American Chemical Society's Weekly PressPac -- July 25, 2007
...nts found in farmed and wild fish. The differences originate because farmed fish usually get a diet containing lower levels of marine-derived ingredients. With tests done on 10 wild and 10 farmed sea bass, the researchers cite the need to verify the findings on larger samples of different fish. ARTICLE #4 ...Scientists discover new way to study nanostructures
...am hypothesized that the new measured peaks likely originate from mechanical motions of the dimer, which causes enhancement of the electrical current at particular values of the applied voltage. At each of the peak voltages, the frequency of the AC Josephson current would resonate with the vibrational frequenc...Kaposi sarcoma arises independently from multiple cells
...lls. They concluded that few Kaposi sarcoma tumors originate from a single cell and that Kaposi sarcoma, especially in its advanced form, is not true metastatic cancer. In an accompanying editorial, Parkash Gill, M.D., of Norris Cancer Hospital and Research Institute in Los Angeles recommends what should co...Surprising origin of cell's internal highways
... While microtubules in some specialized cells can originate from non-centrosomal structures, the centrosome has been considered the main origination point for microtubule "nucleation" in most cells. Until now. "I've seen that there are lots of microtubules not attached to the centrosome," said Kaverina, as...Existence of muscle-building stem cells points to regenerative therapies for muscular disease
...dies had even suggested that satellite cells might originate from muscle cells that had essentially regressed, or dedifferentiated, to a more primitive developmental state. In the new study, the researchers took a closer look at the molecular profiles of satellite cells isolated from mouse muscle. They showe...Scientists track impact of Asian dust and pollution on clouds, climate change
... study plumes of airborne dust and pollutants that originate in Asia and journey to North America. The plumes are among the largest such events on Earth, so great in scope that scientists believe they might affect clouds and weather across thousands of miles while interacting with the Sun's radiation and pla...Harvard and U. Pittsburgh researchers explain carbon monoxide's anti-inflammatory effects
...t the anti-inflammatory effects of carbon monoxide originate within cells own molecular engines, mitochondria. Specifically, mitochondria react to low levels of carbon monoxide by releasing chemical signals that reduce or shut down the bodys inflammatory response, raising the possibility for the development of...Could USA presidential DNA trail reveal Middle-Eastern origins?
...rst Jewish president?: European K2 chromosomes may originate in Sephardic (Spanish) Jewish populations, who have their ultimate origins in the Middle East. Prof Jobling said: When we look closely at large collections of British Y chromosomes we find surprises, like this rare K2 lineage, and the African chrom...Light-activated compound silences nerves, may one day help epileptics
...ikely to help in cases where seizures consistently originate from the same brain region. Theoretically, doctors could keep a patient on regular doses of the new drug and implant a small fiber optic light in the dysfunctional region. The light would activate the drug only when seizure-like firing patterns start...Research suggests a significant circadian rhythm in swim performance lasting 2-4 minutes
...t" almost every 24 hours. Human circadian rhythms originate from the tiny hypothalamus residing in the back of the brain. The hypothalamus, working with the endocrine system, drives many of our behavioral and physiological rhythms. Researchers have speculated that there may be a circadian rhythm inherent i......ist of a number of specialised cell types that all originate from the same type of primal cell; the embryonic stem cell. Stem cells can develop into any type of cell through a carefully regulated process referred to as cellular differentiation. During differentiation, specific genes are switched on while other...ACS News Service weekly PressPac -- Feb. 7, 2007
...ncluding several suspected human carcinogens, PAHs originate in numerous sources including the coal tar used in...facturers claim that most PAHs in Austin waterways originate from the city's highways, which collect PAHs from motor vehicle exhaust, tire wear and oil drips, th...Low-pathogenic forms of bird flu do cause illness among birds
...c avian flu that causes death among birds seems to originate from intensive poultry farms." In the Dutch study 25 swans were investigated. The birds were caught in polder Wieringermeer (NW-Netherlands) last winter and were measured, weighed and screened for the prevalence of avian influenza viruses. Twelve b...UTSA awarded $900,000 NSF grant to support undergraduate scholars
...tion spiral neuron waves in the brain and how they originate and act. "We want this to be a top end scholarship for UTSA's best and brightest students on campus," said David Senseman, assistant professor of biology and UMB Scholar grant collaborator. Additional collaborators include Nandini Kannan, profes...Cells passed from mother to child during pregnancy live on and make insulin
... used when an individual harbors cells or DNA that originate from another genetically distinct individual. "To our knowledge a maternal contribution to endocrine function has not previously been described," the authors said. "Our findings also raise the possibility that naturally acquired microchimerism might ...Research upsetting some notions about honey bees
...r traced the genealogy of honey bees. Two branches originate in Africa. The honey bee is not native to North America; it was introduced from Europe for honey production in the early 1600s, Johnston said. Subspecies were introduced from Italy in 1859, and later from Spain, Portugal and elsewhere. When honey b...New technology makes clinical research more precise
...hnology can do this for all proteins, whether they originate from humans or from another biological source, such as a virus or a cancer cell. The marvelous thing about Epibase is that it can also do this for proteins for which little or no experimental data are available. Other technologies require at least a ...Two studies on bee evolution reveal surprises
...e earliest branches of the bee's evolutionary tree originate from the family Melittidae. That would mean that bees have an African origin and are almost as old as flowering plants, which would help explain a lot about the evolutionary diversification of these plants....Long-term cancer risk follows stem cell transplant recipients
...tic syndrome, for which blood cell lineages (which originate principally in the bone marrow and circulate in the blood) are abnormal. Destroying the patient's own unhealthy stem cells in the bone marrow and replacing them with a compatible donor's stem cells offers the chance of cure for a disease that otherwi...How did life originate on Earth? Until now, there have only been theories to answer this question. One of the fundamental steps leading to living organisms is the development of molecules that can replicate and multiply themselves--the first genetic material. A team led by...