Racial groupings match genetic profiles, Stanford study finds
...uld be broken down into smaller sub-sections. This suggests that there isn't enough genetic difference to distinguish between people who have ancestry from northern Europe versus southern Europe, for example. Risch admitted that few people in this study were of recent mixed ancestry, who might not fall into s...Reviewing scientists say proposed conservation measures unlikely to help whales
...r over-exploited populations. More recent research suggests cases in which they are or are not effective," said Gerber. "If we are going to create these sanctuaries, let's use some data about the distribution and habitat requirements for these species to identify their potential efficacy." The article propos...Pro-inflammatory enzyme linked to diabetes; Immune system's macrophages may be key to treatment
... (UCSD) School of Medicine. In addition, the team suggests that inhibition of the enzyme in the immune system's macrophages may be a new diabetes therapy. Published in the February 2005 issue of the journal Nature Medicine, the study describes research in mice that identifies enzyme IkB kinase (Ikk-) as a c...Discovery promises simpler therapy for sickle cell disease
...or treating the disease, they said. Their research suggests that an inability of red blood cells to relax blood vessels through the release of nitric oxide is a major factor behind the disease's primary symptoms -- including oxygen deprivation and blocked vessels that can lead to pain, clots and stroke. Thus,...Researchers find new genes necessary to make embryo
...e are associated with tumors. The C. elegans study suggests specific cellular roles for these genes, thus providing important clues to how these genes work in humans. The new data also asked allowed the researchers to have a first genome-wide look at a classic genetic phenomenon called "partial penetran...Physicists discover temperature key to avalanche movement
...he solid snow covering a ski slope, for instance", suggests lead author of the paper Patrick Mayor of the EPFL in Lausanne, Switzerland. "While it stays still it is a solid, but as soon as it starts flowing downhill as happens during an avalanche the flowing material is behaving more like a liquid. Similarly,......ds to our understand of this process, and as James suggests "one gets the sense that the holy grail of insulin action is within reach." The study will appear in the February 1 edition of the Journal of Clinical Investigation . TITLE: Adipocytes from Munc18c-null mice show increased insulin sensitivity in in...Increased risk of osteoporosis associated with gene that one in five people have
...ffected by genetic variation in CYP1A1. "Our study suggests that this genetic variant specifically affects the hip bones," Villareal says. "For those with this form of the CYP1A1 gene, that's not good news. Low density in the hip can lead to hip fractures, which can be devastating." Recent statistics from the...Heart specialists call for cardiovascular screening for all young competitive athletes
...4% in sports-related cardiovascular events. "This suggests we have selectively reduced sports-related sudden death from HCM because our system, using ECG, identifies vulnerable young people," said Dr Corrado. He said that a number of the conditions now being picked up by ECG had only recently been discovered...Gene used in brain development can cause childhood brain cancers
... upon these medulloblastoma brain tumor cell lines suggests that this type of tumor may respond favorably to ATRA-based therapy," said Hai Yan, M.D., Ph.D., the principle investigator of the study at the Brain Tumor Center at the Duke University Medical Center. "ATRA is already clinically approved for the tre...Marsh-dwelling mole gives new meaning to the term 'fast food'
... one out of three times. This inefficient behavior suggests that the moles are operating at, or near, the limit set by the speed which the mole's nervous system can process touch information, the researchers conclude. "If additional research confirms that this is the case, then these little animals can infor......nergy research institution in Richland, Wash., now suggests a way to put this house in order. They offer a powerful new method that integrates experimental and computational analyses to ascribe function to genes that had been termed "hypothetical" -- sequences that appear in the genome but whose biological p...Rats infected as newborns grew up vulnerable to memory problems during an immune challenge
...ring the value of good prenatal care, new research suggests that early infection may create a cognitive vulnerability that appears later during stress on the immune system. Researchers at the University of Colorado at Boulder have reported that rats who experienced a one-time infection as newborns didn't lea...Melatonin shrinks bird gonads. What does the popular supplement do in humans?
...ct that the hormone has such a big effect on birds suggests it could have significant though unnoticed effects in humans, said George E. Bentley, an assistant professor of integrative biology at UC Berkeley. In humans, GnRH one of various short protein or peptide hormones referred to as neuropeptides brings...Experimental domestication of foxes yields clues to cognitive evolution
...ing human social cues. The current study therefore suggests that social intelligence can increase simply as a result of an animal becoming less fearful and aggressive towards potential social partners....Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits
...ation pathways conserved in all three. The finding suggests that only 0.5 percent of the protein clusters and communication pathways are conserved in the three species, but Ideker estimated that as many as 80 percent of the actual protein interactions have yet to be discovered. "We are currently limited by th...Gene therapy for Parkinson's disease moves forward in animals
...ch. "This is additional experimental evidence that suggests that it can be a promising approach to this disease using in vivo gene therapy, which is very applicable to humans. It even presents theoretical reasons that might solve some of the safety issues that have been raised about GDNF. But many things rema...UCSD team discovers specialized, rare heart stem cells in newborns
...identifies undifferentiated cardiogenic precursors suggests the feasibility of isolating isl1+ cardiac progenitors from mouse and human embryonic stem cell systems during cardiogenesis." "We think that these cells normally play an important role in the remodeling of the heart after birth, when the newborn hea...Bird brains show how trial and error may contribute to learning
...t its subtle variations. "In a nutshell, our paper suggests that the basal ganglia play a special role in generating motor variability," Brainard said. "It's been known for a long time that this circuit is important in learning. Our data supports the hypothesis that one of the things it could be doing is intr......, reported in the Feb. 11, 2005, issue of Science, suggests that the transformation of bones from the jaw into... earlier in time than T. trusleri, Rich said. This suggests that the development of the acute hearing system with the chain of bones from the eardrum to the inn...