Tag: "indicator" at biology news

Time to go beyond cholesterol, MUHC cardiologists suggest

...ities. This study shows that apoB is a more robust indicator of a cardiac events and we suggest that it is superior to looking just at cholesterol levels. Sniderman and colleagues from Australia, British Columbia, Sweden and The Netherlands, analyzed data from epidemiological studies and clinical trials invol...

Canaries in a coal mine?

... of attention because amphibians are thought to be indicator species, or 'canaries in a coal mine' that provide an early warning of environmental degradation. The topic has drawn considerable scientific attention because there is no obvious, simple cause. Researchers are pursuing a handful of explanations for ...

Endothelial progenitor cells could serve as biological marker for cardiovascular disease

... that line the insides of blood vessels may be an indicator of overall cardiovascular health, according to research by scientists at the National Heart, Lung, and Blood Institute (NHLBI) and Emory University School of Medicine. The research was published in the Feb. 13 issue of the New England Journal of Med...

New hope for preventing major problems of the retina

...e increases retinal vessel diameters in vivo is an indicator that dopamine probably has a local effect on retinal vessels (also supported by data showing a high density of D1 receptor antibodies in rabbit retinal vessels). Conclusions This study finds reveals that flicker response in both retinal arteries an...

A new animal study clarifies how different parts of the brain regulate sleep

..., EEG power between 0.75 and 4.0 Hz) is a reliable indicator of non-rapid eye movement (NREM) sleep intensity. It is determined by the amount of prior waking and sleep, and may serve as a marker of sleep homeostasis. The enhancement of SWA by prolonged waking and its subsequent monotonic decline during sleep ...

Early mammals used pelvic bones to trot, study finds

...n, that makes the bones more important as a fossil indicator of increased locomotor efficiency," he said. If scientists study the fossil record and figure out when these bones first appeared, he added, it would shed light on a crucial step in the evolution of mammals. The research is part of a larger study by...

Umbilical cord matrix, a rich new stem cell source, study shows

...ins. The cells exhibit telomerase activity, a key indicator of stem cells, and they can be induced to form nerve cells, both neurons and glia, that produce a range of nerve-cell specific traits. Neurons are the nervous system cells that transmit signals; glial cells support the neurons. On the basis of the en...

UCI study offers blueprint for pinpointing sources of beach water pollution

...lity laws. Currently, beaches are tested for fecal indicator bacteria using methods that only provide general i...ces," said Grant, who has conducted numerous fecal indicator bacteria tests on Southern California beaches. "But the combination of indicator sampling and geneti...

URI biological oceanographers test shallow marine systems' response to increased nutrients

...A Coastal Ocean Program. Some of the shallow water indicator experiments were supported by the U.S. Environmental Protection Agency and the RI Sea Grant Program....

UF study: Calorie restriction reduces age-related brain cell death

...lso found that specific DNA fragmentation, another indicator of apoptosis, more than doubled in the unrestricted animals over time, but were 36 percent less in the calorie-restricted rats. Additional proteins called tumor necrosis factor and caspases 2 and 8 dormant proteins that become destructive when act...

K-State researchers use Colbert Hills process to study ecosystem of former landfill site...

... It is so flexible that scientists can monitor any indicator they want and group similar indicators into descriptive categories. This feature makes the process applicable to the whole range of systems. "The scientists must know what the best indicators are to monitor," Thien said. "If they take the same set of...

New study ties moderate beer drinking to lower heart attack risk

...f fibrinogen may one day serve as a new diagnostic indicator of heart attack risk, along with known risk indicators such as blood cholesterol and antioxidant levels, she says. Further studies are needed. Forty-eight (48) men, ages 46-72, with coronary artery disease were divided evenly into two groups. Individ...

Science picksLeads, feeds and story seeds (December 2002)

... of fluctuations of glaciers provides an important indicator of changes in regional and global climates. Volcanoes capped by glaciers pose significant threats in the form of lahars and jokulhlaups (mudflows and glacier outburst floods). The book, published as USGS Professional Paper 1386-J, is the result of ...

Scientists discover gene 'signature' for tumor's tendency to spread

... larger studies support these findings, this early indicator of life-threatening cancer spread might lead to a clinical test that would help determine appropriate treatment. The study will be published by Nature Genetics on its web site on Dec. 9. Most cancer deaths are caused not by the original or primary t...

CWRU researcher reveals differences in high-altitude living

...the bone morrow to produce blood cells and also an indicator of hemoglobin levels. Because the Amabaras have experienced famines and other hardships, Beall ruled out anemia, infections and inflammations that might also skew the findings. Healthy sea-level dwellers have saturations of oxygen in their bloods ...

Health care rationing in Germany

...y clinical decision making. For example: age is an indicator of probability of death, and a death that occurs during treatment might be considered a medical failure. Furthermore, there is less knowledge about the treatment of older patients and the most elderly. Like babies, the elderly have been largely exclu...

Polluted beach closures influenced by full moons and sunlight, surfer-engineer discovers

... beach should not be based on the concentration of indicator bacteria in a single grab sample,'' Boehm noted. ''It's not that the single sample standard doesn't protect people, it also overprotects them and says the beaches are dirty when they're not.'' Surfing and science An avid surfer, Boehm traces her in...

Health of American Indians on decline before Columbus arrived in new world

...and skeletal infection. Each indicator was scored from zero to 100 zero meant that the individual had had the worst possible case of the indicator, while 100 meant that the skeleton had no sign of the affliction. The healthie...

Using the ocean's living light shows to fight terrorism or track the planet's most massive migration

...chemicals, the phenomenon could also be used as an indicator of water quality once better understood. Widder's Oceans 2002 talk is scheduled for 4:00 p.m. on Tuesday, October 29. In March, she will be using the original SPLAT-cam system to explore the Sea of Cortez. She can be reached at 772-465-2400 ext. 315...

A red flag for lethal prostate cancer

...ays a role in cancer's development or is simply an indicator of lethal progression," says Chinnaiyan, an assistant professor of pathology and urology in the U-M Medical School. EZH2 is one of several related proteins that control a cell's genetic memory and interfere with transcription the process cells use ...

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