Body

Any number of things can go wrong in the cells of the body to cause cancer -- and clinicians can't tell by just looking at a tumor what exactly triggered the once normal cells to turn cancerous.

New tests developed by researchers at Duke University can determine the precise patterns among thousands of genes to identify the cascade of events, or pathways, that led to the cancer.

Malignant melanoma is one of the deadliest forms of skin cancer. Nearly 60,000 new cases of melanoma are expected in 2007, and 8,100 deaths are expected to occur.

Higher levels of a protein called S-100 in patients with melanoma may correlate with a higher risk of having the disease return, say researchers at the University of Pittsburgh Cancer Institute.

In the first scientific study of its kind, shark cartilage extract, AE-941 or Neovastat, has shown no benefit as a therapeutic agent when combined with chemotherapy and radiation for patients with advanced non-small cell lung cancer, according to researchers at The University of Texas M. D. Anderson Cancer Center.

A unique examination of one treatment center’s use of magnetic resonance imaging (MRI) in new breast cancer patients has found MRI to be superior to mammography in finding additional tumors in a breast in which cancer has already been diagnosed, and in detecting new tumors in a patient’s supposedly healthy breast.

Rats with erectile dysfunction, or ED, that were injected with a gene therapy vector containing either of two nerve growth factors were able to regain normal function after four weeks, according to a study conducted by University of Pittsburgh School of Medicine researchers.

Last year, a groundbreaking international project found that a group of Japanese patients with advanced non-small cell lung cancer survived longer —and had a higher rate of side effects — than U.S. patients with the same diagnosis,.when both groups were given two well-known drugs for the disease.

Flaxseed, an edible seed that is rich in omega 3-fatty acids and fiber-related compounds known as lignans, is effective in halting prostate tumor growth, according to a study led by Duke University Medical Center researchers. The seed, which is similar to a sesame seed, may be able to interrupt the chain of events that leads cells to divide irregularly and become cancerous.

Researchers at the University of California, Santa Cruz, have performed atomic spectroscopy with integrated optics on a chip for the first time, guiding a beam of light through a rubidium vapor cell integrated into a semiconductor chip.

Aspirin didn’t pan out. Neither did two other potential anti-aging agents. But a synthetic derivative of a pungent desert shrub is now a front- runner in ongoing animal experiments to find out if certain chemicals, known to inhibit inflammation, cancer and other destructive processes, can boost the odds of living longer.

The doctoral thesis Potencial terapéutico de nuevos fármacos antitumorales. Estudio sobre líneas celulares epiteliales (Therapeutic Potential of New Antitumor Drugs. A Study on Epithelial Cell Lines) has allowed for the development of six new drugs to fight colon and breast cancer more effectively than other currently used drugs.

A new test for diagnosing Tuberculosis offers a quick and simple alternative to existing three-day methods, according to research published today in the journal Clinical Infectious Diseases.

The study shows that the test, which involves taking three sputum samples from a patient over the course of one day, is just as effective as other more invasive and complicated testing methods, which take three days.

The wild tiger now occupies a mere 7 percent of its historic range, and the area known to be inhabited by tigers has declined by 41 percent over the past decade, according to an article published in the June 2007 issue of BioScience.

Scientists have captured on video the intracellular version of a postal delivery service. Reporting in the journal Biochemical and Biophysical Research Communications (BBRC), bioengineering researchers at UC San Diego published videos of a key message-carrying protein called paxillin moving abruptly from hubs of communication and transportation activity on the cell surface toward the nucleus.

The science has long been clear that smoking causes cancer, but new research shows that children could inherit genetic damage from a father who smokes.

Canadian researchers have demonstrated in mice that smoking can cause changes in the DNA sequence of sperm cells, alterations that could potentially be inherited by offspring.

Researchers exploring the notion that certain nutrients might protect against pancreatic cancer found that lean individuals who got most of these nutrients from food were protected against developing cancer. The study also suggests this protective effect does not hold true if the nutrients come from vitamin supplements.