Brain

Cold Spring Harbor, NY -- A team of neuroscientists at Cold Spring Harbor Laboratory (CSHL), Brookhaven National Laboratory (BNL) and UC San Diego (UCSD) has collected evidence suggesting that a previously overlooked portion of the brain could be a prime locus of human depression.

In two rat models of human depression, the scientists have demonstrated that neurons in a tiny area in the central brain called the lateral habenula (LHb) are hyperactive.

UPTON, NY - Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Cold Spring Harbor Laboratory, and the University of California, San Diego School of Medicine, have identified hyperactive cells in a tiny brain structure that may play an important role in depression. The study, conducted in rats and appearing in the February 24, 2011, issue of Nature, is helping to reveal a cellular mechanism for depressive disorders that could lead to new, effective treatments.

High blood levels of a hormone produced in response to stress are linked to post-traumatic stress disorder in women but not men, a study from researchers at Emory University and the University of Vermont has found.

The results are scheduled for publication in the Feb. 24 issue of Nature.

In a major advance for schizophrenia research, an international team of scientists led by the University of California, San Diego School of Medicine and involving Trinity College Dublin researchers has identified a gene mutation strongly linked to schizophrenia that may be an important new target for the development of drug therapies. The findings are just published in the online issue of the journal Nature.

Addiction is a brain disease that destroys lives, devastates families and tears at the very fabric of society. Effective prevention and treatment of addiction requires a clear understanding of the complex brain mechanisms that underlie addictive behaviors, and research has provided a fascinating view of how substance abuse hijacks neuronal circuits involved in reward and motivation and causes profound and persistent changes in behavior.

Boston, MA -- A U.S.-Chile collaboration is bringing surgical patients closer to having a long-acting local anesthetic. In a randomized, double-blind trial, patients given neosaxitoxin, a new local anesthetic derived from algae, had significantly less postoperative pain and recovered about two days sooner than those given the commonly used local anesthetic bupivacaine.

Scientists who examined more than 10,000 chemical compounds during the last year in search of potential new drugs for a group of untreatable brain diseases, are reporting that one substance shows unusual promise. The early positive signs for so-called prion diseases come from research in laboratory mice and cell cultures, they say in a report in ACS' Journal of Medicinal Chemistry.

Philadelphia, PA, 23 February 2011 - Understanding the genetics of bipolar disorder could lead to new treatments, but identifying specific genetic variations associated with this disorder has been challenging.

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Drivers aged over 60 have higher crash rates in non problematic operating environments –as in junctions– than drivers of other age groups. Although elderly drivers present deteriorated driving abilities, they have proved to be more cautious, to compensate such deficiencies. This way, older drivers avoid engaging in risky behaviours like speeding, passing dangerously or driving under the effects of alcohol.

ST. PAUL, Minn. – People who speak more than two languages may lower their risk of developing memory problems, according a study released today that will be presented at the American Academy of Neurology's 63rd Annual Meeting in Honolulu April 9 to April 16, 2011.

In a preliminary study, researchers found that 50-minute cell phone use was associated with increased brain glucose metabolism (a marker of brain activity) in the region closest to the phone antenna, but the finding is of unknown clinical significance, according to a study in the February 23 issue of JAMA.

Irvine, Calif., Feb. 22, 2011 — Getting more exercise, spending time outdoors and helping others are among the activities that can be as effective as drugs or counseling in treating an array of mental illnesses, including depression and anxiety, according to a UC Irvine study.

EUGENE, Ore. -- Mothers who are depressed respond differently to their crying babies than do non-depressed moms. In fact, their reaction, according to brain scans at the University of Oregon, is much more muted than the robust brain activity in non-depressed moms.

Tampa, Fla. (Feb. 22, 2011) – Transplanting human umbilical cord blood-derived endothelial progenitor cells (EPCs) has been found to "significantly accelerate" wound closure in diabetic mouse models, said a team of Korean researchers publishing in the current issue of Cell Transplantation (19:12), now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/ .