Body

Blocking the migration of cancer cells to destroy them

Lymphoma is a cancer that affects lymphocytes, a type of white blood cell. The disease originates in a lymphoid organ (lymph node, spleen, or bone marrow) before spreading through the blood to infiltrate not only other lymphoid organs but also other tissues. Every year, nearly 2,000 people in Switzerland are diagnosed with lymphoma, a disease that can be very aggressive, resisting standard treatments with chemotherapeutic drugs. Today, researchers at the University of Geneva (UNIGE) and the Geneva University Hospitals (HUG), Switerland, give a new hope to patients.

Duke team identifies new 'mega-complex' involved in cell signaling

DURHAM, N.C. -- Duke Health-led researchers have discovered new information about the signaling mechanism of cells that could one day help guide development of more specific drug therapies.

For years, well-established science detailed the intricacies of how cells change function after receiving chemical signals from hormones, neurotransmitters or even drugs.

A sweeter way of teaching health and safety

A new study shows using chocolate as a test material in experimental, hands-on practical work increases student engagement. It provides a much better way than previous methods for helping students understand the importance of health and safety in their ongoing studies and future careers.

Don't freestyle 'swimmer's shoulder' injuries

ROSEMONT, Ill. (August 4, 2016)--Elite and competitive swimmers log between 60,000 and 80,000 meters weekly--swimming the length of an Olympic-sized pool 1,200 times--which places significant stress on their shoulder joints. "The upper body provides 90 percent of the propulsive force to move through the water. Due to the amount of force generated and the range of motion required to swim efficiently, the shoulder needs to have perfect mechanics to avoid injury," says Dr.

Study analyses how epigenetics regulate vital functions from bacteria to humans

(Boston) -- After the emergence of single-celled organisms some billions of years ago, nature started experimenting with how to diversify gene function without changing the sequence of the DNA, such that the blue print remains conserved, but allows gene products to have different functions. As multicellular organisms evolved, this process of maintenance and function were provided by mechanisms which are called "epigenetics". Epigenetics allow genes to function differently by adding chemical 'tags' to DNA or to proteins that surround the DNA.

Higher BMI not associated with bigger heart attack, death risk in heavier twin

A study of monozygotic Swedish twins suggests that while a higher BMI was not associated with increased risk of heart attack or death for the heavier twin, it was associated with increased risk for the onset of diabetes for that twin, according to an article published online by JAMA Internal Medicine.

Monozygotic twins are genetically identical so they provide a unique tool for evaluating risks associated with obesity independent of genetic factors.

Toe-tapping to better health: Fidgeting helps prevent arterial dysfunction from sitting

COLUMBIA, Mo. (Aug. 4, 2016) -- Previous research has shown that sitting for an extended period of time at a computer or during a long airline flight reduces blood flow to the legs, which may contribute to the development of cardiovascular disease. Now, researchers from the University of Missouri have found that fidgeting while sitting can protect the arteries in legs and potentially help prevent arterial disease.

Penn researchers improve computer modeling for designing drug-delivery nanocarriers

A team of University of Pennsylvania researchers has developed a computer model that will aid in the design of nanocarriers, microscopic structures used to guide drugs to their targets in the body. The model better accounts for how the surfaces of different types of cells undulate due to thermal fluctuations, informing features of the nanocarriers that will help them stick to cells long enough to deliver their payloads.

To beat hypertension, take the 'clinic' to the people

Eliminating racial disparities in the outcomes of programs to control blood pressure can be accomplished with a few one-on-one coaching sessions delivered by health professionals --but not if the program requires people to get to a clinic, according to results of a new Johns Hopkins Medicine study.

Hysterectomy with ovary conservation doubles odds of hot flushes, night sweats

A University of Queensland School of Public Health study has found these hot flushes and sweats -- known as vasomotor symptoms -- can persist for more than a decade, seriously affecting quality of life.

PhD candidate Louise Wilson examined 17 years of data from more than 6000 women in the Australian Longitudinal Study on Women's Health (ALSWH).

"Approximately 20 per cent of the women had a hysterectomy -- with ovary conservation -- before the age of 50," Ms Wilson said.

Asian giant honeybees may move in synchrony to ventilate nests

Asian giant honeybees may use synchronized movements to ventilate and cool their nests, according to a study published August 3, 2016 in the open-access journal PLOS ONE by Gerald Kastberger from the University of Graz, Austria, and colleagues.

Three new species identified amongst the Tegu lizard family

The golden tegu lizard, previously thought to be a single species, may actually comprise four distinct clades, including three new cryptic species, according to a study published August 3, 2016 in the open-access journal PLOS ONE by John Murphy from the Field Museum of Natural History, USA and colleagues.

Insect tibias are best suited for jumping and other emergency behaviors

Insect tibias are best suited to withstand the high stress of emergency behaviors rather than the fatigue stress of normal behaviors, according a study published August 3, 2016 in the open-access journal PLOS ONE by Eoin Parle from Trinity College, Ireland, and colleagues.

Making nail polish while powering fuel cells

Hydrogen is widely regarded as a promising and clean alternative energy source. The traditional source of hydrogen (H2) for fuel cell use is water, which is split into H2 and oxygen (O2). But O2 is a low-value product. So, this week in ACS Central Science, researchers report a new approach and a new catalyst that can produce not just hydrogen but also valuable chemicals, including the most common ingredient in nail polish.

Surgical stitch linked to stillbirth and preterm birth

In a study of almost 700 pregnant women who received a cervical stitch designed to prevent preterm labor, the use of one type of suture over another was associated with three times higher risk of stillbirth and almost twice the risk of preterm birth. The findings suggest that the suture may disrupt the vaginal microbiome and spur inflammation, one of the major risk factors for preterm birth.