Researchers at Duke University Medical Center have made a breakthrough in understanding the role of phosphoinositide 3-kinase (PI(3)K) in heart failure. They found that preventing PI(3)K's activation could block the loss of heart receptors, potentially improving heart function in patients with heart failure.
A new brain scan study found that smokers who experience intense cravings exhibit heightened sensitivity to smoking-related images. The researchers suggest that these findings may lead to the development of diagnostic tests and personalized quitting methods for smokers.
The Duke team successfully engineered new blood vessels from vascular cells of four elderly men with heart disease, extending their lifespan indefinitely. The treated smooth muscle cells were then impregnated into a biodegradable polymer tube and grew for up to seven weeks, forming functional-like arteries.
A study by researchers at Duke University Medical Center found that improved disease knowledge alone does not translate into improved blood sugar control, cholesterol levels, weight management, or mortality rates among diabetics. Despite this, education is still an important aspect of diabetes care.
Researchers at Duke University Medical Center have discovered a natural compound, nitrosoglutathione (GSNO), that helps keep airways open and may offer a new approach to treating asthma. Mice with elevated levels of GSNO were less susceptible to asthma, while those deficient in GSNO developed the disease.
A recent study found that patients taking SSRIs before heart surgery have higher mortality rates four years later. The researchers suggest that depression itself is the primary cause of increased mortality, rather than medication use. The study recommends closer monitoring and treatment for depressed patients undergoing heart surgery.
Researchers found a unique brain cluster called Cluster N that is active at night but dormant during the day, indicating a specialized night-vision system. This adaptation enables birds to navigate and fly during their nocturnal migrations.
Researchers at Duke University Medical Center have developed a life-saving treatment for newborns with Krabbe Disease using umbilical cord blood stem cells. The study shows that 11 asymptomatic newborns and 14 symptomatic infants were successfully treated, with all asymptomatic babies surviving and 43% of symptomatic babies surviving.
Researchers discovered that monkeys can control a robot arm using only their brain signals, adapting neural structures and expanding capability. The study reveals the remarkable flexibility of the primate brain in incorporating artificial tools into its function.
Researchers found that morphine increased mortality rates by 6.8% compared to nitroglycerin, even after adjusting for clinical risk. The study calls for a randomized clinical trial to confirm the findings and advises cardiologists to prioritize nitroglycerin treatment.
Researchers identify TRPC6 gene as novel mechanism for FSGS, a leading cause of kidney damage. The discovery raises hope for new treatments targeting ion channels, which are amenable to drug therapy.
A study at Duke University Medical Center found that genetic variations in platelet surface receptors and coagulation proteins are associated with increased post-operative bleeding. This discovery may lead to genetic screening as a tool for pre-operative evaluation of heart surgery patients.
Researchers at Duke University Medical Center discovered that HIV vaccines may have failed due to the induction of self-reactive antibodies, which can destroy the body's own tissues. The team proposes a new approach to develop HIV vaccines by redirecting the immune response from innate B cells to adaptive B cells.
Researchers at Duke University Medical Center have found that members of the same sex can mate and produce offspring in the infectious fungus Cryptococcus neoformans. This novel type of sexual cycle allows for genetic exchange between individuals, potentially providing an advantage for the fungus.
A study analyzing ASSENT-2 clinical trial data found no significant association between small dosing errors and increased mortality rates among heart attack patients. However, patients with certain factors such as advanced age, female gender, and lower blood pressure were more likely to experience adverse events.
A randomized trial found that exercise and stress management training improved physiological markers of cardiovascular health, including blood flow to the heart and vascular endothelial function. These non-pharmaceutical approaches also showed promise in reducing symptoms of depression and anxiety, and improving baroreflex sensitivity.
Research reveals kidneys and other systemic tissues have distinct roles in controlling blood pressure, challenging the dominant view that kidneys play a central role. The findings suggest that maximal efficacy of hypertension drugs requires complete blockade of receptors in both kidney and outside of kidney.
Researchers found variants of genes involved in anti-epileptic drug metabolism to be associated with higher doses. This discovery could lead to personalized treatment plans and improved patient outcomes.
Researchers at Duke University Medical Center have successfully reversed glycogen buildup in heart and skeletal muscle of genetically altered mice using a muscle-targeted gene therapy. This approach shows promise as a potential treatment strategy for Pompe disease patients who fail to respond to enzyme replacement therapy.
Researchers found unique patterns of gene expression on women's X chromosomes, with 15% of genes escaping inactivation. This variation can affect sex-specific traits and health outcomes, highlighting key differences between male and female genomes.
A new study found that light therapy, combined with anti-fungal treatments, can effectively combat various fungal infections, particularly those affecting the skin or nails. The research also sheds light on early fungal evolution and the role of light in fungal development.
A common gene variant in the complement factor H (CFH) gene is associated with a 43% increase in risk of age-related macular degeneration. This finding sheds light on the disease's underlying mechanisms and could lead to new therapeutic approaches. Understanding the role of CFH may ultimately enable early detection and prevention of AMD.
Researchers at Duke University have identified specific DNA regions in yeast that are prone to breakage, mimicking cancer cells' chromosomal instability. By slowing down DNA replication, they found that certain retrotransposon sites become more susceptible to kink formation and rearrangements.
A study by Duke University researchers found that moderate inhalation anesthetic exposure during pregnancy may not be deleterious to the fetus. The exposure improved cerebral oxygenation in the developing fetus, suggesting a potential benefit for pregnant women undergoing general anesthesia.
A study led by Dr. Wei Jiang found that even mildly depressed heart failure patients are at higher risk of death, with a 44% greater risk when BDI scores exceed 10. The researchers believe this highlights the importance of monitoring patients' psycho-social status in their care.
A new study using CRT-D devices found a strong correlation between changes in heart rate variability and mortality one year later. Patients with limited heart rate variability are at higher risk of suffering a heart attack, making the device's data an important tool for identifying high-risk patients.
Researchers found a significant association between depression and ventricular tachycardia, a precursor to sudden cardiac death, in hospitalized heart attack patients. The risk of ventricular tachycardia increased with increased levels of depression.
Researchers identified specific genetic variants that increase the risk of kidney damage after heart surgery. Patients with these polymorphisms have a higher likelihood of renal dysfunction due to amplified inflammatory responses and vascular constriction.
Researchers found that mice lacking type VI collagen developed osteoarthritis at a rate five times greater than those with a functioning gene. The study provides new insights into the role of type VI collagen in cartilage health and its impact on osteoarthritis development.
A new study recommends expanding routine HIV screening to settings with low prevalence rates due to its cost-effectiveness. The study found that even at low prevalence levels, regular testing can provide important health benefits. Additionally, the researchers suggest that screenings should be expanded to reduce the transmission of the...
Researchers at Duke University Medical Center discovered that an inability of red blood cells to relax blood vessels through the release of nitric oxide is a major factor behind sickle cell disease symptoms. Restoring nitric oxide to blood cells may serve as a useful method for treating the disease.
Researchers at Duke University Medical Center have identified a gene defect that causes Charcot-Marie-Tooth disease, a prevalent and inherited nerve disorder. The discovery provides new insights into the nervous system and may lead to the development of targeted therapies for this debilitating disease.
A monkey study provides a controlled laboratory setting to explore how monkeys make social judgments, including dominance rankings and reproductive success. The findings suggest that the brain processes social information in a way similar to humans, with implications for understanding autism.
Researchers at Duke University Medical Center discovered regulatory genes in niche cells instruct stem cells to determine their future path, involving proteins acting as 'on-off' switches for stem cell division. This understanding is crucial for developing stem cell therapies and addressing disorders like infertility and cancer.
Researchers found that beta-arrestin2 activates the hedgehog signaling pathway, which can lead to cancerous tumors. The study suggests potential new drugs to block tumor growth by disrupting beta-arrestin2's function.
A genetic defect has been found to confer risk of major depression and resistance to SSRI drug therapy. The study identified a novel molecular mechanism underlying dysfunction in serotonin neurotransmission, which may explain the development of depression and other psychiatric disorders.
The study, led by Dr. Miguel Nicolelis, demonstrates the ability to distinguish patterns of brain activity in awake animals, including fleeting changes during sleep stages. The new analytical technique enables unprecedented insights into the healthy brain and neurological diseases like epilepsy and Alzheimer's.
A study of 26 male college basketball players found that MRI screenings can help identify at-risk players and prevent injuries. Custom-fit shoe supports and orthotics can provide relief and prevent further debilitating injuries.
Researchers discovered two proteins that chaperone odorant receptors to the surface of olfactory nerves in mice, enabling them to match nearly 1,000 different mouse odorant receptors with specific chemicals. This breakthrough opens up new possibilities for understanding the mechanisms underlying our sense of smell.
A study published in 2004 found that obese individuals experience lower sexual quality of life, with women reporting more difficulties than men. The research suggests that losing weight and increasing physical activity can help restore sexual function for those with obesity-related problems.
A recent analysis of over 57,000 high-risk heart attack patients found that those who received morphine had a 6.8% death rate, compared to 3.8% for those receiving nitroglycerin. Morphine use was linked to an increased risk of mortality and another heart attack in the hospital.
Researchers found that the fungal genome's sex-determining region shares similarities with the human Y chromosome, including cluster formation of functionally related genes. This discovery may provide insight into infertility in fungi and humans, as well as disease mechanisms in C. neoformans.
A study analyzing hospital adherence to treatment guidelines and mortality rates found that hospitals following guidelines had a 37% decline in death rates, while those with worsened care saw a 3.1% increase. This suggests that quality improvement initiatives can significantly save lives.
Researchers found drug-eluting stents were used quickly, with a high rate of 'off-label' usage, particularly among older patients, African-Americans and those without insurance. The study suggests the need for randomized clinical trials to study long-term safety and effectiveness.
Researchers found that cardiac tamponade has decreased in incidence since widespread use of fibrinolytic drugs began. However, treatment delays are still a risk factor for the condition, and physicians should closely monitor acute heart attack patients to prevent it.
A genetic variant in PPAR-alpha has been linked to reduced heart pumping strength, with patients inheriting the polymorphism experiencing lower ejection fractions. The study's findings suggest that PPAR signaling may play a key role in the development of heart failure, and future research aims to develop therapies targeting this pathway.
Research found that African-Americans had higher blood pressure and heart rates, but also better artery response to treatment, leading to worse overall outcomes. The disparity in long-term mortality remains even when adjusting for patient characteristics and cardiovascular risk factors.
A large clinical trial of 7,599 heart failure patients found that good adherence to medication was associated with lower mortality rates and hospitalization rates for both placebo and active drug. The researchers suggest that improving adherence could help patients avoid frequent hospitalization and improve survival.
Duke University researchers found that heart surgery patients receive less aggressive discharge care, with gaps in the use of life-saving medications and behavior modifications. The study, based on data from a national registry, revealed underuse of aspirin, beta-blockers, and statins among surgical patients.
Researchers found that exercise increases VEGF production, which leads to an increase in capillaries within specific muscle fiber types. This change ultimately results in an anaerobic to aerobic shift in the affected muscle fibers.