Study finds radiation therapy for prostate cancer nearly doubles risk for rectal cancer
...he risk of developing cancer may be reduced by the evolution of radiation delivery techniques. However, researchers say that even with today's technology, some portions of the rectum still receive a high dose of radiation. Therefore, the risk of rectal cancer may still exist and thus, until proven otherwise, m...Radiation therapy for prostate cancer nearly doubles the risk of rectal cancer
...he risk of developing cancer may be reduced by the evolution of radiation delivery techniques. However, researchers say that even with today's technology, some portions of the rectum might still receive a high dose of radiation. Therefore, the risk of rectal cancer may still be substantial and thus, until pr...Children do well with shorter fast before surgery
...ports relaxed fasting standards, "kick-starting an evolution in fasting policies remains a difficult task," Brady says. She notes that some hospitals still require patients to eat or drink nothing after midnight the day of surgery, a "practice that should no longer be tolerated," she says. "Most children can s...Human eggs can develop from ovarian surface cells in vitro
...esent a sophisticated mechanism created during the evolution of female reproduction, and not seen in ovaries of female prosimians (ancestral primates) or mice carrying germline stem cells. The ability to produce mature human eggs from adult ovaries in vitro has several potential applications in human reprodu...High blood pressure causes pathological scars in the heart
...ation) is the determinant lesion in the subsequent evolution of the heart in a patient with high blood pressure. This item appeared in the latest edition of Nature Clinical Practice Cardiovascular Medicine , a journal that is part of the Nature group. The article published heart research recently carried ou...Variations in four inflammatory genes may predispose Mexican Americans to insulin resistance
...ections of the gene that have remained unbroken by evolution over time. Consequently, haplotypes are more likely to identify disease associations than single gene variations. The researchers found that insulin resistance was associated with the fourth most common haplotype of the IL4 gene and the most common...Parasite genome sequences offer hope for new drugs and vaccines, Science studies say
...rch provides a detailed roadmap of the biology and evolution of these unicellular organisms, or "protozoa," from the family Trypanosomatidae, which parasitize humans and other mammals, birds, reptiles, fish, insects and plants. Insects transmit these disease-causing parasites to humans living in tropical and s...New technology shows our ancestors ateeverything!
...eaford, Ph.D., professor of functional anatomy and evolution at the Johns Hopkins School of Medicine. The new approach to studying dental microwear, the microscopic pits and scratches on the tooth surface caused by use, offers a more accurate measurement of the surface's appearance and is described in the Augu...Percutaneous aortic valve replacement
...as been related to non valvular causes, mainly the evolution of life-threatening comorbidities. Challenges remain as the procedure is complex when performed via the antegrade/transseptal route, whereas the less demanding retrograde route has been frequently associated with failures in crossing the native valv...Massachusetts General Hospital launches magazine that examines medicine's leading edge
... Time Inc. deputy managing editor, calls Proto "an evolution in communicating to the sophisticated reader" through its blending of intellectual rigor, lively writing and powerful photography and graphics. "As one of the nation's leading academic medical centers, Mass General offers an important critical lens ...Autoimmune overload may damage HIV-infected brain
Researchers studying the evolution of the human immunodeficiency virus (HIV) in the brain have found that the body's own defenses may cause HIV-related dementia. Publishing in the Sept. 2005 issue of the Journal of Virology, the researchers show that HIV in the temporal lobe mutates ...New book explains age-old mystery of geometrical illusions
...ulus features, but a "statistical engine" wired by evolution and a person's experience to make the best statistical guess about objects in a visual scene, based on how successful those guesses have been in the past. "So, vision is not about extracting features from a scene; it's about extracting statistics in ...Genomes of more than 200 human flu strains reveal a dynamic virus
..., giving researchers an unbiased view of flu virus evolution as it moved through a varied human population. Although the viruses were drawn from a relatively small region, the researchers discovered a surprisingly large degree of genetic diversity in the sequences. They learned, for example, that three genetic...Old mystery solved, revealing origin of regulatory T cells that 'police' and protect the body
...gy. "It is a very smart system that evolved during evolution to efficiently keep the immune system in check." The thymus functions like a school to educate immature immune system "T" (for thymus) cells. T cells are white blood cells that play vital roles in the immune system, including the identification of sp...Young cancer researchers honored
...s. "These models have allowed us to understand the evolution of cancer C how it progresses and responds to therapy," said Dr. Lowe. One particular area of his research has been using these models to make sense of apoptosis and senescence so that these processes can be restored to cancer cells, thus allowing tr...Stanford study of sea squirt provides clue to human immune system
...ions of the finding may shed light not only on the evolution of our immune system, but also on how we might better control some aspects of it, such as our natural killer cells. "If you could teach those natural killer cells to be tolerant, you could transplant bone marrow between any two people, a huge first s...New technology may help radiologists find more breast cancers
...improving interpretation," he said. "It is both an evolution of mammography technology and revolutionary new technology." Dr. Poplack expects that tomosynthesis, which is currently in the research phase, will be routinely be used in both screening and diagnostic mammography at major medical centers in the next...New studies identify advances in treatment of chronic myeloid leukemia
...ly associated with BCR-ABL mutations and/or clonal evolution the development of chromosomal mutations that occurs in untreated CML and leads to progression of the disease. A previous phase I, dose-escalating study provided early evidence for the safety and efficacy of dasatinib in imatinib-resistant or intol...UCSD team creates model for genetic brain syndrome
...one of the most complex structures we know of, and evolution has been working hard to make the human brain over the past million years. It is not surprising that the human brain is more susceptible to genetic variation than the brain of a laboratory mouse."......esearchers generate a "gold mine" of data to track evolution of bird flu virus genes and understand how they co...ies provide the first fundamental insight into the evolution of influenza viruses in nature--the source of all influenza viruses that affect humans, domestic ani...