http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Inhaling small amounts of hydrogen in addition to concentrated oxygen may help stem the damage to lung tissue that can occur when critically ill patients are given oxygen for long periods of time, according to a rat model study conducted by researchers in Pittsburgh. The study also found hydrogen initiates activation of heme-oxygenase (HO-1), an enzyme that protects lung cells. http://medicalxpress.com/news/2011-05-inhaling-hydrogen-lung-critically-ill.html Medical research Mon, 16 May 2011 16:29:00 EST news224782133 Intravenous administration of epoetin alfa, a product that stimulates red blood cell production, to patients with heart attack who were undergoing percutaneous coronary intervention (PCI; procedures such as balloon angioplasty or stent placement used to open narrowed coronary arteries), did not provide reduction in the size of the heart muscle involved and was associated with higher rates of adverse cardiovascular events, according to a study in the May 11 issue of JAMA. http://medicalxpress.com/news/2011-05-outcomes-erythropoietin-heart-patients-pci.html Medical research Tue, 10 May 2011 16:25:29 EST news224263508 (Medical Xpress) -- The gut may need bacteria to provide a little bit of oxidative stress to stay healthy, new research suggests. Probiotic bacteria promote healing of the intestinal lining in mice by inducing the production of reactive oxygen species, researchers at Emory University School of Medicine have shown. http://medicalxpress.com/news/2011-05-beneficial-bacteria-intestinal-injury-reactive.html Medical research Tue, 10 May 2011 15:07:00 EST news224258764