Tag Archives: british

Immune system discovery could lead to vaccine to prevent mono, some cancers

EBV causes infectious mononucleosis and cancers such as Hodgkin’s lymphoma and nasopharyngeal carcinoma, which is the most common cancer in China, as well as opportunistic cancers in people with weakened immune systems. A member of the herpes virus family that remains in the body for life, the virus infects epithelial cells in the throat and immune cells called B cells. The researchers discovered that the virus triggers molecular events that turn off key proteins, making infected cells invisible to the natural killer T (NKT) immune cells that seek and destroy EBV-infected cells. "If you can force these invisible proteins to be expressed, then you can render infected cells visible to NKT cells, and defeat the virus. …

Clinical tool classifies spots on lung scans of smokers

The findings are expected to have immediate clinical impact worldwide among health professionals who currently diagnose and treat individuals at risk for or who are diagnosed with lung cancer, and provide new evidence for developing and improving lung-cancer screening programs. A total of 12,029 lung cancer nodules observed on CTs of 2,961 current and former smokers were examined in the population-based study. The results, to be published in the Sept. 5th issue of the New England Journal of Medicine (NEJM), will have an immediate impact on clinical practice, says co-principal investigator Dr. …

Chromosomal abnormalities may explain increased cancer risk in type 2 diabetes

Their work was published on July 14, 2013 on the Nature Genetics website. There are more than 200 million diabetics worldwide, and one in three suffer from vascular or nerve complications. In 2012, two studies published in Nature Genetics showed that large chromosomal clonal mosaic events (CMEs)(2) affecting large portions of chromosomes (or even their totality), could be observed in the DNA of blood or saliva cells from some ageing individuals. These studies also suggested that CMEs could predict the risk of cancer, and notably leukemia, in these individuals. …

Sugar makes cancer light-up in MRI scanners

The new technique, called ‘glucose chemical exchange saturation transfer’ (glucoCEST), is based on the fact that tumours consume much more glucose (a type of sugar) than normal, healthy tissues in order to sustain their growth. The researchers found that sensitising an MRI scanner to glucose uptake caused tumours to appear as bright images on MRI scans of mice. Lead researcher Dr Simon Walker-Samuel, from the UCL Centre for Advanced Biomedical Imaging (CABI) said: "GlucoCEST uses radio waves to magnetically label glucose in the body. This can then be detected in tumours using conventional MRI techniques…

Long term night shifts linked to doubling of breast cancer risk

Shift work has been suggested as a risk factor for breast cancer, but there has been some doubt about the strength of the findings, largely because of issues around the assessment of exposure and the failure to capture the diversity of shift work patterns. Several previous studies have also been confined to nurses rather than the general population. …