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Health Sciences
Sleepy Fruitflies Get Mellow: Sleep Deprivation Reduces Aggression, Mating Behavior in Flies, Penn Study Finds
Whether you're a human, a mouse, or even a fruitfly, losing sleep is a bad thing, leading to physiological effects and behavioral changes. One example that has been studied for many years is a link between sleep loss and aggression. But it can be difficult to distinguish sleep loss effects from stress responses, especially in rodent or human models.
Penn Scientists Find That Flow Means "Go" for Proper Lymph System Development
The lymphatic system provides a slow flow of fluid from our organs and tissues into the bloodstream. It returns fluid and proteins that leak from blood vessels, provides passage for immune and inflammatory cells from the tissues to the blood, and hosts key niches for immune cells. How this system develops hasn’t been well understood, but now researchers from the Perelman School of Medicine at the University of Pennsylvania have found from experiments in mice that the early flow of lymph fluid is a critical factor in the development of mature lymphatic vessels.
A Bash Between Friends
It wasn’t long ago that Maria Soltero-Rivera learned an important lesson: “Different is good.” “We’ve been working so hard doing this, and this little girl puts into a few simple words exactly what we’ve been trying to communicate to everyone,” Soltero-Rivera says. “You just learn so much from these kids.”
Penn Study Finds Link between Physician Training and Brand Name Prescribing
Physicians in training are twice as likely to order a costly brand-name statin (used to lower blood cholesterol levels) when supervised by senior physicians who prefer those medications in their own practice, according to a new study led by researchers at the
Researchers at Penn Develop Scar-like Culture Systems to Understand and Treat Fibrosis
A scar might be a reminder of an accident or surgery, but the fibrous tissue that makes up a scar also forms after a heart attack and arises in solid tumors as well as in chronic diseases such as liver cirrhosis and muscular dystrophy. Implanted medical devices and materials are similarly surrounded by fibrous capsules that impede their function.
Penn Vet Team Shows a Protein Modification Determines Enzyme’s Fate
The human genome encodes roughly 20,000 genes, only a few thousand more than fruit flies. The complexity of the human body, therefore, comes from far more than just the sequence of nucleotides that comprise our DNA, it arises from modifications that occur at the level of gene, RNA and protein.
Vision-Restoring Gene Therapy Also Strengthens Visual Processing Pathways in Brain, According to Penn Study
Since 2007, clinical trials using gene therapy have resulted in often-dramatic sight restoration for dozens of children and adults who were otherwise doomed to blindness. Now, researchers from the Perelman School of Medicine at the University of Pennsylvania and The Children’s Hospital of Philadelphia (CHOP), have found evidence that this sight restoration leads to strengthening of visual pathways in the brain, published this week in Science Translational Medicine.
Hydraulic Fracturing Linked to Increases in Hospitalization Rates in the Marcellus Shale Region, According to Penn Study
Hospitalizations for heart conditions, neurological illness, and other conditions were higher among people who live near unconventional gas and oil drilling (hydraulic fracturing), according to new research from the University of Pennsylvania and Columbia University published this week in PLOS ONE.
Elective Surgery Is Associated with Lower Risk of Death than Drugs for Ulcerative Colitis Treatment, Penn Study Finds
Patients over 50 with ulcerative colitis (UC), a chronic disease of the colon, who undergo surgery to treat their condition live longer than those who are treated with medications, according to a new study from the Perelman School of Medicine at the University of Pennsylvania.
Fruitfly Sperm Cells Reveal Intricate Coordination in Stem Cell Replication, Penn Study Finds
Stem cells are key for the continual renewal of tissues in our bodies. As such, manipulating stem cells also holds much promise for biomedicine if their regenerative capacity can be harnessed. However, understanding how stem cells govern normal tissue renewal is a field still in its infancy.
In the News
Bird flu suspected in deaths of 200 snow geese in Pennsylvania’s Lehigh Valley
Stephen Cole of the School of Veterinary Medicine says that indoor cats are contracting bird flu through raw pet foods of poultry origin or raw milk products.
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The surgeon general calls for new warning labels on alcohol—here’s the truth about how it impacts your health
Henry Kranzler of the Perelman School of Medicine says that alcohol’s effects on the brain are observed more readily because it’s the organ of behavior.
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Tuberculosis rates plunge when families living in poverty get a monthly cash payout
Aaron Richterman of the Perelman School of Medicine says that there are large and underappreciated benefits of cash-transfer programs, such as potentially ending a tuberculosis epidemic.
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Cancer breakthrough as ‘speckles’ may reveal best treatment
A paper co-authored by PIK Professor Shelley Berger finds that patterns of “speckles” in the heart of tumor cells could help predict how patients with a common form of kidney cancer will respond to treatment options.
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Scientists are racing to develop a new bird flu vaccine
Drew Weissman and Scott Hensley of the Perelman School of Medicine are testing a vaccine to prevent a strain of H5N1 bird flu in chickens and cattle.
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