Acute sleep deprivation leads to changes in nighttime urine production for men and women
... in both experimental periods. Following the sleep deprivation period, however, both genders produced markedly la...ly more pronounced in males than females. Sleep deprivation reduced the nighttime dip in blood pressure which can explain the lower levels of nighttime plasma r...Grapes, soy and kudzu blunt some menopausal side effects
... rats. Specifically, they have found that estrogen deprivation (by surgical removal of the ovaries) only modestly increases arterial pressure in hypertensive rats. However, in estrogen depleted rats, the removal of soy polyphenols from the diet results in a large increase in arterial pressure, putting the animal...U-M researchers find family of 'on switches' that cause prostate cancer
...ex hormone known to fuel prostate cancer. Androgen deprivation is a common therapy for prostate cancer. Knowing which gene fusion is involved in an individual patients tumor could impact treatment options. If an androgen-regulated gene is involved, androgen therapy would be appropriate. But if the gene fusion ...UB scientist discovers novel iron-copper alliance
...d copper homeostasis were strongly induced by iron deprivation across different developmental stages in the rat small intestine, said Collins. We will concentrate on understanding the role of two key proteins encoded by these genes: an intestinal iron transporter called divalent metal transporter 1 (Dmt1) and ...Chronically sleep deprived? You can't make up for lost sleep
... the sleep that was lost during the five-day sleep deprivation period. The findings support what other scientists have discovered in recent experimental studies in humans. Chronic partial sleep loss of even two to three hours per night was found to have detrimental effects on the body, leading to impairments i...Sleep deprivation affects airport baggage screeners' ability to detect rare targets
...ompromise the safety of airline passengers. Sleep deprivation can impair the ability of airport baggage screener...nted distractors. According to the results, sleep deprivation induced a speed/accuracy trade-off, in that the search rate sped up with time awake, but errors incr...New clues to stroke role in Alzheimer's
...estroy brain cells such as those damaged by oxygen deprivation during stroke. In further exploring the link between caspase activation and higher BACE levels, the researchers found that one of the proteins snipped apart by caspase activity is GGA3. This protein is an adaptor protein necessary for shepherding B...Parkinson's protein protects neurons from stress induced cell death
...the midbrain that produces dopamine. The resulting deprivation of this messenger substance causes symptoms like muscular tremor at rest and restricted mobility and even complete immobility. Characteristic deposits are found in the brain, the Lewy corpuscles. Little is known about the causes of Parkinsons dise...News tips from the Journal of Neuroscience
...of neurons expressing Cat-315-positive PN. Sensory deprivation of adult mice had no effect on Cat-315 staining. When whiskers were allowed to regrow after the initial 30 d deprivation, PNs did not recover but instead continued to decline, highlighting the importance of sensory activity during the first postnatal...Carnegie Mellon University research shows how sensory-deprived brain compensates
...esults should help shape future studies of sensory deprivation that results from stroke or traumatic brain injury, say the authors. "Our findings are the first to show this degree of brain adaptability in a setting with significantly limited sensory input," said Alison Barth, assistant professor of biologi...Shedding new light on proteorhodopsin
...ar energy source. This ability to withstand oxygen deprivation probably explains why so many ocean bacteria express proteorhodopsin." Liphardt said that the solar power option represents a potentially significant boost for efforts to develop alternatives to fossil fuel energy sources. Microbes that can simulta...Researchers discover master metabolism regulator with profound effect on fat metabolism
...dren all over the world who suffer from amino acid deprivation associated with protein malnutrition."...Carbon monoxide protects lung cells against oxygen-induced damage
...an infection. Without prompt treatment, the oxygen deprivation resulting from ARDS can be lethal. Even with appropriate treatment, however, about 30 to 40 percent of all people with severe ARDS die from the condition. In fact, it is the number one killer of patients in intensive care unit facilities in the Unite...How appetite-stimulating brain cells work overtime during fasting
...y demonstrated that hypothalamic responses to food deprivation involve at least three hormones, two cell types, and an unexpected interlocutor, uncoupling protein 2."...First biomarker for human sleepiness identified in fruit flies
...as amylase, which increases in activity when sleep deprivation is prolonged. Researchers hope to make amylase th...aw subjected the flies to different kinds of sleep deprivation and used microarrays to look for changes in activity in many different genes. Amylase levels consist...News tips from the Journal of Neuroscience
...ewn shut for days or weeks. As expected, monocular deprivation 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...Chronic jet-lag conditions hasten death in aged mice
...ortality is not yet clear, but could involve sleep deprivation or immune-system disruption. The body's physiological reaction to time change may be complex. Past research has indicated that circadian clocks govern physiological rhythms in a great variety of tissues in the body, and that different aspects of th...It's in your head: The brain's own globin defends you from shock and stroke
...obin is involved in the brain's response to oxygen deprivation and plays a protective role against brain damage. Structurally similar to hemoglobin (blood) and myoglobin (skeletal muscle), neuroglobin is found in neurons and is most prevalent in areas of the brain that have adapted to physiological stress, such ...Cortical plasticity: it's time to get excited about inhibition
...t the lasting cortical shut-down induced by visual deprivation at early stages of development is the result of a massive increase of cortical inhibition. Specifically, the strength of inhibitory synaptic connections between two types of neurons in the layer receiving the input the inhibitory fast-spiking basket......on in Rats The detrimental effects of monocular deprivation during early life are among the most studied phenomenon in neuroscience. The resulting reorganization of the visual cortex leaves the deprived eye compromised once it is uncovered. However, this week Iny et al., using rats, show a bidirectional and r...