Children's Hospital Boston researchers regenerate zebrafish heart muscle
...ead replaced by scar tissue. Too much scarring can impair the heart's ability to pump and can lead to life-threatening arrhythmias. Keating and his colleagues believe that zebrafish, unlike humans, have especially vigorous development of new heart-muscle cells, or cardiomyocytes. This proliferation of cells...Scientists hone in on cause of amphibian deformities
...all population declines. "Deformities undoubtedly impair amphibian survival and most likely contribute to the dramatic declines in populations that have been recognized as a global concern since 1989," the researchers said in their report. "Both trends are disturbing in their own right and are also a warni...JCI table of contents, January 15 2003
...ived resistin and gut-derived RELMbeta selectively impair insulinaction on glucose production CONTACT: Luciano Rossetti Albert Einstein College Of Medicine Department of Pharmacology and Diabetes Research and Training Center 1300 Morris Park Ave. Bronx, NY 10461 Phone 1: 718/430-4118 Phone 2: 718-430-4215...Fighting fire with fire? Vaccine based on chimp virus shows promise against HIV
...lizing antibodies circulating in the blood able to impair any vaccine based on a common human adenovirus. But the new chimpanzee adenovirus vaccine possesses the immunological strengths of a human adenovirus vaccine without the drawback of pre-existing immunity in its target population. Because HIV infects ...Science picks -- leads, feeds and story seeds (February 2003)
...ms when contaminated storm water can significantly impair water quality. When compared with 23 other cities, the storm-water quality in Boston is generally similar to or better than that reported in the other cities. The contaminant that most adversely affects the use of the river after rainstorms is feca...Genetically engineered mice offer hope for isolating beta cells and treatment of type 2 diabetes
...ests that the presence of cytoplasmic GFP does not impair -cell development or function, at least in the line of mice described in this report. Consequently, they envision a number of uses of these mice for studying -cells in the body in isolation. In this regard, -cell function can be studied in the MIP-G...Oxygen deficiency is an endocrine disruptor in fish
...chers found that long-term exposure to hypoxia can impair fish reproduction through a variety of channels, including endocrine function, egg quality, hatching rate, fertilization and larval survival. Immature adult carp ( Cyprinus carpio ) were separated into two groups of 50 fish each. One group was reare...'Sleep debts' accrue when nightly sleep totals six hours or fewer
...f it is sustained night after night, can seriously impair our neurobiological functioning." David F. Dinges, PhD, Professor of Psychology in the Department of Psychiatry and Chief of the Division of Sleep and Chronobiology, served as principal investigator for the study. Dinges, Van Dongen and their collea...UI study discovers cells segregate molecules to control signaling
...sis and smoking-associated bronchitis are known to impair the airway barrier. The UI study suggests that under these disease conditions heregulin or other messenger molecules might not be well segregated from their receptors, and the receptors might be activated abnormally. "We asked what would happen in ou...Understanding obesity: New research examines how hunger signals work in the brain
... brain. Conversely, there might be substances that impair transporting leptin. If we could identify them, we could develop a new treatment for obesity based on blocking the substances that prevent leptin from getting into the brain."...Tips from the Journals of the American Society for Microbiology
...d and all may act separately or synergistically to impair the insect." (B.D. Foy, T. Magalhaes, W.E. Injera, I. Sutherland, M. Devenport, A. Thanawastien, D. Ripley, L. Cardenas-Freytag and J.C. Beier. 2003. Induction of mosquitocidal activity in mice immunized with Anopheles gambiae midgut cDNA. Infecti...Executive functioning in children prenatally exposed to alcohol
...lcohol exposure of less than one drink per day can impair EF in early childhood. "The results of this study confirm a possible brain-based path through which exposure to a substance does its damage," said Julia S. Noland, senior research associate at Case Western Reserve University and corresponding author...White noise delays auditory organization in brain
...auditory region of the brain, which may ultimately impair hearing and language acquisition, according to researchers from the University of California, San Francisco. According to the scientists, the young rats used in their study were exposed to constant white noise that is relevant to the increasing, rand...Key to hepatitis virus persistence found
...g the tricks that the hepatitis C virus employs to impair the immune system represents an important advance with potential implications for successful cure of those suffering from liver disease," says Leslye Johnson, Ph.D., chief of NIAID's enteric and hepatic diseases branch....Mouse model offers new explanation for kidney disease and failure
...han normal mice. Moreover, the mutation appears to impair the elimination of proteins that accumulate in the kidney, a previously unidentified process. The study, which will be published in the May 23 issue of the journal Science, is the first to suggest that proteins normally pass into the kidneys and tha...Air dried sperm could allow home storage
...d sperm have shown that the new technique does not impair the early stages of embryo cell division Dr Imoedemhe, from Erfan and Bagedo Hospitals, Centre for Assisted Reproduction, Jeddah, said that in the past it was believed that sperm "died" when allowed to dry in air because they were no longer motile an...Sleep deprivation within five hours of learning impairs memory consolidation in mice
...tion zero to five hours after learning appeared to impair spatial orientation and recognition of physical surroundings, known as contextual memory. Recollection of specific facts or events, known as cued memory, was not affected. Because the brain's hippocampus is key to contextual memory but not cued mem...University of Rochester scientists test new method to attack cancer
...s have used a technique called RNA interference to impair cancercells' ability to produce a key enzyme called telomerase. The enzyme,present in most major types of cancer cells, gives cells the lethal abilityto divide rampantly without dying. The laboratory experiments create anopportunity for researchers w...DFG presents the new MAK and BAT Value List 2003
...rosol that according to current knowledge does not impair the health of employees exposed during eight-hour working days over the long-term. Furthermore, the working substances are classified according to their carcinogenic, germ cell mutagenic, reproduction-endangering, sensitising, and skin-absorptive eff...Infectious disease study findings presented by University of Pittsburgh scientists
...Aug. 7. Even mild pelvic inflammatory disease can impair fertility Even mild pelvic inflammatory disease (PID) can impair fertility, reports a team led by Harold Wiesenfeld, M.D., associate professor of obstetrics, gynecol...