Estrogen protects male rats from aortic aneurysms
...rofessor of surgery in the U-M Medical School, who studies factors responsible for gender differences in abdominal aortic aneurysms. "Earlier studies have demonstrated that increased estrogen systemically inhibits the development of AAAs," Upchurch s...Study in Royal Society journals presents evidence for inherited factors in homosexuality
... highly cannibalistic. This is one of the very few studies to show generation cycles due to cannibalism in a natural population. Contact: Dr Mike Bonsall, Department of Biology and NERC Centre for Population Biology, Imperial College at Silwood Park, Ascot, BERKSHIRE, SL5 7PY Strategic growth decisions in h...Effort to control trade in great white sharks gets teeth from international community
...stry's first summer blockbuster. Since then, field studies on the species have revealed that the great white shark is rarely a man-eater. Most attacks occur when great whites confuse humans with their preferred prey--sea lions, seals and other marine mammals. In fact, great white sharks, along with many othe...Channel protein converts vibrations to electrical signal
...hat it may play another role. Previous biophysical studies had indicated that a springy structure that stretches when a hair cell's cilia move pulled on the channels. Although it was once thought that the tip links might serve this function, the recent discovery of the tip-link protein, cadherin 23, suggeste...Gladstone researchers resolve key Huntington's disease mystery in Nature cover story
...s of statistical analysis -- could also be used in studies of other neurodegenerative diseases characterized by the accumulation of cellular proteins, including Alzheimer's disease, prion diseases, amyotrophic lateral sclerosis (Lou Gehrig's disease), Parkinson's disease, and a group of nine so-called polygl...Study using robotic microscope shows how mutant Huntington's protein affects neurons
... these diseases has long been controversial. Some studies suggest that they may be a critical part of the di..., he adds. He and his colleagues are now planning studies to examine the role of proteasomes enzyme-filled compartments that break down and recycle proteins ...Tips from the Journals of the American Society for Microbiology
...vaccines as a favorable new form of vaccination as studies show they are quick to generate (days or weeks vs. months or years), are cost effective, and could offer long-term protection against various infectious diseases. The pDNA vaccine specific to this study contains conserved ge...Flies have morning and evening clocks
...rnal clock machinery of the circadian neurons. The studies showed that one set of circadian neurons drives the other. "It's as if there is a wiring circuit from one set to the next and, under natural light conditions, one can regulate the physiology of another," said Rosbash. The scientists theorize that thi...Laboratory test of evolutionary theory confirms importance of links between populations
...re highly complicated, however, and even long-term studies can only address a limited number of questions, he said. "This laboratory system gives us a halfway ground between the mathematical models and natural populations. It allows us to test whether our assumptions are realistic, and that puts us in a bett...Time-lapse movies show brain cells move like a two-stroke engine
... referred to as mPar6-alpha in mouse cells. Recent studies in other laboratories led the scientists to believe that mPar6-alpha helps give a cell polarity - in a migrating cell, a leading and a trailing end. Because migrating neurons are highly polarized, Hatten and her coworkers suspected that mPar6-alpha w...Muscling in on a deadly cancer
...erapy, surgery and radiation." Capecchi says the studies provide evidence that the cancer may originate in ...ss, we have our foot in the door." The new studies will be published Nov. 1 in the journal Genes & Development, with one of the studies published onlin...Mechanism discovered for muscle wasting seen in diabetes, AIDS and other diseases
...hemical pathways underlying muscle wasting. Their studies zeroed in on a transcription factor called NF-kB, which is well known for its importance in immune cells but was previously not known to be a critical mediator of muscle wasting. The investigators created two different strains of transgenic mice-......ication and control within the brain." No previous studies have directly examined the role of FGFs or their r... brain behind the forehead. Previously, brain scan studies have found differences in brain activity levels and size in these areas in people with psychiatric i...NHGRI seeks next generation of sequencing technologies
...of hundreds or even thousands of people as part of studies to identify genes that contribute to cancer, diabetes and other common diseases. Ultimately, NHGRI's vision is to cut the cost of whole-genome sequencing to $1,000 or less, which would enable the sequencing of individual genomes as part of medical ca...Perceptual decision-making hub pinpointed in human brain
... in the October 14, 2004 Nature. Although earlier studies in monkeys had suggested that such a decision-maki...t they see certain objects or features, the monkey studies showed. While their brain activity was monitored with functional magnetic resonance imaging (fMRI)...Surgeon General's report underscores the importance of new thinking on bone health
...ry throughout life from 1000 to 1500 mg daily. But studies find that diet alone typically provides only (half) the daily value needed. Fortunately, those who do not get enough calcium from food can easily and conveniently incorporate calcium supplements into their daily routines to meet their requirements. ...New Jersey Institute of Technology environmentalist receives Fulbright Chair award
...heads the graduate program in environmental policy studies in the department of chemistry and environmental science at NJIT. Her research focuses on coastal processes on beaches and dunes in estuarine and low wave energy environments. She is currently studying the relationship between beach processes and ho...Researchers find protein that makes long-term memory possible
...y also play a role in Alzheimer's disease, as some studies have shown that the brains of Alzheimer's patients have reduced levels of mBDNF or plasmin. ...Identifying genes that contribute to a low level of response to alcohol
...ay contribute to a low LR to alcohol. "Prospective studies have shown that a low response to alcohol absolute...es reviewed both animal and human English-language studies developed since January 1998, listed on Medline, and with appropriate keywords (n= 135). They then ......nces in parasites, plants and mammals. Subsequent studies showed that the Pdfs were active both in culture and in the living organism, thus potentially derailing the usefulness of these antibiotics for specifically combating infectious agents. In previous studies, Scheinberg and colleagues had found that a...