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Reducing variety in food choices may help lose weight

Variety is considered the "spice of life," but does today's unprecedented level of dietary variety help explain skyrocketing rates of obesity? Some researchers think it might.

21 Jul 2011

Researchers discover novel combination of two mutations in a patient with ADHD

Often enough, in science as in life, unexpected knowledge has a personal impact. Researchers seeking rare gene variants in just a few individuals with attention-deficit hyperactivity disorder (ADHD) discovered that one patient had a novel combination of two mutations.

21 Jul 2011

World's best genetic map now built in African-Americans

A group of researchers from the University of Oxford, Harvard Medical School and the University of Mississippi Medical Center has constructed the world's most detailed genetic map, a tool scientists can use to better understand the roots of disease and how DNA is passed generationally to create diversity in the human species.

21 Jul 2011

Experts to explore wound healing abilities of dolphins

A Georgetown University Medical Center (GUMC) scientist who has previously discovered antimicrobial compounds in the skin of frogs and in the dogfish shark has now turned his attention to the remarkable wound healing abilities of dolphins.

21 Jul 2011

New strategy for improving development of induced pluripotent stem cells

University of Minnesota Medical School researchers have developed a new strategy to improve the development of induced pluripotent stem cells.

21 Jul 2011

Cell biologists identify infection mechanism of adenoviruses

Mucosal epithelia do not have any receptors on the outer membrane for the absorption of viruses like hepatitis C, herpes, the adenovirus or polio, and are thus well-protected against pathogenic germs. However, certain viruses, such as the human immunodeficiency virus HIV, still manage to enter the body via the mucous membrane.

21 Jul 2011

Researchers develop mouse model of rare human birth defect

A team of researchers from the University of Utah and Brigham Young University has developed a mouse model of focal dermal hypoplasia, a rare human birth defect that causes serious skin abnormalities and other medical problems. This animal model not only provides insight into studying the cause of focal dermal hypoplasia (FDH), but also offers a novel way to study a signaling pathway that is crucial for embryonic development.

21 Jul 2011

New vaccine formulation may help heroin addicts maintain abstinence

Scientists are reporting development and successful initial laboratory tests on the key ingredient for a much-needed vaccine to help individuals addicted to heroin abstain from the illicit drug. Their study appears in ACS' Journal of Medicinal Chemistry.

21 Jul 2011

Promising compounds for new anti-obesity drugs

Though it generally is known that obesity dramatically increases the risk for type 2 diabetes, the biological mechanisms for that connection still are unclear.

21 Jul 2011

Clinical study of anti-HIV antibody made from genetically modified tobacco plants

Pharmaceuticals can be produced by plants. Antibodies that have been produced in tobacco plants will now for the first time be tested in a clinical study.

21 Jul 2011

Lonza, Cellectis reach milestone in development of newly bioengineered cell line

Cellectis bioresearch, the genome customization specialist and a commercial subsidiary of Cellectis, and Lonza, a world leader in biotechnology production, announce today that they have reached a significant milestone in the development of a newly bioengineered cell line.

21 Jul 2011

Excess brain activity in aMCI patients contributes to brain dysfunction underlying memory loss

An existing anti-seizure drug improves memory and brain function in adults with a form of cognitive impairment that often leads to full-blown Alzheimer's disease, a Johns Hopkins University study has found.

21 Jul 2011

Key finding sheds new light on common bleeding disorders

A simple cut to the skin unleashes a complex cascade of chemistry to stem the flow of blood. Now, scientists at Washington University School of Medicine in St. Louis have used evolutionary clues to reveal how a key clotting protein assembles. The finding sheds new light on common bleeding disorders.

21 Jul 2011

Genetically engineered excitable cells made to generate and pass electrical current

By altering the genetic makeup of normally "unexcitable" cells, Duke University bioengineers have turned them into cells capable of generating and passing electrical current.

21 Jul 2011

Localized one-time gene therapy might effectively protect against atherosclerosis

A one-dose method for delivering gene therapy into an arterial wall effectively protects the artery from developing atherosclerosis despite ongoing high blood cholesterol.

21 Jul 2011

Receptor GPR56 could have a critical role in cancer progression

Melanoma is devastating on many fronts: rates are rising dramatically among young people, it is deadly if not caught early, and from a biological standpoint, the disease tends to adapt to even the most modern therapies, known as VEGF inhibitors.

21 Jul 2011

Caffeine reduces women's chances of becoming pregnant

Caffeine reduces muscle activity in the Fallopian tubes that carry eggs from a woman's ovaries to her womb. "Our experiments were conducted in mice, but this finding goes a long way towards explaining why drinking caffeinated drinks can reduce a woman's chance of becoming pregnant," says Sean Ward, professor of physiology and cell biology, at the University of Nevada School of Medicine, who conducted the study.

21 Jul 2011

New rapid test accurately distinguishes bacterial and viral infections

Researchers at Ben-Gurion University of the Negev (BGU) have developed a new test that quickly and accurately distinguishes between bacterial and viral infections in as little as five hours.

21 Jul 2011

Loss of critical male development gene causes male cells to become female

University of Minnesota Medical School and College of Biological Sciences researchers have made a key discovery showing that male sex must be maintained throughout life.

21 Jul 2011

Inherited forms of Alzheimer's could be detected long before memory problems develop

Inherited forms of Alzheimer's disease may be detectable as many as 20 years before problems with memory and thinking develop, scientists will report July 20, 2011, at the Alzheimer's Association International Conference on Alzheimer's Disease in Paris.

21 Jul 2011