Medicine & Health

Photo by Noah Devereau, Post-DispatchSleeping fruit flies pictured through a microscopeMuch like humans, fruit flies sleep at night and take midday naps. They also respond to stimulants like we do, and their young sleep a lot more than adults. A new study, using fruit flies as test subjects, shows that sleep is important for learning and memory and that the need for sleep is tied to memory genes.

Below is a link to the Washington University news release about the U.S. News & World Report undergraduate rankings for 2004-05: http://news-info.wustl.edu/news/page/normal/3627.html To view a full listing of U.S. News magazine, book and Web-only rankings for 2004-05, please visit the U.S. News & World Report site: http://www.usnews.com/usnews/edu/college/rankings/rankindex_brief.php

Below is a link to the Washington University news release about the U.S. News & World Report undergraduate rankings for 2004-05: http://news-info.wustl.edu/news/page/normal/3627.html To view a full listing of U.S. News magazine, book and Web-only rankings for 2004-05, please visit the U.S. News & World Report site: http://www.usnews.com/usnews/edu/college/rankings/rankindex_brief.php

Listed below are this month’s featured news stories. • Better memory performance (week of Sept. 6) • Predicting the spread of cancer (week of Sept. 13) • Curing diabetes in rats (week of Sept. 20) • Treating diabetes (week of Sept. 27)

Temple Grandin transforms our views of how animals and autistic people perceive the world and how they connect. Her Assembly Series talk “The Boundaries of Humanity” is at 11 a.m. on Oct. 4 in Graham Chapel.

KellyDaniel Kelly has been named director of the Division of Cardiovascular Diseases in the Department of Medicine at the School of Medicine. Kelly is the Alumni Endowed Professor of Cardiovascular Diseases and professor of medicine, of pediatrics and of molecular biology and pharmacology and a cardiologist at Barnes-Jewish Hospital.

Gene expression mapScientists at the School of Medicine have developed a method to predict whether melanoma of the eye will spread to the liver, where it quickly turns deadly. They also believe the molecular screening test may one day help determine the prognosis of patients with some types of skin melanoma. The researchers found that a particular molecular signature — a pattern of activation of a group of genes in the tumor cells — accurately predicts risk for metastasis.

An approach proven to cure a rat model of type 1 or juvenile-onset diabetes also works in a rat model of type 2 or adult-onset diabetes, according to a new report from researchers at the School of Medicine.

A long-term study of the elderly has revealed that their average rate of weight loss doubles in the year before symptoms of Alzheimer’s-type dementia first become detectable. The finding may be useful to researchers seeking ways to detect and treat Alzheimer’s before it causes irreversible brain damage.

Olga Pontes is Going FISHin’.Biologists at Washington University in St. Louis have made an important breakthrough in understanding a pathway plant cells take to silence unwanted or extra genes using short bits of RNA. Basically, they have made it possible to see where, and how, the events in the pathway unfold within the cell, and seeing is believing, as the old saying goes. Craig Pikaard, Ph.D., Washington University professor of biology in Arts & Sciences and his collaborators have described the roles that eight proteins in Arabidopsis plants play in a pathway that brings about DNA methylation, an epigenetic function that involves a chemical modification of cytosine, one of the four chemical subunits of DNA. More…