For the first time scientists have demonstrated a model that may explain how alcohol stimulates tumor growth. Their study, published in the January 15, 2005 issue of CANCER,says alcohol fuels the production of a growth factor that stimulates blood vessel development in tumors, and that chronic ethanol increased tumor size and levels of the angiogenic factor and levels of the angiogenic factor and vascular endothelial growth factor (VEGF) in an experimental model.
For almost a hundred years mounting epidemiological evidence has linked alcohol use to an increased risk of cancers of the stomach, esophagus, liver, breast, and colon. Researchers have never developed an adequate model to explain how ethanol or a metabolite of ethanol may cause cancer. Hypotheses abound, and include such diverse theories as acetaldehyde carcinogenicity, dietary imbalances, and impaired nutrient metabolism and detoxification due to alcohol consumption, activation of precancerous enzymes, and suppression of the immune system.
Recent data in a cellular model has demonstrated that ethanol increases cellular production of VEGF, an important signaling protein in blood vessel growth, particularly in tumors. Jian-Wei Gu. M.D. from the University of Mississippi Medical Center and colleagues further investigated the possible mechanism between ethanol-induced blood vessel growth and VEGF using a chick embryo model. The investigators exposed chick embryos inoculated with fibrosarcoma cells to saline or physiologically relevant levels of ethanol for nine days.
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
Pan-European study on “Smart Engineering”
30.03.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
30.03.2017 | Health and Medicine
30.03.2017 | Health and Medicine
30.03.2017 | Medical Engineering