Tag Archives: division

Live and let-7: microRNA plays surprising role in cell survival

Specifically, principal investigator Albert R. La Spada, MD, PhD, professor of cellular and molecular medicine, chief of the Division of Genetics in the Department of Pediatrics and associate director of the Institute for Genomic Medicine at UC San Diego, and colleagues found that a microRNA known as let-7 controls autophagy through the amino acid sensing pathway, which has emerged as the most potent activator of mTORC1 complex activity. Autophagy is a fundamental process used by cells to degrade unnecessary components in times of starvation, releasing energy stores that help promote cell survival…

Stochastic variations of migration speed between cells in clonal populations

A team of researchers at the Massachusetts General Hospital and Harvard Medical School in Boston has developed technologies for precision measurement of cell migration speed before and applied the new tool to study the variations of migration speed in population of cancer cells. This tool enabled comparisons between successive generations of cells with single cell resolution…

French studies measure benefits of colorectal cancer screening

Dr Vanessa Cottet from INSERM Unit� 866 in Dijon, France, and colleagues studied the region of C�te-d’Or, where a registry has been collecting data on adenomas since 1976. They wanted to evaluate the rate of diagnosis of adenomas before and after the initiation of a screening program using fecal occult blood testing that began in 2003…

Certain form of baldness at age 45 linked to higher risk for aggressive prostate cancer

“Our study found an increased risk for aggressive prostate cancer only in men with a very specific pattern of hair loss, baldness at the front and moderate hair-thinning on the crown of the head, at the age of 45. But we saw no increased risk for any form of prostate cancer in men with other hair-loss patterns,” said senior study author Michael B. Cook, PhD, an investigator in the Division of Cancer Epidemiology and Genetics at the National Cancer Institute in Bethesda, MD…

Skin cancer risks higher for soldiers serving abroad

In a retrospective study of about 200 veterans seen at the post-deployment clinic of the Tennessee Valley Healthcare System of the U.S. Department of Veterans Affairs, researchers from Vanderbilt University Medical Center and the Tennessee Valley Healthcare System found that 62 percent of military personnel reported getting sunburned while deployed abroad, including cases of skin blistering. In addition, 29 percent noted a change in the color, shape or size of their moles (a skin cancer risk factor) since being deployed to tropical zones, but only 4 percent reported receiving a skin examination from a physician since deployment…

No association found between wearing bra, breast cancer

“There have been some concerns that one of the reasons why breast cancer may be more common in developed countries compared with developing countries is differences in bra-wearing patterns,” said Lu Chen, MPH, a researcher in the Public Health Sciences Division at Fred Hutchinson Cancer Research Center and a doctoral student in the Department of Epidemiology at the University of Washington School of Public Health. …

Study identifies gene network behind untreatable leukemia, possible treatment target

Scientists from the Cancer and Blood Diseases Institute (CBDI) at Cincinnati Children’s Hospital Medical Center report their results in a study posted online Sept. 4 by Cell Reports. The specific forms of AML and MDS in the current study involve deletions on the arm of a specific chromosome in blood cells (del(5q)…

Ovarian cancer: Know your body, know your risk — ScienceDaily

“There is no effective surveillance technique for the detection of early stage ovarian cancer, so the only effective way to prevent it and save lives is to identify women at risk,” said David A. Fishman, MD, Director of the Mount Sinai Ovarian Cancer Risk Assessment Program and Professor and Fellowship Director in the Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Medicine at the Icahn School of Medicine at Mount Sinai. He recommends that women with a family history of ovarian and breast cancers get a formal genetic evaluation by a board-certified genetic counselor. For women who have tested positive for a BRCA mutation or are identified to be at a high risk for developing ovarian cancer, preventive surgery should be considered to remove the ovaries and fallopian tubes before ovarian cancer can develop. …