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Tag: "counts" at biology news

Cambodian vulture nests offer hope for species

...or the birds and a chance to undertake coordinated counts to monitor the size and structure of the population. Chansocheat remains optimistic, adding "We have the backing of local people and of the Government. If we can find financial support to extend what we know is already a successful strategy, then...

It's OK for men with high blood pressure to have a drink or two, new study finds

...of beer, a glass of wine, or a shot of liquor each counts as one drink. Moderate consumption of alcohol is known to be linked to a lower risk of heart disease. But, since alcohol can increase blood pressure, would the same be true for men who have high blood pressure? The new study, published in the J...

Yale biologists 'trick' viruses into extinction

...HIV therapies are designed to maintain high T-cell counts in the human body, so that the immune system can properly function. But, these drugs therapies are very expensive. Turner suggests, "A cheaper option is the possibility of engineering trap cells that have CD4 molecules on their surface, but no nu...

Researchers urge monitoring of bone health during chemotherapy

...used to help cancer patients recover healthy blood counts after chemotherapy, which can destroy white blood cells. Low levels of white blood cells leave patients susceptible to infection. "This growth factor encourages bone breakdown, and any therapy that decreases bone density could potentially enhance ...

Researchers first to map gene that regulates adult stem cell growth

... able to recover more quickly. Increased stem cell counts also would be valuable during bone marrow transplants, where the greatest number of stem cells are desired to help a patient recover from cancer. Another possible use for Latexin would be to help increase the number of stem cells available in umbi...

Biologists produce global map of plant biodiversity

...ns alone." Combining field-survey based species counts from over a thousand regions worldwide with high-resolution environmental data, the scientists were able to accurately capture the factors that promote high species richness of plants. "This allowed us to estimate the richness of yet unsurveyed p...

Cornell researcher helping develop quick, cheap HIV/AIDS test

...heir life span can be increased by many years. CD4 counts assist in the decisions on when to initiate and when to stop the treatment, which makes this test so important. "While such testing is routine in Western countries -- and used repeatedly over the course of treatment to see if interventions are effe...

How does your brain tell time?

...s that a clock-like mechanism ?which generates and counts regular fixed movements -- underlies timing in the brain. In contrast, Buonomano suggests a physical model that operates without using a clock. He offers an analogy to explain how it works. "If you toss a pebble into a lake," he explained, "th...

Malaria treatment efficacy compromised in certain HIV-positive patients

...a, are also the prime target for HIV. Low CD4 cell counts are a characteristic of HIV-induced immune suppres... show that HIV-positive patients with low CD4 cell counts tended to have an increased risk of malaria treatment failure when compared to both HIV-negative pat...

Supercomputing equipment to advance the frontiers of computational biology

...CCNI). This $2.23 million gift of IBM equipment counts toward the $1.4 billion Renaissance at Rensselaer campaign. "This award further advances the strong partnership between IBM and Rensselaer to develop a leading-edge, high-performance computational capability," said Rensselaer President Shirley Ann...

History-hunting geneticists can still follow familiar trail

...vation perspective, when scientists look at census counts of animals and how the population size may be increasing or decreasing, the study of mtDNA tells us about the level of genetic diversity in a population, which is important in making conservation decisions on endangered species," Mulligan said. "If t...

AIDS vaccine research offers new insights on survival

...n determined by measures of virus levels and total counts of CD4+ helper T-cells, which are indicative of in...0 days before levels of virus increased and T-cell counts dropped. But instead of ending the experiment at this point -- assuming that the vaccine conferred ...

How bad is malaria anemia? It may depend on your genes

...ia because they are known to reduce red blood cell counts as part of the body's normal response to such inflammatory conditions as rheumatoid arthritis or some cancers. Using immature blood cell precursors grown in a dish, the research team showed that adding MIF to the cells decreases both the final numbe...

Tyrannosaur survivorship -- tough times for teens

... metatarsals from individuals and used growth line counts to estimate ages at death. They found that the complex survivorship pattern is remarkably similar to that seen in living large mammals. High newborn mortality rates due to predation alone subside once a threshold size is reached and it appears that...

Quitting smoking improves lung function considerably

...group also showed a reduction in sputum neutrophil counts when compared to those of smokers. Neutrophils are...ith ingesting foreign debris. "Sputum neutrophil counts are reported to be increased in heavy smokers with asthma compared with nonsmokers with asthma," sai...

Bacteria can help predict ocean change

...used statistical methods to correlate the bacteria counts with the Wrigley Institute's monthly measurements of water temperature, salinity, nutrient content, plant matter and other variables. The researchers found they could predict the makeup of the bacterial population by the conditions in the water mor...

Study links high levels of nitric oxide to infertility and sperm DNA damage

...rm donors. Most of the infertile men had low sperm counts or poor sperm motility. They measured levels of NO and used a test that can detect DNA damage and repair in individual cells (single cell gel electrophoresis (comet) assay) to determine DNA damage. "We found that the NO levels in the infertile men w...

Ammonia-loving archaea win landslide majority

...nt residents in the soil. Crenarchaeotal gene counts also do not change with soil depth, while bacterial gene counts drop significantly as one goes deeper. "It might mean that they can oxidize ammonia at least wit...

Microbes hitchhike across Atlantic on desert dust

...ld be detected and also to see if total population counts increased with the presence of airborne desert dust. "The phenomenon known as desert-dust storms moves an estimated 2.2 billion metric tons of soil and dried sediment through the Earth's atmosphere each year. The largest of these events is capable ...

UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery

...ied on blood measurements of viral load and T-cell counts when choosing a course of treatment. Viral load is... particles in a milliliter sample of blood. T-cell counts reflect the number of CD4+ T-cells in the sample. These cells, also called T-helper cells, organize ...

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