Researchers found that COX-2 inhibitors can lead to increased cardiovascular risk through vascular remodeling and blood pressure changes. The study suggests that shutting down prostacyclin, a protective fat produced by COX-2, may accelerate atherosclerosis and hardening of the arteries.
Researchers developed a mouse model that closely mimics human pancreatic cancer at multiple levels, including clinical presentation and histological changes. The model demonstrates distinct similarities to human pancreatic cancer, including metastasis to the liver and lungs.
PENN researchers have developed a novel approach to treat head and neck cancer using the daVinci System, allowing for complete tumor removal while preserving voice and swallowing function. This innovative technique has shown great potential in improving treatment outcomes and quality of life for patients.
Researchers found that increased LXR expression in the liver improves cholesterol and triglyceride levels on high-fat diets, but loses effect with experimental drugs. The study suggests that targeting natural ligands may be more effective in treating metabolic diseases.
A recent study by Penn researchers found that a metabolic enzyme works with the tumor-suppressor protein p53 to control cellular replication. The enzyme, AMP-activated protein kinase (AMPK), acts as a sensor to detect energy levels in cells and prevents them from replicating under certain conditions.
Penn researchers have determined the structure of Erbitux's binding site to cancer cells, providing new insight into how it blocks cell growth-promoting activities. This finding will steer future treatment design for colon-cancer medications and potentially lead to easier delivery methods.
A study on the MSY2 protein found that its absence in mice leads to male and female infertility. The researchers aim to develop new non-hormonal contraceptives using Contrin, a human equivalent of MSY2. This discovery holds promise for targeted fertility treatments and could lead to innovative contraceptive options.
A six-month study found that long-acting naltrexone combined with low-intensity counseling significantly reduced heavy drinking days, from 19 to three per month. The treatment was well-tolerated and effective in reducing alcohol dependence.
Researchers have created a mouse model of multiple system atrophy, showing symptoms similar to human MSA, including protein accumulation in oligodendrocytes and progressive motor skill problems. The study points to potential new treatment targets for brain diseases and opens up possibilities for testing therapies.
Researchers find that moderate light exposure causes complete retinal degeneration within a month, but lower levels cause slower and reversible damage. This study provides new insights into the interaction of genetics and environment in causing eye disease and suggests potential treatments for preventing blindness.
Researchers found that a specific viral protein EBNA3C triggers uncontrolled growth of B cells, initiating cancer. The study provides new insights into how Epstein-Barr virus drives cancer and paves the way for developing targeted therapeutics.
Researchers at the University of Pennsylvania School of Medicine identified a biochemical target that could lead to a new class of antibiotics to fight TB. They found that inhibiting an enzyme in a common biochemical pathway can stop the bacteria from multiplying and eventually kill them.
A University of Pennsylvania study identified 22 ways in which CPOE systems facilitate medication errors, including information errors and human-machine interface flaws. The researchers recommend that institutions focus on the organization of work within the hospital and continuously evaluate and improve their technology.
Researchers have developed a Drosophila fly model for Fragile X syndrome, demonstrating physical and behavioral characteristics similar to those of human patients. Drug treatments blocking mGluR-receptor activity restored memory-dependent courtship behavior in mutant flies and reversed neuronal structural defects.
A Penn study will compare two heart failure management technologies to reduce emergency room visits and improve patient outcomes. The study aims to assess the impact of health information technologies on clinical and financial outcomes for patients with symptomatic heart failure.
Researchers found that Pax3 plays dual roles in adult stem cells, directing them to become melanocytes while preventing complete differentiation. This discovery opens new avenues for understanding stem cell biology and its potential role in cancer development.
A new study from the University of Pennsylvania School of Medicine suggests that PPARã can turn genes both on and off. By targeting this ability to turn off genes without affecting others, researchers may develop drugs called SPPARMs that decrease TZD-related side effects.
A new study by the University of Pennsylvania School of Medicine reveals inconsistencies in candidate-screening practices among US Assisted Reproductive Technology (ART) programs. The study found significant variation in reported likelihood of turning away candidates, with some programs accepting couples with addiction or welfare status.
A meta-analysis of two trials suggests that COX-2 inhibitor Bextra elevates the combined incidence of heart attack and stroke three-fold in patients undergoing coronary artery bypass graft surgery. The researchers also found that another COX-2 inhibitor caused changes in atherosclerotic plaques, potentially increasing the risk of rupture.
Researchers found that 50% of c-MYC-induced mammary cancers persisted in mouse models despite c-MYC gene blockage. Residual cancer cells quickly recovered malignant properties after treatment and eventually progressed to independent growth states.
Scientists have discovered a new gene, Bnip3L, that helps p53 eliminate cancer cells under low-oxygen conditions. Silencing this gene allows tumors to grow more aggressively in hypoxic environments.
Researchers found that Paxceed increased protein travel down spinal axons and improved microtubule density in tau transgenic mice. The drug also reduced motor impairment in the mice.
A recent Penn epidemiological study found a marked difference in heart-attack risk between COX-2 inhibitors rofecoxib and celecoxib, with celecoxib linked to a lower risk. The study compared the cardiovascular effects of these drugs to nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin and ibuprofen.
A team of researchers from the University of Pennsylvania School of Medicine has developed a host of imaging techniques to develop better ways to look noninvasively at the molecular characteristics of tumors. They aim to forecast early response to chemotherapy so that treatment choices can be adjusted.
A new study links resistin to inflammation, insulin resistance, and obesity. Resistin levels increase in human macrophages treated with endotoxin or cytokines, suggesting a role in promoting diabetes through insulin resistance.
Research in female mice reveals estrogen's protective effects against atherosclerosis, highlighting potential risks of COX-2 inhibitors for premenopausal women. The study identifies prostacyclin as a key mediator of estrogen's benefits.
Researchers have developed a new device that can repair severe mitral valve regurgitation through a minimally invasive procedure, reducing symptoms and improving heart function. Preliminary results show favorable outcomes, with patients experiencing significant reductions in hospital stay and complications.
Researchers found that molecular clock genes Bmal1 and Clock play a crucial role in regulating glucose levels, with suppressing these molecules eliminating diurnal variation. A mutated Clock gene also protected mice from diabetes induced by high-fat diets, suggesting altering meal timing may reduce disease risk.
Researchers at the University of Pennsylvania School of Medicine have found a gene-silencing technique that induces cell death in drug-resistant CML cells. The technique targets the Lyn kinase enzyme, which is essential for cancerous blood cells to survive and grow.
A recent study published in JAMA found that a combination of cognitive behavioral therapy (CBT) and antidepressant medication is effective in treating adolescent obsessive-compulsive disorder (OCD). The study, conducted at the University of Pennsylvania School of Medicine, involved 112 children aged 7-17 who were randomly assigned to r...
The Penn project, led by Stephen E Kimmel, aims to develop novel ways of working synergistically to address the scientific, logistical, and intellectual barriers to interdisciplinary research. Recent advances have paved the way for significant gains in understanding how genetic variability can alter drug response.
The study found that rural counties had over 1.5 times the rate of gun suicides compared to urban counties, while urban areas experienced almost twice the gun homicide rate of rural counties. Gun suicides have outpaced gun homicides in the US, accounting for over half of all firearm deaths.
In a breakthrough study, scientists discovered that stimulating the production of utrophin improves muscle function and quality in mice with muscular dystrophy. The research uses a small molecule to turn on utrophin production, bypassing the need for gene therapy. Utrophin levels increased by threefold, leading to improved muscle tissu...
Researchers have developed a fruitfly model that can mimic human diabetes, offering new insights into the regulation of blood sugar levels. The study provides potential benefits for pancreatic cell transplantation and may guide the development of stem cells to produce insulin.
Scientists identified two proteins as the key switches controlling brain cancer cell growth, revealing a potential new target for glioblastoma treatment. The study found that blocking one protein enables the other to inhibit cancerous growth, offering hope for more effective therapies.
Penn researchers successfully inactivated the Foxp4 binding protein, allowing bilateral cardiac primordia to fuse into single tubes. This resulted in four-chambered hearts developing with most aspects of advanced heart development, challenging current understanding of congenital heart disease.
Scientists at the University of Pennsylvania School Medicine have induced axon growth rates of up to ten centimeters per week, defying previous understanding. The stretched axons maintained a normal internal structure and appeared invigorated by extreme growth, suggesting new mechanisms for neuronal physiology.
A study by University of Pennsylvania School of Medicine researchers found that carbon monoxide poisoning causes changes in myelin basic protein, leading to an autoimmune response. The team discovered that immunosuppressant agents and hyperbaric oxygen therapy may be effective treatments for preventing brain damage after CO exposure.
In a breakthrough study, researchers found that dendritic cells, a type of immune cell, can be co-opted by tumors to promote angiogenesis and tumor growth. The study suggests a new approach to fighting solid tumors by targeting the interaction between angiogenesis and the immune response.
Researchers found that scores of patients with a shunt stayed stable, while those without declined by 20% after 12 months. Isoprostane levels were reduced by 50% compared to standard anti-Alzheimer medications.
Researchers discovered a link between aneurysm formation and the activation of an asthma inflammation gene. Blocking this pathway may prevent or slow aneurysm progression, potentially using anti-inflammatory drugs used in cardiovascular disease treatment.
Researchers mapped where three retroviruses integrate into human DNA, finding unique patterns for each. This discovery has implications for better-engineered gene therapies and new HIV drugs.
Researchers pinpoint identity of early-stage T-cells in blood, providing tools for studying T-cell development and improving understanding of immune system. The discovery sheds light on thymus-imported cell types and may help uncover why certain T cells are difficult to reconstitute after bone marrow transplants.
Researchers Wade Berrettini and Irwin Lucki received Distinguished Investigator Awards to study gene identification and behavioral effects of neurotrophins. Monica Gonzalez won a Young Investigator Award to investigate the effect of long-term light deprivation on depression.
A new study reveals a previously unrecognized mechanism for blood vessel patterning, suggesting a potential therapeutic target for cardiovascular diseases. The discovery involves an endothelial receptor called PlexinD1, which may enable manipulation of blood vessel growth and development.
Scientists visualize bacterial ribosome recycling factor (RRF) structure using three-dimensional cryo-electron microscope, shedding light on its role in protein synthesis. RRF is a promising target for designing new antibiotics as it differs between eukaryotes and prokaryotes.
Researchers discovered 68 maternal mutations in zebrafish that may help understand human infertility and birth defects. These mutations affect early embryonic development, including cell divisions and tissue patterning.
A new study published at ASCO finds that MRI is more effective than mammography in detecting the number and size of breast cancer tumors. The research involved over 1000 women across 17 sites, revealing that MRI detected additional cancerous lesions in 56 women, while mammograms only identified 17.
A study by the University of Pennsylvania School of Medicine found that most antidepressants, except citalopram, are ineffective on mice lacking norepinephrine. The researchers tested eight commonly prescribed antidepressant drugs and discovered a critical link between norepinephrine and desired behavioral effects.
A landmark study by Penn Medicine reveals significant improvements in quality of life and survival rates for heart failure patients treated with cardiac resynchronization therapy (CRT) and optimized pharmacologic therapy. The study shows a 36% reduction in all-cause mortality for patients implanted with CRT defibrillators.