Diabetic damage to eyes, heart, nerves, kidneys may be explained by controversial theory
...amson explains. Scientists have known for some time that diabetes increases transformation of NAD...g glucose into it for five hours or so, you'll see some of the same changes in the blood vessels that you see very early on in diabetics," Williamson notes....Scientists closing in on nerve proteins' contributions to memory and hearing loss
...the course of evolution, it suggests that part has some very important contributions to make." Scientists knew that stimulation of a nerve cell causes Nrg-ECD to break off. In a previous experiment, Bao and colleagues at Columbia University found that stimulation of nerve cells in mice ears let Nrg-...'Broken' gene reveals evolution of salt retention and possible ties to hypertension
...round the world. The mutation was least common in some natives of sub-Saharan Africa, ranging from a low of only six percent of Yorubans in Nigeria (Latitude 8N) to 31 percent among the Mandenka of Senegal (12N). Rates were higher among populations in East Asia, ranging from 55 percent among the Dai of ...Hurricane damage creates pecan shortage
...ing trees," said Brenneman. "There's evidence that some trees may not fully recover," he said. Many farmers have tried to save the injured trees by using tractors to pull the trees straight and remove damaged limbs. Pecan trees take many years to get into full production. The stress on damaged trees may ...Findings challenge Darwinian theory
...tarted. It's a clear example of how environment in some sense causes difference in form," Dr. Palmer said....d the genes follow." These observations have some parallels with modern medical research, Palmer said. "You can't say all diseases are gene-based. Con...New AAAS report cites 'serious concerns' with electronic voting
...et-based voting system, the panelists said. "In some instances, voting, and all of the procedures associated with it, have proceeded without a hitch," the report says. "In other cases, there have been accusations of tampering and fraud, and litigation challenging the accuracy and reliability of the vot...Gimli gobblers Mercury scientists to conduct unique human experiment next week
...uspect there is something different in the food in some communities and that this is preventing individuals from absorbing mercury," says Dr. Lucotte. That something, the researchers suspect, could be simply old fashioned tea. Tea-drinking Japanese communities known to be exposed to high levels of mercury...DASH diet may do more than lower blood pressure
...is unclear; however, they may help protect against some cancers, heart disease, and other chronic health conditions. In addition to consumption of fruits, vegetables and whole grains, the DASH diet advises people to consume low-fat and fat-free dairy foods and lean meat, poultry and fish....Sick kids researchers unmask the potential of stem cells found in adult skin
...ls generate other tissues such as bone, cartilage, some types of muscle, and even part of the heart. This research was conducted in mice, with similar findings made recently by Dr. Miller's group in the human cells. "The cells that Dr. Miller's group has found in the skin have huge potential to treat br...Fat buildup found in hearts of obese or diabetic heart failure patients
...riglycerides, Sharma said. Lipotoxic hearts store some triglycerides in the muscle tissue rather than metabolizing them. In obese people, Taegtmeyer and his team theorize that this occurs because the person's fat cells, which capture and store excess triglycerides, fill up. Because people have a set numb...Ethical paradigm: Relating embryonic stem cell use to organ donation
...al defects. These embryos, however, often contain some normal cells that, while unable to create a fully formed human, can be donated for use. The arguments defined by Landry and Zucker are laid out with historical background both on the history of organ donation and in vitro fertilization. The comment...Gene found to defend against environmental pollutants and pulmonary emphysema
...ld lead to the identification of what factors make some people more susceptible to lung diseases. The article is published in the current issue of The Journal of Clinical Investigation. The so-called "master gene"--nuclear factor erythroid-derived 2-related factor 2 (Nrf2)--is activated in response to env...Are museum collections of ancient life representative?
...ring time periods and fossil localities, including some that are no longer accessible," Barbour Wood said. Another finding is that shells in the museum collections are better preserved, she said. "It is an advantage of time. Museums can keep the best examples of specimens for collections gathered over tim......SA, v. 97). "It was tubular, not spherical. But in some of the best specimens, we could see that the tube ...original site, Xiao's research team has discovered some embryos that may be at the hatching stage. He will report on this latest finding at the Geological S...Do lead bullets continue to be a hazard after they land?
...ms. That slows corrosion," Rimstidt said. However some lead escapes, he said. "But we learned that it is absorbed in the top few inches of soil and does not migrate beyond that," Rimstidt said. "Lead is not very mobile. It does not wash away in surface or ground water." Another finding is that there are ...Researchers tracking sources of arsenic contamination in water
...ndwater that has flowed through the mine, but that some of the arsenic is being retained in the streambed. Discovering the pathways from the mine to the stream and the conditions of discharge from groundwater into the stream are first steps to possible remediation and control, Schreiber said. "The change ...Antibiotic-resistant bacteria increased after clindamycin use for common vaginal infection
...omplaint that infects up to 50 percent of women in some populations. BV is characterized by an increase in...as those whose infection was cured, he said. While some bacterial concentrations decreased for both groups, women treated with clindamycin experienced more ...JCI table of contents November 1, 2004
...al defects. These embryos, however, often contain some normal cells that, while unable to create a fully ... as they have been shown to block the migration of some cell types in culture. Michael Klagsbrun and colleagues, from Harvard Medical School, examined semap...Sleeping, waking, ... and glucose homeostasis
...lar waking and sleeping cycles. It's been know for some time that variations in sleep and wakefulness are ...f these transcriptional factors rather than due to some other behavioral effect that ablation of the hypothalamus might have caused. It's possible, therefor...First human trial of bioartificial kidney shows promise for acute renal failure
...patients with acute renal failure, and resulted in some improvement of the patients' clinical conditions. It's a small study but it was compelling enough for us and the FDA to go forward with a full phase II study," says lead study author H. David Humes, M.D., professor of Internal Medicine at the U-M Med...