834,224 articles

Elusive matter found to be abundant far above Earth

(PhysOrg.com) -- Cold plasma has been well-hidden. Space physicists have long lacked clues to how much of this electrically charged gas exists tens of thousands of miles above Earth and how the stuff may impact our planet's interaction with the sun. Now, a new method developed by Swedish researchers makes cold plasma measurable and reveals significantly more cold, charged ions in Earth's upper...

Entry point for hepatitis C infection identified

A molecule embedded in the membrane of human liver cells that aids in cholesterol absorption also allows the entry of hepatitis C virus, the first step in hepatitis C infection, according to research at the University of Illinois at Chicago College of Medicine.

Gene therapy is a 'disruptive science' ready for commercial development

The time for commercial development of gene therapy has come. Patients with diseases treatable and curable with gene therapy deserve access to the technology, which has demonstrated both its effectiveness and feasibility, says James Wilson, MD, PhD, Editor-in-Chief of Human Gene Therapy in a provocative commentary and accompanying videocast. Human Gene Therapy and Human Gene Therapy (HGT) Methods...

Genetic variation increases risk of metabolic side effects in children on some antipsychotics

Researchers have found a genetic variation predisposing children to six-times greater risk of developing metabolic syndrome when taking second-generation anti-psychotic medications. Metabolic syndrome is a cluster of conditions that are risk factors for cardiovascular disease. The study showed a close association with two conditions in particular: high blood pressure and elevated fasting blood...

Improving crops from the roots up

Research involving scientists at The University of Nottingham has taken us a step closer to breeding hardier crops that can better adapt to different environmental conditions and fight off attack from parasites.

Membrane fusion a mystery no more

The many factors that contribute to how cells communicate and function at the most basic level are still not fully understood, but researchers at Baylor College of Medicine have uncovered a mechanism that helps explain how intracellular membranes fuse, and in the process, created a new physiological membrane fusion model.

Therapeutically useful stem cell derivatives in need of stability

Human stem cells capable of giving rise to any fetal or adult cell type are known as pluripotent stem cells. It is hoped that such cells, the most well known being human embryonic stem cells (hESCs), can be used to generate cell populations with therapeutic utility. In this context, neural derivatives of hESCs are being tested in clinical trials. However, Natalie Lefort and colleagues, at the...

Brown fat burns calories in adult humans

Brown fat burns calories to generate body heat in rodents and newborn humans. Recently, adult humans have also been found to possess brown fat, leading to the suggestion that increasing the amount of brown fat a person has will make them slimmer. However, it has never been shown definitively that adult human brown fat burns energy. But now, researchers in Canada have provided this...

Genetic variation increases risk of metabolic side effects in children on some antipsychotics

Researchers have found a genetic variation predisposing children to six-times greater risk of developing metabolic syndrome when taking second-generation anti-psychotic medications. Metabolic syndrome is a cluster of conditions that are risk factors for cardiovascular disease. The study showed a close association with two conditions in particular: high blood pressure and elevated fasting blood...

Membrane fusion a mystery no more

The many factors that contribute to how cells communicate and function at the most basic level are still not fully understood, but researchers have uncovered a mechanism that helps explain how intracellular membranes fuse, and in the process, created a new physiological membrane fusion...

Therapeutically useful stem cell derivatives in need of stability

Human stem cells capable of giving rise to any fetal or adult cell type are known as pluripotent stem cells. It is hoped that human embryonic stem cells can be used to generate cell populations with therapeutic utility. In this context, neural derivatives of hESCs are being tested in clinical trials. However, researchers in France have now generated cautionary data that suggest that additional...

Wasp found in upstate New York shows up in Southern California

In August 2010, an entomologist at the University of California, Riverside discovered a tiny fairyfly wasp in upstate New York that had never been seen in the United States until then. Nearly exactly a year later, he discovered the wasp in Irvine, Calif., strongly suggesting that the wasp is well established in the country. Called Gonatocerus ater, the 1-millimeter-long wasp was accidentally...

A parent's survival guide to lice

They're small, creepy and suck your blood. Every parent dreads it, but it's inevitable -- the "lice letter." Though a lice infestation is about as common as a cold, trying to rid your life of them can be as much of a head-scratcher as those disgusting bugs themselves. A pediatrician now gives tips for dealing with...