Archive | August, 2009

Carbon monoxide linked to heart problems in elderly

New Haven, Conn. — Exposure to carbon monoxide, even at levels well below national limits, is associated with an increased risk of hospitalization for the elderly with heart problems, according to a study published today in Circulation: Journal of the American Heart Association.

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Acute impact on brain function in earthquake survivors

New research has found that the Wenchuan, China earthquake that occurred on 12 May 2008 had an acute impact on the brain function of physically healthy survivors and poses a risk to the mental health of these survivors.

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Hidden diversity in key environmental cleanup microbes found by systems biology assessment

Researchers have completed the first thorough, system-level assessment of the diversity of an environmentally important genus of microbes known as Shewanella. Microbes belonging to that genus frequently participate in bioremediation by confining and cleaning up contaminated areas in the environment.

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Human impacts and environmental factors are changing the northwest Atlantic ecosystem

Fish in U.S. waters from Cape Hatteras to the Canadian border have moved away from their traditional, long-time habitats over the past four decades because of fundamental changes in the regional ecosystem, according to a new report by NOAA researchers.

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NIH study reveals new genetic culprit in deadly skin cancer

Drawing on the power of DNA sequencing, National Institutes of Health researchers have identified a new group of genetic mutations involved in the deadliest form of skin cancer, melanoma.

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NASA satellite sees Hurricane Jimena explode in strength over 4 days

Hurricane Warnings are up for the southern Baja California, as powerful Category Four Hurricane Jimena threatens. Jimena developed over the weekend, and the infrared instrument on NASA’s Aqua satellite captured that explosive development.

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Silk-based optical waveguides meet biomedical needs

MEDFORD/SOMERVILLE, Mass.–There is a growing need for biocompatible photonic components for biomedical applications — from in vivo glucose monitoring to detecting harmful viruses or the telltale markers of Alzheimer’s. Optical waveguides are of particular interest because of their ability to manipulate and transport light in a controlled manner in a variety of configurations.

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Yerkes researchers show early life nurturing impacts later life relationships

Researchers at the Yerkes National Primate Research Center, Emory University, have demonstrated that prairie voles may be a useful model in understanding the neurochemistry of social behavior. By influencing early social experience in prairie voles, researchers hope to gain greater insight into what aspects of early social experience drive diversity in adult social behavior.

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Platinum nanocatalyst could aid drugmakers

HOUSTON — (Aug. 31, 2009) — Nanoparticles combining platinum and gold act as superefficient catalysts, but chemists have struggled to create them in an industrially useful form.

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Pheromones in commercial products

Scientists have always been puzzled by the science of pheromones, even with animals. The fact that dogs have a sense of smell we still do not understand. Certain smells attract dogs, and other repell. Yet, there is no way to measure or comprehend which dogs find attractive.

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Planned home birth with registered midwife as safe as hospital birth

The risk of infant death following planned home birth attended by a registered midwife does not differ from that of a planned hospital birth, found a study http://www.cmaj.ca/press/cmaj081869.pdf published in CMAJ (Canadian Medical Association Journal) www.cmaj.ca.

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The effect of economic recessions on population health

Paradoxically, mortality rates during economic recessions in developed countries decline rather than increase, according to an analysis http://www.cmaj.ca/press/cmaj090553.pdf in CMAJ (Canadian Medical Association Journal) www.cmja.ca

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Canada’s universal health care system should fund in-vitro fertilization

Canada should extend universal health coverage to fund in vitro fertilization (IVF) and intracytoplasmic sperm injection, writes Dr.

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Moths cloaked in color

Travelers to the neotropics — the tropical lands of the Americas — might be forgiven for thinking that all of the colorful insects flittering over sunny puddles or among dense forest understory are butterflies. In fact, many are not. Some are moths that have reinvented themselves as butterflies, converging on the daytime niche typically dominated by their less hairy relatives.

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Women, blacks, Medicare recipients less likely to be evaluated for liver transplantation

PITTSBURGH, Aug. 31 — Patient race, gender and insurance status influence decisions about who will go on to receive liver transplants, according to a University of Pittsburgh School of Medicine study.

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Open source DNA

In the chilling science fiction movie Gattaca, Ethan Hawke stars as a man with “inferior genes” who assumes another’s genetic identity to escape a dead-end future. The 1997 film illustrates the very real fear swirling around today’s genome research — fear that private genetic information could be used negatively against us.

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Natural compounds, chemotherapeutic drugs may become partners in cancer therapy

CORVALLIS, Ore. — Research in the Linus Pauling Institute at Oregon State University suggests that some natural food compounds, which previously have been studied for their ability to prevent cancer, may be able to play a more significant role in treating it — working side-by-side with the conventional drugs that are now used in chemotherapy.

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Heart failure: More or less malignant than cancer?

Barcelona, Spain, 30 August: A recently completed analysis of over one million hospital cases in Sweden during the period 1988 to 2004 has revealed that heart failure, relative to most common forms of cancer specific to men and women, represents a major health burden in respect to the risk of being hospitalised for the first time, poor overall survival and the number of premature life-years los

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