Acute sleep deprivation leads to changes in nighttime urine production for men and women
...for diet and fluid intake. Participants were sleep deprived during one of the two sessions in a randomized sequence. Their blood pressure and heart rate were recorded every hour using a non-invasive blood pressure monitor. Electrolytes, osmolarity, creatine and urea were evaluated in plasma and urine. Key blo...Chronically sleep deprived? You can't make up for lost sleep
...e discovered that when animals are partially sleep deprived over consecutive days they no longer attempt to ca...deeply or any longer than they did under non-sleep deprived conditions (baseline measurements). At the end of the study, the animals were given three full days ...Europe struggles to meet the challenges posed by PGD patients travelling abroad
... are left to identify clinics themselves, they are deprived of the benefit of medical advice, counselling and support at a vulnerable time. Secondly, the prohibition of PGD in their own country may complicate monitoring and follow-up. Self-referred patients, who may have identified clinics via the Internet ...New research shows sharks use their noses and bodies to locate smells
...n its ability to locate the source of an odor when deprived of information from its lateral line, particularly in the dark. According to Atema, since most odor plumes disperse in patches, fish locate odor sources through a process referred to as "eddy chemotaxis," or the tracking of odor and turbulence sim...New study indicates that people may need more dietary choline than previously thought
...mg a day of choline for up to 42 days. When deprived of the nutrient, 77 percent of men, 80 percent of postmenopausal women and 44 percent of premenopausal women developed fatty liver or muscle damage. Six men (23 percent) developed these signs while consuming the initial 550 mg of daily choline, eve...Different approach needed to protect brains of premature infants
...1-day-old mice. To simulate injury, researchers deprived the slices of oxygen and glucose for one hour. At all ages, the resulting damage hit hardest on glial cells, support cells that surround, nourish and protect brain cells; and axons, the treelike branches that brain cells use to communicate with each ...News tips from the Journal of Neuroscience
...x after deflection of contralateral whiskers. Mice deprived of ipsilateral whiskers for 1 week had increased c...receptive fields expanded into neighboring neurons deprived of whiskers. However, when ipsilateral whiskers were intact, spared whisker responses were relativel...Winner of Tyler Environmental Prize announced
...the billions of poor people on this planet who are deprived of clean drinking water and sanitation." Compared to energy-intensive traditional processes, anaerobic treatment actually produces energy in the form of methane gas, which can be reused as fuel. In addition, the method yields much less residue tha...Researchers discover master metabolism regulator with profound effect on fat metabolism
...ensitive to dietary intake," Cavener says. "Being deprived of even one essential amino acid is enough for the GCN2 kinase to switch the metabolism into an emergency mode. Despite the fact that these mice are consuming normal amounts of carbohydrates and fats, they rapidly shut down fat synthesis in the live...New study challenges 'critical period' in childhood vision development
...erson can acquire visual function even after being deprived of sight for an extended period during childhood. The evidence gathered from this case study presents a scientific alternative to the widely noted "critical period" that the brain undergoes during childhood. The critical period theory asserts that ...First biomarker for human sleepiness identified in fruit flies
...tion is required to rouse them. Like humans, flies deprived of sleep one day will try to make up for the lost time by sleeping more the next day, a phenomenon referred to as increased sleep drive or sleep debt. To identify a marker for sleep debt, Shaw decided to look in saliva. Easily accessible, saliva con...News tips from the Journal of Neuroscience
...rivation led to decreased light responses from the deprived eye, whereas responses from the nondeprived eye increased in the binocular, but not the monocular, zone of the cortex. Imaging by endogenous flavoprotein fluorescence proved to be superior to imaging of intrinsic signals both in terms of signal-to-no...Genomic comparison of lactic acid bacteria published
...spinach, it is easy to lose track of how bland and deprived our world would be without the contribution to our food supply of such benign microbial players as lactic acid-producing bacteria. Researchers from the U.S. Department of Energy Joint Genome Institute (DOE JGI) and the University of California, Davi...Leveling the field for babies with persistent pulmonary hypertension
...to study what happens to the hippocampus when it's deprived of critical oxygen and glucose. They are dissecting the no-doubt, complex chain of signaling that leads to neuronal death in babies and looking for viral delivery systems that can help protect brain cells....Tracking diseases by bait, plane, insects and fowl
...tus triseriatus), research has shown nutritionally deprived mosquitoes to be more efficient transmitters of the disease. Bevins examined this relationship by placing larvae of both species of mosquitoes together to see what effect the invasive mosquitoes had on native mosquitoes. She will discuss her results ...News tips from the Journal of Neuroscience
...ing reorganization of the visual cortex leaves the deprived eye compromised once it is uncovered. However, thi...vation, rats suffered severe loss of acuity in the deprived eye. The threshold, measurable 3C4 weeks after uncovering, was 0.20 cycles per degree and then impro...Improving urban environments: why children's voices should be heard
... of 11 and 12 year olds in a secondary school in a deprived urban area of South Gloucestershire to explore, and ultimately improve their local environment. The research project gave the children a leading role: not only did they help determine the focus of the research, they were also an integral part of ...Gazelles shrink liver and heart to reduce oxygen consumption during drought
...ss." Unexpectedly, the researchers also found that deprived sand gazelles had a higher fat content in the brain, revealing that gazelles may store fats in the brain to secure brain metabolism during prolonged food and water deprivation. Since 1928, Physiological and Biochemical Zoology has presented original...Eat less, weigh more? Enzyme makes lean mice 'susceptible' to dietary fat
... low-fat diet. Further analysis revealed that when deprived of food for four hours prior to feeding with standard laboratory mouse chow, the knockout mutant mice ate about 25 percent less food than their normal siblings. Therefore, the researchers concluded, CPT1c must play a role in feeding behavior and app...Discovery points to more effective ways of regulating cell signalling
... is overly repressed by SOCS3, then bone marrow is deprived of sufficient white blood cells required to rejuvenate the damaged immune system following chemotherapy. An unfortunate side effect of chemotherapy is damage caused to the bone marrow that produces the white blood cells of the immune system. This lea...