Brain

Nerve cells communicate with each other by means of electrical impulses. To create such an impulse, the cells exchange charged ions with their environment. However, the role played by the ever-present chloride channels remained obscure, although some theories predicted a relation between the chloride channel ClC-2 and epilepsy.

Amsterdam, The Netherlands, April 20, 2010 – Alzheimer's disease (AD) is a neurodegenerative disorder affecting millions of people worldwide and has become a major global concern. Uncontrolled oligomerization (aggregation) of Aβ peptide is the hallmark of AD and it is believed to be causally related to AD pathomechanism.

What does the smell of a good meal mean to you? It may mean more than you think. Specific odors that represent food or indicate danger are capable of altering an animal's lifespan and physiological profile by activating a small number of highly specialized sensory neurons, researchers at the University of Michigan, University of Houston, and Baylor College of Medicine have shown in a study publishing next week in the online, open-access journal PLoS Biology.

Receiving a cochlear implant before 18 months of age dramatically improves a deaf child's ability to hear, understand and, eventually, speak, according to a multicenter study led by scientists at Johns Hopkins.

Barbara McCrady and Elizabeth Epstein wanted to know whether cognitive behavior therapy worked better for alcohol-dependent women when delivered as couples therapy than when delivered as individual therapy. They reported recently that both treatment methods worked well, but women treated in couples therapy maintained their gains a bit better than those in individual therapy. Also, women suffering from depression in addition to alcohol-dependence did better in couples therapy. Their paper appeared recently in the Journal of Consulting and Clinical Psychology.

ST. PAUL, Minn. – New research shows a gene variant may help protect the memory and thinking skills of older people. The research will be published in the April 20, 2010, issue of Neurology®, the medical journal of the American Academy of Neurology.

"This is the first study to identify a protective relationship between this gene variant and cognitive function," said study author Alexandra Fiocco, PhD, with the University of California, San Francisco.

Three years ago, geneticists reported the startling discovery that nearly half of all people in the U.S. with European ancestry carry a variant of the fat mass and obesity associated (FTO) gene, which causes them to gain weight — from three to seven pounds, on average — but worse, puts them at risk for obesity.

Now, UCLA researchers have found that the same gene allele, which is also carried by roughly one-quarter of U.S. Hispanics, 15 percent of African Americans and 15 percent of Asian Americans, may have another deleterious effect.