Potassium Current Events

Potassium Current Events, Potassium News Articles.
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Link to our ancient past is confirmed in potassium channel research
Research on components of the brain's electrical signaling system has answered a basic question about our human evolution, confirming scientific belief that we two-legged, computer-using creatures are descended from prokaryotes -- cellular organisms so primitive and simple that they exist without nuclei or cell walls. The study, led by Zhe Lu, MD, PhD, an Associate Professor in the Department of Physiology at the University of Pennsylvania School of Medicine have been recently published in the journal Nature. (2001-11-07)

Making plants better lovers: Scientists find gene responsible for reproductive success in plants
The birds do it, the bees do it, and now researchers have discovered how plants can do it better. Published in Genes & Development, researchers have discovered that the presence of a potassium ion channel in pollen increases reproductive success. Dr. Sentenac and colleagues conclude that the SPIK potassium ion channel increases pollen competitive ability by facilitating the rapid elongation of the pollen tube, and therefore helps to ensure the reproductive success of pollen grain. (2002-01-31)

Potassium Linked To Lowered Blood Pressure
Potassium, either in the form of fruits and vegetables, or in supplements can lower high blood pressure, a risk factor for heart attack or stroke, Harvard researchers report in Hypertension: Journal of the American Heart Association. (1998-01-16)

Investigational drug reduces high potassium levels in chronic kidney disease patients
Research published today found that the investigational drug patiromer decreased high potassium levels and maintained normal potassium levels in patients with chronic kidney disease. The results of a multicenter trial appear in the New England Journal of Medicine. (2014-11-21)

Scientists develop new method for studying early life in ancient rocks
Scientists have developed a new method for detecting traces of primordial life in ancient rock formations using potassium. (2019-07-08)

Alfalfa and potassium: It's complicated
Expect a tradeoff between alfalfa yield and quality when fertilizing with potassium. (2019-10-16)

New operating principle of potassium channels discovered
Neurons transmit information with the help of special channels that allow the passage of potassium ions. Defective potassium channels play a role in epilepsy and depression. The scientists working with Professor Henning Stahlberg at the Biozentrum of the University of Basel have now identified the complete 3D structure of a particular potassium channel, a HCN channel. This enabled them to draw conclusions about its mechanism of action, which they describe in the current issue of Nature Communications. (2014-01-28)

Potassium loss from blood pressure drugs may explain higher risk of adult diabetes
Johns Hopkins researchers have discovered that a drop in blood potassium levels caused by diuretics commonly prescribed for high blood pressure could be the reason why people on those drugs are at risk for developing type 2 diabetes. The drugs helpfully accelerate loss of fluids, but also deplete important chemicals, including potassium, so that those who take them are generally advised to eat bananas and other potassium-rich foods to counteract the effect. (2008-11-24)

International research collaboration reveals the mechanism of the sodium-potassium pump
Researchers from Aarhus University have collaborated with a Japanese group of researchers to establish the structure of a crucial enzyme -- the so-called sodium-potassium pump -- which forms part of every cell in the human body. The result, which was recently published in Nature, may pave the way for a better understanding of neurological diseases. (2013-10-04)

Potassium levels possible key to racial disparity in Type 2 diabetes
Lower potassium levels in the blood may help explain why African-Americans are twice as likely to be diagnosed with Type 2 diabetes as whites, according to a new study by Johns Hopkins researchers. (2011-03-02)

Gates open on understanding potassium channel controls
Walter and Eliza Hall Institute scientists have made a significant advance in understanding how potassium channels, which permit the flow of electric currents central to many of the body's biological processes, control the flow of these currents. (2010-06-03)

Intrathecal bumetanide has analgesic effects through inhibition of NKCC1
Accumulating evidence has demonstrated that the sodium-potassium-chloride co-transporter 1 and potassium-chloride co-transporter 2 have a role in the modulation of pain transmission at the spinal level through chloride regulation in the pain pathway and by effecting neuronal excitability and pain sensitization. (2014-07-16)

Potassium-rich foods cut stroke, death risks among older women
Older women who eat foods with higher amounts of potassium may be at lower risk of stroke and death than women who consume less potassium-rich foods. The health benefits from potassium-rich foods are greater among older women who do not have high blood pressure. Most older American women do not eat the recommended amounts of potassium from foods. (2014-09-04)

Cardiac surgery patients at higher risk
Patients undergoing cardiac surgery are twice as likely to experience certain complications when their pre-surgical potassium levels are low. (1999-06-15)

Mathematics reveals inner workings of potassium pipeline
HHMI investigators and their colleagues perform complex mathematical analyses that show how potassium channels accomplish the difficult task of permitting potassium to travel across the cell membrane. (1999-07-02)

New class of molecules may help prevent fatal complication in patients with kidney disease
Researchers at the University of Maryland School of Medicine have made an important discovery about why potassium builds up to dangerous levels in the bloodstream, a relatively common medical problem that affects about eight percent of hospitalized patients. They have identified a new molecular pathway and a new class of molecules responsible for preventing potassium from being excreted normally through the kidney. Their study was just published in the Journal of Clinical Investigation. (2009-11-03)

Study offers new insights into the mechanics of muscle fatigue
A study in The Journal of General Physiology examines the consequences of muscle activity with surprising results, indicating that the extracellular accumulation of potassium that occurs in working muscles is considerably higher than previously thought. (2013-01-17)

Scientists a step closer to understanding how anaesthetics work in the brain
An important clue to how anaesthetics work on the human body has been provided by the discovery of a molecular feature common to both the human brain and the great pond snail nervous system, scientists say today. Researchers hope that the discovery of what makes a particular protein in the brain sensitive to anaesthetics could lead to the development of new anaesthetics with fewer side effects. (2007-07-19)

Scientists Find New Trigger For Nerve Cell Death
A paper in today's Science challenges a well-established idea about why nerve cells self-destruct when the brain or spinal cord is injured or becomes diseased. It suggests that when potassium jumps ship, neurons commit suicide. The finding points to a new strategy for protecting the brain or spinal cord after injury or disease. (1997-10-03)

Gene discovery reveals a critical protein's function in hearing
Discovery of a deafness-causing gene defect in mice has helped identify a new protein that protects sensory cells in the ear, according to a study led by University of Iowa researchers. The mutated gene fails to produce normal claudin-9 protein, which, the UI team showed, is needed to maintain the proper distribution of potassium in the inner ear. (2009-08-21)

New data show that white potatoes increase intake of potassium
The consumption of white potatoes is linked to an increased intake of potassium, according to a new study by the Alliance for Potato Research and Education released today at Experimental Biology 2013. (2013-04-23)

Research team reverse way potassium channels work from bacteria to human
Research develops a better understanding of and exerts an unparalleled control of protein molecules. (2018-06-20)

There are no water molecules between the ions in the selectivity filter of potassium
Do only potassium ions pass through the selectivity filter of a potassium channel, or are there water molecules between the ions? This question has been a source of controversy for years. Researchers led by Prof. Adam Lange from the Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) in Berlin have now been able to show that water molecules do not co-migrate through the potassium channel. (2019-08-09)

Bacterial physiology: Two sensors for the price of one
Uptake of potassium by bacteria is regulated by a single protein that senses the concentration of this cation both inside the cell and in the external medium, and controls the expression of the corresponding transport protein accordingly. (2016-06-17)

Decoupled graphene thanks to potassium bromide
The use of potassium bromide in the production of graphene on a copper surface can lead to better results. When potassium bromide molecules arrange themselves between graphene and copper, it results in electronic decoupling. This alters the electrical properties of the graphene produced, bringing them closer to pure graphene, as reported by physicists from the universities of Basel, Modena and Munich in the journal ACS Nano. (2019-04-29)

Pushing the cold frontier in an orderly fashion
Working toward ever lower temperatures is only part of the battle for physicists studying ultra-cold systems of atoms. A group of researchers has now found a way to deal with disorder as well, as they pump entropy away from an atomic gas. (2009-09-28)

UAB research warns of risks of low potassium in heart failure patients with chronic kidney disease
New research from the University of Alabama at Birmingham (UAB) says low potassium levels produce an increased risk of death or hospitalization in patients with heart failure and chronic kidney disease (CKD). In findings reported in January in Circulation: Heart Failure, a journal of the American Heart Association, the researchers say that even a mild decrease in serum potassium level increased the risk of death in this patient group. (2010-02-08)

High Potassium Diet May Protect Against Stroke
Diets rich in fruits, vegetables and whole grain cereals may reduce the risk of stroke, especially in those individuals with high blood pressure. In a study, individuals in the top fifth of dietary potassium intake had a 38 percent lower risk of stroke than those in the bottom fifth. (1998-09-21)

Researchers reach 'paradigm shift' in understanding potassium channels
A new discovery relating to one of the most common processes in human cells is being described as a 'paradigm shift' in understanding. Researchers at the University of Dundee, the Max Planck Institute for Biophysical Chemistry, the University of Göttingen and the University of Oxford have observed ion permeation in potassium channels which does not follow previously predicted pathways. They have published the results of their research in the journal Science. (2014-10-16)

Potassium is critical to circadian rhythms in human red blood cells
An innovative new study from the University of Surrey and Cambridge's MRC Laboratory of Molecular Biology, published in the prestigious journal Nature Communications, has uncovered the secrets of the circadian rhythms in red blood cells and identified potassium as the key to unravelling the mystery. (2017-12-12)

BUSM researchers encourage use of potassium iodide
Researchers from Boston University School of Medicine are strongly encouraging prenatal vitamin manufacturers to use only potassium iodide and not other sources of iodine in their products. According to the researchers, potassium iodide is the best way to ensure that prenatal vitamins given to expectant mothers receive 150ug of supplemental daily iodine as recommended by the American Thyroid Association. The researchers' recommendation appears as a research letter in the Feb. 26 issue of the New England Journal of Medicine. (2009-02-25)

Will a banana a day keep a stroke away?
People with a low amount of potassium in their diet may have an increased risk of stroke, according to a study published in the August 13 issue of Neurology, the scientific journal of the American Academy of Neurology. (2002-08-12)

Potassium limitation, ammonium toxicity and amino acid excretion in yeast
An amino acid excretion mechanism is identified in yeast. This stress response helps purge excess nitrogen when ammonium ion toxicity is encountered, presumed to leak through potassium channels, in potassium-limiting conditions. (2006-10-16)

Low potassium linked to high blood pressure
As a risk factor for high blood pressure, low levels of potassium in the diet may be as important as high levels of sodium -- especially among African-Americans, according to research being presented at the American Society of Nephrology's 41st Annual Meeting and Scientific Exposition in Philadelphia, Pa. (2008-11-08)

New insight into a central biological dogma on ion transport
New research results from Aarhus University and New York University show how active transport of potassium can be achieved by a membrane protein complex that has roots in both ion pump and ion channel super-families. The results, which have just been published in Nature, shed new light on what define channels and pumps. (2017-06-22)

Safe potassium-ion batteries
Australian scientists have developed a nonflammable electrolyte for potassium and potassium-ion batteries, for applications in next-generation energy-storage systems beyond lithium technology. In the journal Angewandte Chemie, scientists write that the novel electrolyte based on an organic phosphate makes the batteries safer and also allows for operation at reduced concentrations, which is a necessary condition for large-scale applications. (2020-01-31)

Fresh meats often contain additives harmful to kidney disease patients
Uncooked meat products enhanced with food additives may contain high levels of phosphorous and potassium that are not discernable from inspection of food labels, according to a study appearing in an upcoming issue of the Clinical Journal of the American Society Nephrology. This can make it difficult for people to limit dietary phosphorous and potassium that at high levels are harmful to kidney disease patients. (2009-07-23)

Potassium current density increased sharply after 2 weeks of NSCs neural differentiation
Potassium current density increased sharply after 2 weeks of NSCs neural differentiation. (2013-12-02)

Potassium supplements may increase survival in patients taking diuretics for heart failure
Researchers from the Perelman School of Medicine at the University of Pennsylvania found that patients taking prescription potassium supplements together with loop diuretics for heart failure have better survival rates than patients taking diuretics without the potassium. Moreover, the degree of benefit increases with higher diuretic doses. (2014-07-16)

Potassium additives may make low-sodium meats unsafe for patients with kidney disease
Potassium additives are frequently added to sodium-reduced meat products in amounts that may be dangerous for patients with kidney disease. (2014-11-15)

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