BALTIMORE Nov. 2, 2005 Scientists are testing a new anti-nicotine
vaccine in the battle to help people quit smoking. Unlike the nicotine patch,
which helps smokers gradually withdraw from nicotine, the vaccine targets
the nicotine and blocks it from getting to the brain.
Researchers led by Dorothy Hatsukami of the University of Minnesota have
shown that the new vaccine in humans appears to be safe in early results
being presented today during the American Association for Cancer Research's
4th annual "Frontiers in Cancer Prevention Research" meeting in Baltimore.
"We are encouraged by the results of this study, which suggest that a nicotine
vaccine may be a safe and potentially effective way to reduce tobacco dependence
or as a relapse prevention aid," said Hatsukami in a news release. "Two
additional human clinical trials with other nicotine vaccines have been conducted
which showed similar safety profiles and higher abstinence rates in the highest
nicotine vaccine dose or antibody level groups, and we hope to conduct further
trials to confirm these results."
Bone Cancer Types
There are many different types of bone tumours, but the two most common kinds
which affect teenagers are osteosarcoma (spoken as 'os-tee-o 'sar-coma')
and Ewing's sarcoma. Sarcoma is the term used to describe a tumour which
starts in connective tissue (e.g. eg bones, muscle, fat or cartilage) and
the term used before it tells you the type of cell that is involved.
It's important to know the type, so that you are given the right treatment
for your condition. Your doctor can tell the type through a variety of tests,
but the most important is looking at the cells under a microscope.
osteosarcoma
Sometimes called osteogenic (spoken as os-tee-o gen-ic) sarcomas, they tend
to affect the legs, especially around the knee joint, but can affect any
bone.
Ewing's sarcoma
Ewing's can also affect any bone, but is most commonly found around the pelvis
(the lower cavity of the body made up of the tail bone and the two hip bones)
and leg bones (femur and tibia, our thigh and shin bones).
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