Children's Hospital Boston launches major genetic study of autism
...eatments. More than 90 percent of autism cases are believed to have a genetic component, and multiple genes are believed to be involved. But although much research has been done and many candidate genes identified, none h...U. of Colorado research team discovers life in Rock Glacier
... and Alpine Research. The high nitrate levels are believed to be a result of microbes metabolizing nitrogen within the glacier, said CU-Boulder graduate student Meredith Knauf. Rock glaciers are large masses of rock debris interspersed with ice in the high mountains of temperate areas. Moving at speeds of...Research team discovers first evidence of microbes living in a rock glacier
...versity (CU)-Boulder. The high nitrate levels are believed to be a result of microbes metabolizing nitrogen within the glacier, said CU-Boulder graduate student Meredith Knauf. Knauf will give a presentation on Dec. 13 about the discovery, at the Fall Meeting of the American Geophysical Union, held Dec. 13 t...NSF funds Panikov's Alaskan Tundra Microbial Observatory project
...ays Panikov. "Before 1990 microbiologists strongly believed that even psychrophilic or cold-loving microorganisms do require liquid water to grow and multiply, and below zero they mainly survive switching to cell division after temporary warming of the polar ice or permafrost above the freezing point. In 1990...Laser scalpel opens way for nerve regeneration studies in worms
... said Jin, would involve making mutations in genes believed to be involved in nerve regeneration and studying the effects on regeneration following laser severing of the nerves. In the experiments reported in Nature , the researchers first introduced a gene that produced a green fluorescent protein in th...Discovery of first demethylase molecule, a long-sought gene regulator
...cement with new ones. Part of the reason scientist believed this was that no one had isolated a demethylase, despite an active search. The Shi lab was not among those in the hunt, but they stumbled onto the demethylase while probing the function of a new gene repressor protein. Postdoctoral fellow Yujiang S...Scientists find impaired chromatin structure formation & imprinted gene involvement in Rett Syndrome
...fied in 1999 as the leading cause of RTT. MECP2 is believed to function as a transcriptional repressor of its downstream genes. When genes need to be silenced so that a protein is not produced in a given cell, methyl groups attach to CpG dinucleotides, which are often clustered in areas of the gene called C...Tips from the Journals of the American Society for Microbiology
...buted to contaminated poultry. Campylobacters are believed to achieve optimal growth in extremely warm temperatures while failing to thrive in temperatures below 86 degrees. Campylobacter jejuni appears to be the exception. Previous studies have shown a small portion able to withstand refrigeration and free...Hospital epidemiologists trace outbreak of organism to commonly used wound care equipment
...ty School of Medicine. The Hopkins case study is believed to be the first investigation to relate an outbreak of this bacterium to the pulsatile lavage device, and its results are to be published in the latest edition of the Journal of the American Medical Association online Dec. 22. The Hopkins investigat...Needling chromosomes yields insights into cell division
... during an early stage of cell division, so it was believed that they had detached from one another at that time. "What hadn't been done was to attempt to separate chromatids to directly determine whether they, in fact, are held together or not," said Nicklas. "So, Leocadia set out to use micromanipulation to...Vollum Institute discovery may unlock human genome
... off. These instructions or regulatory regions are believed to be far more numerous than genes, but it was not clear how to identify them." "We developed a novel technique that is able to isolate a comprehensive set of regulatory regions and map them to the entire genome. Our work will help unravel the genomi...JCI table of contents, 3 January 2005
...e for the majority of cancer-related deaths. It is believed that metastases arise from rare cells in the original tumor that acquire the ability to grow at a distant site. Previous studies using microarray technology which allows researchers to determine the expression levels of genes within cells and is oft...Queen's discovery sheds new light on ancient temperatures
...ed ikaite at several different levels in what were believed to be rock formations deposited in shallow, warm oceans during the interval between two ice ages that extended all the way to the equator millions of years ago. But ikaite forms in shallow water on the sea bottom at cold temperatures and melts when b...NJIT astrophysicist who revived earthshine named fellow of American Physical Society
...a technique for monitoring Earth's climate. It is believed that earthshine's measures are a useful complement to satellite observations for determining Earth's reflectance of sunlight. Long-time observations of earthshine thus monitor variations in cloud cover and atmospheric particles known as aerosols tha...Enzyme allows B cells to resist death, leading to leukemia
...e blood, bone marrow, and lymphatic tissues. It is believed that in the early stages of disease, B-CLL is the result of an undefined defect in the programmed signals that trigger normal B cell death (apoptosis). Livio Trentin and colleagues from Padua University School of Medicine now demonstrate that high le...New genetic mutation linked to Parkinson's disease
... a recently discovered Parkinson's disease gene is believed to be the most common genetic cause of inherited f...sociated with Parkinson's disease.For years it was believed that environmental factors were the primary cause of Parkinson's disease. It wasn't until 1997 that ...Study identifies the most common genetic cause of Parkinson's disease
...ic screening for the LRRK2 gene mutation, which is believed to be the most common genetic cause of inherited Parkinson's disease identified to date. The study, conducted by William C. Nichols, PhD, a geneticist at Cincinnati Children's Hospital Medical Center, is one of three Parkinson's studies published in...Spleen may be source of versatile stem cells
...tial adult stem cells produce a protein previously believed to be present only during the embryonic development of mammals. The finding both supports the existence of these splenic stem cells and also suggests they may be able to produce an even greater variety of tissues. The report appears in the January...Anthropologists find 4.5 million-year-old hominid fossils in Ethiopia
...ave unearthed skeletal fossils of a human ancestor believed to have lived about 4.5 million years ago. The fossils, described in this week's Nature (Jan. 20), will help scientists piece together the mysterious transformation of primitive chimp-like hominids into more human forms. The fossils were retrieved f...Many rivers and streams in the United States are believed to contain a toxic antimicrobial chemical whose environmental fate was never thoroughly scrutinized despite large scale production and usage for almost half a century, according to an analysis conducted by researchers at the Johns Hopkins Bloomberg S...