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Native Americans and Northern Europeans more closely related than previously thought 2013-01-09

By Genetics Society of America

Using genetic analyses, scientists have discovered that Northern European populations descend from a mixture of two very different ancestral populations, and one of these populations is related to Native Americans.

Breakthrough in the understanding of embryonic stem cells 2013-01-09

By Trinity College Dublin

A significant breakthrough in the understanding of embryonic stem cells has been made. New research describes the process whereby genes that are 'on' in embryonic stem cells are switched 'off'. This process is essential in order to convert embryonic stem

Sneak peek at early course of bladder infection caused by widespread, understudied parasite 2013-01-08

By Stanford University Medical Center

Using standard tools of the molecular-biology trade and a new, much-improved animal model of a prevalent but poorly understood tropical parasitic disease called urogenital schistosomiasis, researchers were able to obtain "snapshots" of shifting

Scientists identify key biological mechanism in multiple sclerosis 2013-01-08

By Gladstone Institutes

Scientists have defined for the first time a key underlying process implicated in multiple sclerosis -- a disease that causes progressive and irreversible damage to nerve cells in the brain and spinal cord. This discovery offers new hope for the millions

Guineafowl may spread, not halt, fever-bearing ticks in turkey 2013-01-08

By University of Utah

The country Turkey releases non-native guineafowl to eat ticks that carry deadly Crimean-Congo hemorrhagic fever. Yet research suggests guineafowl eat few ticks, but carry the parasites on their feathers, possibly spreading the disease they were meant to

Obese children more vulnerable to food advertising 2013-01-08

By Elsevier

Rates of childhood obesity have tripled in the past 30 years, and food marketing has been implicated as one factor contributing to this trend. Every year, companies spend more than $10 billion in the US marketing their food and beverages to childr

Advances in understanding of the mechanisms of drug resistance to dual-agent chemotherapy in recurrent ovarian cancer 2013-01-08

By BioMed Central Limited

More than half of all patients with ovarian cancer experience recurrent disease and will eventually fail to respond to chemotherapy. The failure of chemotherapy is usually due to the development of resistance to the two main classes of chemotherapy agents

New patient-friendly way to make stem cells for fight against heart disease 2013-01-08

By University of Cambridge

Scientists have developed a patient-friendly and efficient way to make stem cells out of blood, increasing the hope that scientists could one day use stem cells made from patients' own cells to treat cardiovascular disease.

Could mistletoe give the kiss of death to cancer? 2013-01-08

By University of Adelaide

Mistletoe has become an important symbol of Christmas, but it also has the potential to play a vital role as an alternative therapy for sufferers of colon cancer.

As cigarette taxes go up, heavy smoking goes down 2013-01-08

By Washington University in St. Louis

When cigarette taxes rise, hard-core smokers are more likely than lighter smokers to cut back, according to new research.

Exposing the achilles' heel of the AIDS virus 2013-01-08

By Elhuyar Fundazioa

Researchers have been studying HIV regions that could be used to design a vaccine. One scientist has focused her research on a specific region of the surface protein of the Human Immunodeficiency Virus (HIV), which is responsible for the Autoimmune Defici

Pathway to bypass DNA lesions in replication process is experimentally shown 2013-01-08

By Universidad de Barcelona

DNA lesions are really common —- about one million individual molecular lesions per cell per day -— because its long strands usually have one missing base or are damaged. These lesions can stall the DNA replication process, what can le

Hospital cleaning protocol ineffective against multidrug-resistant A. Baumannii 2013-01-08

By Elsevier

Current hospital cleaning protocol may be inadequate to rid patient rooms of multidrug-resistant (MDR) Acinetobacter baumannii.

Electrically spun fabric offers dual defense against pregnancy, HIV 2013-01-08

By University of Washington

Electrically spun cloth with nanometer-sized fibers show promise as a cheap, versatile platform to simultaneously offer contraception and prevent HIV.

Nanobiotechnology: Versatile 3-D nanostructures using DNA 'bricks' 2013-01-08

By Wyss Institute for Biologically Inspired Engineering at Harvard

Researchers have created more than 100 three-dimensional nanostructures using DNA building blocks that function like Lego bricks -- a major advance from the two-dimensional structures the same team built a few months ago.

Jigsaw a critical piece of the Notch puzzle 2013-01-08

By S. Yamamoto

The Notch signaling pathway helps determine cell fate determination, differentiation and proliferative ability of numerous cells. How it accomplishes these tasks has been a puzzle, but researchers have identified a key piece -- a specific domain within

X-ray laser helps fight sleeping sickness: Exploiting parasite's weak spot may lead to new treatments 2013-01-08

By Lars Redecke

Scientists have mapped a weak spot in the parasite that causes African sleeping sickness, pinpointing a promising new target for treating a disease that kills tens of thousands of people each year.

Body language, not facial expressions, broadcasts what's happening to us 2013-01-08

By H. Aviezer, Y. Trope, A. Todorov

If you think that you can judge by examining someone's facial expressions if he has just hit the jackpot in the lottery or lost everything in the stock market -- think again. Researchers have discovered that -- despite what leading theoretical models a

Resolving debate about how tumors spread 2013-01-08

By University of California, San Diego Health Sciences

Scientists have shown for the first time how cancer cells control the ON/OFF switch of a program used by developing embryos to effectively metastasize in vivo, breaking free and spreading to other parts of the body, where they can proliferate and grow int

Precisely engineering 3-D brain tissues 2013-01-08

By Massachusetts Institute of Technology

Borrowing from microfabrication techniques used in the semiconductor industry, engineers have developed a simple and inexpensive way to create three-dimensional brain tissues in a lab dish.

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