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Study supports therapeutic potential of deep brain stimulation in patients with chronic psychiatric disorders

Using electrodes to stimulate areas deep within the brain may have therapeutic potential for patients with obsessive compulsive disorder that is refractory to treatment, according to a report in the October issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

5 Oct 2010

Cell aging is associated with reduced histone level

Like cats, human cells have a finite number of lives-once they divide a certain number of times they change shape, slow their pace, and eventually stop dividing, a phenomenon called cellular senescence.

4 Oct 2010

Researchers discover key leukemia defense mechanism

Virginia Commonwealth University Massey Cancer Center researcher Steven Grant, M.D., and a team of VCU Massey researchers have uncovered the mechanism by which leukemia cells trigger a protective response when exposed to a class of cancer-killing agents known as histone deacetylase inhibitors (HDACIs).

1 Oct 2010

New study shows peripheral nerves regenerate themselves after injury

Unlike nerves of the spinal cord, the peripheral nerves that connect our limbs and organs to the central nervous system have an astonishing ability to regenerate themselves after injury. Now, a new report in the October 1st issue of Cell, a Cell Press publication, offers new insight into how that healing process works.

28 Sep 2010

Scientists discover molecular playbook to block cardiac hypertrophy

Like a well-crafted football play designed to block the opposing team's offensive drive to the end zone, the body constantly executes complex 'plays' or sequences of events to initiate, or block, different actions or functions.

24 Sep 2010

Researchers report MALAT1 gene regulates pre-mRNA splicing in cancer

Researchers report this month that MALAT1, a long non-coding RNA that is implicated in certain cancers, regulates pre-mRNA splicing a critical step in the earliest stage of protein production. Their study appears in the journal Molecular Cell.

24 Sep 2010

Raltegravir could be valid target against all Herpesviridae

Scientists at the Institute for Research in Biomedicine (IRB Barcelona) headed by the coordinator of the Structural and Computational Biology Programme, Miquel Coll, have published a new study that demonstrates that raltegravir, the drug approved in 2007 for the treatment of AIDS that is sold by Merck under the name Isentress, cancels the function of an essential protein for the replication of one kind of herpes virus.

23 Sep 2010

SynCardia temporary Total Artificial Heart wins 2010 Kerrin Rennie Award

On Sept. 15, the SynCardia temporary Total Artificial Heart was awarded the 2010 Kerrin Rennie Award for Excellence in Medical Technology by the Medical Technology Association of Australia (MTAA).

23 Sep 2010

Deep brain stimulation improves OCD symptoms, promotes smoking cessation and weight loss

Electrical stimulation of the brain in a patient with severe obsessive-compulsive disorder (OCD) led to some unanticipated benefits—"effortless" smoking cessation and weight loss, according to a case report in the September issue of Neurosurgery, official journal of the Congress of Neurological Surgeons.

22 Sep 2010

National Science Foundation awards UofL researcher $500,000 for nervous system study

Michal Hetman, MD, PhD, associate professor and endowed chair in molecular signaling in the Kentucky Spinal Cord Injury Research Center and the UofL Department of Neurological Surgery, has received a three-year, $500,000 grant from the National Science Foundation to fund a project that will aim to explain how the nervous system grows and develops.

21 Sep 2010

Improper biological clocks tend to develop diabetes, obesity: Research

Biologists have found that a key protein that regulates the biological clocks of mammals also regulates glucose production in the liver and that altering the levels of this protein can improve the health of diabetic mice.

20 Sep 2010

New genetic analysis technique isolates culprit gene in families with inherited single-gene kidney diseases

A University of Michigan-led research team has identified a gene responsible in some families for a devastating inherited kidney disorder, thanks to a new, faster method of genetic analysis not available even two years ago. The success offers hope that scientists can speed the painstaking search for the genes responsible for many rare diseases and test drugs to treat them.

17 Sep 2010

Medtronic Deep Brain Stimulation Therapy for severe epilepsy receives CE Mark approval

Medtronic, Inc. today announced that the company has received CE (Conformité Européenne) Mark approval for Medtronic Deep Brain Stimulation (DBS) Therapy in Europe as adjunctive treatment for partial-onset seizures in adults with medically refractory epilepsy. DBS therapy for epilepsy delivers controlled electrical pulses to a target in the brain called the anterior nucleus of the thalamus, which is part of a circuit involved in seizures.

17 Sep 2010

Researchers reveal new way of restraining beta-catenin to suppress tumor metastasis

Researchers reveal a new way in which cells restrain beta-catenin and potentially suppress tumor metastasis, the protein can be ejected from cells in small vesicles called exosomes. The study appears online on September 13 in the Journal of Cell Biology.

14 Sep 2010

Scientists discover sensor in dendritic cells that recognizes HIV

Dendritic cells are the grand sentinels of the immune system, standing guard 24/7 to detect foreign invaders such as viruses and bacteria, and bring news of the invasion to other immune cells to marshal an attack. These sentinels, however, nearly always fail to respond adequately to HIV, the virus causing AIDS. Now a team of scientists at NYU Langone Medical Center has discovered a sensor in dendritic cells that recognizes HIV, spurring a more potent immune response by the sentinels to the virus.

9 Sep 2010

Cell-to-cell signaling pathway that designates future location of ear's sensory organs tracked

Researchers have tracked a cell-to-cell signaling pathway that designates the future location of the ear's sensory organs in embryonic mice. The scientists succeeded in activating this signal more widely across the embryonic tissue that becomes the inner ear. Patches of sensory structures began growing in spots where they don't normally appear.

30 Aug 2010

Scientists create novel map of lipid locations in single cell

In real estate, location is everything. The same might be said of lipids - those crucial cellular fats and oils that serve as building blocks for cells and as key energy sources for the body.In a paper published in the September issue of the Journal of Lipid Research, a team of scientists, led by researchers at the University of California, San Diego School of Medicine, has mapped for the first time the actual locations of specific lipids within a single cell.

26 Aug 2010

Research finds adenovirus impact on cell's suicide program pave way for new cancer therapy

A novel mechanism used by adenovirus to sidestep the cell's suicide program, could go a long way to explain how tumor suppressor genes are silenced in tumor cells and pave the way for a new type of targeted cancer therapy, report researchers at the Salk Institute for Biological Studies in the Aug. 26, 2010 issue of Nature.

26 Aug 2010

Research on OGF-OGFr complex helps to understand pathobiology of diseases

Researchers at The Pennsylvania State University College of Medicine, Hershey, Pennsylvania have discovered that the Opioid Growth Factor (OGF, [Met5]-enkephalin) and its receptor, OGFr, a clinically important system with potent antitumor properties, has controlled entry from the cytoplasm to the nucleus. The nucleocytoplasmic passage of OGF-OGFr is critical to cell proliferation and suggests that there are hierarchical levels of nuclear import.

24 Aug 2010

MeCP2 protein regulates properties of psychostimulant drugs: Research

When a certain protein is mutated or missing, symptoms of the neurodevelopmental disorder Rett syndrome arise, causing a gradual loss of brain function during early development.This fact led Duke University Medical Center researchers to test a theory that the protein might also contribute to nerve-cell connection (synapse) changes in a fully formed adult mouse brain when exposed to psychostimulant use.

16 Aug 2010