Whether you're a human, a mouse, or even a fruitfly, losing sleep is a bad thing, leading to physiological effects and behavioral changes. Researchers used fruitflies to probe deeper into the cellular and molecular mechanisms that govern aggression and sleep and found that sleep deprivation reduces aggression in fruitflies and affects their reproductive fitness. They identified a related molecular pathway that might govern recovery of normal aggressive behaviors.
Parents who are less health literate may choose weight-loss strategies for their children that are unhealthy or not recommended. Governmental weight-control info may not be reaching families who need it most.
A study examining sea stars dying along the West Coast provides new clues about the starfish's immune response and its ability to protect a diverse coastal ecosystem. The team found that the sea stars have an immune response that is characterized by various types of immunities and that they have multiple aspects of the toll-signaling pathway, which is an important recognition.
Researchers have observed 'Luttinger-liquid' plasmons in metallic single-walled nanotubes. This holds great promise for novel plasmonic and nanophotonic devices over a broad frequency range, including telecom wavelengths.
Health economists have for the first time projected the total costs of caring for all people with autism spectrum disorder in the United States for the current calendar year and in 10 years if effective interventions and preventive treatments for the condition are not identified and widely available.
Wild chimpanzees in the forests of Uganda are increasingly eating clay to supplement the minerals in their diet, according to a long-term international study . The article describes how the researchers observed wild chimpanzees in the Budongo forest eating and drinking from clay pits and termite mounds.
Scientists write that sea-level rise (3.4 mm/yr) is faster in the Chesapeake Bay region than any other location on the Atlantic coast of North America, and twice the global average (1.7 mm/yr). They have found that dated interglacial deposits suggest that relative sea levels in the Chesapeake Bay region deviate from global trends over a range of timescales.
A new study estimates the association between change or constant habits in coffee consumption and the incidence of mild cognitive impairment (MCI), evaluating 1,445 individuals recruited from 5,632 subjects, aged 65-84 year old, from the Italian Longitudinal Study on Aging a population-based sample from eight Italian municipalities with a 3.5-year median follow-up.
Rewritable CDs, DVDs and Blu-Ray discs owe their existence to phase-change materials, those materials that change their internal order when heated and whose structures can be switched back and forth between their crystalline and amorphous phases. Phase-change materials have even more exciting applications on the horizon, but our limited ability to precisely control their phase changes is a hurdle to the development of new technology.
Annual 10 percent tobacco tax increases in New Zealand over the next 20 years should lead to health gains, net health system cost savings and modest reductions of about 2 percent to 3 percent in health inequalities between indigenous and non-indigenous people, according to a new study.
The world-wide deployment of biomedical devices for health monitoring, point-of-care diagnostics and environmental sensing is hampered by their high cost that is not readily affordable for developing countries. The primary task of a new project is therefore to reduce the price of the devices and allow for their high-volume delivery in a cost efficient manner. For the latter, a crucial aspect is to reduce the weight of the device.
Are the same regions and even the same cells of the brain area called hippocampus involved in encoding and retrieving memories or are different areas of this structure engaged? This question has kept neuroscientists busy for a long time. Researchers have now found out that the same brain cells exhibit activity in both processes.
Researchers have elucidated at the molecular level how an otherwise innocuous inherited mutation that is quite common in European populations interacts with a spontaneous somatic mutation to promote the development of Ewing’s sarcoma.
A team of sled dogs racing through the snowy forests of northern Canada conjures up the timeless spirit of exploration. But the intrepid youths on the sleds may not be exactly what you’re picturing – they’re young girls and boys with cancer.
The role of over 300 genes has been revealed by scientists across Europe in a major initiative to understand the part they play in disease and biology. All the findings from the project have been made publically available, allowing other scientists to use it in their own research. This will allow to understand more about genes we currently know very little about, and open up new avenues for research into the genetics of human disease, the scientists say.
Hepatitis B infections are among the most common infectious diseases worldwide. In the scope of an international study, scientists have determined how often the chronic infection occurs in different countries and how many people of the general population are affected. They noted strong differences between different countries.
Researchers have determined the mechanics behind of one of the most common epigenetic modifications: histone-tail acetylation. Acetylation is a means by which a cell can control the expression of its genes.
Every addiction is characterized by a strong desire for a certain addictive substance, be it nicotine, alcohol or other drug. Researchers recently conducted a study on heroin addiction and demonstrated that the stress hormone cortisol can reduce addictive cravings.
The participation rate of patients in pharmacogenomic trials has been the focus of recent study. The research has concluded that there are a number of factors at the patient, physician, institution and community level that serve as incentives or hindrances for clinical trial participation, including beliefs and attitudes, awareness, opportunities and resources.