Chinese scientists claim to have discovered substances with
anti-cancer properties in the devilfish, a large deep-sea creature.
The research was initiated seven years ago by the marine biology
research center of the Institute of Naval Medical Sciences of the
People's Liberation Army (PLA) and a Shanghai-based biological
company named "Aobo". Traditionally, residents of coastal areas
used the devilfish to cure measles, toothaches, stomach aches,
diarrhea, scabies, injuries from falls and diseases associated with
pregnancy.
The anti-cancer substances in devilfish are currently being
developed into medicines, said Shen Xianrong, director of the
research center, adding that many deep-sea species contain a
variety of rare substances due to their deep-water environments,
which are highly-pressurized, extremely saline, acidic, alkaline,
hot, cold, dark and largely devoid of nutrition.
Like many other deep-sea species, the devilfish looks odd, with its
large elliptical body and thin, long tail. The creatures move in
groups of three and four at high speed, except when they encounter
enemies, in which case they leap up out of the water and "fly" over
the sea.
In
conducting the research, as a first step, scientists extracted
active substances from the brain and blended them with a variety of
cancer cells. The substances impeded the growth of cancer cells
very effectively, while they had no effect on healthy cells.
In
another experiment, scientists implanted cancer cells into the
hypoderm of mice and then fed one group with normal saline and
another group with water containing the extract from devilfish. Two
weeks later, the tumors of the first group of mice averaged above
two grams, wile the second group's tumors weighed between 0.2 and
0.8 grams.
In
recent years, scientists worldwide have begun to focus on sea
resources in their search for new medicines. The sea is home to
about 200,000 kinds of creatures, or 80 percent of all species
known to man.
(Xinhua News Agency March 4, 2003)