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.
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19.07.2016 | Max-Planck-Institut für Bildungsforschung
High in calories and low in nutrients when adolescents share pictures of food online
07.04.2016 | University of Gothenburg
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
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24.10.2016 | Life Sciences
24.10.2016 | Physics and Astronomy