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Tag: "decreases" at biology news

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...s. “We found that HIV fusion peptide dramatically decreases the amount of energy needed to bend a cell-like membrane,” said Stephanie Tristram-Nagle, associate research professor of biological physics at Carnegie Mellon. “This helps membranes to curve, a necessary step for HIV to fuse with an immune cell as i...

Genomic Analysis Uncovers New Targets for HIV Vaccine

...s in the blood, known as the viral load, gradually decreases and then levels off, a period during which patients do not exhibit symptoms of their disease. The viral load during this leveling out is an indication of how well the patients' own immune system is battling the virus, and this is the point in the inf...

Salty oceans provide early warning for climate change

...icator of climate change. Significant increases or decreases in salt in key areas could forewarn of climate change in 10 to 20 years time. Presenting their findings at a recent European Science Foundation (ESF) conference, scientists predicted that the waters of the southern hemisphere oceans around South Afri...

Alzheimer's disease to quadruple worldwide by 2050

...early all of that decline would be attributable to decreases in those needing costly late-stage disease treatment in 2050. The largest increase in the prevalence of Alzheimer’s will occur in Asia, where 48 percent of the world’s Alzheimer’s cases currently reside. The number of Alzheimer’s cases is expected...

Hearts of male and female rainbow trout are different

... (NaCN) -- an inhibitor of oxidative metabolism ¡V decreases activity of the glycolytic pathway and cardiac performance in both sexes, and if males possess a larger outermost (epicardial) layer of the ventricle vs. the inner endocardium layer. The trout heart is a composite organ and layer distinction is impor...

Vaccine prevents prion disease in mice

...ting areas." He also noted that a vaccine that decreases the spread of prion disease in animals also reduces the possibility that the disease could infect humans. ...

Research says boiling broccoli ruins its anti-cancer properties

...have shown that consumption of Brassica vegetables decreases the risk of cancer. This is because of the high concentration in Brassicas of substances known as glucosinolates which are metabolized to cancer preventive substances known as isothiocyanates. However before this research it was not known how the glu...

Switching genes to overdrive improves muscular dystrophy symptoms in mice

... accurately, like a light dimmer that increases or decreases the activity of genes under its control. Exercising a muscle raises PGC-1alpha levels, causing the formation of more mitochondria, the chemical power plants that create energy in cells. PGC-1alpha is also required for the normal operation of genes...

Corals that can fight global warming may one day help fragile reefs

...s difficult to pinpoint yet how temperature stress decreases the immune response," said Harvell. "Although corals are near the base of the evolutionary tree, they are complicated animals." The complexities arise from different levels of symbiosis within a coral, both with bacteria on the surface and algae in...

Fighting influenza & co. with 40,000 blood samples

...his is that the effectiveness of the immune system decreases with age. An international research consortium now wants to find out why this is the case. Roughly 1.8 million euros will be provided by the EU for this in the next three years. With other diseases it has already been proven that the older body can n...

Researchers urge monitoring of bone health during chemotherapy

...or encourages bone breakdown, and any therapy that decreases bone density could potentially enhance tumor growth in bone," says senior author Katherine Weilbaecher, M.D., assistant professor of medicine and of cell biology and physiology. "But there are things that can be done to counteract this. Physicians sh...

Ethanol vehicles pose a significant risk to human health, study finds

...heastern United States will be partially offset by decreases in the southeast. ''However, we found that nationwide, E85 is likely to increase the annual number of asthma-related emergency room visits by 770 and the number of respiratory-related hospitalizations by 990,'' Jacobson said. ''Los Angeles can expect...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

...rapeutic response. For example, if the viral level decreases in samples taken at later dates, then we know the drug is probably working." This new technology allows the researchers to analyze very low concentrations of target molecules. "Instead of analyzing a liter of sample where the concentration could b...

Too much of a good thing? Excess nutrients or water limit biodiversity

...much of a good thing (nutrients or water) actually decreases the diversity of species in an ecosystem while it increases the productivity of a few species, according to a grassland experiment conducted by University of Minnesota researchers. The reduction in species diversity occurs because increasing the am...

Groundbreaking Canadian asthma study

...dure, showed significant positive changes such as: decreases in asthma attacks, increases in days with no asthma symptoms, improvement in quality of life, reduction in using medication, and an improvement in asthma control. "These findings are very encouraging and are consistent with earlier trial results o...

Negative effects of caffeine are stronger on daytime sleep than on nocturnal sleep

...eep, it increases the amount of awakenings, and it decreases the amount of deep sleep. We have shown that these effects of caffeine on sleep are way stronger when taken at night prior to a daytime recovery sleep episode than in the evening before a nocturnal sleep episode." "Caffeine makes daytime sleep ep...

Global changes alter the timing of plant growth, scientists say

...ing is altered by global changes, it could lead to decreases in local plant diversity and negatively impact animals that depend on those plants." Satellite images in recent years have revealed that some regions of the globe are "greening" earlier in the spring--another signal that the Earth is responding to ...

A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide

...ible, but still important adverse effects, such as decreases in intelligence or changes in behavior. Grandjean and co-author Philip J. Landrigan, Professor at Mount Sinai School of Medicine, compiled a list of 202 environmental chemicals known to be toxic to the human brain using the Hazardous Substances D...

Fast test for low blood flow in dogs detects early heart trouble

...eart. The picture is so good, researchers say, it decreases the need for invasive, more risky procedures, such as angiograms or cardiac catheterization, to check for arterial blocks. More than 1 million Americans undergo cardiac catheterization each year, and the procedures take much longer to perform, 30...

Prototype just-in-time medical device enables untrained bystanders to save lives

...han 6 minutes and that the probability of survival decreases 7?0% each minute after the incident. Studies show that less than 1% of bystanders have had CPR training, and of those, fewer than 10% retained the knowledge only a few months after training. The JITS device prototype used in the study consisted of ...

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