http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. As success rates in treating childhood cancers have improved, greater emphasis is being placed on quality of life issues following successful treatment. Many cancer treatments can lead to infertility, but there are few methods to preserve the fertility of children who have not entered puberty. http://medicalxpress.com/news/2013-03-fertility-childhood-cancer.html Cancer Fri, 15 Mar 2013 12:22:55 EST news282568968 A father's obesity is one factor that may influence his children's health and potentially raise their risk for diseases like cancer, according to new research from Duke Medicine. http://medicalxpress.com/news/2013-02-paternal-obesity-impacts-child-chances.html Overweight and Obesity Tue, 05 Feb 2013 19:00:04 EST news279307201 The notion that police can identify a suspect based on the tiniest drop of blood or trace of tissue has long been a staple of TV dramas, but scientists at Harvard have taken the idea a step further. Using just a single human cell, they can reproduce an individual's entire genome. http://medicalxpress.com/news/2013-01-cell-technique-sequence-entire-genome.html Genetics Mon, 07 Jan 2013 07:39:09 EST news276766740 For more than 40 years, Bisphenol A, more commonly known as BPA, was used in everything from plastic baby bottles and the lining of metal food containers to dental sealants. When scientists began seeing a connection between BPA and abnormal sperm and egg development, it set off worldwide public health concerns. http://medicalxpress.com/news/2012-12-scientists-toxicant-tool-links-abnormal.html Health Fri, 07 Dec 2012 10:05:48 EST news274097128 Scientists at the Babraham Institute have gained a new understanding of when and how the DNA in developing egg and sperm cells is 'reset', in preparation for making a new embryo. It is well known that small chemical groups can be added to DNA to alter gene activity, these modifications to the DNA are acquired during development in the womb and throughout adult life and can arise from changes in environment. Most of these modifications are removed in immature egg and sperm cells to 'reset' the DNA and to erase any 'environmental memory', but some remain. Decoding this reprogramming has major implications for our understanding of development and how these modifications can be inherited from one generation to another. http://medicalxpress.com/news/2012-12-insight-dna-reprogramming-egg-sperm.html Genetics Thu, 06 Dec 2012 12:00:12 EST news274016479 Ovarian cancer is a deadly disease. With no overt symptoms and no screening tests to catch it early, ovarian cancer is often detected at stage 3 or later. By then, it can be very aggressive and may have spread beyond the ovaries into other organs. Many women eventually succumb to it; the five-year survival rate for a stage 3 ovarian cancer diagnosis is only 34 percent. http://medicalxpress.com/news/2012-10-unm-cancer-center-genetic-markers.html Cancer Tue, 23 Oct 2012 14:36:16 EST news270221716 A study in mice conducted by researchers at Tufts University School of Medicine (TUSM) suggests that a woman's risk of anxiety and dysfunctional social behavior may depend on the experiences of her parents, particularly fathers, when they were young. The study, published online in Biological Psychiatry, suggests that stress caused by chronic social instability during youth contributes to epigenetic changes in sperm cells that can lead to psychiatric disorders in female offspring across multiple generations. http://medicalxpress.com/news/2012-08-male-mice-exposed-chronic-social.html Psychology & Psychiatry Wed, 22 Aug 2012 11:12:50 EST news264852763 Scientists at the Universities of Birmingham and Warwick have shed new light on how sperm navigate the female reproductive tract, 'crawling' along the channel walls and swimming around corners; with frequent collisions. http://medicalxpress.com/news/2012-05-sperm-collide-egg.html Medical research Mon, 07 May 2012 15:00:04 EST news255606752 (HealthDay) -- Sperm with higher motility have increased mitochondrial respiratory capacity, according to a study published in the April issue of Urology. http://medicalxpress.com/news/2012-04-mitochondrial-respiratory-capacity-sperm-motility.html Other Tue, 10 Apr 2012 15:40:01 EST news253286549 Who knew that male fertility depends on sperm-cell architecture? A University of Illinois study reports that a certain omega-3 fatty acid is necessary to construct the arch that turns a round, immature sperm cell into a pointy-headed super swimmer with an extra long tail. http://medicalxpress.com/news/2012-01-scientists-link-dietary-dha-male.html Health Mon, 09 Jan 2012 16:31:05 EST news245349044 Melissa Perry, Sc.D., M.H.S., professor and chair of the Department of Environmental and Occupational Health at the GW School of Public Health and Health Services and adjunct associate professor at the Harvard School of Public Health, led an observational study indicating that environmental exposure to organochlorine chemicals, including Polychlorinated Biphenyls (PCBs) and p,p'-DDE (the main metabolite of the insecticide DDT) can affect male reproduction. The research was published online on Dec. 21, 2011 in the journal Environmental Health Perspectives. http://medicalxpress.com/news/2012-01-environmental-exposure-organochlorines-impact-male.html Health Mon, 09 Jan 2012 12:47:56 EST news245335666 Performance anxiety? Not for this human sperm. http://medicalxpress.com/news/2011-12-scientists-electrical-currents-male-fertility.html Medical research Thu, 29 Dec 2011 09:44:40 EST news244374244 A Ben-Gurion University of the Negev researcher has achieved a significant breakthrough in male fertility, producing normal sperm from mouse cells. http://medicalxpress.com/news/2011-11-male-fertility-breakthrough.html Medical research Tue, 15 Nov 2011 11:08:27 EST news240577700