The world's great animal migrations are experiencing steep declines and disappearances due to human activities such as dam construction, overfishing, and habitat destruction. The loss of these migrations not only disrupts the natural balance but also has significant effects on the ecology of surrounding landscapes.
Eating a diet high in sugar-sweetened beverages and low in fruits and vegetables may increase the risk of type 2 diabetes. Consuming more than one soft drink per day or drinking two or more fruit drinks daily increases the risk by 24% and 31%, respectively. In contrast, a low-fat diet does not appear to impact diabetes risk.
A team of biologists has identified a collection of novel proteins transferred from male to female fruit flies during mating, which influence female behavior and favor male success. The study reveals that these proteins are rapidly evolving and potentially under intense selection pressure.
A new study reveals that dividing cells exhibit an unprecedented level of regulation, with over 1,000 proteins becoming highly phosphorylated. This discovery has significant implications for understanding cell cycle disorders and developing therapeutic targets.
Researchers have discovered two new β-Lactam antibiotics that target MRSA, a major global health threat responsible for approximately 20,000 US deaths annually. The novel compounds interact with the MRSA cell wall enzyme PBP 2a, inhibiting its function and leading to bacterial cell death.
A new species of Bagworm Moth with predatory larvae has been discovered in Panama's tropical forest. The larvae construct portable structures called 'bags' to capture prey, including spiders and insects.
A new study by scientists from Brazil, France, and the US reveals that no-till management combined with winter cover crops is the most effective way to retain nutrients in tropical soils. The research found that this approach can maintain soil organic carbon stocks and mimic natural forested conditions.
A new DNA study from the University of Adelaide has challenged long-held claims of pre-historic Polynesian contact with South America. The study found no evidence to support the idea that chickens were introduced to South America by Polynesians before Spanish arrival.
Researchers in the Center for Excellence in Rural Safety mapped out every fatality in the nation, providing a detailed view of road fatalities and life-saving public policies. The interactive tool allows users to visualize the impact of strong seat belt laws and other safety measures on their local roads.
A study found that high omega-3 fatty acid intake from eating large quantities of fish may explain Japan's very low levels of heart disease. This is due to a strong anti-atherogenic effect observed in Japanese men, who consume an average of 100g of fish daily.
After losing a significant amount of weight through calorie restriction, bone turnover remains accelerated, leading to increased fragility. Researchers found that moderate weight loss followed by weight maintenance resulted in persistent elevated bone remodeling markers.
Researchers found that SOD1 protein stability and aggregation propensity are key factors in predicting patient survival. Mutations that increase stickiness and decrease stability of the protein correlate with reduced survival times.
Researchers found hundreds of genes affected by bacterial partnership in a squid host, including those associated with human responses to bacteria. This discovery may change our understanding of the main purpose of the immune system.
The University of Maryland's START research center will extend its study on radicalization, terrorist operations, and community resilience with a new $12 million DHS grant. Researchers aim to understand the dynamics of radicalization and develop effective counter-terror strategies.
Researchers at VCU are part of an international team studying the genetic variants that impact recurrent major depression. The five-year project aims to establish a large data set of phenotypes and genotypes.
A study published in Archives of Internal Medicine found that approximately 29 million Americans have speech frequency hearing loss, while an estimated 55 million have high-frequency hearing loss. The prevalence of hearing loss varies by age, gender, and ethnicity, with men being more likely to experience it.
Researchers at Argonne National Laboratory have discovered a new class of glassy materials governed by dynamic disorder. The discovery reveals the role of temporal frustration in disrupting magnetic alignment, allowing for better understanding of how glasses are formed.
A new study published in The Lancet warns that HIV transmission could quadruple in certain populations if people with HIV follow potentially misleading advice. Mathematical modeling predicts that HIV transmission would be four times higher in serodiscordant couples who abandon condom use.
A new combination therapy using raltegravir has shown promising results in treating HIV, particularly in patients with highly resistant strains. The study found that 62% of patients achieved undetectable viral loads, while only 1 in 3 receiving a placebo showed similar reductions.
Researchers found a compound in germinated brown rice that helps normalize blood sugar and enzymes out-of-whack with diabetes. This growth factor, ASG, increases levels of good enzymes and helps protect nerve membranes and homocysteine levels.
Researchers found that PDE5 inhibitors like Viagra and Levitra can open the blood-brain tumor barrier, allowing cancer-fighting drugs to reach malignant brain tumors. This breakthrough may improve drug delivery to brain tumors in patients.
A study by Boston University researchers found a significant association between regular consumption of sugar-sweetened soft drinks and fruit drinks with an increased risk for type 2 diabetes in African-American women. The incidence of type 2 diabetes rose with increasing intake of both types of drinks.
A recent study found that overweight and obese women require significantly more exercise to sustain a 10% weight loss over two years. Women who maintained this level of weight loss performed more physical activity and had better eating habits, highlighting the importance of comprehensive interventions for long-term success.
The research aims to understand the role of inorganic molecules, particularly zinc, in signaling events surrounding fertilization and early embryonic development. The team will use advanced microscopy and imaging technologies to track metal ion movement and develop new fluorescent sensors.
The kipunji monkey is critically endangered with only 1,117 individuals remaining in the wild. Habitat degradation and poaching pose significant threats to its survival.
The W.M. Keck Foundation has announced its 2008 class of Distinguished Young Scholars in Medical Research, recognizing outstanding young scientists making significant contributions to biomedical research. The awardees will receive grants of up to $1 million to support their research activities for five years.
Researchers found that parasitic flies in bee cells affect the size and behavior of emerging bees. Smaller bees are more likely to act as workers, while larger ones become queens. The study suggests that parasites may promote sociality in certain situations.
A recent review of literature found that hormone deprivation therapy can have subtle adverse effects on cognition in prostate cancer patients, affecting recall, concentration, and high-order capacities. Between 47% and 69% of men treated with androgen depletion therapy decline in cognitive function.
The report found that paediatric-oncology care varied substantially between countries, with access to care or management extremely poor in seven out of ten nations. The five-year survival rate was as low as 5% in some countries, while higher rates were observed in those with greater health expenditure and infrastructure.
According to a study published in Obesity, over 86% of Americans are expected to be overweight or obese by 2030 if current trends continue. This would result in significant healthcare costs and an increased risk of various health conditions.
Researchers at Rush University Medical Center discovered that proton channels in basophils respond to agents triggering histamine release, with zinc inhibiting these currents. This finding points to a new approach to reduce the consequences of asthma and allergic reactions.
Researchers found that water temperature in Antarctica was too warm for modern-day ice to exist, with temperatures ranging from 11-13°C at the surface and 23-25°C at the bottom. The study suggests a greenhouse Earth, with warmer seas and little or no ice in Antarctica, according to research published this week in Geology.
Researchers have identified microRNAs in blood plasma and serum that can signal the presence of various solid-tumor cancers at an early stage. The discovery has potential to become a new class of biomarkers for early cancer detection, offering advantages over protein-based systems.
Eating CLA-enriched cookies increases levels of conjugated linoleic acid in breast milk, a potentially healthful fatty acid. The study found significant higher levels of CLA in breast milk from women who ate CLA-enriched cookies compared to those who ate regular cookies.
A study found that sensitive HIV testing can detect low-level drug-resistant strains in patients who have not received anti-HIV drugs. In some cases, these resistant strains were present before treatment began and contributed to treatment failure. Further research is needed to confirm these findings.
Researchers have digitally reconstructed a nearly complete skull of the extinct lemur species Hadropithecus stenognathus, providing new insights into its diet and body size. The study reveals that the lemur was as large as a male baboon and had a brain size comparable to some large monkeys.
A Brandeis study finds that mutated protein superoxide dismutase leads to toxic levels of the protein in motor neurons, causing cell death in ALS patients. The research aims to develop drugs targeting key proteins to prevent aggregation and treat the disease.
Researchers at Tel Aviv University found that Ritalin, used for Attention Deficit Disorder, can improve seniors' cognitive abilities and gait, cutting the risk of serious falls. The study suggests using Ritalin to reduce fall risk in older adults by targeting cognitive deficits.
Researchers have created a new source of platelets that can be used for transfusions, addressing the risk of blood infections and improving clotting function. The innovative approach involves using a stem cell population already committed to becoming platelets, and blocking enzymes that cause clotting defects.
A University of Tennessee at Knoxville researcher has found that the ability of flowering plants to quickly and efficiently move sperm through a part of the plant was the key to their evolutionary diversity. This ancient trait allowed plants to grow longer pollen tubes, enabling them to develop more complex flowers and larger seeds.
A large population-based study of 659,000 women found that almost 20% develop type 2 diabetes within 9 years of pregnancy. The rate of diabetes increased rapidly after delivery, peaking at 9 years. Higher urban statistics and older mothers also increase risk factors for gestational diabetes.
A new urban transit bus features a high-strength stainless steel body and chassis, reducing weight and improving fuel efficiency. The bus is powered primarily by stored electrical energy, driving fuel economy gains.
Researchers at Berkeley Lab have developed a nanoelectromechanical system (NEMS) that can weigh individual gold atoms, measuring masses as small as two fifths of a gold atom in just over one second. The NEMS mass sensor uses carbon nanotubes and achieves sub-single-atom resolution at room temperature.
A study of 10,000 postmenopausal women found that higher bone mineral density was associated with a 25% increased risk of developing breast cancer. Adding bone mineral density tests to current risk assessments may improve the prediction of breast cancer risk in older women.
A new OSU study finds that exposure to bad air can significantly spike blood pressure in those already predisposed to high blood pressure. Researchers exposed rats to everyday human-breathed pollutants and observed a direct link between air pollution and cardiovascular disease.
Scientists have discovered over 80 new proteins in seminal fluid that can influence the reproductive success of fruit flies. The discovery sheds light on how males and females interact through protein transfer during mating, revealing a complex interplay between cooperation and competition.
A study found that babies born to mothers living in the Seveso area after a 1976 chemical accident are six times more likely to have altered thyroid function. Maternal exposure to dioxins has been shown to damage the function of their babies' thyroid gland.
A recent review of the literature found that hormone deprivation therapy can have subtle adverse effects on cognition in prostate cancer patients. Studies indicate that between 47% and 69% of men treated with androgen depletion therapy decline in at least one cognitive area, primarily in spatial ability and high-order capacities.
Women with low or high thyrotropin hormone levels have a higher risk of developing Alzheimer's disease, according to a recent study. The research found that these hormone levels were associated with an increased risk of incident Alzheimer's disease in women, but not in men.
A new study found that testosterone predominance during menopause is associated with a higher prevalence of metabolic syndrome, which increases the risk of cardiovascular disease. The study suggests that testosterone may play a more significant role in cardiovascular risk than previously thought.
A new study led by the University of Michigan found that people at high risk for dementia who took cholesterol-lowering statins were half as likely to develop dementia. The five-year study involved older Mexican-Americans with metabolic conditions and showed a significant reduction in dementia risk.
A US study finds a 3,196% increase in fatal domestic medication errors involving alcohol and/or street drugs, linked to the shift from clinical to domestic settings. The study highlights the need for increased research on medication errors, particularly in middle-aged patients and domestic settings.
A recent study published in the American Cancer Society's journal found that hip bone mineral density can provide additional information for predicting breast cancer risk. Women with higher bone mineral density scores had a 25% increased risk of developing breast cancer, while those with high Gail scores had a 35% increased risk.
Scientists at the University of Warwick have found four types of fungi effective against varroa mites, which feed on honey bee circulatory fluid and transmit diseases. The researchers are exploring ways to deliver these killer fungi through various methods, including foot baths and powder sprays.
Researchers found that a lifetime of eating tuna, sardines, salmon and other fish appears to protect Japanese men against clogged arteries despite other cardiovascular risk factors. Omega-3 fatty acids from fish were linked to low levels of atherosclerosis.
Three studies demonstrate that soils in different regions respond similarly to management practices to increase soil carbon storage. Soil organic C increases with higher C input, but gains are often confined to labile fractions and larger aggregates.
A new study reveals that two-thirds of South African schoolboys report being forced to have sex before the age of 18, mostly by female perpetrators. The research highlights systematic differences in frequency and type of perpetrator across provinces and rural-urban areas.
Research led by the University of New South Wales found that individuals with atopic diseases such as asthma and hay fever are up to 40% less likely to develop NHL if they have multiple conditions. Chronic atopy is associated with a reduced risk, particularly in B-cell NHL cases.
Caltech bioengineers create a super-compact high-resolution microscope, small enough to fit on a finger tip, operating without lenses. The optofluidic microscope can be used in the field to analyze blood samples and mass-produced for $10.
A study published in Neurology found that statin users were about half as likely to develop dementia as non-users. Researchers analyzed data from 1,674 Mexican Americans over 60 years old and found a significant association between statin use and reduced risk of cognitive decline.
Researchers are surveying 1,500 Mexican-American males living on the U.S.-Mexico border to examine their alcohol consumption and behavior. The study aims to understand how acculturation, religious affiliation, cultural influences, and cost affect drinking habits in this population.
Researchers found insulin resistance in young girls with PCOS mother, suggesting high risk of disease; future studies aim to identify earliest sign of susceptibility. Excessive insulin may be primary culprit behind reproductive abnormalities.
A new analysis of a 2005 survey found that male students were more likely to carry weapons than females, with certain racial groups also being overrepresented. The study suggests that socioeconomic factors, such as living in violent neighborhoods, may contribute to the carrying of weapons among disadvantaged students.
A study published in The American Journal of Pathology suggests that fibrocytes, cells involved in wound healing, can form premetastatic niches that facilitate cancer spread. Researchers found that injecting these cells into mice nearly doubled the rate of metastasis, a finding that could lead to new treatments.
The Hospital Clínic de Barcelona is part of the ICREL project, which aims to analyze the impact of European legislation on clinical trials. The project involves multiple stakeholders and will gather information from surveys to adapt current legislation and identify areas for improvement.
Researchers found that oxytocin increases the encoding of positive social memories, allowing individuals to better recall happy faces. This breakthrough has potential implications for treating psychiatric disorders related to social isolation.
A nationwide study found a sharp increase in skin infections, with abscesses and cellulitis rates nearly quadrupling in safety-net emergency departments and tripling among children. The study suggests community-acquired MRSA is the main cause of this rise, affecting all populations but those over 45 less severely.