School of Medicine

Patients with severe heart failure can be bridged to eventual transplant by a new, smaller and lighter implantable heart pump, according to a just-completed study of the device. Results of this third-generation heart assist device were reported at the 58th annual meeting of the American College of Cardiology on March 30.

Scientists who first established a link between obesity and the trillions of friendly microbes that live in the intestine now are investigating whether the organisms can contribute to the converse: severe malnutrition. Researchers at the School of Medicine, led by microbiologist Jeffrey Gordon, M.D., will study whether severely malnourished infants living in Malawi and Bangladesh have a different mix of intestinal microbes than healthy infants in the same areas, and whether those microbes might account for their illness. This three-year, $5.5 million project is funded by the Bill & Melinda Gates Foundation.

DehnerLouis P. “Pepper” Dehner, a faculty member at the School of Medicine, received the Distinguished Pathologist Award of the United States and Canadian Academy of Pathology (USCAP) at the academy’s 2009 annual meeting. Held in Boston March 7-13, the meeting is the largest annual gathering of pathologists, and the Distinguished Pathologist Award is its highest honor.

Funding from the Missouri Life Sciences Research Fund, part of the 1998 state tobacco settlement, will establish the St. Louis Institute of Nanomedicine Working Group, a collaborative regional effort to apply advances in nanotechnology to the treatment of human diseases.

Detectives on television shows often spray crime scenes with a compound called luminol to make blood glow. Researchers at the School of Medicine have applied the same compound to much smaller crime scenes: sites where the immune system attacks the body’s own tissues.

All animals, including humans, have an internal 24-hour clock or circadian rhythm that creates a daily oscillation of body temperature, brain activity, hormone production and metabolism. Studying mice, researchers at the School of Medicine and Northwestern University found how the biological circadian clock mechanism communicates with processes that govern aging and metabolism.

Nationally recognized StoryCorps will visit the Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine April 17-21 as part of a collaborative project to better understand how parents with cancer discuss the diagnosis with their children. This visit is the first time that StoryCorps, the largest oral history project of its kind, has partnered to collect the stories of cancer survivors on a single topic.

The prostate cancer screening tests that have become an annual ritual for many men don’t appear to reduce deaths from the disease, at least among those with a limited life-expectancy, according to early results of a major U.S. study involving 75,000 men.

Exposure to a chemotherapeutic drug makes the branches of a normal nerve cell degenerate (left).Scientists have identified the first gene that pulls the plug on ailing nerve cell branches from within the nerve cell, possibly helping to trigger the painful condition known as neuropathy. The condition is a side effect of some forms of chemotherapy and can also afflict patients with cancer, diabetes, kidney failure, viral infections, neurodegenerative disorders and other ailments.

An enzyme researchers have studied for years because of its potential connections to cancer, diabetes, heart disease, hypertension and stroke appears to have yet another major role to play: helping create and maintain the brain. When scientists at the School of Medicine selectively disabled the enzyme AMP-activated protein kinase (AMPK) in mouse embryos, overall brain size was reduced by 50 percent, the cerebrum and cerebellum were shrunken, and the mice died within three weeks of birth.