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- <text id=93TT0872>
- <title>
- Jan. 11, 1993: Bark with a Bite
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1993
- Jan. 11, 1993 Megacities
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- THE WEEK
- HEALTH & SCIENCE, Page 15
- Bark with a Bite
- </hdr>
- <body>
- <p>Taxol, a drug derived from tree bark, is approved to treat ovarian
- cancer
- </p>
- <p> More than 20,000 American women are diagnosed each year with
- ovarian cancer, many with the disease in an advanced stage, and
- chemotherapy seldom helps prolong their life. There is one
- effective treatment: taxol, a substance found in the bark of the
- Pacific yew tree. Taxol doesn't cure the cancer but does slow
- its progress for months in up to 30% of patients. Now it has
- received the blessing of both the U.S. Food and Drug
- Administration and Canadian authorities as an approved treatment
- for ovarian cancer. It is also being investigated for possible
- effectiveness in combatting breast and other cancers. The only
- catch: treating one patient takes four trees' worth of bark, and
- Pacific yews, which grow in protected forests in the Pacific
- Northwest, are rare. But taxol seems to be available from the
- trees' needles as well, and pharmaceutical firms are working to
- synthesize it in the lab. Scientists may be able to resolve the
- conflict between preserving wilderness and saving human lives.
- </p>
-
- </body>
- </article>
- </text>
-
-