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Environmental chemical cocktail may sabotage sperm
...ions for human fertility for two reasons. Firstly, humans are likely to be exposed to more than one such compound at any given time and, secondly, our results show that human sperm are even more sensitive to these compounds than mouse sperm." Prof Fraser and her team tested combinations of three chemicals:...Decisions, decisions: Male or female?
... Van Doren said the same conduit also is active in humans and mice. When communication via the JAK/STAT pathway misfires, diseases such as cancer can result, he said. "Evolutionarily, germ cells are one of the most ancient cell types, needed by every type of animal to reproduce," Van Doren said. "Their dev...A virus-like hitchhiker may trigger bacterial meningitis
...ed strains of bacteria that had been isolated from humans and found that the strains that carried this virus-like stowaway were more likely to have caused disease. How this bacteriophage causes N. meningitidis to become more dangerous is unknown. It may help the bacteria get into the bloodstream, suggests T...Fluorescing lab worms signal longer life spans
...oratory. Most scientists believe the life span of humans and other living creatures is determined by a comb... environmental and chance factors. Twin studies in humans have suggested that genes are only about 15 percent to 30 percent responsible for a person's age at ...Novel plague virulence factor identified
...of mammals. There are different forms of plague in humans -- bubonic, pneumonic and septicemic -- depending on site of infection; and infections in humans are highly lethal if not immediately treated. "Dr Aballay has developed a new model for dissecting ...New Look at DNA Hints at Origin of UV Damage
...of mammals. There are different forms of plague in humans -- bubonic, pneumonic and septicemic -- depending on site of infection; and infections in humans are highly lethal if not immediately treated. "Dr Aballay has developed a new model for dissecting ...Assessing the Amazon River's sensitivity to deforestation
...stimates of future deforestation to understand how humans may be affecting the Amazon. Coe says, "This research will provide us with a better understanding of how sensitive the Amazon river is to human activities and can provide government managers and civil society with a tool for analyzing the costs and b...Can our genes tell the story of our divergence?
Since humans and chimpanzees forged separate evolutionary paths...ill, and their colleagues compared 13,731 genes in humans to their equivalents in chimps to find positively selected genes in both species. Nielsen et al. id...Neandertal femur suggests competition with hyenas and a shift in landscape use
...leolithic archeological period, just before modern humans arrived in Europe. The research will be published...ted with the transition from Neandertals to modern humans was that people became more mobile and their territories became much larger. They became less locall...New protein vital for immune response is found in surprise location
...edical Institute. "Viruses have evolved along with humans and have developed strategies to evade the host's immunity. It's quite possible that some viruses may target MAVS in order to achieve successful infection. In those cases, therapies that enhance MAVS expression or activity may be a viable option for ...... the toadfish brain are less tangled than those in humans and other creatures that must cram their nerves through relatively small openings in the skull. The human vestibular (balance) system relies on fluid-filled ear canals that tell us which end is up. The toadfish vestibular system is similar enough to...Why are coyotes getting more aggressive?
...last stage before coyotes actually start attacking humans -- such as small children that are perceived by th... in the past two decades, several dozen attacks on humans have been reported in California. Coyotes, which are closely related to dogs and wolves, are ubiqui...Pinpointing the cause of a neurodegenerative disorder
...GFi-1 showed Purkinje cell degeneration, just like humans with SCA1. "The overall picture we have now is that glutamine expansion causes some aspects of the pathology of SCA1 in part by enhancing the activity of the domain that is outside the glutamine repeat," said Zoghbi. The finding offers insight into...'Punctuated' evolution in the human genome
... is the primary cytogenetic distinction separating humans and their evolutionary progenitors. Within this 7...nds to the time period following the divergence of humans and Old World monkeys, but before the divergence of humans and great apes. For the past 10 million y...Pinpointing a culprit molecule in Alzheimer's disease
...ave the abnormal protein underlying the disease in humans show little pathology of the disease. Specifically, such mice are genetically altered to overproduce mutant human amyloid precursor protein (APP). It is this protein that, when clipped by enzymes, produces the amyloid beta (Ab) peptide that clusters ...Scientists focus on 'dwarf eye'
...team successfully mapped the MFRP gene mutation in humans and discovered that the protein was completely missing from nanophthalmos patients. In a normal human eye, the MFRP protein is located on the surface of the retinal pigment epithelium (RPE), which is located beneath the retina and helps maintain pho...Woods Hole Research Center plans controlled burn in Amazon rainforest
... it even more vulnerable to subsequent fires. When humans move into an area and begin clearing forest, they seldom abandon it and move away, so until education can alter their behavior, repeated sources of ignition in the future are all but guaranteed. The expectation is that the second fire will be hotter ...Looks matter to female barn swallows
...dynamic and continual. This is something that most humans can relate to -- think of how much time and money we spend on our looks and status long after we have established stable relationships." Barn swallow ( Hirundo rustica erythrogaster ) males have a wash of reddish-chestnut color from their throats t...'Jumping genes' contribute to the uniqueness of individual brains
... by mutations rendering them dysfunctional, but in humans a hundred or so are free to move via a "copy and paste" mechanism. Long dismissed as useless gibberish or "junk" DNA, the transposable L1 elements were thought to be intracellular parasites or leftovers from our distant evolutionary past. It has bee...Researchers devise new technique for creating human stem cells
...ramming process using eggs, because in the case of humans it is very difficult to obtain eggs in any quantity and difficult or impossible to genetically manipulate them," he said. "But embryonic stem cells can be grown in large quantities. We can isolate the components of the reprogramming machinery, and we...Other Tagsorigin 2origin 3origin 4origin 5origin 6origin 7origin 8origin 9threats 2threats 3pools 2swimming 2swimming 3swimming 4enhance 2enhance 3enhance 4enhance 5enhance 6enhance 7enhance 8enhance 9enhance 10acids 2acids 3acids 4acids 5acids 6acids 7acids 8amino 2amino 3amino 4amino 5amino 6amino 7amino 8amino 9amino 10intestinal 2intestinal 3gut 2gut 3Other Contentstransurethraltransurethralinjuryinjuryinjuryinjuryinjuryinjuryinjuryinjuryinjuryeventeventeventeventeventeventeventeventeventtraumatictraumatictraumatictraumatictraumatictrichinosistrenchtremortremortremor
(Date:12/15/2009)... Economics, environmental impacts, social dynamics, and production ... overall success of an agroecosystem. Positive or negative, ... individuals and social groups to continuously adapt farming ... , Experiential learning theory suggests that knowledge is ... Such lessons are especially valuable for environmental and ...
(Date:12/15/2009)... woolly mammoths and ancient American horses may have ... thousand years longer than previously thought. After plucking ... a team of researchers used cutting-edge techniques to ... permafrost samples dated to between 7,600 and 10,500 ... least one population of these now-extinct mammals endured ...
(Date:12/15/2009)... German . , Leipzig: Species distribution models ... distribution of mammals. This is the finding of a ... mammals. The researchers analysed data on species distribution, climate, ... information of the species. Judging by the large differences ... seem to adapt fast to changing climatic conditions. This ...
Breaking Biology News(10 mins):Experiential learning teaches change and adaptation 2Late-surviving megafauna exposed by ancient DNA in frozen soil 2Late-surviving megafauna exposed by ancient DNA in frozen soil 3Late-surviving megafauna exposed by ancient DNA in frozen soil 4Species distribution models are of only limited value for predicting future mammal distributions 2Ninety Percent of All Vaccine Preventable Deaths Occur in Those 65 and Older According to Highlighted Studies in the December Patient Safety Advisory 62361 1Ninety Percent of All Vaccine Preventable Deaths Occur in Those 65 and Older According to Highlighted Studies in the December Patient Safety Advisory 62361 2Ninety Percent of All Vaccine Preventable Deaths Occur in Those 65 and Older According to Highlighted Studies in the December Patient Safety Advisory 62361 3Ninety Percent of All Vaccine Preventable Deaths Occur in Those 65 and Older According to Highlighted Studies in the December Patient Safety Advisory 62361 4Ninety Percent of All Vaccine Preventable Deaths Occur in Those 65 and Older According to Highlighted Studies in the December Patient Safety Advisory 62361 5Industry Forms Association to Address Opportunities and Challenges of Synthetic Biology 15029 1Industry Forms Association to Address Opportunities and Challenges of Synthetic Biology 15029 2Shanghai ChemPartner Ranks 3rd among 2009 Deloitte Technology Fast 50 China Winning Companies 15027 1Shanghai ChemPartner Ranks 3rd among 2009 Deloitte Technology Fast 50 China Winning Companies 15027 2Shanghai ChemPartner Ranks 3rd among 2009 Deloitte Technology Fast 50 China Winning Companies 15027 3(Date:12/16/2009)... widely used human embryonic stem cell lines lack genetic ... must be addressed to ensure that all sectors of ... University of Michigan research team. ,, In the first ... 47 embryonic stem cell lines, including most of the ... determined the genetic ancestry of each line and found ...
(Date:12/16/2009)... Dec. 16 HealthSciences Institute will ... care professionals, teams and organizations who serve ... chronic diseases in employer, health plan, medical ... collaborative will offer free, noncommercial webinars on ... disease prevention, management and care improvement. Each ...
(Date:12/16/2009)... Scientists pinpoint seven that increase susceptibility to disease ... genes associated with increased susceptibility to leprosy have ... , The researchers, who analyzed more than 10,000 ... in China, said their discovery highlights the important ... the development of leprosy. , "Though leprosy is ...
(Date:12/16/2009)... Research teams led by the Wellcome Trust Sanger Institute ... , All cancers are caused by mutations in the ... person,s lifetime. The studies, of a malignant melanoma and ... all the mutations in the genomes of two cancers. ... each year: almost all are associated with smoking. The ...
(Date:12/16/2009)... Florida researchers at work on a malaria elimination study ... spread of the disease using cell phone records. , ... determine how often residents of Zanzibar travel and where ... off the coast of Tanzania in East Africa, Zanzibar ... commissioned the study as part of deliberations on whether ...
Breaking Medicine News(10 mins):Health News:U-M Study Reveals Surprising Lack of Genetic Diversity in the Most Widely Used Human Embryonic Stem Cell Lines 2Health News:U-M Study Reveals Surprising Lack of Genetic Diversity in the Most Widely Used Human Embryonic Stem Cell Lines 3Health News:U-M Study Reveals Surprising Lack of Genetic Diversity in the Most Widely Used Human Embryonic Stem Cell Lines 4Health News:U-M Study Reveals Surprising Lack of Genetic Diversity in the Most Widely Used Human Embryonic Stem Cell Lines 5Health News:New Learning Collaborative to Prepare Clinicians for Better Chronic Care 2Health News:New Learning Collaborative to Prepare Clinicians for Better Chronic Care 3Health News:Leprosy Genes Identified 2Health News:Lung cancer and melanoma laid bare 2Health News:Lung cancer and melanoma laid bare 3Health News:Lung cancer and melanoma laid bare 4Health News:Lung cancer and melanoma laid bare 5Health News:Lung cancer and melanoma laid bare 6Health News:Scientists use cell phone records to predict spread of malaria 2Health News:Scientists use cell phone records to predict spread of malaria 3[0] U-M Study Reveals Surprising Lack of Genetic Diversity in the Most Widely Used Human Embryonic Stem Cell Lines[1] New Learning Collaborative to Prepare Clinicians for Better Chronic Care[0] Leprosy Genes Identified[1] Lung cancer and melanoma laid bare[0] Scientists use cell phone records to predict spread of malaria
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