http://medicineworld.org/ Medicineworld.Org new article alert: We add several informative articles to our website every week. This feed alerts you to the newly added articles at our website. Fri, 03 Jul 2009 04:01:24 GMT en-us http://medicineworld.org/images/new-article.jpg http://medicineworld.org/ 107 71 http://medicineworld.org/stories/lead/7-2009/how-tamoxifen-stimulates-uterine-cell-growth.html http://medicineworld.org/stories/lead/7-2009/how-tamoxifen-stimulates-uterine-cell-growth.html Fri, 03 Jul 2009 04:01:24 GMT UCSF scientists have identified a new "feed-forward" pathway linking estrogen receptors in the membrane of the uterus to a process that increases local estrogen levels and promotes cell growth. The research is significant in helping determine why tamoxifen and other synthetic estrogens are associated with increased rates of endometriosis and uterine cancer, and identifies a pathway that could be targeted in drug therapies for those diseases, scientists say........ ]]> http://medicineworld.org/stories/lead/6-2009/remembering-what-to-remember.html http://medicineworld.org/stories/lead/6-2009/remembering-what-to-remember.html Fri, 03 Jul 2009 04:01:24 GMT People in very early stages of Alzheimer's disease already have trouble focusing on what is important to remember, a UCLA psychology expert and his colleagues report. "One of the first telltale signs of Alzheimer's disease appears to be not memory problems, but failure to control attention," said Alan Castel, UCLA assistant professor of psychology and main author of the study........ ]]> http://medicineworld.org/stories/lead/6-2009/big-tobacco-dead-by-2047.html http://medicineworld.org/stories/lead/6-2009/big-tobacco-dead-by-2047.html Fri, 03 Jul 2009 04:01:24 GMT President Barack Obama's signature on a bill this week to grant the Food and Drug Administration (FDA) regulatory authority over tobacco was historic, and represents a step in the march to eliminate tobacco use in this country by 2047, two national tobacco experts said today (June 25). The pair published "Stealing a March in the 21st Century: Accelerating Progress in the 100-Year War Against Tobacco Addiction in the United States" in the recent issue of the American Journal of Public Health Michael Fiore and Timothy Baker, director and associate director of the University of Wisconsin-Madison Center for Tobacco Research and Intervention (UW-CTRI), respectively, chart milestones in beating tobacco addiction and map a battle plan to eradicate tobacco use in the next few decades. The scientists analyzed data from the 1960s, when the first systemic tracking of smoking rates began, until the present........ ]]> http://medicineworld.org/stories/lead/6-2009/selenium-intake-may-worsen-prostate-cancer.html http://medicineworld.org/stories/lead/6-2009/selenium-intake-may-worsen-prostate-cancer.html Fri, 03 Jul 2009 04:01:24 GMT Higher selenium levels in the blood may worsen prostate cancer in some men who already have the disease, as per a research studyby scientists at Dana-Farber Cancer Institute the University of California, San Francisco. A higher risk of more-aggressive prostate cancer was seen in men with a certain genetic variant found in about 75 percent of the patients with prostate cancer in the study. In those subjects, having a high level of selenium in the blood was linked to a two hundred percent greater risk of poorer outcomes than men with the lowest amounts of selenium. By contrast, the 25 percent of men with a different variant of the same gene and who had high selenium levels were at 40 percent lower risk of aggressive disease. The variants are slightly different forms of a gene that instructs cells to make manganese superoxide dismutase (SOD2), an enzyme that protects the body against harmful oxygen compounds........ ]]> http://medicineworld.org/stories/lead/6-2009/more-gene-mutations-linked-to-autism-risk.html http://medicineworld.org/stories/lead/6-2009/more-gene-mutations-linked-to-autism-risk.html Fri, 03 Jul 2009 04:01:24 GMT More pieces in the complex autism inheritance puzzle are emerging in the latest study from a research team including geneticists from The Children's Hospital of Philadelphia, the University of Pennsylvania School of Medicine and several collaborating institutions. This study identified 27 different genetic regions where rare copy number variations missing or extra copies of DNA segments were found in the genes of children with autism spectrum disorders (ASDs), but not in the healthy controls. The complex combination of multiple genetic duplications and deletions is thought to interfere with gene function, which can disrupt the production of proteins necessary for normal neurological development........ ]]> http://medicineworld.org/stories/lead/6-2009/mri-for-imaging-breast-cancer.html http://medicineworld.org/stories/lead/6-2009/mri-for-imaging-breast-cancer.html Fri, 03 Jul 2009 04:01:24 GMT Reviewing the records of 577 patients with breast cancer, Fox Chase Cancer Center scientists observed that women with newly diagnosed breast cancer who receive a breast MRI are more likely to receive a mastectomy after their diagnosis and may face delays in starting therapy. The study demonstrates that, despite the lack of evidence of their benefit, routine use of MRI scans in women newly diagnosed with breast cancer increased significantly between 2004 and 2005, and again in 2006........ ]]> http://medicineworld.org/stories/lead/6-2009/underweight-and-extremely-obese-die-earlier.html http://medicineworld.org/stories/lead/6-2009/underweight-and-extremely-obese-die-earlier.html Fri, 03 Jul 2009 04:01:24 GMT Underweight people and those who are extremely obese die earlier than people of normal weightbut those who are overweight actually live longer than people of normal weight. Those are the findings of a newly released study published online in Obesity by scientists at Statistics Canada, Kaiser Permanente Center for Health Research, Portland State University, Oregon Health and Science University, and McGill University........ ]]> http://medicineworld.org/stories/lead/6-2009/new-therapy-to-prevent-heart-failure.html http://medicineworld.org/stories/lead/6-2009/new-therapy-to-prevent-heart-failure.html Fri, 03 Jul 2009 04:01:24 GMT A landmark study has successfully demonstrated a 29 percent reduction in heart failure or death in patients with heart disease who received an implanted cardiac resynchronization treatment device with defibrillator (CRT-D) versus patients who received only an implanted cardiac defibrillator (ICD-only)........ ]]> http://medicineworld.org/stories/lead/6-2009/morning-people-and-night-owls.html http://medicineworld.org/stories/lead/6-2009/morning-people-and-night-owls.html Fri, 03 Jul 2009 04:01:24 GMT Are you a "morning person" or a "night owl?". Researchers at the University of Alberta have observed that there are significant differences in the way our brains function depending on whether we're early risers or night owls. Neuroresearchers in the Faculty of Physical Education and Recreation looked at two groups of people: those who wake up early and feel most productive in the morning, and those who were identified as evening people, those who typically felt livelier at night. Study participants were initially grouped after completing a standardized questionnaire about their habits........ ]]> http://medicineworld.org/stories/lead/6-2009/dramatic-outcomes-in-prostate-cancer-study.html http://medicineworld.org/stories/lead/6-2009/dramatic-outcomes-in-prostate-cancer-study.html Fri, 03 Jul 2009 04:01:24 GMT Two Mayo Clinic patients whose prostate cancer had been considered inoperable are now cancer free thanks in part to an experimental drug treatment that was used in combination with standardized hormone therapy and radiation treatment. The men were participating in a clinical trial of an immunotherapeutic agent called MDX-010 or ipilimumab. In these two cases, physicians say the approach initiated the death of a majority of cancer cells and caused the tumors to shrink dramatically, allowing surgery. In both cases, the aggressive tumors had grown well beyond the prostate into the abdominal areas........ ]]> http://medicineworld.org/stories/lead/6-2009/combined-antiviral-and-targeted-chemotherapy.html http://medicineworld.org/stories/lead/6-2009/combined-antiviral-and-targeted-chemotherapy.html Fri, 03 Jul 2009 04:01:24 GMT A discovery by a team of Canadian and American scientists could provide new ways to fight HIV-AIDS. As per a newly released study published in Nature Medicine, HIV-AIDS could be treated through a combination of targeted chemotherapy and current Highly Active Retroviral (HAART) therapys. This radical new treatment would make it possible to destroy both the viruses circulating in the body as well as those playing hide-and-seek in immune system cells........ ]]> http://medicineworld.org/stories/lead/6-2009/how-obesity-increases-the-risk-for-diabetes.html http://medicineworld.org/stories/lead/6-2009/how-obesity-increases-the-risk-for-diabetes.html Fri, 03 Jul 2009 04:01:24 GMT Obesity is probably the most important factor in the development of insulin resistance, but science's understanding of the chain of events is still spotty. Now, scientists at the Salk Institute for Biological Studies have filled in the gap and identified the missing link between the two. Their findings, to be reported in the June 21, 2009 advance online edition of the journal Nature, explain how obesity sets the stage for diabetes and why thin people can become insulin-resistant........ ]]> http://medicineworld.org/stories/lead/6-2009/statins-dont-lower-risk-of-pneumonia.html http://medicineworld.org/stories/lead/6-2009/statins-dont-lower-risk-of-pneumonia.html Fri, 03 Jul 2009 04:01:24 GMT Taking popular cholesterol-lowering statin drugs, such as Lipitor (atorvastatin), does not lower the risk of pneumonia. That's the new finding from a study of more than 3,000 Group Health patients published online on June 16 in advance of the British Medical Journal's June 20 print issue. "Previous research based on automated claims data had raised some hopeand maybe some hypefor statins as a way to prevent and treat infections including pneumonia," said Sascha Dublin, MD, PhD, a doctor at Group Health and assistant investigator at Group Health Center for Health Studies. "But when we used medical records to get more detailed information about patients, our findings didn't support that approach"........ ]]> http://medicineworld.org/stories/lead/6-2009/predicting-fatal-fungal-infections.html http://medicineworld.org/stories/lead/6-2009/predicting-fatal-fungal-infections.html Fri, 03 Jul 2009 04:01:24 GMT As per a research findings published in The Journal of Infectious Diseases, scientists from Albert Einstein College of Medicine of Yeshiva University have identified cells in blood that predict which HIV-positive individuals are most likely to develop deadly fungal meningitis, a major cause of HIV-related death. This form of meningitis affects more than 900,000 HIV-infected people globally-most of them in sub-Saharan Africa and other areas of the world where antiretroviral treatment for HIV is not available........ ]]> http://medicineworld.org/stories/lead/6-2009/spread-of-aggressive-breast-cancer.html http://medicineworld.org/stories/lead/6-2009/spread-of-aggressive-breast-cancer.html Fri, 03 Jul 2009 04:01:24 GMT A low cellular level of a tiny fragment of RNA appears to increase the spread of breast cancer in mouse models of the disease, as per scientists at Whitehead Institute for Biomedical Research. Measuring levels of this so-called microRNA, which is also linked to metastatic breast cancer in humans, may more accurately predict the likelihood of metastasis (which accounts for 90% of cancer-related deaths) and ultimately help determine patient prognoses........ ]]>