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WashU Medicine


Stable home lives improve prospects for preemies

Research at Washington University School of Medicine found that stable home lives and nurturing mothers can significantly improve the psychiatric health of preterm children. The study revealed four distinct groups of preterm children, with those from healthier homes showing normal psychiatric outcomes.

SourceWashU Medicine·JournalJournal of Child Psychology and Psychiatry·DateAug 26, 2019

Genes linked to Alzheimer's risk, resilience ID'd

A team of scientists has identified two genes, MS4A4A and TREM2, that influence the risk for both late-onset and early-onset Alzheimer's disease. Variants in these genes affect the brain's immune cells, which may hold a new strategy to delay or protect against the disease.

SourceWashU Medicine·JournalScience Translational Medicine·DateAug 14, 2019

Genes linked to death from sepsis ID'd in mice

Scientists at WashU Medicine have found a set of genes that help cells survive exposure to cytokines, which can trigger a deadly cytokine storm. Targeting these genes may lead to new treatments for sepsis, a life-threatening condition that claims 15% of patients despite prompt medical care.

To fight TB infection, early protection is crucial

Researchers identified a master cell that coordinates the body's immune defenses in the first days after TB infection. Boosting this cell's activity could help prevent TB and reduce new infections. The findings suggest a new avenue for TB control and may aid development of more effective vaccines.

SourceWashU Medicine·JournalNature·DateJun 5, 2019

Drug-resistant tuberculosis reversed in lab

Researchers found a compound, C10, that prevented TB bacteria from forming biofilms, making them easier to kill with antibiotics. The compound reversed drug resistance in lab-grown bacteria, potentially shortening treatment regimens for millions suffering from the deadly infection.

SourceWashU Medicine·JournalProceedings of the National Academy of Sciences·DateJun 3, 2019

Immune cells determine how fast certain tumors grow

Researchers found that immune cells recruited by tumor cells drive faster growth, suggesting targeting immune system cells could slow brain tumor growth in people with neurofibromatosis type 1 (NF1). The study suggests reprogramming T cells to shut down tumors, a promising new strategy for treating NF1.

SourceWashU Medicine·JournalNeuro-Oncology·DateJun 3, 2019

Antibiotics may treat endometriosis

Researchers discover that metronidazole reduces lesions caused by endometriosis in mice, suggesting a potential treatment for the painful condition. The study also reveals that gut microbiota may play a role in driving or preventing endometriosis progression.

SourceWashU Medicine·JournalHuman Reproduction·DateApr 30, 2019

Probiotic bacteria evolve inside mice's GI tracts

A new study found that probiotic bacteria can evolve and change inside the mouse's gut, making them less effective and sometimes harmful. The researchers discovered that the bacteria's DNA changes and they develop new capabilities after living in the mice's intestines for a few weeks.

SourceWashU Medicine·JournalCell Host & Microbe·DateMar 26, 2019

Blunting pain's emotional component

Researchers at WashU Medicine developed a pain killer that blocks kappa opioid receptors to restore motivation in rodents. The compound dampens the negative emotions associated with pain without causing euphoria, offering a potential approach to less addictive pain treatment.

SourceWashU Medicine·JournalNeuron·DateMar 13, 2019

Unnecessary testing for UTIs cut by nearly half

A new study at WashU Medicine finds that making a simple electronic system change can reduce bacterial culture tests ordered without compromising patient care. The change encourages doctors to first look for signs of UTIs before testing urine for bacteria, resulting in a nearly half reduction in unnecessary tests.

SourceWashU Medicine·JournalInfection Control and Hospital Epidemiology·DateFeb 21, 2019

For adult scoliosis, surgery, other treatments are viable options

A new study suggests that surgery is a viable option for adults with scoliosis, but nonoperative treatments can also be effective. The extent of disability was found to be the most important factor in deciding whether to operate, with patients who had adequate quality-of-life benefiting from nonoperative treatment.

SourceWashU Medicine·JournalJournal of Bone and Joint Surgery·DateFeb 20, 2019

Women's brains appear three years younger than men's

A new study finds that women's brains are metabolically three years younger than men's of the same age, which may contribute to their greater mental sharpness in later years. The researchers used PET scans and machine-learning algorithms to measure brain metabolism and calculate each person's brain age.

Sleep deprivation accelerates Alzheimer's brain damage

A recent study published in Science has found that sleep deprivation increases levels of the key Alzheimer's protein tau, leading to accelerated brain damage and dementia. In mice and people, researchers discovered that disrupted sleep causes tau tangles to spread through the brain, a hallmark of Alzheimer's disease.

SourceWashU Medicine·JournalScience·DateJan 24, 2019

Blood test detects Alzheimer's damage before symptoms

A new blood test reliably detects signs of brain damage in people with Alzheimer's disease, even before symptoms of confusion and memory loss arise. The test may also identify neurodegeneration in other brain diseases, injuries, and conditions such as multiple sclerosis and traumatic brain injury.

SourceWashU Medicine·JournalNature Medicine·DateJan 21, 2019

Gene therapy blocks peripheral nerve damage in mice

Scientists have developed a gene therapy that blocks axon destruction in mice, suggesting a therapeutic strategy to prevent the loss of peripheral nerves in multiple conditions. This breakthrough could help prevent peripheral neuropathy, a disease affecting 20 million people in the US, and other neurodegenerative disorders.

SourceWashU Medicine·JournalJournal of Experimental Medicine·DateJan 17, 2019

New hope for stem cell approach to treating diabetes

Researchers at Washington University School of Medicine have developed a new method for producing insulin-producing beta cells from human stem cells, which are more responsive to fluctuating glucose levels. The resulting cells were transplanted into diabetic mice and effectively controlled blood sugar for several months.

SourceWashU Medicine·JournalStem Cell Reports·DateJan 17, 2019

Mice sleeping fitfully provide clues to insomnia

Researchers studied genetically modified mice with neurofibromatosis type 1 (NF1), a condition associated with sleep problems. The mice exhibited fragmented and irregular sleep patterns, similar to people with NF1. This study could help identify molecular mechanisms underlying sleep disturbances in humans.

SourceWashU Medicine·JournalJournal of Sleep Research·DateJan 9, 2019

New strategy may curtail spread of antibiotic resistance

Researchers identify key step in transmission of antibiotic resistance and develop novel strategy to interrupt its spread. By understanding how plasmids interact with bacterial defenses, scientists can design therapies that prevent drug resistance from spreading, safeguarding future treatment options.

SourceWashU Medicine·JournalProceedings of the National Academy of Sciences·DateJan 9, 2019

Racial differences in Alzheimer's disease unveiled

Researchers identified racial disparities in Alzheimer's disease diagnosis and progression among African-American participants, who had lower levels of brain protein tau. This may lead to under-recognition of the disease in African-Americans, as they often have lower tau levels than Caucasians, according to a new study.

SourceWashU Medicine·JournalJAMA Neurology·DateJan 7, 2019

Scientists identify new fuel-delivery route for cells

Researchers at WashU Medicine have identified a protein responsible for transporting nicotinamide mononucleotide (NMN) into cells, where it can be used to produce energy. This finding has implications for understanding the process of aging and developing therapies to boost cellular energy levels.

SourceWashU Medicine·JournalNature Metabolism·DateJan 7, 2019

Sex differences identified in deadly brain tumors

A recent study has found that standard treatment for glioblastoma is more effective in women than men, with tumor growth velocity showing a steady decline after treatment. The researchers identified distinct molecular signatures of the disease in men and women, which could lead to sex-specific treatment strategies.

SourceWashU Medicine·JournalScience Translational Medicine·DateJan 2, 2019