What is this?

MesotheliomaMalignant Mesothelioma is a rare type of cancer in the thin layer of cells lining the internal organs of the body appears as mesothelium known. There are three types of recognized mesothelioma. Mesothelioma is the most common form of the disease, which represents about 70% of cases and occurs in the lining of the lungs known as pleural. Peritoneal mesothelioma appears in the lining of the abdominal cavity as mesothelioma of the peritoneum and pericardium known native pericardium, the heart line.

Who is at risk for mesothelioma?

It provides the only known cause of mesothelioma, exposure to asbestos, but other factors such as smoking, the disease may be more or less likely in some people. Manufacturing workers have been exposed to asbestos exposure at work, since the material was throughout the 20th century uses. Few know that workers exposed to asbestos, but despite the fact that many manufacturers are aware that the material was dangerous. In most cases, symptoms of mesothelioma, there is a person whose exposure to asbestos has occurred for many years after exposure. Those who believe they may have been exposed to asbestos, please fill out our form to receive a free mesothelioma information packet, specific therapeutic options, new treatments and information on the location report.

A possible new treatment for mesothelioma could take the form of cancer target viruses selectively destroy cancer cells while sparing healthy cells. Activation of the virus to express the antiviral protein, interferon beta, which could improve the immune response against cancer and the risk of side effects of treatment, according to a study in mice by the October 1 edition of Cancer Research publishes.

The virus used in the study as oncolytic viruses, and their potential lies in its ability to selectively damage cancer cells, not healthy cells. The virus must use tropism for cancer cells priority over normal cells. In other words, reproducing a more mesothelioma cells than in normal cells, said lead author Richard Vile, Ph.D., professor of immunology and Richard M. Schulze Family Foundation Professor at the Mayo Clinic.

If normal, healthy cells to come into contact with a virus, reacting to the production of high levels of interferon antiviral protein.

Interferon is to close the reproduction of cells and neighboring cells before the virus has a chance for themselves. However, many mesothelioma cells are deficient in their response to interferon, so that if the virus infects, it assumes that cells are no longer near the replication of the virus, as normal cells, says Dr. Vile. This means that unlike chemotherapy drugs, cancer cells and healthy cells, for the destruction of targeted oncolytic viruses destroy cancer cells and are less likely to cause harmful side effects.

In mesothelioma cells to study, Dr. Richard Vile and his colleagues used the virus of vesicular stomatitis virus (VSV), the same family as rabies virus. The VSV used was designed to express interferon beta.

Researchers injected either VSV-expression of interferon-beta, or a pesticide in mesothelioma tumors in mice. Volumes decreased significantly in mice treated VSV. Four of the eight mice were cured of tumors, compared with zero eight mice in the control group. In addition, all mice survived subsequent challenge rejected if put back the mesothelioma cells, indicating that the virus is transmitted to long-term protection.

Activation of the virus expressing interferon-beta increases the activity of the immune stimulation involved to kill tumor cells, the researchers found. Moreover, protected most healthy cells of the virus, avoiding negative side effects.

Dr. Vile warns that the results can often result in animal studies in the service of man, but says his team is very pleased with the results so far. I think that gives us an excellent platform to go into clinical trials and give us reason to believe that it will have implications for human patients, he said.

The next step is the best platform operator determine the purpose of mesothelioma. This study used VSV, but Dr. employees Viles, Steven Albelda, University of Pennsylvania, with adenovirus expressing interferon beta as well. One of the downstream pre-clinical to see what platform the most effective in animals, and that development is perhaps the most powerful clinical Dr. Vile says.

Working in an asbestos plant has long been linked to an increased risk for mesothelioma, but new research finds that living near one of these plants may also increase a person’s risk of developing the disease. Leftover waste from asbestos facilities may contribute to as many as ten additional cases of mesothelioma each year in neighboring communities, according to a recent study in the Journal of Exposure Science and Environmental Epidemiology.

Given the relative rarity of mesothelioma, the increased risk to people living near an asbestos plant is significant. “This is a substantial increase over the expected incidence, we assume roughly two to three times higher than expected,” says lead study author Alex Burdorf, a professor of Public Health at Erasmus University in the Netherlands.

Research has already established a link between on-the-job asbestos exposure and mesothelioma. People who have worked in shipyards and other facilities that process asbestos face a significantly higher risk for the cancer than those in the general population. However the risk to people living near asbestos facilities has been unclear.

“It is a long debate as to whether this environmental pollution may result in additional mesotheliomas,” Professor Burdorf says. “This requires a good method of exposure assessment.” A few previous studies have investigated environmental asbestos exposure by gauging residents’ distance to the plant.

Professor Burdorf and his colleagues decided to try a slightly different approach to get a better idea of mesothelioma risk among people living close to an asbestos-processing plant. They looked at both the number and size of polluted sites, and the number of households that were in close proximity to contaminated areas.

The researchers focused on residential areas close to an asbestos-based cement plant in the village of Goor. Between the 1930s and 1970s, this plant distributed asbestos waste to local residents to harden the ground in their yards and driveways, a practice that left the soil in the area polluted.

The researchers ranked nearby postal areas by their level of asbestos exposure: low (0-1 polluted site), intermediate (2-5 polluted sites), and high (6 or more pollute sites). They also analyzed air samples to determine the concentration of asbestos fibers in the air.

In total, the study identified and included 416 sites with asbestos pollution. Nearly 300 of these sites had asbestos waste material at ground level, where it could increase mesothelioma risk. The postal code areas with the highest level of exposure contained, on average, 33 asbestos-contaminated sites. The researchers also noted significantly higher concentrations of asbestos fibers in the air within 5 meters (16 feet) of asbestos-polluted roads.

The researchers determined that people living in residential areas near polluted sites were being exposed to asbestos concentrations at levels high enough to lead to between two and ten additional mesothelioma cases each year.

In an effort to reduce asbestos exposure, in 2003 the local government launched the Clean Up Asbestos Act – an initiative to remove remaining asbestos from the soil in contaminated areas. Professor Burdorf says that cleaning up asbestos pollution should eventually reduce the number of mesothelioma cases in the area studied. However, because mesothelioma can take decades to emerge after asbestos exposure, the results of this clean-up effort may not be seen for decades.