Current Blood flow News and Events

Current Blood flow News and Events, Blood flow News Articles.
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High blood pressure in midlife is linked to increased brain damage in later life
Higher than normal blood pressure is linked to more extensive brain damage in the elderly, according to a new study published today in the European Heart Journal. In particular, the study found that there was a strong association between diastolic blood pressure (the blood pressure between heart beats) before the age of 50 and brain damage in later life, even if the diastolic blood pressure was within what is normally considered to be a healthy range. (2020-11-25)

Cocoa flavanols boost brain oxygenation, cognition in healthy adults
The brains of healthy adults recovered faster from a mild vascular challenge and performed better on complex tests if the participants consumed cocoa flavanols beforehand, researchers report in the journal Scientific Reports. In the study, 14 of 18 participants saw these improvements after ingesting the flavanols. (2020-11-24)

To push or to pull? How many-limbed marine organisms swim
Couinter-intuitively, small marine animals don't use their limbs or propulsors to push themselves through the water while swimming. Instead, their appendages create negative pressure behind them that pulls the animal through the water, scientists from the Marine Biological Laboratory report. (2020-11-24)

Contact lenses for diagnostic and therapeutic use
A collaborative team, which includes a group from the Terasaki Institute for Biomedical Innovation, has developed a fabrication method to meet all the challenges in making a hydrogel contact lens for biomarker sensing. The specially engineered contact lenses use tears to monitor patient health. (2020-11-23)

Targeting calcium overload could improve stroke outcomes, research suggests
Excessive calcium contributes to harmful inflammation in ischemic stroke, and targeting it may provide doctors with a new way to improve patient outcomes. (2020-11-23)

Tracing the flow of cerebrospinal fluid
Understanding how the clear, watery substance flows through the brain could yield new insights into health and disease. (2020-11-23)

Unlocking cheaper chemicals
A new technique to make cheaper more efficient biological enzyme hybrids could have valuable applications in future water recycling, targeted drug manufacturing and other industries, Flinders University green chemistry researchers say in a new publication. The model enzyme system, which immobilises a catalyst enzyme hybrid for continuous flow use in the high-speed vortex fluidic device, showed a 16-fold increase in its efficiency, the researchers say in American Chemical Society journal, ASC Applied Materials & Interfaces. (2020-11-22)

Researchers develop more efficient method to recover heavy oil
The current global supply of crude oil is expected to meet demand through 2050, but there may be a few more drops to squeeze out. By making use of a previously undesired side effect in oil recovery, researchers have developed a method that yields up to 20% more heavy oil than traditional methods. Tokyo University of Agriculture and Technology (TUAT) team published their results on August 24 in Energy & Fuels, a journal of the American Chemical Society. (2020-11-21)

Biofriendly protocells pump up blood vessels
In a new study published today in Nature Chemistry, Professor Stephen Mann and Dr Mei Li from Bristol's School of Chemistry, together with Associate Professor Jianbo Liu and colleagues at Hunan University and Central South University in China, prepared synthetic protocells coated in red blood cell fragments for use as nitric oxide generating bio-bots within blood vessels. (2020-11-20)

A bypass route for the coronary vessels in the heart?
When the heart develops, some of its coronary blood vessels develop from cells lining the inner surface of the heart's ventricular chambers (endocardium). Novel findings suggest that new blood vessel growth in the heart can be stimulated with the VEGF-B growth factor from the same source after myocardial infarction to increase blood delivery to the damaged area. (2020-11-19)

Elephant genetics guide conservation
A large-scale study of African elephant genetics in Tanzania reveals the history of elephant populations, how they interact, and what areas may be critical to conserve in order to preserve genetic diversity of the species. (2020-11-19)

Three reasons why COVID-19 can cause silent hypoxia
To crack the mystery of what causes silent hypoxia, a condition when oxygen levels in the body are abnormally low, BU biomedical engineers used computer modeling to test out three different scenarios that help explain how and why the lungs stop providing oxygen to the bloodstream. (2020-11-19)

Small finlets on owl feathers point the way to less aircraft noise
Collaboration between City, University of London and RWTH Aachen University researchers reveals how these micro-structures enable silent flight. (2020-11-18)

Peel-off coating keeps desalination cleaner and greener
A polyelectrolyte coating enables clean seawater desalination systems without harmful chemicals. (2020-11-16)

Exercised over nothing: Masks don't impair lung function during physical activity
A team of American and Canadian researchers report that while they may feel uncomfortable, there is little empirical evidence that wearing a facemask significantly diminishes lung function, even when worn during heavy exercise. (2020-11-16)

A change of heart -- new drug for HCM reduces heart mass
For the first time, a medication has impacted heart muscle thickness and function for patients with the most common inherited heart condition, hypertrophic cardiomyopathy, rather than simply addressing their symptoms. (2020-11-16)

New phase of modeling the viscous coupling effects of multiphase fluid flow
Researchers led by Kyushu University found a way to incorporate key phenomena called viscous coupling effects into models of multiphase flow in porous materials. The technique combines two approaches--pore network modeling and the lattice Boltzmann method--to provide detailed pore-scale information and good computational efficiency. The work could have implications for many applications that involve multiphase flow in porous materials, such as oil recovery and carbon dioxide storage. (2020-11-16)

Additional heart imaging valuable for women with unexplained heart attacks
Combining diagnostic imaging methods can detect the underlying cause of heart attack in women who did not have blocked arteries. This international, diagnostic, prospective, observational study suggested that additional heart imaging is feasible and has the potential to guide medical therapy to prevent subsequent heart attacks. (2020-11-14)

Possible 1,000-kilometer-long river running deep below Greenland's ice sheet
Computational models suggest that melting water originating in the deep interior of Greenland could flow the entire length of a subglacial valley and exit at Petermann Fjord, along the northern coast of the island. Updating ice sheet models with this open valley could provide additional insight for future climate change predictions. (2020-11-12)

Brain metastases cause severe brain damage that can be inhibited by treatment
By using a specific treatment to override this activation, the researchers were able to return cerebrovascular flow to healthy levels. This improvement in blood flow around the metastases can limit the neurological deterioration associated with the progression of this disease and improve the otherwise poor life expectancy of these patients. (2020-11-12)

Modelling microswimmers for drug delivery
An international group of theoretical physicists led by Abdallah Daddi-Moussa-Ider from Düsseldorf, Germany, has modelled the motion of microscopic, motile bodies - either powered micro-machines or living cells - in viscous liquid drops, using the Navier-Stokes equations. This work, which has applications in materials science and medicine, is now published in EPJ E. (2020-11-11)

New source of lymphatic system leak discovered in children with rare open heart surgery complication
Interventional radiologists with Nemours Children's Health System have identified a new source of abnormal lymphatic flow between the liver and the lungs that may be responsible for some cases of plastic bronchitis. Plastic bronchitis is a rare but serious late complication in patients with congenital heart disease who had Fontan surgery. A report detailing the discovery of this fluid leak, and successful treatment of two cases was published in European Heart Journal. (2020-11-11)

The mental state of flow might protect against harmful effects of quarantine
A survey of over 5,000 people in Chinese cities affected by COVID-19 in early 2020 suggests that people who quarantined for a longer period of time generally experienced poorer well-being--but that experiencing the mental state of flow reduced or eliminated that link. Kate Sweeny and colleagues at the University of California, Riverside, U.S., Central China Normal University, China and Nanjing University, China and colleagues present these findings in the open-access journal PLOS ONE on November 11, 2020. (2020-11-11)

Protein in blood may predict prognosis, recovery from stroke
Researchers at Mayo Clinic in Florida and collaborators have found that a biomarker in the blood may determine the extent of brain injury from different types of strokes and predict prognosis in these patients. Their findings are reported in Science Translational Medicine. (2020-11-11)

Valves on N95 masks do not filter exhaled droplets
Matthew Staymates, fluid dynamicist at the National Institute of Standards and Technology, is studying different mask types to determine which are the most effective at reducing disease transmission. In Physics of Fluids, he describes exploring the basic flow dynamics of N95 masks with or without exhalation valves. To do this, he generates stunning video from his schlieren imaging, a method to visualize the fluid flow away from the surface of an object, and light scattering. (2020-11-10)

Tracking down the causes of heart attack
Heart attacks strike suddenly and have a range of different triggers. Researchers from Charité - Universitätsmedizin Berlin and the German Centre for Cardiovascular Research (DZHK) were able to uncover a further underlying cause. Studying arterial deposits (plaque) in patients with acute coronary syndrome, the researchers found that, in some patients, these were characterized by activated immune cells which, as a result of altered flow conditions within the vessel, had accumulated on the interior arterial wall, causing damage to the arterial lining. (2020-11-10)

New medication may treat underlying causes of hypertrophic cardiomyopathy
Mavacamten, a new investigational cardiac medication, may improve heart function for people with thickened heart muscle leading to obstructed blood flow through the heart, a condition known as obstructive hypertrophic cardiomyopathy. The treatment appears to improve heart structure, reduce cardiac filling pressures (decrease measures of stiffness) and restore normal mitral valve motion. (2020-11-09)

Rapid test shows 'solid performance' for diagnosing infection around joint implants
The recently FDA-authorized alpha-defensin lateral flow test is a highly accurate, ten-minute test for diagnosis of periprosthetic joint infection (PJI) - a serious and costly complication of total joint replacement, reports a study in The Journal of Bone & Joint Surgery. The journal is published in the Lippincott portfolio in partnership with Wolters Kluwer. (2020-11-09)

Recipe for a storm
Turbulence is an omnipresent phenomenon - and one of the great mysteries of physics. A research team from the University of Oldenburg in Germany has now succeeded in generating realistic storm turbulence in the wind tunnel of the Center for Wind Energy Research (ForWind). (2020-11-04)

Noise reduction via intermittent control by utilizing a plasma actuator
A research team at Toyohashi University of Technology developed a method for reducing aerodynamic noise via plasma. Cavity flow, such as the flow around car gaps of high-speed trains, often radiates aerodynamic noise. A plasma actuator inducing flow was applied to suppress this noise. By periodically switching off the power of the plasma actuator, a higher reduction in sound pressure level was observed when compared with continuous operation under the same power consumption. (2020-11-04)

Squid jet propulsion can enhance design of underwater robots, vehicles
Squids use a form of jet propulsion that is not well understood, especially when it comes to their hydrodynamics under turbulent flow conditions. Discovering their secrets can help create new designs for bioinspired underwater robots, so researchers are exploring the fundamental mechanism. They describe their numerical study in Physics of Fluids; among their discoveries, they found that thrust production and efficiency are underestimated within laminar, or nonturbulent, flows. (2020-11-03)

New cause of COVID-19 blood clots identified
A new study reveals that COVID-19 triggers production of antibodies circulating through the blood, causing clots in people hospitalized with the disease. (2020-11-02)

Melding biology and physical sciences yields deeper understanding of cancer
An evolving understanding of cancer that incorporates the physical properties of tumors and their surrounding tissues into existing biologic and genetic models can direct cancer researchers down previously uncharted avenues, potentially leading to new drugs and new treatment strategies, say investigators from Massachusetts General Hospital, Harvard Medical School (HMS) and the Ludwig Center at HMS. (2020-10-30)

New ancient genomes reveal a complex common history of dogs and humans
Newly sequenced whole genomes of ancient dogs reveal a complicated genetic legacy that reflects a long, shared history with humans spanning more than 11,000 years into the past. (2020-10-29)

Specific and rapid expansion of blood vessels
Upon a heart infarct or stroke, rapid restoration of blood flow, and oxygen delivery to the hypo perfused regions is of eminent importance to prevent further damage to heart or brain. Arterial diameter is a critical determinant of blood flow conductance. Scientists of the Karlsruhe Institute of Technology (KIT) have now discovered a novel mechanism to structurally increase arterial diameter by selectively increasing the size of arterial endothelial cells, thereby allowing rapid increases in flow. (2020-10-28)

Age and pre-existing conditions increase risk of stroke among COVID-19 patients
Fourteen out of every 1,000 COVID-19 patients admitted to hospital experience a stroke, a rate that is even higher in older patients and those with severe infection and pre-existing vascular conditions, according to a report published this week. (2020-10-28)

Coastal Greenland reshaped as Greenland ice sheet mass loss accelerates
Ice loss from the Greenland Ice Sheet has accelerated significantly over the past two decades, transforming the shape of the ice sheet edge and therefore coastal Greenland. (2020-10-27)

Ketamine, a painkiller used by the army, does not impair tolerance to blood loss
A low dose of ketamine, administered intravenously, does not alter a healthy human's tolerance to blood loss. In other words, if someone was given ketamine to kill pain associated with a battlefield injury, they would be able to tolerate blood loss just as well as someone who did not received this pain killer. (2020-10-21)

Researchers use gold nanorod scattering to identify immune system's 'killer and savior'
Researchers have utilized the scattering of gold nanorods to identify M1 and M2 macrophages. Further development of this technique will lead to a new point of care or a biopsy tool which can predict the stages of manifestation of diseases like cancer, atherosclerosis, and fibrosis just from the simple tissue fluids or blood samples. (2020-10-20)

New evidence to guide the practice of blood transfusions in children with severe malari
Blood transfusions increase the survival of children admitted to the hospital with complications by severe malaria, and could be beneficial even at higher haemoglobin levels than those currently recommended. These are the main findings of a study led by ISGlobal, a centre supported by ''la Caixa'' Foundation, and published in The Lancet Haematology. (2020-10-19)

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