News Articles

Stem cells, popularly known as a source of biological rejuvenation, may play harmful roles in the body, specifically in the growth and spread of cancer. Amongst the wildly dividing cells of a tumor, scientists have located cancer stem cells. Physician-scientists from Weill Cornell Medical College are studying these cells with hopes of combating malignant cancers in the brain.
"Some patients' brain tumors respond to chemotherapy and some don't," says Dr. John A. Boockvar, the Alvina and Willis Murphy Assistant Professor of Neurological Surgery and head of the Brain Tumor Research Group at NewYork-Presbyterian Hospital/Weill Cornell Medical Center. "We believe cancer stem cells may be the cause."

If you're going to experience a period of helplessness, it's best to be alone. New research at the University of Haifa found that laboratory rats that were on their own when exposed to uncontrollable conditions, which create a feeling of helplessness, learned to avoid situations which create such feelings better than rats that were exposed to uncontrollable conditions in pairs.
The way laboratory rats react to uncontrollable situations in which their behaviors have no influence on subsequent events has been researched in the past.

People who bake aren't fans of sugar substitutes. 'Equal' does well in hot things like coffee that just require absorption but, for the most part, sugar remains king in the oven.
Natur Research Foods Inc. announced that it has developed and is now distributing an all-natural sugar substitute, Natur Baker's Blend Natural Sweetener, for the purpose of baking.
According to their press release, it has 40 percent fewer calories than sugar and has been tested as low-glycemic. They say it bakes, rises, caramelizes, provides a crust and preserves similar to cane sugar.

A research team at Weill Cornell Medical College in New York City has identified two genes that may be crucial to the production of an immune system cytokine called interleukin-10 (IL-10).
The discovery fills in an important "missing link" in a biochemical pathway that's long been tied to disorders ranging from lupus and Type 1 diabetes, to cancer and AIDS.
"IL-10 production has to be kept in a delicate balance for health," explains study senior researcher Dr. Xiaojing Ma, Professor of Immunology and Microbiology in the Departments of Microbiology and Immunology and Pediatrics at Weill Cornell.

Most people wouldn’t consider anthrax toxin to be beneficial, but this bacterial poison may someday be an effective cancer therapy. Anthrax toxin has actually been shown to be fairly selective in targeting melanoma cells, although the risk of non-cancer toxicity prevents any clinical use.
To develop a better and safer treatment, Stephen Leppla and colleagues created a mutated antrax toxin that could only be turned on by matrix metalloproteinases (MMP), proteins that are overproduced only in cancer cells.
When they tested this mutated toxin in mice, the researchers observed that 100% of the animals tolerated a dose that would be lethal for the natural toxin.

As electronics designers cram more and more components onto each chip, current technologies for making random-access memory (RAM) are running out of room. European researchers have a strong position in a new technology known as resistive RAM (RRAM) that could soon be replacing flash RAM in USB drives and other portable gadgets.
On the ‘semiconductor road map’ setting out the future of the microchip industry, current memory technologies are nearing the end of the road. Future computers and electronic gadgets will need memory chips that are smaller, faster and cheaper than those of today –and that means going back to basics.
Today’s random-access memory (RAM) falls mainly into three classes: static RAM (SRAM), dynamic RAM (DRAM), and flash memory.

A new influenza virus discovered in Missouri pigs has a combination of genes from avian and swine flu viruses, supporting the theory that pigs can serve as a mixing vessel for flu viruses and a potential source for a human pandemic strain, according to a report published yesterday. Researchers found that the virus, an H2N3 subtype, caused illness in experimentally infected mice and was transmissible in swine and ferrets, suggesting it has adapted to mammals, according to the report, published in the Proceedings of the National Academy of Sciences (PNAS). In addition, genetic analysis showed the virus has a mutation linked with an increased ability to infect mammals. 

Highly publicized events such as school shootings arouse public interest in the effects of media violence exposure on children, yet there is still considerable public debate about whether to take this issue seriously.
A recent article in Social Issues and Policy Review summarizes the research on the effects of media violence and convincingly demonstrates the profound influence that media violence is having in our society.
The many studies that have been compiled on the effects of viewing media violence show that there are at least 14 scientifically documented effects on children’s physiological and psychological well-being, both in the short and long term.

According to a new survey, 52 percent of Americans plan to lose weight in 2008 but as January comes closer and marketing efforts promising quick and easy weight-loss solutions ratchet up, people are increasingly confused about what to believe.
When it comes to weight-loss products, people who plan to lose weight have considerable knowledge gaps, particularly with regard to appetite suppressants, herbal products and dietary supplements.
These products are not required by the Food and Drug Administration (FDA) to submit safety or efficacy studies, or to include warnings about potential side effects on their labels.

Chronic obstructive pulmonary disease (COPD) is the name given to two lung diseases that frequently co-exist, bronchitis and emphysema, characterized airflow obstruction that interferes with breathing. COPD is the fourth leading cause of death in America, claiming the lives of 122,283 Americans in 2003 and the number of women dying from the disease has surpassed the number seen in men.
Patients with severe COPD may benefit more from therapy that combines salmeterol and fluticasone [SFC] than treatment with tiotropium, according to results from a long-term, multi-center study, “Investigating New Standards for Prophylaxis in Reducing Exacerbations” (INSPIRE) that directly compared the two therapies.

Genome rearrangements, resulting in variations in the numbers of copies of genes, occur when the cellular process that copies DNA during cell division stalls and then switches to a different genetic “template,” said researchers at Baylor College of Medicine in Houston in a report that appears today in the journal Cell.
The new mechanism is called replication. “Fork Stalling and Template Switching,” said Dr. James R. Lupski, Cullen professor of molecular and human genetics and vice chair of the department at BCM. It not only represents a new way in which the genome generates DNA copy number variation, but it also demonstrates that copy number variation can occur at a different time point in the life of a cell. DNA replication takes place as the cell is dividing and becoming two.

Laser surgery to correct vision problems has been in use since the early 1990s. Photorefractive Keratotomy (PRK) is typically used to correct low to moderate myopia, while laser in-situ keratomileusis (LASIK) is preferred for high myopia corrections. Although over 18 million LASIK procedures have been performed worldwide, there is still some controversy regarding the maximum correction possible and efficacy with this technique.
In an article published in the January 2008 issue of the American Journal of Ophthalmology, researchers from Miguel Hernandez University, Medical School, Alicante, Spain; and Ankara University School of Medicine, Ankara, Turkey; report on a study of high myopia patients ten years after LASIK surgery.