Stress

Posttraumatic stress disorder (11)

Synopsis: Domenii: Health: Health generale: Illness: Nervous disorders: Stress:

including experiments into the use of beta blockers to reduce stress hormones. Some argue the development of new, more effective cognitive drugs,

blood pressure, core body and skin temperature, respiratory rate, blood oxygen levels, blood pressure and emotional stress levels.

#UCLA study IDS two genes that boost risk for posttraumatic stress disorder Why do some people develop posttraumatic stress disorder (PTSD)

"Many people suffer with posttraumatic stress disorder after surviving a life-threatening ordeal like war, rape or a natural disaster,

upregulation of a variety of stress defense mechanisms. Their experimental mice seemed to suffer from as much stress and consequences of stress as normal mice.

The different benefits of Myc reduction compared to other laboratory longevity extenders shows that just as there are many ways the body can break down with aging,

They may not want to go out on their own and deal with the risk and stress of a startup,

whilst simultaneously providing drivers with a stress-free, elegant mode of transportation. Article provided in agreement with Bradley Taylor who is a guest contributor to Earthtechling

can be particularly susceptible to cracks from thermal fatigue and stress corrosion. Most inspections are carried out with conventional ultrasonic testing that requires frequent changes of the probes in a high radiation environment,

and island communities around the Mediterranean are affected by water-stress problems. According to the European environment agency (EEA), 16 to 44 million additional people will suffer water scarcity in Southern Europe by 2070.

For drivers, SARTRE can reduce their stress and increase their comfort. It combines the advantages of public transportation,

A new study shows the girls with a family history of depression respond to stress by releasing much higher levels of the hormone cortisol.

Telomeres also shorten as a result of exposure to stress. Previous studies have uncovered links in adults between shorter telomeres and premature death more frequent infections and chronic diseases.

so girls at high-risk girls should learn stress reduction techniques Gotlib says. Other studies show that neurofeedback

Because a heart attack is such a stressful event Ubil created a list of genes that were known to be involved in cellular responses to stress.

eliminating the added stress for children of having to testify in court. Telehealth offers support and built-in peer review for nurses, physicians,

the same technology framework developed for bipolar disorder could prove useful in everything from schizophrenia and posttraumatic stress disorder to Parkinson disease,

#Plants can t run from stress, but they can adapt Scientists have discoveredâ a key molecular cog in a plant s biological clock.

and more resistant to environmental stress in West african environments than Asian varieties Wing says. African rice already has been crossed with Asian rice to produce new varieties under a group known as NERICA which stands for New Rice for Africa.

because many of the genes code for traits that make African rice resistant to environmental stress such as long periods of drought high salinity in the soils

The findings show promise for people suffering from posttraumatic stress and other mental anguish, says Gale Lucas, a social psychologist at University of Southern California Institute for Creative Technologies.

or in any living organism. emperature and drought are among the environmental stress factors that affect the structure of RNA molecules thereby influencing how genes are xpressedhow their functions are turned turned on

The object broke up 30 kilometers up under the enormous stress of entering the atmosphere at high speed.

For example sophisticated vintners use precise irrigation to put regulated water stress on grapevines to create just the right grape composition for a premium cabernet or a chardonnay wine.

he complex Rddm machinery is composed of several proteins that guide the genome in response to growth developmental and stress signals.

when designing nuclear reactors is finding materials that can withstand the massive temperatures, radiation, physical stress and corrosive conditions of these extreme environments.

reduces stress, and makes the milking station less of a bottleneck because there isn't a whole herd trying to get in at the same time.

and she makes the stress melt away at the end of a long day. But Lucy isn t Mr. Petrone s girlfriend.

##If it s a friend or a girlfriend, there s always points in time where there could be stress within that relationship,

Elevated p25 levels in the brain have been documented upon exposure to neurotoxic stimuli such as oxidative stress and beta amyloids. n this study

and the response to stress by dampening excitatory signals that involve the neurotransmitter glutamate. hronic stress or acute,

Patel said. ow can we see how that system is affected by stress and chronic (marijuana) use?

The special eyewear can potentially eliminate the need for follow-up surgical procedures and save patients from more stress and anxiety

resistance to stress and self-healing abilities could allow them to be used on airplane wings.

This stress was enough to make the cells pluripotent in as little as 30 minutes. Not only that they were more malleable than the ips cells developed back in 2006.

I would have thought never external stress could have this effect. The idea came from another biologist at the same facility Haruko Obokata who says it took her five years to persuade her colleagues that this technique would work.

The work ties into Obokata's other research into stress. As explained on her lab's web page All organisms possess instincts to survive exposures to external stresses by adapting to their environment and to some degree regenerating injured tissues or organs.

Those in hot, arid regions may be losing trees because of drought stress. Even if rainfall is stable,

and his team captured may be symptoms of climatic stress that make the forests more liable to such catastrophes."

"These changes in mortality rates are really an indication of overall system stress, and when trees are stressed,

Forget about it Current treatments for patients who have strong fearful memories, for example people with posttraumatic stress disorder (PTSD

#Brain-Sensing Headband Helps Users Manage Stress Technology and relaxation don always go hand in hand. However, a brain-sensing headband that reads brain waves

and manage stress. The Muse headband is lined with seven EEG sensors that detect the brain electrical activity

Users are asked then to participate in a three-minute guided exercise that aims to reduce stress, calm anxiety and increase focus and concentration.

Increased speed and higher voice tones for example are strong indicators of high stress levels. Readers placed around an office collect the data and push it to the cloud.

A study with Cornell University in 2013 for instance allowed the startup to prove that it could accurately predict high levels of cortisol in someone s saliva an indicator of high stress based on their tone of voice.

can make towers almost twice as strong to handle stress.)Smith compares the process to today at home installation of rain gutters:

This circuit could offer a target for new drugs to help treat conditions such as posttraumatic stress disorder the researchers say In the future one may be able to develop methods that help people to remember positive memories more strongly than negative ones says Susumu Tonegawa the Picower

and posttraumatic stress disorder but the neural circuitry underlying such malleability is known not. In this study the researchers set out to explore that malleability with an experimental technique they recently devised that allows them to tag neurons that encode a specific memory or engram.

whether reactivating pleasant memories has any effect on depression in hopes of identifying new targets for drugs to treat depression and posttraumatic stress disorder.

engineers can generate 3-D digital models of large structures to simulate how theyl fare under stress, vibrations, heat,

In one demonstration, for instance, a mining company used components available in the Akselos library to rapidly create a simulation of shiploader infrastructure complete with high-stress ot spotsthat needed inspection.

so they can visualize the stress, strain, and displacement in 3-D in their browser, he says. e think it a great way to show students the value of fast, 3-D simulations.

lowers joint stress; and drastically lowers the time required to acclimate to the prosthesis (which can take weeks or months with conventional models).

and experience greater musculoskeletal stress which causes joint osteoarthritis. The scientific and engineering research that ultimately led to today s Biom prosthesis was conducted by Herr s research group within the MIT Media Lab

as well as serve as plant-based biosensors and stress reducers. By adapting the sensors to different targets,

e found that there is a mechanism that can, in principle, close cracks under any applied stress,

shows a small crack (dark horizontal bar just right of bottom center) that mends itself as the metal is put under stress.

These defects have intense stress fields, which an be so strong, they actually reverse what an applied load would do,

it can heal. he stress from the disclinations is leading to this unexpected behavior, he says.

in conjunction with stress-driven grain boundary migration, could actually heal cracks. This is indeed provocative

coming to a sudden halt and putting stress on the threads, causing them to fail.

the sheller stopped at a more gradual pace, reducing thread stress. All shellers could then be modified,

releasing a bit of stress, and making it easier for a second atom to climb out of a trough

While conventional lithium-ion batteries are composed of brittle electrodes that can crack under stress the new formulation produces battery cells that can be bent,

if the dog is under unusual stress or if a chronic health condition may be worsening.

Macrophages accumulation in the arterial wall under atherogenic conditions such as high cholesterol triglycerides oxidative stress#are converted into lipids or laden foam cells

and that they also increase oxidative stress and toxicity. A recent update from the American Heart Association also suggested that fine particles in air pollution leads to elevated risk for cardiovascular diseases.

but none reported so far can sense the direction of stress. This is the kind of information that can tell our bodies a lot about the shape

piezoresistive interlocked microdome arrays are employed for stress-direction-sensitive, stretchable electronic skins. Here we show that these arrays possess highly sensitive detection capability of various mechanical stimuli including normal,

If there's a hole in the heart a patch has to take the full mechanical stress he said.

#Supercomputers reveal strange stress-induced transformations in world's thinnest materials (Phys. org) Interested in an ultra-fast unbreakable and flexible smart phone that recharges in a matter of seconds?

and break under stress. Fortunately researchers have pinpointed now the breaking mechanism of several monolayer materials hundreds of times stronger than steel with exotic properties that could revolutionize everything from armor to electronics.

In this study DFT calculations revealed the materials'atomic structures stress values vibrational properties and whether they acted as metals semiconductors or insulators under strain.

Ozden explained that the even distribution of stress along the belly-flopping nanotube which is many times longer than it is wide breaks carbon bonds in a line nearly simultaneously.

Fan calls his approach"a simple stress-based fabrication method"that, when applied to nanoparticle arrays, forms new nanostructures with tunable properties."

This external stress manually induced transitions in the film that synthesized new materials, "he said.

The stress-induced synthesis processes are simple and clean. No thermal processing or further purification is needed to remove reaction byproducts r

At the 90â°and 45â°impact angles on the other hand fewer atoms were involved in the impact so the stress was concentrated more on fewer atoms.

what happens under stress. In most thin film transistors, the material starts to crack, which,

The device was subjected to constant mechanical stress and its performance was evaluated. The fiber supercapacitor continues to work without performance loss even after bending hundreds of times Yu said.

and stress response genes when they hear the courtship song of a male. This helps them fight off sexually-transmitted infection from the fungus Metarhizium robertsii.

#Building Better Knees For The NBA The stress of repetitive jumping makes NBA players#particularly prone to painful even career-ending cartilage lesions.

When an electric current is applied to one of the DEAS it creates a biased stress between the two DEAS thus bending the actuator.

However first jump up tests showed that the stress resulting from a sudden braking of the momentum wheel led to mechanical deformations of the momentum wheels and aluminium frame.

and breaking mechanism to reduce the mechanical stress caused by the jump up. In addition to balancing my colleagues are now investigating the use of controlled manoeuvres of jumping up balancing

The mechanical stress of loading and unloading and the corrosive properties of seawater all take their toll on a vessel#structure.

This puts tremendous stress on the connection point, a conical clamping ring. Furthermore, once the parts have been joined together,

These noteworthy results were achieved by the non-destructive stress-relaxation ability of the unique electrodes as well as the good piezoelectricity of the device components.

showing structural stress corrosion cracking and wing panel composite skin abnormalities, engineers have had to do extensive analysis to develop repairs."

This expansion and contraction of aluminum particles generates great mechanical stress, which can cause electrical contacts to disconnect.

Gomez Andonaegui found that the price fluctuated so much that it was major stress in running his business.

The gel, similar to common hand sanitizer, minus alcohol and perfume, is able to rapidly switch from a solid to liquid state in response to stress.

without corners, we have rounded edges that you can really stress. And we were able to print them in half-rings.

when releasing lithium. his expansion and contraction of aluminum particles generates great mechanical stress, which can cause electrical contacts to disconnect.

The stress on wind turbine is recorded and then engineers can forecast its remaining service life. When a bearing is subject to a load

and the speed of sound is affected by the stress level in the material. Both these effects change the time of flight of an ultrasound wave through a bearing.

Fatigue and the stress of trying to plan one's life around visits to the bathroom can be debilitating.

or mechanical stress on the chromosomes into which our genetic material is packaged. To make sure cells stay alive

Researchers believe the results could lead to new ways of using the hormone to treat psychological problems such as stress and speech disorders.

They hope the discovery may help the search for treatments for disorders such as Alzheimer's, schizophrenia and post traumatic stress disorder (PTSD.

trapped, frozen or absorbed in some material-from the surface that is triggered by tidal stress on the moon.

and posttraumatic stress disorder. r

#Royal Navy could soon be using remote-controlled warships with'see-through'hulls Sleek and stealthy, it resembles something from Star wars. In fact,

or is caused under stress by road rage or similar. It then responds by offering a suitable massage and blowing air through its ventilation system.

and we derive stress and energy level from that,'Olaf Biedermann, director of innovation at Faurecia said.'

or mechanical stress, can also have undesirable consequences in terms of the material's strength, structure and performance.

Researchers propose to do this by making the plants better at handling stress. Now I know what you might be thinking tress limate changeit sounds like it time to call the plant acupuncturist.

when the plant detects stress. Beneath this superficially crude mechanism lie untold layers of regulatory nuance.

we'd expect these machines'performance to hit some roadblocks under stress. Still, with prices starting at just US$169 for the 11-inch model and $199 for the 14-inch, the race to the bottom is alive and well.

The repeated deformation exerts a strong mechanical stress that, over time, damages the electrode contacts

and can place a great deal of stress on someone who may already be quite ill. The new Tadpole Endoscope (TE

Dr John Coates, a fellow in neuroscience and finance at the University of Cambridge who specialises in the biology of risk taking and stress, said he is now getting bout one call a weekfrom financial institutions,

A firm called Equivital makes a chest-mounted wearable sensor that measures heart rate, stress, breathing, skin temperature and body position.

what it takes to cope with stress in much the same way that a sports star medical information might be handed over

The finding demonstrates that the stress of crystal deformation can impart a newfound degree of control over magnetic and electrical behavior in spintronic devices and sensors.

however, apply stress in all directions equally. he biggest challenge we faced was accurately controlling uniaxial stress at temperatures as low as 3 kelvin,

The team constructed a unique cell that clamps a multiferroic barium cobalt germanium oxide (Ba2coge2o7) crystal between a pair of zirconium oxide pistons (Fig. 1). They then investigated how the sample electric polarization changed under uniaxial stress.

In contrast, by deforming the Ba2coge2o7 crystal with varying levels of uniaxial stress, the researchers could tune the polarization output in unprecedented ways, from fully on to fully off,

because they show we can control the spin-driven ferroelectricity in this compound by applying uniaxial stress at the low megapascal level,

particularly for crystals with high levels of symmetry. any multiferroic materials have the potential to show stress-induced effects,

This expansion and contraction of aluminum particles generates great mechanical stress, which can cause electrical contacts to disconnect.

Limiting it to a single point allows us to control the parameters, like contact stress and geometry,

This"stress activated"process meant that, the harder the tip squeezed and sheared the ZDDP-containing oil between the tip and sample,

you get a high stress due to the concentration of force. When you push on a less stiff surface,

so the stress is lower. The thicker the film, the more it acts as a cushion to reduce the stress that is needed to cause the chemical reactions needed to keep growing.

It's self-limiting, or in other words, it has a way of cutting off its own growth".

Without being able to control the stress and geometry of a single point of contact

Being able to pinpoint the level of stress at which they begin to break down and form tribofilms allows researchers to compare various properties in a more rigorous fashion."

In elastocaloric materials a change in mechanical stress can create a change in temperature. In the Journal of Applied Physics("Elastocaloric effect of Ni-Ti wire for application in a cooling device"),a team of researchers from Technical University of Denmark report that the elastocaloric effect opens the door to alternative forms

or by applying an external stress. This is responsible for the temperature-induced"shape memory effect "and stress-induced"superelasticity."

"After the stress is removed, the crystal structure reverts back to its austenitic phase, which causes the material to cool down

effectively acting as a 2-D liquid("Interactions and Stress Relaxation in Monolayers of Soft Nanoparticles at Fluid-Fluid Interfaces".

function, or react to damage or stress, all of these things you could observe at an organ level,

creating an asymmetrical stress that makes the membranes fold. Argonne researchers are able to fold gold nanoparticle membranes in a specific direction using an electron beam

and maintain excellent focusing properties under high stress, lead author of the research, Phd candidate Xiaorui Zheng said. hey have the potential to revolutionise the next-generation integrated optical systems by making miniaturised and fully flexible photonics devices.

and deform plastically under application of stress.""That means that a metal thin film lateral spring structure cannot be used as a stretchable antenna,

or too much stress but their underlying cause has remained a mystery. Now researchers have found that a migraine may be triggered by a protein deep in the brain that stimulates the neurons controlling facial sensations.

which triggers the production of pro-inflammatory proteins in response to infection, tissue damage, or stress.

These noteworthy results were achieved by the non-destructive stress-relaxation ability of the unique electrodes as well as the good piezoelectricity of the device components.

both in normal conditions and in situations of stress--like the body experiences following a bone marrow transplant.

However, if cells are exposed to oxidative stress, SIRT1 ubiquitination promotes cell death. These results are important

as it can cause unnecessary psychological stress. The ongoing research will also look at costs. Breast tomosynthesis is a somewhat more expensive technique."

In these different organisms, under-expression of the enzyme induced hypersensitivity to oxidative stress (i e. to the toxicity of free radicals), a smaller number of synapses and abnormal neurotransmission due to a reduction in the number of vesicles carrying neurotransmitters.

The involvement of this enzyme in susceptibility to oxidative stress, which has frequently been observed in autistic children, its association with gastrointestinal diseases

"This expansion and contraction of aluminum particles generates great mechanical stress, which can cause electrical contacts to disconnect.

"Dissolving protein aggregates is a critical step in recycling defective proteins and providing protection against stress-induced cell damage.

But eventually those suppressed memories can cause debilitating psychological problems, such as anxiety, depression, posttraumatic stress disorder or dissociative disorders.

One kind, synaptic GABA receptors, works in tandem with glutamate receptors to balance the excitation of the brain in response to external events such as stress.

The findings imply that in response to traumatic stress, some individuals, instead of activating the glutamate system to store memories,

The drug rerouted the processing of stress-related memories within the brain circuits so that they couldn't be accessed consciously d

Scientists can use the NAPA to determine changes in cellular metabolite level distributions and metabolic noise upon environmental stress

the research group has determined the metabolic response of individual yeast cells to oxidative stress. Additionally, the NAPA platform has shown the capabilities to analyze a wide variety of biomolecules

such as cellular stress and the aging process also are thought to make misfoldings more likely. The new work has its origins in experiments conducted in Prusiner's lab in 2013,

This new breakthrough suggests that HSD10 reduces oxidative stress, promotes cell repair and prevents cellular death.

and protects the energy-making machinery from oxidative stress. HSD10 is a versatile protein with many known functions

but its role in oxidative stress has remained a mystery. The authors showed that HSD10 preferentially degrades highly toxic cardiolipin peroxides

free radical produced during oxidative stress that would normally initiate apoptosis, or cell death. HSD10 activity is inhibited strongly

"But with rampant oxidative stress leading to uncontrolled cellular death, you end up with diseases such as Alzheimer's and Parkinson's.

"When cardiolipin becomes damaged by oxidative stress, the newly formed cardiolipin peroxides induce apoptosis instead of energy production.

They observed whether such mice were resistant to muscle wasting induced by a high level of cortisol--a stress hormone released in your body any time you have a stressful situation such as an illness or a surgery.

or whether they are under stress. The team has found again by working with people with epilepsy, that stimulating a region called the medial temporal lobe,

as well as information about stress and perceived discrimination through interviews. Goosby found a strong correlation between perceived discrimination and levels of C reactive-protein protein,

put stress on power generators and lead to instabilities in the power system. Grid coordinators have the daily challenge of forecasting the need for

creating an asymmetrical stress that makes the membranes fold. Zhang Jiang and Jin Wang, X-ray staff at the APS,

or psychological stress induced epigenomic changes were mediated by ATF7-related transcription factors. After exposure to that stress, changes remained for a long duration of time.

This made researchers think that pathogen infections could induce epigenomic changes in macrophages via ATF7.

this new research provides better understanding about how our immune system remembers appropriate reactions to stress.

or stress levels in soldiers and pilots. In this study, engineers focused on uric acid, which is a marker related to diabetes and to gout.

Now University of Pennsylvania researchers have shown at the molecular level how experiencing stress changes a male mouse sperm in such a way that it affects his offspring response to stress.

me that seemingly mild stress to a male mouse would trigger this massive change in microrna response

had offspring with a dampened response to stress. When they compared sperm from the stressed fathers to their unstressed counterparts,

the researchers examined their response to stress, just as they had done in their 2013 study. he results mapped right onto

When subjected to a mild stress, in this case, being restrained briefly, the offspring that arose from the zygotes that received the multi-mir injections had lower cortisone levels compared to offspring in the control groups.

a brain region involved in directing stress regulation, suggesting widespread changes in early neurodevelopment. Finally the researchers aimed to determine how the mirs were carrying out this effect after fertilization.

when a male experiences stress it may trigger the release of mirs contained in exosomes from the epithelial cells that line the epididymis,

such as providing stressed males with enrichment or a reward, might prevent them from passing on an abnormal stress response to the next generation.

#Cell stress response and fat and obesity gene linked In one fell swoop, Cornell researchers have discovered mechanisms that control the function of a fat

and obesity gene while at the same time answering a longstanding question about how cells respond to stress.

without them cells would quickly die under stress, said Shu-Bing Qian, associate professor of nutritional sciences,

Many years ago, researchers observed that obese people have poor cellular stress responses. This may be because their heat shock proteins are reduced,

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