A team from the University of California, San Diego has identified the cells and protein responsible for detecting sour taste. The researchers found that each of the five basic tastes is detected by distinct receptors in separate cells, challenging a popular view that different tastes map to specific areas of the tongue.
A large follow-up study of over 50 families has identified more genetic perturbations in Loeys-Dietz Syndrome, providing clearer picture for diagnosis. The study emphasizes the importance of comprehensive clinical evaluations when diagnosing the disease.
Researchers warn that viruses like HIV and influenza can spread from monkeys to humans through contact in settings such as temples, markets, and homes. By taking precautions like using caution around monkeys, following proper wound care, and implementing public health measures, the risk of transmission can be reduced.
Researchers have gained insights into a critical reaction that transforms guanine base into 8-oxo-guanine, leading to cancer development. The reaction involves sodium ions promoting bonding between water molecules and the guanine base.
A new study recruiting up to 2,000 people from the remote Isles of Orkney aims to discover genes that predispose individuals to osteoporosis. The research will utilize a unique population isolated from the UK mainland, allowing for easier tracking and identification of genetic factors.
A US-Australian research team has detected radio pulses from a magnetar star, XTE J1810-197, which is giving off extraordinary radio pulses. The finding links this rare type of star with the much more common 'radio pulsars', reordering our understanding of these neutron stars.
Scientists have identified special proteins that help repair and protect the brain after it has been damaged by a lack of oxygen. Dr Nicole Jones and her team found that these proteins increase during oxygen deprivation, regulating processes like red blood cell production and glucose flow to the brain.
Researchers at the University of Washington have developed a tiny ion pump that can cool small microelectronic components efficiently. The device uses an electrical charge to create a cooling air jet and has been shown to significantly cool an actively heated surface on just 0.6 watts of power.
University of Iowa experts are warning that a commonly prescribed asthma medication combination can be deadly for certain patients. The long-acting asthma drug salmeterol used in combination with an inhaled corticosteroid can worsen asthma symptoms for those who do not need the combination, leading to life-threatening problems.
Men do not adopt a 'female model' of parenthood with part-time work and high levels of child care. Fathers prioritize flexible work arrangements to accommodate family life, rather than reducing their working hours. Current policies may not address fathers' needs for adaptability.
The study's findings suggest that the presence of oxygen in the atmosphere may not have been as absolute as previously thought, with fluctuations occurring over time. The researchers analyzed ancient sediments and found that sulfur isotope ratios did not exhibit abnormal patterns consistent with an oxygen-free atmosphere.
The Biophysical Society has recognized twelve members with its 2007 awards, honoring their outstanding contributions to biophysics. The awardees include Klaus Gawrisch, Ken A. Dill, and Taekjip Ha, who have made significant impacts in fields such as lipid biophysics, single molecule research, and education.
Researchers found that men with lower PSA levels after seven months of hormone therapy had a longer survival rate. Patients with undetectable or low PSA levels lived up to 75 months, while those with higher PSA levels survived for 13 months.
A water filtration technique that combines activated carbon with membrane filters has been found to remove at least 95% of microcystin-lr, a toxin secreted by blue-green algae found in lakes and rivers. The technique outperformed other methods, including ultrafiltration membranes, which struggled to remove the toxin due to its small size.
A team of Rensselaer researchers is working to improve the energy efficiency of green light-emitting diodes (LEDs) by doubling or tripling their power output. By leveraging the piezoelectric effect, they hope to develop a process to make higher-intensity green LEDs that convert electricity into light more efficiently.
Brandeis researchers discovered that cortical inhibition plays a key role in experience-dependent plasticity, with inhibitory networks within the cortex being highly plastic. This finding challenges traditional views on brain development and highlights the importance of targeting inhibitory networks for optimal cognitive growth.
Researchers have created a method to release substances into tumor cells using microcapsules and laser light, which could lead to more targeted cancer treatments. The technique involves heating the polymer shell of the capsule with infrared laser light, causing it to open and releasing its contents.
Researchers identified the cells and receptor responsible for sour taste, a primary gateway in all mammals for detecting spoiled food sources. The PKD2L1 receptor is found in a subpopulation of taste receptor cells on the tongue that do not function for sweet, bitter, or umami taste.
Researchers at Rice University found that single-celled microbes can recognize and preferentially associate with their relatives, directing altruistic behavior towards them. This ability is similar to kin recognition observed in animals and has significant implications for the social evolution of species.
A West Indian manatee has been sighted in various northeastern US waters, including the Hudson River and Cape Cod. Researchers used a manatee photo-identification database to rule out Chessie, a known manatee with distinctive markings, as the current traveler.
Researchers discovered that teens have similar numbers of unprotected sex acts with both casual and main partners, despite using condoms more often with casual partners. This highlights the importance of targeting adolescents' attitudes towards casual sexual partners in HIV intervention programs.
A recent study published in Science found that the number of tree species consumed by rainforest insects is comparable to those in temperate forests. The research, led by University of Minnesota plant biologist George Weiblen, rejects the notion that tropical insects are picky eaters who prefer fewer host plants.
Astronomers are using supercomputers to study the energy levels of high-temperature atoms in space, which hold the key to understanding black holes. The new calculations reduce error rates by a few percent, providing more accurate data for X-ray telescope observations.