops of her thighs. The custommade garments, which look like something a hockey goalie might wear, are supposed to prevent her legs from swelling. But they also make her feel claustrophobic and keep her awake, says Egan, 67, a retired writer from Chico, California. In the morning, she switches to less cumbersome toe gloves and knee-high compression socks that can still be uncomfortable.

Egan needs this bothersome and costly clothing because she suffers from lymphedema, a condition in which the fluid known as lymph doesn't drain normally from a limb or other part of the body. Many cases of lymphedema result from surgery for breast cancer and other tumors that severs the lymphatic vessels, which transport lymph and immune cells, but Egan's is a rare inherited form. "It's like being 8 months pregnant all the time," she says. "Your legs feel swollen and heavy, and they just won't move." As the lymph pools, it can also cause a host of other health problems.

Egan - Compression - Clothing - Curtails - US

Although Egan's compression clothing curtails swelling, it can't reestablish her lymphatic circulation—no U.S. Food and Drug Administration–approved therapy can. That's why she recently jumped at the chance to participate in a clinical trial at Stanford University School of Medicine in Palo Alto, California. Researchers there and at several other institutions were testing whether the drug ubenimex, a leukemia treatment used in Japan, can spur the growth of new lymphatic vessels.

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Results of this phase II trial may be announced later this year, and researchers have started or are planning trials of other strategies for regenerating...
(Excerpt) Read more at: Science | AAAS
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