LA JOLLA, Calif., March 18, 2013 – Hormonal therapies can help control advanced prostate cancer for a time. However, for most men, at some point their prostate cancer eventually stops responding to further hormonal treatment. This stage of the disease is called androgen-insensitive or castration-resistant prostate cancer. In a study published March 18 in Cancer Cell, a team led by researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) found a mechanism at play in androgen-insensitive cells that enables them to survive treatment.
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Oral estrogen therapy for menopausal women is associated with an increased risk of gallbladder surgery, according to a large-scale study of more than 70 000 women in France published in CMAJ (Canadian Medical Association Journal)
Women who took estrogen therapy through skin patches or gels did not appear to be at increased risk.
Gallstone disease is common in developed countries, and women over age 50 are most at risk. Other risk factors include obesity, diabetes, high cholesterol, poor diet and having given birth to two or more children.
EUGENE, Ore. -- (March 18, 2013) -- University of Oregon chemists have synthesized organic molecular structures that move both positive and negative electrical charges -- a highly desired but often difficult combination to achieve in current efforts to create highly flexible electronic devices and other new-age technologies.
For years, scientists around the world have dreamed of building a complete, functional, artificial cell. Though this vision is still a distant blur on the horizon, many are making progress on various fronts. Prof. Roy Bar-Ziv and his research team in the Weizmann Institute's Material's and Interfaces Department recently took a significant step in this direction when they created a two-dimensional, cell-like system on a glass chip.
(Santa Barbara, Calif.) –– After almost four decades of absence from local waters, a special sea slug appears to be making a comeback, and marine scientists at UC Santa Barbara are eagerly anticipating its return.
Philadelphia, Pa. (March 18, 2013) – Abuse of the anesthesia drug propofol is a "rapidly progressive form of substance dependence" that is being more commonly seen among health care professionals, reports a study in the April Journal of Addiction Medicine, the official journal of the American Society of Addiction Medicine.
It is increasingly recognized that protected areas alone are not sufficient for successful biodiversity conservation, and that management of production areas (e.g. forestry and agricultural land) plays a crucial role in that respect. Retention forestry and agroforestry are two land management systems aiming to reconcile the production of human goods with biodiversity conservation.
A newly published article "Revision of the Afrotropical Mayrellinae (Cynipoidea, Liopteridae), with the first record of Paramblynotus from Madagascar" by Dr. Simon van Noort, from Natural History Department, Iziko South African Museum, and Dr. Matthew L. Buffington from the Systematic Entomology Lab, USDA offers the description of 9 remarkable new species of wasps.
ANN ARBOR, Mich. – Pediatricians regularly dispense advice to parents of young children during well-child visits, but a new University of Michigan poll shows that many aren't following doctors' orders.
Only one-third of parents (31 percent) said they follow advice from their child's health care provider all of the time, according to the most recent University of Michigan Mott Children's Hospital National Poll on Children's Health. Thirteen percent said they follow the provider's advice only occasionally.
Marine biologists have, for the first time, found a whale skeleton on the ocean floor near Antarctica, giving new insights into life in the sea depths. The discovery was made almost a mile below the surface in an undersea crater and includes the find of at least nine new species of deep-sea organisms thriving on the bones.
The research, involving the University of Southampton, Natural History Museum, British Antarctic Survey, National Oceanography Centre (NOC) and Oxford University, is published today in Deep-Sea Research II: Topical Studies in Oceanography.
Highly developed antennae containing different types of olfactory receptors allow insects to use minute amounts of odors for orientation towards resources like food, oviposition sites or mates. Scientists at the Max Planck Institute for Chemical Ecology in Jena, Germany, have now used mutant flies and for the first time provided experimental proof that the extremely sensitive olfactory system of fruit flies − they are able to detect a few thousand odor molecules per milliliter of air, whereas humans need hundreds of millions − is based on self-regulation of odorant receptors.
Researchers Robert Hoare (Landcare Research, New Zealand) and Erik van Nieukerken (Naturalis Biodiversity Center, Netherlands) have named new moths after the Minotaur of Greek mythology and the legendary Italian philanderer Giacomo Casanova in a study of the evolution of southern
In a small, preliminary study of regular migraine sufferers, scientists have found that measuring a fat-derived protein called adiponectin (ADP) before and after migraine treatment can accurately reveal which headache victims felt pain relief.
A report on the study of people experiencing two to 12 migraine headaches per month, led by researchers at Johns Hopkins, is published in the March issue of the journal Headache.
Washington, D.C.— It has long been believed that male lions are dependent on females when it comes to hunting. But new evidence suggests that male lions are, in fact, very successful hunters in their own right. A new report from a team including Carnegie's Scott Loarie and Greg Asner shows that male lions use dense savanna vegetation for ambush-style hunting in Africa. Their work is published in Animal Behavior.
Milan, 16 March 2013 - At the 28th Annual EAU Congress currently ongoing in Milan until Tuesday, W. Tan and colleagues presented their study on neoadjuvant cisplatin-based chemotherapy which showed that epigenetic changes are potential key drivers in the development of chemo resistance in bladder cancer.