Saturday, April 02, 2011

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News

The Population Bomb: How we survived it

Posted: 01 Apr 2011 05:34 PM PDT

World population will reach 7 billion this year, prompting new concerns about whether the world will soon face a major population crisis.

New biomarker for tau-related brain disorders? Study suggests another avenue for detecting Alzheimer's disease

Posted: 01 Apr 2011 01:15 PM PDT

Researchers have determined that a well-known chemical process called acetylation has a previously unrecognized association with one of the biological processes associated with Alzheimer's disease and related disorders. Acetylation was only detected in diseased brain tissue from patients with Alzheimer's disease or frontotemporal degeneration, suggesting it may have a role in tau transformation linked to disease onset and progression.

Insulin could be Alzheimer's therapy

Posted: 01 Apr 2011 11:29 AM PDT

A low dose of insulin has been found to suppress the expression in the blood of four precursor proteins involved in the pathogenesis of Alzheimer's disease, according to new clinical research.

Surprising finding from smoke inhalation study

Posted: 01 Apr 2011 11:28 AM PDT

A new study includes some unexpected findings about the immune systems of smoke-inhalation patients. Contrary to expectations, patients who died from their injuries had lower inflammatory responses in their lungs than patients who survived.

Parents trust doctors most when it comes to information about vaccine safety

Posted: 01 Apr 2011 11:28 AM PDT

Most parents get their information about vaccines from their children's doctors, but some also consider public health officials, other parents, friends and family members and even celebrities as sources of vaccine information.

Many US women have children by more than one man

Posted: 01 Apr 2011 11:28 AM PDT

The first national study of the prevalence of multiple partner fertility shows that 28 percent of all US women with two or more children have children by more than one man.

MicroRNA role in brain metastasis: Biomarkers help predict lung cancer patients whose disease could spread to the brain

Posted: 01 Apr 2011 09:14 AM PDT

Conducting genetic profiles using microRNA can help doctors predict which lung cancer patients are likely to also develop brain metastasis, according to a new study.

Out of work? Your resume is no good here: Unemployed Americans face discrimination, study finds

Posted: 01 Apr 2011 09:14 AM PDT

Through a series of simple experiments, researchers found that unemployed Americans face discrimination that is unrelated to their skills or conditions of departure.

When food is scarce, hungry female spiders alter mating preferences

Posted: 01 Apr 2011 09:14 AM PDT

Weather and environmental change can bring alterations -- and scarcity -- in food resources. In looking at how such changes might affect mating choices and subsequent reproduction, researchers studied how hunger affects the mating preferences of common female spiders.

The future looks bright for HCV patients who have failed to respond to current treatments

Posted: 01 Apr 2011 09:13 AM PDT

Highly anticipated data from a number of clinical trials presented for the first time at the International Liver Congress confirmed that a range of new proteases inhibitors will help treat patients who have previously failed therapy for the treatment of chronic hepatitis C.

Ants and termites boost dryland wheat yields

Posted: 01 Apr 2011 08:14 AM PDT

Ants and termites have a significant positive impact on crop yields in dryland agriculture, according to scientists in Australia.

Foodborne Illness? E. coli an unlikely contaminant of plant vascular systems

Posted: 01 Apr 2011 08:14 AM PDT

A technique developed for tracking pathogens has helped confirm that Escherichia coli is not likely to contaminate the internal vascular structure of field-grown leafy greens and thus increase the incidence of foodborne illness.

Spread of invasive ladybugs explained

Posted: 01 Apr 2011 08:13 AM PDT

A researcher studying invasive ladybugs has developed new models that help explain how these insects have spread so quickly and their potential impacts on native species.

Skywalker enzyme ensures optimal communication between neurons

Posted: 01 Apr 2011 08:13 AM PDT

Scientists have discovered the mechanism that ensures neurons can continue to send the right signals for long consecutive periods -- a process that is disrupted in neurological diseases such as Parkinson's. They discovered that an enzyme called Skywalker controls the subtle balance in communication.

Why stem cells don't just want to make neurons

Posted: 01 Apr 2011 05:56 AM PDT

New research provides another piece in the puzzle of why it can be so hard to produce large numbers of the same type of cell in the lab -- a process that is vital for scaling up stem cell production for therapeutic use. This knowledge will help researchers to develop strategies for obtaining the desired cell type for use in either research or medicine.

Got a craving for fast food? Skip the coffee, study suggests

Posted: 01 Apr 2011 05:56 AM PDT

A new study has revealed not only that a healthy person's blood sugar levels spike after eating a high-fat meal, but that the spike doubles after having both a fatty meal and caffeinated coffee -- jumping to levels similar to those of people at risk for diabetes. Ultimately, saturated fat and fat combined with caffeinated coffee hinder the body's ability to clear sugar from the blood and having high blood sugar levels can take a toll on our body's organs.

New lung cancer staging system (TNM 7) better predicts local/regional recurrence, study shows

Posted: 01 Apr 2011 05:56 AM PDT

The new TNM 7 lung cancer staging system seems to be a better predictor of local or regional recurrence of lung cancer following surgery, according to a new study.

Soy increases radiation's ability to kill lung cancer cells, study shows

Posted: 01 Apr 2011 05:55 AM PDT

A component in soybeans increases radiation's ability to kill lung cancer cells, according to a new study.

Manage biological invasions like natural disasters, biologists say

Posted: 01 Apr 2011 05:55 AM PDT

Biological invasions are often more economically damaging than natural disasters and warrant correspondingly large investments in preparedness and response planning, according to biologists. Such measures seem absent in most developed nations.

Sugar-grain sized meteorites rocked the climates of early Earth and Mars, according to new study

Posted: 01 Apr 2011 05:53 AM PDT

Bombardments of 'micro-meteorites' on Earth and Mars four billion years ago may have caused the planets' climates to cool dramatically, hampering their ability to support life, according to new research.

World first: Calculations with 14 quantum bits

Posted: 01 Apr 2011 05:51 AM PDT

Quantum physicists have now achieved controlled entanglement of 14 quantum bits (qubits) and, thus, realized the largest quantum register that has ever been produced. With this experiment the scientists have not only come closer to the realization of a quantum computer but they also show surprising results for the quantum mechanical phenomenon of entanglement.

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