U-M and Israel launch major international cancer study
...n Ashkenazi Jewsworldwide carry a specific genetic alteration that doubles a person's risk ofdeveloping colon cancer. The frequency of this genetic change, called I1307K,is uncommon in Sephardic Jews and nearly non-existent in the Arabic populationof Israel. I1307K does not directly cause colon cancer, but inc...NYU scientists discover gene for a dementing brain disease
NEW YORK, June 23, 1999 -- A single alteration in the DNA alphabet occurring in a newly discovere... codon TGA, the T was substituted for A, a kind of alteration called a base substitution or point mutation. The mutation caused more amino acids to be added onto ...USGS scientist awarded prestigious Marine Conservation Fellowship
...n land, said Estes. While large-scale habitat alteration is clearly evident on land, it is less evident in the oceans. "Marine systems have collapsed in areas where there is simply no evidence of habitat destruction, such as in remote coastal regions and the open sea," said Estes. He suspect...Nearly half of Earth's land has been transformed by humans; 50 'dead zones' found in oceans
...es is clear, thenew data also indicates a dramatic alteration of Earth's oceans. There are nowsome 50 'dead zones' in the world's coastal areas, she reported. The largest inthe Western Hemisphere is in the Gulf of Mexico, caused by excess nitrogen andphosphorus flowing down the Mississippi River. "We've long ......heir daily business, hoping to see how the genetic alteration changedtheir behavior. After scrutinizing hundreds of videotapes of mice scampering, grooming,eating, and sleeping, Richard Chemelli, a pediatric research fellow inYanagisawa’s laboratory, began to feel discouraged because despite monthsof obse...Disconnecting molecular handbrakes has drastic consequences
...r that in acute lymphocytic leukemia there is some alteration in howthe immune system cells are responding and proliferating," he said. "So,obviously an important question is what has happened to this brake duringtransformation. We're now beginning to explore whether SOCS1 isinvolved." Also, he said, more s...Mercury can jump barrier that keeps toxins out of brain
... via water-exposed nerve terminals mayresult in an alteration of these functions and jeopardize fish survival. Webelieve that uptake of metals such as mercury and the subsequent transport alongsensory nerves is a process common to all fish species, and in this respect, itis possible that other toxins (such as p...Colorado State scientist is Ecological Society of America president
...mbers solve environmental problems such as habitat alteration and destruction, natural resource management, species extinction and loss of biological diversity, ecosystem management, ozone depletion and global climate change, sustainable ecological systems, ecological restoration and biotechnology. Wall is a f...New evidence pushes back age of sex-determining chromosomes
...r. Inmammals, that defining event was probably the alteration of an existing gene tocreate the male-promoting SRY gene on the Y chromosome. "That's the evolutionary equivalent of a hijacking," said Page. "That pair ofautosomes, previously with no male or female leanings, is then taken inexorablydown the path...Finding suggests a common childhood leukemia may form in the womb
...twins with leukemia indicates that a secondgenetic alteration - involving the second copy of the TEL gene, one o...mutation. Studies indicate that thesecond genetic alteration may result from an abnormal reaction to commonchildhood infections. Wiemels conducted the research i...Jefferson scientists use gene repair technique to change albino mice hairs to black
...the University of Pennsylvania, corrected a single alteration in the gene that controls skin color in albino mice cells. The scientists, in what they dub "localized gene therapy," delivered a small oligonucleotide - DNA interspersed with small amounts of RNA - to the melanocytes, or skin color-produci...Gene mutation alters feeding behavior
...pen rather than opening and closing normally. This alteration prevented opening of the pharynx, the muscle used to eat. The opening of the potassium channel, called EXP-2, causes muscle relaxation. Normally the muscle relaxes a fifth of a second after contraction of the muscle. In the mutant worms, it rel...Why muscle strength seeps away: a new cause for muscular dystrophy
...two bad copies from their parents. The predicted alteration of the mosaik piece was subsequently verified and conclusively demonstrated in a collaboration with Dr. Rita Passos-Bueno. Muscle biopsies and blood samples from patients were further investigated to disclose the complete absence of a small muscle pr...UC Berkeley biologist disputes current dogma that genetic mutation is the cause of cancer
... rarely produces much effect, ... but simultaneous alteration in many activities can overwhelm the normal controls." In 1998, Nature Biotechnology science editor Harvey Bialy noted that the only solid tumors -- so-called to distinguish them from leukemia and similar immune system cancers -- whose cells contain ...What happens when genetic information is not correctly edited in brain cells
... a few nucleotides in the RNA become altered. This alteration of nucleotides in RNA leads to proteins that contain in one or a few positions a different amino acid than the one predicted from the gene sequence. The substitution of single amino acids in certain positions of the protein changes the protein's func...Researchers discover major diabetes susceptibility gene
... pairs that make up the human genome. This minute alteration of the DNA acts in a recessive manner; individuals who inherit two copies of the "G" version have increased risk for diabetes. "Finding a significant mutation in an intron is almost, but not entirely, unheard of," noted Bell. There are other examp...Gene alterations for cystic fibrosis may also account for chronic sinus problems in some
...ly than their healthy counterparts to carry a CFTR alteration associated with CF. Of the 10 patients who did have CF-linked alterations, 9 also carried another CFTR variant known as M470V, which occurs in about 50 percent of the general population. In recent years, chronic sinusitis has accounted for over...University of Wisconsin-Madison scientist is named ESA president
...rs focus on environmental problems such as habitat alteration and destruction, natural resource management, species extinction and loss of biological diversity, ecosystem management, ozone depletion and global climate change, sustainable ecological systems, ecological restoration and biotechnology. Carpenter...Hopkins researchers develop method to predict response to chemotherapy
... Johns Hopkins Oncology Center uncovered a genetic alteration that appears to predict how individuals with an aggressive type of brain cancer will respond to chemotherapy. The discovery, published in the November 9, 2000, issue of the New England Journal of Medicine, emerged from analysis of tumor samples fr...Energy-restricted diets shown to be best for improving lipid profiles
...e energy-restricted diet offered the most positive alteration of lipid profiles through favorable changes in HDL-cholesterol, triacylglycerol concentrations, and HDL:LDL ratios. Eleven healthy nonobese men aged 40-60 years were studied at McGill University, Montreal. All had elevated LDL cholesterol and triac...