New perspective needed for role of major Alzheimer’s gene

Scientists’ picture of how a gene strongly linked to Alzheimer’s disease harms the brain may have to be revised, researchers at the School of Medicine have found. Washington University’s David M. Holtzman, MD, says leading researchers recently agreed that targeting this gene is a promising approach for gaining a better understanding of and improving treatments for the disease.

Discovery helps show how breast cancer spreads

School of Medicine researchers have discovered why breast cancer patients with dense breasts are more likely than others to develop aggressive tumors that spread. The finding opens the door to drug treatments that prevent metastasis. Shown are collagen fibers at the boundary of a tumor. Fibers that tend to be perpendicular to the tumor’s surface indicate a poor prognosis.

Unusual comparison nets new sleep loss marker

Paul Shaw, PhD, a researcher at the School of Medicine, has used what he learns in fruit flies to look for markers of sleep loss in humans. But now he has reversed the process in a new paper, taking what he finds in humans back to the flies and identifying a human gene that is more active after sleep deprivation.

New study examines social isolation of young adults with autism spectrum disorder

Young adults with an autism spectrum disorder (ASD) are more likely to never see friends, never get called by friends, never be invited to activities and be socially isolated. That’s the finding of new research released online in the Journal of Autism and Developmental Disorders that studies the social outcomes of young adults with an ASD. The study is part of a pioneering program of research on adolescents and adults with autism led by Paul T. Shattuck, PhD, associate professor at the Brown School at Washington University in St. Louis. Lead author is Gael I. Orsmond, PhD, associate professor at Boston University and an expert on the social development of adults with an ASD.

Scientists assemble genetic playbook for acute leukemia

A consortium of researchers led by the School of Medicine has identified virtually all of the major mutations that drive acute myeloid leukemia (AML), a fast-growing blood cancer in adults that often is difficult to treat. The dark lines in the image pictured show all of the major mutations for AML that occurred in one patient with the disease.
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