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Neighborhood environments and physical activity among adults

People who live in city neighborhoods close to stores, transit stops, sidewalks, bicycle and low-cost recreational facilities are twice as likely to get enough exercise as people who have no access to these amenities - and this holds true worldwide.

16 Apr 2009

Shedding some light on Parkinson's treatment

A research team lead by Karl Deisseroth in the bioengineering department at Stanford University has developed a technique to systematically characterize disease circuits in the brain.

16 Apr 2009

Nanoparticles combined with scorpion venom slow spread of brain cancer

By combining nanoparticles with a scorpion venom compound already being investigated for treating brain cancer, University of Washington researchers found they could cut the spread of cancerous cells by 98 percent, compared to 45 percent for the scorpion venom alone.

16 Apr 2009

Discovery of new chemical reaction for DNA production in bacteria and viruses

A team of researchers has discovered a new chemical reaction for producing one of the four nucleotides, or building blocks, needed to build DNA.

16 Apr 2009

Missing molecules lead to deafness

Researchers have identified tiny molecules that may lead to big breakthroughs in the treatment of hearing loss and deafness.

16 Apr 2009

Scientists use RNA to reprogram 1 cell type into another

For the past decade, researchers have tried to tweak cells at the gene and nucleus level to reprogram their identity.

16 Apr 2009

New nucleotide could revolutionize epigenetics

Anyone who studied a little genetics in high school has heard of adenine, thymine, guanine and cytosine - the A,T,G and C that make up the DNA code.

16 Apr 2009

Research evaluates impact of tobacco sales law enforcement

Enforcement of laws against the sale of cigarettes to minors does result in a reduction in underage smoking.

16 Apr 2009

Jet lag disturbs sleep by upsetting internal clocks in 2 neural centers

Jet lag is the bane of many travelers, and similar fatigue can plague people who work in rotating shifts.

16 Apr 2009

Research may lead to new ways to fight clot formation

When plaques coating blood vessel walls rupture and expose collagen, platelets spring into action to form a blood clot at the damaged site.

16 Apr 2009

Immune cells in the blood inhibit inflammation after a stroke

In acute ischemic stroke, the blood supply to the brain is restricted. Initially, brain cells die from lack of oxygen.

16 Apr 2009

Fear of moving outdoors may shackle an older person home

Fear may create walking difficulties in a short period of time.

16 Apr 2009

New clues to how stem cells form

An Emory University study shows some of the first direct evidence of a process required for epigenetic reprogramming between generations – a finding that could shed more light on the mechanisms of fertilization, stem-cell formation and cloning.

16 Apr 2009

Cold and brown fat raise the prospect of a new method of treating obesity

Sven Enerbäck, Professor at the Institute of Biomedicine at the Sahlgrenska Academy, University of Gothenburg, Sweden, is one of the scientists who published their results in The New England Journal of Medicine this week.

16 Apr 2009

Feeling bored in marriage leads to reduced satisfaction

Feeling bored in marriage leads to substantially less marital satisfaction even nine years later, according to a study published in the April 14, 2009 issue of Psychological Science.

16 Apr 2009

Autopsy study links prostate cancer to single rogue cell

One cell…one initial set of genetic changes - that's all it takes to begin a series of events that lead to metastatic cancer.

16 Apr 2009

Lots of fruit and veggies not good for smokers!

According to researchers in the Netherlands, although eating lots of fresh fruit and vegetables may reduce the risk of colon cancer for most people this is not the case with smokers.

16 Apr 2009

Autopsy study links prostate cancer to single rogue cell

One cell...one initial set of genetic changes - that's all it takes to begin a series of events that lead to metastatic cancer. Now, Johns Hopkins experts have tracked how the cancer process began in 33 men with prostate cancer who died of the disease. Culling information from autopsies, their study points to a set of genetic defects in a single cell that are different for each person's cancer.

16 Apr 2009

Evidence grows that maternal immune response to fetal brain during pregnancy a key factor in some autism

New studies in pregnant mice using antibodies against fetal brains made by the mothers of autistic children show that immune cells can cross the placenta and trigger neurobehavioral changes similar to autism in the mouse pups.

16 Apr 2009

Protein Mcl-1 identified as new therapeutic target for melanoma

A protein called Mcl-1 plays a critical role in melanoma cell resistance to a form of apoptosis called anoikis, according to research published this week in Molecular Cancer Research.

16 Apr 2009