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Researchers identify gene expression and biological pathways for healing gingivitis

Gingivitis, which may affect more than one-half of the U.S. adult population, is a condition commonly attributed to lapses in simple oral hygiene habits. However, a new study shows that development and reversal of gingivitis at the molecular level is apparently much more complicated than its causes might indicate.

8 Dec 2009

Social isolation and stress can raise breast cancer risk

Social isolation and related stress could contribute to human breast cancer susceptibility, research from a rat model designed at the University of Chicago to identify environmental mechanisms contributing to cancer risk shows.

8 Dec 2009

Multi-institutional team explores regenerative techniques for injured spinal cords

For more than 400 years, scientists have studied the amazing regenerative power of salamanders, trying to understand how these creatures routinely repair injuries that would usually leave humans and other mammals paralyzed - or worse.

8 Dec 2009

Scientists identify aggression-promoting pheromone in flies’ antenna

Have you ever found yourself struggling to get your order taken at a crowded bar or lunch counter, only to walk away in disgust as more aggressive customers elbow their way to the front? It turns out that flies do much the same thing, according to biologists from the California Institute of Technology (Caltech).

7 Dec 2009

TGFb growth factor controls spread of cancer cells

The spread, or metastasis, of individual breast cancer cells from the main tumor into the blood circulation to the lungs and other body tissues and organs is under the control of a growth factor abbreviated TGFb, according to a study with laboratory mice that will be presented at the American Society for Cell Biology (ASCB) 49th Annual Meeting, Dec. 5-9, 2009 in San Diego.

7 Dec 2009

Vitamin D supplements may aid in treating cancer

The findings support the growing association between vitamin D and cancer risk and outcomes, and suggest that vitamin D supplements might help even those patients already diagnosed with some forms of cancer, says Dr. Drake.

7 Dec 2009

New findings may yield more effective therapies for infants with blood cancer

Pediatric oncologists have identified specific genes, dubbed partner genes, that fuse with another gene to drive an often-fatal form of leukemia in infants. By more accurately defining specific partner genes, researchers expect to better predict which infants may benefit from particular treatments.

7 Dec 2009

Study explains how circadian rhythms can drive feeding and metabolism behaviors

One of the pioneers in research on sleep:wake circadian genes, Amita Sehgal, Ph.D., has discovered that fruit flies' appetite and consumption are controlled by two rival sets of clocks, one in neurons and the other in the fly fat body, which is analogous to the liver.

6 Dec 2009

New study reveals genetic alteration can lead to severe childhood obesity

Scientists in Cambridge have discovered that the loss of a key segment of DNA can lead to severe childhood obesity. This is the first study to show that this kind of genetic alteration can cause obesity. The results are published today in Nature.

6 Dec 2009

New treatment options for leukemia and myeloproliferative disorders introduced

Leukemia and myeloproliferative disorders are serious and often deadly blood cancers. Research presented today at the 51st Annual Meeting of the American Society of Hematology introduces potential new treatment options and improved diagnostic methods for patients suffering from acute promyelocytic leukemia, chronic myeloid leukemia, infant acute lymphoblastic leukemia, and myelofibrosis that are based on a better understanding of the underlying genetic causes of these conditions.

6 Dec 2009

Comparative study on African monkeys may provide novel targets for AIDS therapy

Two studies published this month in the Journal of Clinical Investigation provide a significant advance in understanding how some species of monkeys such as sooty mangabeys and African green monkeys avoid AIDS when infected with SIV, the simian equivalent of HIV.

5 Dec 2009

'Twist' gene plays a key role in the development of breast cancer

Working with mice, scientists at Johns Hopkins publishing in the December issue of Neoplasia have shown that a protein made by a gene called "Twist" may be the proverbial red flag that can accurately distinguish stem cells that drive aggressive, metastatic breast cancer from other breast cancer cells.

5 Dec 2009

New study helps understand the positive effect of dietary restriction on healthy ageing

A new study of the Max Planck Institute for Biology of Ageing could help to understand the positive effect of dietary restriction on healthy ageing.

5 Dec 2009

Humans and mice have critical differences in gene responsible for DMD

Humans and mice have previously unknown and potentially critical differences in one of the genes responsible for Duchenne muscular dystrophy (DMD). Researchers writing in the open access journal BMC Biology have found that two major features of a key DMD gene are present in most mammals, including humans, but are specifically absent in mice and rats, calling into question the use of the mouse as the principal model animal for studying DMD.

4 Dec 2009

Santaris Pharma's LNA technology based microRNA-targeted therapy holds promise for HCV

A study published online in this week's Science shows that SPC3649, a breakthrough microRNA-targeted therapy developed by Santaris Pharma A/S using its proprietary Locked Nucleic Acid (LNA) technology, holds promise as a novel treatment for patients infected with the Hepatitis C virus (HCV).

4 Dec 2009

Findings suggest severity of atherosclerosis depends on the rate of white blood cell migration

By measuring the total gene activity in organs relevant for coronary artery disease (CAD), scientists at the Swedish medical university Karolinska Institutet have identified a module of genes that is important for the recruitment of white blood cells into the atherosclerotic plaque.

4 Dec 2009

Protein plays a key role in cancer and DNA repair

A protein that plays a key role in copying DNA also plays a vital role in repairing breaks in it, UC Davis scientists have found. The work is helping researchers understand how cancer cells can resist radiation and chemotherapy, as well as how cells become cancerous in the first place.

4 Dec 2009

Body needs fasting periods to stay healthy

A body that is provided with food too often gets caught up in the maelstrom of a lack of exercise, obesity and ultimately diabetes. The trigger is a molecular switch that is controlled by insulin, a new study by scientists from ETH Zurich has revealed.

3 Dec 2009

Discovery of cell fibrous structure may provide clues to diagnose and treat medical disorders

Researchers from the Johns Hopkins Engineering in Oncology Center have shown that in healthy cells, a bundled "cap" of thread-like fibers holds the cell's nucleus, its genetic storehouse, in its proper place.

3 Dec 2009

Study sheds light on gender differences in shopping experiences and behaviors

Daniel Kruger, research faculty at the University of Michigan School of Public Health, says it's perfectly natural that men often can't distinguish a sage sock from a beige sock or that sometimes women can't tell if the shoe department is due north or west from the escalator.

3 Dec 2009