A healthy old age may trump immortality There may be ways to stay vibrant for much longer than we do today By Tina Hesman Saey , 18:47 PM July 6, 2016 On the inevitability scale, death and taxes are at the top. Aging is close behind. It’s unlikely that scientists will ever find a way to avoid death. And taxes are completely out of their hands. But aging,
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, is a problem that science just might be able to fix. As biological scientists see it, aging isn’t just accumulating more candles on your birthday cake. It’s the gradual deterioration of proteins and cells over time until they no longer function and can’t replenish th... Source URL:


Rare Chinese tree may help fight leukemia?—?Leukemia victims may one day be helped by a substance drawn from an obscure Chinese tree. Tests on laboratory animals with a type of experimental leukemia … have shown that the extract, known as camptothecin, has high antitumor properties. However, no tests on humans have yet taken place. Chemists are trying now to synthesize the substance, whose only known natural source is the rare Camptotheca acuminata tree,
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.??—?Science News,
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,?August 20, 1966
UPDATE ,
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Although it didn’t prove effective against leukemia,
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, a synthetic version of camptothecin is used to treat ovarian,
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, lung and colon cancers. Clinical trials in humans began in the late 1960s, but early efforts to make the compound water soluble came with toxicity. Patient studies resumed in the 1980s,
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, once researchers made safer water-soluble versions that could still kill tumors. Two synthetic forms, marketed as Camptosar and Hycamtin, are used in chemotherapy treatments today.

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