Team finds cell gene that helps viruses multiply
...ow resource-poor RNA viruses use host cells to multiply is essential to developing strategies to ward off viral infections, says Ahlquist. The discovery of a gene that underpins a key step in the chain of viral infection provides important insight into the complicated interplay of virus and ho......y is diverted to producing electricity, they don't multiply as fast as usual, leaving less sludge to dispose of. Ziekus and Park are not the only researchers exploring the electrical potential of sugar-fed biofuel cells. Itamar Willner and his colleagues in the chemistry department of the Hebrew University o......echanism of apoptosis goes awry, cells continue to multiply and grow inappropriately, forming a mass of tissue -- a cancerous tumor. In colon cancer, excessive cell growth occurs as the result of the accumulation of a regulatory protein, beta-catenin, caused by mutations in the adenomatous polyposis coli (AP...Scientists use new technique to pinpoint key gene in infectious fungus
...ill invading pathogens, but Histoplasma is able to multiply inside them, eventually killing them. Seeking to understand this process, Goldman's group studied a gene that codes for a calcium-grabbing protein. The gene is inactive when Histoplasma lives in soil but is switched on when the fungus converts to a ...Report says hot steam dramatically increases ginseng's potency
... hours at 120 degrees Celsius (248 Fahrenheit) can multiply the herb's antioxidant qualities by eight times and its ability to relax blood vessels by up to 32 times, according to researcher Jeong Hill Park of Seoul National University in Korea. The hotter steam produced an optimal amount of biological activit...Scientists discover new stage in malarial infection
...en each year. The parasites that cause the disease multiply inside red blood cells, bursting from them to invade new cells. "But little was known about how the parasites break out of cells," said Daniel E. Goldberg, M.D., Ph.D., senior author of the paper and a professor of medicine and of molecular microbio...Oncogene spawns further mutation in breast cancer study
...ivide go out of control, which causes the cells to multiply out of control. As a cell divides it makes a copy of its own DNA, one for each new cell. The faster the reproduction, the more opportunities to introduce error in the system a mutation in a ras gene in this case, said Chodosh. Currently, MYC is...Searching for a genetic needle in a genome haystack
... a single risky gene. Genes might 'potentiate' or multiply each others' effects (geneticists call this 'epistasis') so that having four risk genes may actually increase an individual's risk by twentyfold." "How the genes themselves interact," said Samson, expanding on the second point, "will influence ho...UNC to test virus treatment for recurrent head and neck cancer
...ls only. Unmodified, adenoviruses can infect and multiply in both cancer and normal cells, thereby killing a...in Richmond, California, and known as CI-1042, can multiply in cancer cells. "That's why I was excited about a conditionally replication-competent adenovirus, b...Amoebas use "midwives" to reproduce
...an suggested that they examine how amoebas - which multiply faster than most other eukaryotic cells - separate. The study took place in Moses lab, which is equipped with sophisticated systems for observing and documenting the physical processes taking place at the level of a single cell. Much to their surpris...Scientists repair damage from heart attack
...the next seven to 11 days, the stem cells began to multiply and transform themselves into heart muscle cells and migrated into the damaged area. After an average of nine days, the newly formed heart muscle cells occupied 68 percent of the damaged portion of the heart. In addition, the stem cells also began p...Pooling worldwide data about childhood tumors helps researchers gauge aggressiveness of treatment
... accelerator pedal, MYCN can cause cancer cells to multiply in a runaway fashion. When MYCN is amplified -- which means that cells have 200 copies rather than the normal two copies of the defective gene -- the prognosis is grave. In fact, at the time of Hunters diagnosis, only about 20 percent of children wit...UCSF study finds two old drugs may help fight prion diseases
...oblastoma cells, cancer cells that, by definition, multiply perpetually. These cells have been the basis of some prion studies for more than a decade, because they are susceptible to prion infection and have been proven legitimate indicators of the response of animals to prion infection. Whether the drugs wil...New DNA-base vaccine approach protects mice against anthrax
...producing bacterial cells that multiply until their numbers literally burst the cells, spreading infection. The bacterial cells produce and release toxin components that specifically attack additional macrophages, ultimately leadi...Bacteria test may make blood safer
...elets in very low number and different strains can multiply at different rates, thereby making detection difficult, Dr. Jacobs says. That is why this method holds so much promise. If blood banks have the technology to detect bacteria before platelets are used for transfusion, it follows that fewer patients wi...Univ. of Fla. professor: Air cleaning system destroys Anthrax, other pathogens
...here is no opportunity for bacteria to collect and multiply on the filters that clear it from the air, he said. Filters can actually increase the danger because they concentrate the bacteria, he said. The system is also an improvement over systems that use ultraviolet light, which do not consistently kill all...UT Southwestern scientists explain how the injured brain remodels itself
...ght affect the ability of the neural stem cells to multiply and repopulate or repair injured areas.......ntists can now isolate stems cells, induce them to multiply and preferentially direct them to become, for example, skin cells, nerve cells or heart cells. This opens the door to replacing damaged adult cells that are not able to regenerate and may ultimately allow scientists to grow replacement organs for th...UT Southwestern researchers develop new method of delivering vaccines
...ytes, critical components of the immune system, to multiply and initiate an immune response. The epidermis, or outermost layer of normal skin, contains immature dendritic cells known as Langherhans cells. Upon exposure to a topical chemical called a hapten, Langerhans cells mature and migrate from the epider...The new biology of rocks: 'Are there medical implications of geomicrobiology?'
...ists have discovered that Listeria can survive and multiply even during refrigeration. Black-band disease, which has been killing corals in the oceans, may be caused or exacerbated by cyanobacteria, which normally dwell as part of phytoplankton in the ocean. Salyers was part of a research team, led by UI ge...