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Growing New Teeth to Replace Decayed Ones & Other News of Note

Posted Dec 13 2010 9:01am

Gel That Can Help Decayed Teeth Grow Back Could End Fillings (Mail Online)

The gel, which is being developed by scientists in France, works by prompting cells in teeth to start multiplying. They then form healthy new tooth tissue that gradually replaces what has been lost to decay.

Researchers say in lab studies it took just four weeks to restore teeth back to their original healthy state. The gel contains melanocyte-stimulating hormone, or MSH… More

New Mechanism Links Cellular Stress & Brain Damage (ScienceDaily)

A new study uncovers a mechanism linking a specific type of cellular stress with brain damage similar to that associated with neurodegenerative disease. The research, published by Cell Press in the Dec. 9 issue of the journal Neuron, is the first to highlight the significance of the reduction of a specific calcium signal that is directly tied to cell fate.

Body cells are constantly exposed to various environmental stresses. Although cells possess some natural defenses, excessive stress can lead to a type of cell death called apoptosis. “It is thought that excessive stress impacts brain function by inducing neuronal apoptosis and may play a role in neurodegenerative diseases such as Alzheimer’s disease and Huntington’s disease (HD),” explains senior study author, Dr. Katsuhiko Mikoshiba, from the Laboratory for Developmental Neurobiology at RIKEN Brain Science Institute… More

Study: Could Cell-Phone Use in Pregnancy Affect Kids’ Behavior? (Time)

Children exposed to cell phones before and after birth were 50% more likely to have emotional or behavior problems by the age of 7, compared with kids who were not exposed to the phones, according to a new study of 28,745 children. The same authors of the new study reached similar conclusions in a previous study conducted in 2008… More

Drugs Can Pass Through Human Body Almost Intact: New Concerns for Antibiotic Resistance, Pollution Identified (ScienceDaily)

When an antibiotic is consumed, researchers have learned that up to 90 percent passes through a body without metabolizing. This means the drugs can leave the body almost intact through normal bodily functions.

In the case of agricultural areas, excreted antibiotics can then enter stream and river environments through a variety of ways, including discharges from animal feeding operations, fish hatcheries, and nonpoint sources such as the flow from fields where manure or biosolids have been applied. Water filtered through wastewater treatment plants may also contain used antibiotics.

Consequently, these discharges become “potential sources of antibiotic resistance genes,” says Amy Pruden, a National Science Foundation CAREER Award recipient, and an assistant professor of civil and environmental engineering at Virginia Tech… More

Living in a Walkable Neighborhood Enhances an Individual’s Quality of Life (Medical News Today)

People who live in walkable communities are more civically involved and have greater levels of trust than those who live in less walkable neighborhoods. And this increase in so-called ‘social capital’ is associated with higher quality of life, according to Shannon Rogers and her team from the University of New Hampshire in the US. Their research, looking at the social benefits of walkability in communities, is published online in Springer’s journal Applied Research in Quality of LifeMore

 


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