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Tag: "rates" at biology news

Prenatal exposure to famine increases risk of schizophrenia

... by researchers. The researchers found that birth rates (per 1,000) in Anhui decreased approximately 80 percent during the famine years from 28.28 in 1958 and 20.97 in 1959 to 8.61 in 1960 and 11.06 in 1961. Among births that occurred during the famine years, the risk of developing schizophrenia in later ...

Studies on human genome variation provide insight into disease

...t traffic of genetic material ?regions with higher rates of gene conversion or recombination ?that are indicative of genomic instability," explains Morrow. "With this knowledge in hand, we hope to screen our patients and identify the genomic mechanism underlying this important disease," says Morrow. Cont...

Housecat-sized Siberian tiger cubs get collared

...t traffic of genetic material ?regions with higher rates of gene conversion or recombination ?that are indicative of genomic instability," explains Morrow. "With this knowledge in hand, we hope to screen our patients and identify the genomic mechanism underlying this important disease," says Morrow. Cont...

Researcher says flu responders can learn from 1918 epidemic

... that the areas that suffered the lowest mortality rates included Bethlehem, which benefited from the resources provided by the then-prosperous Bethlehem Steel. "At the time, Bethlehem Steel produced more munitions than Great Britain and France combined, and the plant could not afford to shut down for i...

Hand sanitizer gel works

...se hand sanitizer. The two groups reported similar rates of handwashing on an initial questionnaire. For five months, investigators tracked the families, phoning every other week to record how much hand sanitizer had been used, whether someone had developed a respiratory or GI infection, and whether the i...

Many smokers fail to quit after cancer diagnosis

...ects of treatment may be exacerbated, and survival rates are lower. Quality of life (QOL) is also better in nonsmokers. For example, multiple studies found that compared to nonsmokers, current smokers had significantly worse physical and psychological daily functioning. Clinical guidelines for generalized...

PLoS Medicine publishes first trial of effect of male circumcision on HIV infection

...outh Africa by about 60%. Because HIV infection rates are generally lower among African groups where cir...transmission. However, because the lower infection rates in the circumcised groups might be due to some other difference between circumcised and uncircumcise...

A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist

...mbiotic bacteria have undergone exceptionally fast rates of protein evolution despite having precisely main...th their hosts, and this may account for the rapid rates of protein evolution observed. In addition, protein sequences of the two Blochmannia species exhibi...

Past illegal blood donation in China linked to hepatitis C virus infection

...ices led to high hepatitis C virus (HCV) infection rates in blood and plasma donors during the 1980s and ea...d and blood samples tested for HCV antibodies. HCV rates were 8% in all participants, 28% in former plasma/blood donors, and about 3% in non-donors. Selling ...

Scientists must offer solutions for conserving tropical forests in a rapidly changing world

...sing; and at La Selva, Costa Rica, diameter-growth rates decreased among surviving individuals for cohorts of nine species measured annually for 17 years. These mysterious changes may be caused by large-scale drivers, such as increasing carbon dioxide in the atmosphere, intense droughts, or other poorly u...

Seafloor creatures destroyed by ice action during ice ages

...elsewhere in the oceans. They have lower metabolic rates that lower their growth and reproductive rates. Elsewhere in the oceans, a brisingid starfish would reproduce annually and live for ten years. In the Antarctic these starfish can reach 100-years-old but reproduce only once every ten years. This means...

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

...elsewhere in the oceans. They have lower metabolic rates that lower their growth and reproductive rates. Elsewhere in the oceans, a brisingid starfish would reproduce annually and live for ten years. In the Antarctic these starfish can reach 100-years-old but reproduce only once every ten years. This means...

Reducing antibiotic use lowers rates of drug-resistant bacteria

...ric respiratory tract infections resulted in lower rates of carriage of drug-resistant bacteria. Drug-res... pneumococcal colonization in areas that have high rates of drug-resistant bacteria, according to the study. In essence, doctors can make their own jobs easi...

Researchers identify molecular anchor that allows bacterial invasion of central nervous system

...s with the blood-brain barrier, reducing mortality rates up to 90 percent in mice. "Mice that were infecte... early acting treatment would help reduce the high rates of disability and death. "Previous studies have found that Streptococcus bacteria from infants with...

Oil spills and climate change double the mortality rate of British seabirds

..., the impact of oil pollution on seabird mortality rates at a particular colony was difficult to quantify a... events and a twofold increase in winter mortality rates of common guillemots. "Our research has also shown that the NAO index has had a significant effect...

2005 AIDS figures released by WHO and UNAIDS

...s. There is new evidence that adult HIV infection rates have decreased in certain countries and that chang...er the past few years with overall adult infection rates decreasing in Kenya from a peak of 10% in the late 1990s to 7% in 2003 and evidence of drops in HIV ...

Earliest European Farmers Left Little Genetic Mark On Modern Europe

...s. There is new evidence that adult HIV infection rates have decreased in certain countries and that chang...er the past few years with overall adult infection rates decreasing in Kenya from a peak of 10% in the late 1990s to 7% in 2003 and evidence of drops in HIV ...

Cattle grazing may help rather than hurt endangered species

... tiger salamanders. Cattle grazing influences the rates of evaporation which work together with climate to determine the depth and duration of wetland flooding. Cattle have been grazing in the land for roughly 150 years and have become a naturalized part of the ecosystem. "In practical terms, this means...

HIV drug resistance increasing in UK and among highest in the world

...nfected with HIV in the UK have one of the highest rates of resistance to anti-HIV drugs of anywhere in the...'The United Kingdom has among the highest reported rates of primary resistance to HIV drugs worldwide. By limiting the therapeutic options for a significant ...

Novel protein complex enables survival in hostile environment

...fusion event." "From the affinities and reaction rates it is clear that the enzyme will sense even a minute amount of sulfite and will neutralize even a large amount of sulfite very quickly. These properties suited the need of the ancient methanogens when oxygen appeared on earth," Mukhopadhyay said. "Bu...

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