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Sunday, January 18, 2015

ScienceDaily: Top Health News

ScienceDaily: Top Health News

Exploring the use of alcohol-interactive prescription medication among US drinkers

Posted: 17 Jan 2015 07:43 AM PST

Approximately 71 percent of American adults drink alcohol. While alcohol interacts negatively with a number of commonly prescribed medications, little is known on a population level about the use of alcohol-interactive prescription medication among US drinkers. A new study has found that almost 42 percent of drinkers in the US population have used one or more alcohol-interactive prescription medications.

Adolescents who sleep poorly, insufficiently may develop alcohol, drug problems

Posted: 17 Jan 2015 07:43 AM PST

Sleep difficulties and insufficient sleep are common among American youth. New research has found that sleep difficulties can predict specific substance-related problems.Problems include binge drinking, driving under the influence of alcohol, and risky sexual behavior.

Genes, environment contribute to personal, peer drinking during adolescence and beyond

Posted: 17 Jan 2015 07:43 AM PST

Alcohol use typically begins during adolescence, in social settings, and is influenced by peer drinking. New findings indicate that both genetic and environmental factors contribute to the correlation between one's own drinking and peer drinking.The influence of genetic factors increases as an individual moves from adolescence into adulthood.

Pre-sleep drinking disrupts sleep

Posted: 17 Jan 2015 07:43 AM PST

For individuals who drink before sleeping, alcohol initially acts as a sedative -- marked by the delta frequency electroencephalogram (EEG) activity of Slow Wave Sleep (SWS) -- but is later associated with sleep disruption. A study of the effects of alcohol on sleep EEG power spectra in college students has found that pre-sleep drinking not only causes an initial increase in SWS-related delta power but also causes an increase in frontal alpha power, which is thought to reflect disturbed sleep.

Live imaging captures how blood stem cells take root in the body

Posted: 15 Jan 2015 10:47 AM PST

A see-through zebrafish and enhanced imaging provide the first direct glimpse of how blood stem cells take root in the body to generate blood. Researchers describe a surprisingly dynamic system that offers clues for improving bone marrow transplants, and for helping those transplants 'take.'

Good things come to those who wait?

Posted: 15 Jan 2015 10:47 AM PST

A team of scientists has found a causal link between the activation of serotonin neurons and the amount of time mice are willing to wait, and rejected a possible link between increased serotonin neuron activation and reward.

Novel precursor to neurodegeneration identified

Posted: 15 Jan 2015 10:47 AM PST

Alteration of lipid metabolism in brain cells promotes the formation of lipid droplets that presage the loss of neurons, report researchers. "There may be a better chance to interfere with disease progression by identifying these diseases at an early stage," researchers said. They are currently working to identify lipid droplets in live animals before the animals become sick.

Novel molecular mechanism involved in the formation of the skin

Posted: 15 Jan 2015 09:21 AM PST

The formation of human skin involves a cascade of biochemical signals, which are not well understood. However, they are very important since their failure may cause diseases, such as Atopic Dermatitis and skin cancers, which affect more than 25 percent of the human population. Researchers now discovered a new mechanism that regulates the differentiation of keratinocytes, the cells that make up most of the epidermis of the skin.
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