http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Exosomes are small, virus-like particles that can transport genetic material and signal substances between cells. Researchers at Lund University, Sweden, have made new findings about exosomes released from aggressive brain tumors, gliomas. These exosomes are shown to have an important function in brain tumor development, and could be utilized as biomarkers to assess tumor aggressiveness through a blood test. http://medicalxpress.com/news/2013-04-virus-like-particles-vital-clues-brain.html Medical research Wed, 17 Apr 2013 10:18:15 EST news285412653 February 15, 2013 – Doctors currently struggle to determine whether a breast tumor is likely to shift into an aggressive, life-threatening mode—an issue with profound implications for treatment. Now a group from The Scripps Research Institute (TSRI) has identified a mechanism through which mitochondria, the powerhouses of a cell, control tumor aggressiveness. Based on their findings, the team developed a simple treatment that inhibits cancer progression and prolongs life when tested in mice. http://medicalxpress.com/news/2013-02-scientists-approach-breast-cancer.html Cancer Fri, 15 Feb 2013 13:07:50 EST news280156049 Breast cancer is the second leading cause of cancer deaths among women in the United States. Many of these deaths occur when there is an initial diagnosis of invasive or metastatic disease. A protein called NEDD9—which regulates cell migration, division and survival—has been linked to tumor invasion and metastasis in a variety of cancers. Researchers at Fox Chase Cancer Center have now shown that NEDD9 plays a surprising role in the early stages of breast tumor development by controlling the growth of progenitor cells that give rise to tumors. The findings, published in the journal Oncogene on January 14, 2013, could lead to personalized treatment strategies for women with breast cancer based on the levels of NEDD9 in their tumors. http://medicalxpress.com/news/2013-01-role-nedd9-gene-early-stages.html Cancer Mon, 14 Jan 2013 13:08:36 EST news277391310 Racial and ethnic disparities in breast tumor aggressiveness might be explained by social factors that influence the developing tumor and place those in disadvantaged groups at higher risk for aggressive breast cancer, according to data presented at the Fifth AACR Conference on The Science of Cancer Health Disparities, held here Oct. 27-30, 2012. http://medicalxpress.com/news/2012-10-socioeconomic-disadvantage-linked-breast-cancer.html Cancer Tue, 30 Oct 2012 06:30:45 EST news270797388 Blood hormone tests can predict a woman's risk for developing postmenopausal breast cancer for up to 20 years, according to a study led by Xuehong Zhang, MD, Channing Division of Network Medicine, Brigham and Women's Hospital (BWH) Department of Medicine. http://medicalxpress.com/news/2012-10-blood-hormone-long-term-breast-cancer.html Cancer Thu, 18 Oct 2012 15:00:01 EST news269786031 Psychosocial stress could play a role in the etiology of breast cancer aggressiveness, particularly among minority populations, according to study results presented at the Fourth AACR Conference on The Science of Cancer Health Disparities, held here from Sept. 18-21, 2011. http://medicalxpress.com/news/2011-09-association-stress-breast-cancer-aggressiveness.html Cancer Mon, 19 Sep 2011 14:14:33 EST news235660461 Women with breasts that appear dense on mammograms are at a higher risk of breast cancer and their tumors are more likely to have certain aggressive characteristics than women with less dense breasts, according to a study published online July 27 in the Journal of the National Cancer Institute. http://medicalxpress.com/news/2011-07-breast-density-tied-specific-cancer.html Cancer Wed, 27 Jul 2011 16:30:01 EST news231002186