Early European had close Neanderthal ancestor

Early European had close Neanderthal ancestor

Neandertals became extinct about 40,000 years ago but contributed on average one to three percent to the genomes of present-day Eurasians. Researchers have now analyzed DNA from a 37,000 to 42,000-year-old human mandible from Oase Cave in Romania and have found that six to nine percent of this person's genome came from Neandertals, more than any other human sequenced to date.

One of the worst known invasive species discovered in the U.S.

The land planarian Platydemus manokwari, or New Guinea flatworm, is a highly invasive species, already reported in many territories in the Pacific area, and as well as in France. This is the only land planarian in the '100 worst invasive alien species' list and it has now been found in additional localities including islands in the Pacific area, Puerto Rico, the first record in the Caribbean, and the first report in mainland U.S., in Florida.

Hypertension drug isradipine may stop drug and alcohol addiction

Researchers at The University of Texas at Austin have successfully stopped cocaine and alcohol addiction in experiments using a drug already approved by the U.S. Food and Drug Administration (FDA) to treat high blood pressure. If the treatment is proven effective in humans, it would be the first of its kind -- one that could help prevent relapses by erasing the unconscious memories that underlie addiction.

The research is published this week in the journal Molecular Psychiatry.

Saying no to ACA Medicaid expansion costs states money

Twenty-one states have opted not to expand Medicaid under the Affordable Care Act (ACA), arguing that the expansion would be too expensive. But according to new research, the cost to hospitals from uncompensated care in those states roughly equals the cost of Medicaid expansion.

The study, “Hospitals as Insurers of Last Resort,” by economists at Northwestern University and Columbia University’s Mailman School of Public Health is released online today as a National Bureau of Economic Research working paper.

Pregnancy safer for women with lupus than previously thought

New findings may help ease concerns for women with lupus who are interested in having a child. A new study concludes that most women with lupus whose disease is not very active will have a safe pregnancy. The results are to publish online June 22 in Annals of Internal Medicine.

Scientists create synthetic membranes that grow like living cells

Chemists and biologists at UC San Diego have succeeded in designing and synthesizing an artificial cell membrane capable of sustaining continual growth, just like a living cell.

Their achievement, detailed in a paper published in this week's issue of the Proceedings of the National Academy of Sciences, will allow scientists to more accurately replicate the behavior of living cell membranes, which until now have been modeled only by synthetic cell membranes without the ability to add new phospholipids.

Clients lost in system when food banks, NGO health care closed

Safety-net agencies, such as food banks and nonprofits offering health care, serve vulnerable individuals who are uninsured or underinsured and help them connect with services, such as health care, legal aid and housing.

If 'black lives matter' really matter to you, stop Tweeting and start doing

The "Black Lives Matter" hashtag evolved as a call for social change aimed at recognizing racial inequality. Images of a young white sociopath being led to the police station after shooting up a black church side by side with video of police killing a black man who sold illegal cigarettes have made the issue clear - but there is more to making a difference than young white liberals retweeting each other and feeling like they have done their part. Social change is more dependent on nonverbal communication, according to a new paper.

Mechanism leading to BRAF inhibitor resistance in melanoma discovered

The development of targeted therapies has significantly improved the survival of melanoma patients over the last decade; however, patients often relapse because many therapies do not kill all of the tumor cells, and the remaining cells adapt to treatment and become resistant. Moffitt Cancer Center researchers have discovered a novel mechanism that can lead melanoma cells to develop resistance to drugs that target the protein BRAF.

Not like riding a bike: New motor memories need stabilizing

Well-practiced motor skills like riding a bike are extremely stable memories that can be effortlessly recalled after years or decades. In contrast, a new study publishing in PLOS Computational Biology shows that changes to motor skill memories occurring over the course of a single practice session are not immediately stable, according to researchers Andrew Brennan and Maurice Smith of Harvard University School of Engineering and Applied Science and Center for Brain Science.