A recent study found that reducing cigarette consumption by 25%, 50%, and 75% did not proportionally decrease the levels of carcinogens in smokers' urine. Despite a reduction in cigarettes smoked per day, NNK metabolites remained relatively stable. The authors suggest that people may compensate for reduced smoking by inhaling longer an...
A study led by Prof. Ehud Ahissar found that two types of neurons respond to whisking motion and surface contact, respectively, indicating a dynamic dance of perception where hands, eyes, and whiskers actively seek out sensation. This research has implications for optimizing artificial sensory aids for the deaf and blind.
A recent study found a correlation between the loss of olfactory receptor genes and the acquisition of full trichromatic color vision in primates. The research team analyzed 19 primate species, including humans, and discovered that Old World monkeys and apes had similar percentages of OR pseudogenes, while New World monkeys had lower p...
A JAMA study validates a new class of drugs for treating advanced Alzheimer's, improving cognitive function and daily life. The combination of memantine and donepezil shows statistically significant benefits for patients with moderate to severe Alzheimer's disease.
Researchers used AFM to study the effects of two monoclonal antibodies on beta amyloid peptide aggregation. The m266.2 antibody effectively inhibited protofibril formation, suggesting a promising approach for understanding conformational diseases like Alzheimer's.
Heather Jackson's research reveals ordinary scribbles and famous cases like Blake, Coleridge, and Keats help us understand past times better. The study explores how people thought about books, reading, and themselves, challenging the notion of consumers.
Purdue University researchers discovered that fat cells in humans defend against biochemical processes involved in illnesses such as diabetes and cancer. The study found that fat cells produce hormone-like proteins called cytokines to regulate the immune response.
A new study aims to investigate the effects of valproate on reducing agitation and slowing memory deterioration in patients with mild to moderate Alzheimer's. Researchers will also examine the drug's impact on brain volume loss and cell product manufacturing in Alzheimer's patients.
Researchers have discovered a brain receptor, GABA-A, that can be manipulated to control the switch between addicted and non-addicted states in the brain. By controlling this switch pharmacologically, it may be possible to take drug addicts back to a non-addicted state in a relatively short period of time.
Researchers found that ranolazine significantly reduced angina frequency and nitroglycerin consumption in patients with chronic angina. Additionally, exercise duration increased by 115.6 seconds after 12 weeks of ranolazine therapy, providing promising results for this treatment.
Researchers at the University of Virginia Health System have discovered that Lisofylline can protect insulin-producing beta cells from autoimmune destruction, allowing transplanted islet cells to function for over 65 days without immunosuppression. This breakthrough could lead to a new treatment approach for type 1 diabetes patients.
Purdue University scientists discovered that simple sugars, particularly galactose, are essential for maintaining plant cell wall strength. The study found that enzymes break down xyloglucan polymers during growth, allowing microfibrils to separate and new fibers to be integrated, preventing the cell wall from becoming too thick.
Researchers identify four copies of a target gene on separate chromosomes, eliminating possibility of sexual reproduction. This confirms that the ancient microbe has evolved without sex for tens of millions of years.
A pooled analysis of 15 clinical trials reveals that radiotherapy significantly reduces breast cancer recurrence and mortality rates after breast-conserving surgery. Women who received radiotherapy had a lower risk of relapse and mortality compared to those who underwent surgery alone.
Flexible organic light emitting devices (FOLEDs), developed by University of Toronto engineers, offer a potential solution for future generations of bendable television, computer and cellphone screens. The technology could be manufactured using low-cost, high-efficiency mass production methods within two to three years.
NASA satellites provide daily, high-quality data on crop productivity, surface temperature and snow cover to support decision-making for FAS analysts. The data helps monitor natural disasters' impact on crops and assess water levels in lakes and reservoirs.
Researchers found that HIV uses Nef to activate Rac activity in DOCK2ELMO1 complex, disrupting T cell migration and interaction with other lymphocytes. This study provides biochemical evidence for Nef's role in subverting immune response pathways controlled by receptors on T cells.
Researchers discovered that a special protein called importin beta is produced at the site of damage in axons, facilitating the entry of molecules into the nucleus. Blocking this process inhibits nerve regeneration, highlighting the need to identify proteins containing the "healing message"
A study by Professor John Cairney and Julie Ann McMullin found that people's self-esteem drops after middle age, especially for low-income earners. The researchers suggest changing negative perceptions and stereotypes associated with gender and age can help build confidence as we age.
The study found that wearing seat belts by rear seat occupants can prevent about 1 in 6 deaths of restrained front targets. Wearing restraints also reduces the risk of death for all rear targets, with a 15% increase when an occupant in the same seat row is not restrained.
Researchers used genetically modified yeast to pinpoint mutations responsible for antibiotic resistance in Pneumocystis jirovecii, a pathogen causing severe pneumonia. The study reveals potential targets for designing new drugs to prevent resistance.
A recent study found that only 37% of adults with diagnosed diabetes are achieving the American Diabetes Association's goal for blood glucose control, while nearly half have high cholesterol and high blood pressure. The lack of lifestyle changes, such as exercise and weight loss, is a major contributor to this issue.
Researchers found memantine significantly improved cognitive function, activities of daily living, behavior, and clinical global status in patients with moderate to severe AD. Treatment with memantine maintained cognitive function, while placebo was associated with decline.
A study examining trends in adults with diagnosed diabetes found that only a small percentage met recommended targets for HbA1c, blood pressure, and total cholesterol. The authors highlight the need for ongoing monitoring, empowering clinicians and patients to improve care quality and reduce vascular disease risk.
Research by Emory University Health Sciences Center suggests that reward mechanisms involved in addiction likely play a role in regulating pair bonds between monogamous animals. The study found that oxytocin and vasopressin receptors, critical for pair bond formation, are located in two brain regions with heavily interconnected structu...
Researchers recorded neuronal firing patterns in rats during normal sleep-wake cycles and found that neural activity reappeared after novel experiences for up to 48 hours. This reverberation was enhanced during slow-wave sleep and may support a mechanism for recalling and amplifying memories.
Researchers discovered a specialized DNA polymerase that can rescue stalled replication processes when encountering foreign material, even if it contains damage. This shows the remarkable ability of cells to reproduce and cope with genetic errors.
A meta-analysis of genetic counseling for breast, ovarian, and colorectal cancer found improved knowledge of cancer genetics, but no impact on perceived risk. A gene mutation affecting folate metabolism alters the sensitivity of colon and breast cancer cells to chemotherapy drugs.