http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Scientists at the Salk Institute for Biological Studies have identified a protein that drives the formation of pituitary tumors in Cushing's disease, a development that may give clinicians a therapeutic target to treat this potentially life-threatening disorder. http://medicalxpress.com/news/2013-05-scientists-potential-therapeutic-cushing-disease.html Diseases, Conditions, Syndromes Tue, 07 May 2013 16:11:18 EST news287161860 (Medical Xpress)—Living organ­isms depend on pro­teins for their sur­vival. These large, com­plex mol­e­cules mediate nearly every life func­tion, but when the genes that code for them start to mutate, those func­tions begin to break down. http://medicalxpress.com/news/2013-01-protein-cancer-drug.html Cancer Tue, 08 Jan 2013 06:35:08 EST news276849299 Scientists at the University of Arizona Cancer Center and the Moffitt Cancer Center, led by Dr. Robert Gillies, have demonstrated that an advanced magnetic resonance imaging (MRI) method can non-invasively evaluate the cellular proliferation of tumor models of breast cancer. This quantitative imaging method evaluates the diffusion of water in tumor tissue, which correlates with the growth rates of the tumor models. The results, which appear in the November 2012 issue of Experimental Biology and Medicine, can contribute to the development of new tumor models for cancer research. http://medicalxpress.com/news/2012-12-cancer-advanced-biomedical-imaging-method.html Cancer Mon, 17 Dec 2012 12:34:16 EST news274970050 In the management of gliomas—or tumors that originate in the brain—precise assessment of tumor grade and the proliferative activity of cells plays a major role in determining the most appropriate treatment and predicting overall survival. Research published in the December issue of The Journal of Nuclear Medicine (JNM) highlights the potential of imaging with 3'-deoxy-3'-F-18-fluorothymidine (F-18-FLT) positron emission tomography (PET) to noninvasively and accurately provide tumor-specific details to guide management of patients with gliomas. http://medicalxpress.com/news/2012-12-pet-imaging-accurately-treatment-survival.html Cancer Mon, 03 Dec 2012 13:05:45 EST news273762333 (Medical Xpress)—Scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have identified tissue mechanisms that may influence a woman's susceptibility or resistance to breast cancer after exposure to low-dose ionizing radiation, such as the levels used in full-body CT scans and radiotherapy. http://medicalxpress.com/news/2012-10-ways-id-women-higher-breast.html Cancer Tue, 16 Oct 2012 06:45:32 EST news269588720 Germinal centers are sites in the organs of the lymphatic system, formed during the course of an immune response to infection, where B cells intensely proliferate and modify their DNA in order to produce antibodies specific for the pathogen. However, it is known that the vast majority of lymphomas derive from the B cells at the germinal centers. http://medicalxpress.com/news/2012-09-puzzle-b-cell-lymphoma.html Immunology Sun, 23 Sep 2012 13:00:08 EST news267602068 Scientists at Cold Spring Harbor Laboratory (CSHL) and Memorial Sloan-Kettering Cancer Center have amassed strong experimental evidence implying that commonly occurring large chromosomal deletions that are seen in many cancer types contain areas harboring multiple functionally linked genes whose loss, they posit, confers a survival advantage on growing tumors. http://medicalxpress.com/news/2012-05-clusters-cooperating-tumor-suppressor-genes-large.html Cancer Mon, 07 May 2012 15:00:12 EST news255613710 Celecoxib may emerge as a potent chemopreventive agent for lung cancer, according to a recent study in Cancer Prevention Research, a journal of the American Association for Cancer Research. http://medicalxpress.com/news/2011-07-celecoxib-lung-cancer-smokers.html Cancer Wed, 06 Jul 2011 03:11:22 EST news229140652 Damage to normal DNA is a hallmark of cancer cells. Although it had previously been known that damage to normal cells is caused by stress to their DNA replication when cancerous cells invade, the molecular basis for this remained unclear. http://medicalxpress.com/news/2011-05-dna-cancer-cells.html Cancer Tue, 03 May 2011 11:07:15 EST news223639620