Tag: "decline" at biology news

Link identified between age, cardiovascular disease

... that it points the way to use diet to prevent the decline in blood vessel function with age, and to treat it, if necessary, through drugs. "A compound we're already using showed the ability to lower ceramide levels and improve the cell signaling process, and this compound would be a good starting point for ...

Accelerating loss of ocean species threatens human well-being

...% depletion). Collapses are also hastened by the decline in overall health of the ecosystem fish rely on t... and archeological data. "We see an accelerating decline in coastal species over the last 1000 years, resulting in the loss of biological filter capacity, nu...

Governments should act now to save threatened turtles

...erhead turtles. These populations were driven into decline from the mid-1600s onwards, when massive harvesting of nesting turtles began. Only a few dozen individuals survive today. New research, led by the University of Exeter's School of Biosciences and the Cayman Islands Department of Environment, reveal...

Adults who go to bed lonely get stress hormone boost next morning

...ease in the first 30 minutes after waking and then decline to low values at bedtime. Adam, with her colleagues John T. Cacioppo and Louise C. Hawkley at the University of Chicago, and Brigitte M. Kudielka from the University of Trier, Germany, showed that changes in this pattern from one day to the next ar...

Pollinators help one-third of the world's food crop production

...search Council (NRC) report detailed the troubling decline in populations of key North American pollinators, ... Of particular concern in the NRC report was the decline of the honey bee, a species introduced from Europe and a critical pollinator for California's almond...

News tips from the Journal of Neuroscience

...ibe that, with age, BDNF levels in MeCP2 null mice decline sharply in neural structures important for respiration and autonomic control, including the nodose ganglia and brainstem. BDNF secretion also declined in these cells, but high-frequency electrical stimulation could rescue normal levels of BDNF releas...

Cougar predation key to ecosystem health

...e" of environmental degradation, all linked to the decline of a major predator, has been shown in a new study...sult isn't just loss of trees," he said. "It's the decline or disappearance of shrubs, wetland plants, amphibians, lizards, wildflowers, and even butterflies."...

Disappearing nest egg: Researcher studying declining numbers of macaws

...bers of the parrot family, have seen their numbers decline in recent decades, and that trend is continuing today. Dr. Don Brightsmith, a bird specialist at Texas A&M University's Schubot Exotic Bird Center, part of the College of Veterinary Medicine & Biomedical Sciences, is studying ways to make sure macaw...

Genetic disorder linked to rapid lung function decline in some World Trade Center rescue workers

... exposed to environmental irritants had more rapid decline in lung function compared with exposed workers with normal levels of protein. A1AT deficiency alters the ability of the lungs and liver to control the naturally-occurring healing process, thereby leading to unchecked inflammation in these areas. Indi...

Insights into activity-dependent neuronal growth through RSRF-supported research

...the one hand, mutant neurons exhibit a progressive decline in BDNF content after birth; the timing of this decline varies among different brain regions. On the other hand, mutant neurons release a greater percentage...

Special chip provides better picture of salmon health

...of wild salmon, offering the chance to reverse the decline in Britain's salmon population."...

Structure of enzyme offers treatment clues for diabetes, Alzheimer's

...ta protein, which has been linked to the cognitive decline of Alzheimer's disease. In the October 19, 2006, issue of Nature (available online Oct. 11), the researchers describe the structures of insulin-degrading enzyme (IDE) in complex with four of the proteins it digests: insulin, amyloid-beta, amylin ...

Rising ocean temperatures, pollution have oysters in hot water

...s. Today, with the oyster population continuing to decline from poor water quality and disease, it would take a year to filter the same amount of water, she said. In addition to filtering water, oysters create a kind of reef that other marine life depends upon. "Studies have shown that there are more than ...

Coral reef conservation by means of the global network of Marine Protected Areas

...cluding overfishing and pollution, is leading to a decline in their biological diversity. The effectiveness of Marine Protected Areas (MPAs) for conserving the coral biodiversity has been the subject of many specific studies at local level. Nonetheless, a world-scale assessment remains necessary in order to ...

Can further studies lower the cost of preserving vision?

...th neovascularization, whereas vision continued to decline on average in patients who received either placebo or photodynamic therapy. In June of 2006, based in part on the results of these trials, the FDA approved ranibizumab, which Genentech markets as Lucentis, for treatment of neovascular macular degener...

Report challenges common ecological hypothesis about species abundance

...nt near the centers of their geographic ranges and decline in abundance near the ranges' edges. "When we reviewed data from published studies that looked at species abundance at multiple sites across a range, we found almost no evidence that supported the so-called 'abundant-center hypothesis' and strong ev...

Fisheries linked to decline in galapagos waved albatross population

...ity could be partially responsible for an apparent decline in the breeding population," Awkerman said. "Our study puts together a frightening picture of what the potential for this species is. But, with educational outreach and further research there is potential to turn this around before too much damage i...

Ecology center awarded $21-million by National Science Foundation

...l issues such as loss of biotic diversity, habitat decline and fragmentation, and the over-exploitation of ocean resources....

Explaining the methane mystery

...cluding CSIRO researchers has shown that it was a decline in emissions of methane from human activities in the 1990s that resulted in the recent slower growth of methane in the global atmosphere. Since 1999, however, sources of methane from human activities have again increased, but their effect on the atm...

News tips from the Journal of Neuroscience

...ents that can occur in Parkinson's disease (PD): a decline in cellular dopamine concentrations and an increase in aggregates containing -synuclein. Mutations in the gene encoding -synuclein are responsible for some cases of familial PD. A number of factors can affect the initiation of synuclein fibril format...

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(Date:10/31/2014)... air out of a nagging mystery about the development of ... to why animal species didn,t flourish sooner, once sufficient oxygen ... end of the Proterozoic period, about 800 million years ago ... most researchers think there also was plenty of oxygen? , ... all. , In a study published Oct. 30 in ...
(Date:10/31/2014)... against Ebola one important hurdle has just been cleared ... University of North Carolina at Chapel Hill and colleagues ... can be infected with Ebola and display symptoms similar ... the current issue of Science , will significantly ... are desperately needed to curb the worldwide public health ...
(Date:10/31/2014)... his team have been studying the behavior of ... Alps for years. They observed that ravens slowly ... and playing. However, they also observed that these ... individual. Although in about 50 % of the ... the two affiliating ravens, intervening can be potentially ...
Breaking Biology News(10 mins):Lack of oxygen delayed the rise of animals on Earth 2Improved mouse model will accelerate research on potential Ebola vaccines, treatments 2
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