Tag: "potassium" at biology news

Researchers find chemosignal that encourages women's sexual desire

...bstances, and the other group exposed to pads with potassium phosphate, a substance that mimics the concentration of the sweat and breast milk. "Because preconceived ideas about pheromones could potentially influence their responses, study participants were blind to the hypotheses and the source of the c...

'Blind' cells see the light; maybe someday humans will, too

... Spanning the membranes of nerve cells, sodium and potassium channels, in particular, facilitate the transmissi...ls on and off. They decided to concentrate on the potassium channel, which opens when a voltage difference develops between the inside and outside of a nerve ce...

University of Texas at Austin researchers identify drug-tolerance mechanism in flies

...hannel, on the surface of nerve cells that permits potassium to enter the cells in a way that modifies electrical signaling. The researchers think that when a drug causes nerve cells to fire too rapidly, slo levels are decreased to produce fewer portals and dampen the drug's effect. Having the slo gene ins...

Spectroscopy for the real world

...ence of water, they placed salt grains composed of potassium bromide and potassium iodide in the high-pressure spectroscopy system's vacuum chamber and slowly increased the humidity. ...

Wetlands clean water and may control neighborhood flood problems

...rogen, organic carbon, phosphorus, aluminum, iron, potassium and manganese. In all, 83 chemicals were monitored, but only 17 were present in measurable amounts. Four water quality monitors located along the wetland system checked for chemical levels. The first monitor was at the golf course's east end where su...

JCI table of contents April 1, 2005

...They show that HNF-4alpha regulates a subunit of a potassium channel that is involved in glucose-stimulated insulin secretion. These data provide a molecular explanation for the defect in insulin secretion from the pancreas caused by HNF-4alpha mutations in MODY. TITLE: The MODY1 gene HNF-4alpha regulates s...

Discovery may lead to better Candidiasis drug

...fic membrane protein called TRK1p, which regulates potassium ion flow through the cell membrane of the pathogen...e channel open allows a lethal unregulated flow of potassium and other essential molecules into, and out of, the cell. "This is the first identification of a...

In anoxia, why can't humans be more like western painted turtles?

...ences in San Diego, March 31 - April 5, 2005. New potassium channel blockage short-circuits turtle's shutoff m... idea to investigate a relatively newly discovered potassium channel (mitochondrial KATP channel) as a possible regulator of NMDA receptor activity during anoxia...

New study documents the detrimental impact of teen beverage choices

..., phosphorus, magnesium and potassium. Calcium and potassium are chronically low in a teenager's diet and both were highlighted as "problem nutrients" in the recently released Dietary Guidelines for Americans. The new study also found that milk is among the top four food sources of protein, vitamin A and zinc ...

14 highlighted physiology papers from IUPS 2005: From 'genomics to functions'

...y of Toronto scientists studied a newly discovered potassium channel (mitochondrial KATP channel) as a possible regulator of NMDA receptor activity. When the channel was inhibited, the protective decrease in calcium influx in the anoxic turtle brain didn't occur, opening a new research direction in this area. ...

JCI table of contents May 1, 2005

...ts have elevated blood pressure and high levels of potassium in their blood. In a study appearing online on April 7 in advance of the print publication of the May 1 issue of the Journal of Clinical Investigation, David Ellis and colleagues from Oregon Health and Science University provide an elegant dissection...

Protein tags regulate key ion channel

...s: How do cells control the background movement of potassium ions across the cell membrane? This process is important because the flow of potassium ions determines whether "excitable" cells in the brain, heart and skeletal muscles "fire," sending o...

Fat may affect electrical impulses in brain, heart

...lectrically responsive cell pores--voltage-sensing potassium channels--can bind to molecules of palmitate. Palm...In effect, the attachment of palmitate makes these potassium channels, called Kv1.1 channels, open more easily, and this can influence the transmission of electr...

Scientists propose new method for studying ion channel kinetics

...n Pearson added, "Ions such as calcium, sodium and potassium play a fundamental role in nearly all biological processes. Calcium, for example, is important in fertilization, cell death, cell division, human hearing, memory, vision, and the immune system. It also plays a factor in cancer, Alzheimer's, alcohol c...

Nuclear imaging of iodine uptake in mouse tissues

...ve times higher than the FDA-recommended dosage of potassium iodide in the event of a nuclear accident is neede...ed to test what would happen if they gave the mice potassium iodide, the FDA-recommended drug for blocking radioactive iodine absorption by the thyroid in the ev...

JLab, College of W&M researchers study radiation blockers

...ve times higher than the FDA-recommended dosage of potassium iodide in the event of a nuclear accident is neede...ed to test what would happen if they gave the mice potassium iodide, the FDA-recommended drug for blocking radioactive iodine absorption by the thyroid in the ev...

Wisconsin researchers identify sleep gene

... produces an ion channel that controls the flow of potassium into cells, a process that critically affects, amo... neurons. A handful of recent studies suggest that potassium channels are also involved in the generation of sleep in humans. Reported in the April 28 issue of N...

Chemical that triggers hibernation may protect muscles

...naloxone (an opiate receptor antagonist), HWP plus potassium channel blocker, and various control groups. After... subsequent protection of muscle is the opening of potassium channels, which in heart muscle is associated with the accumulation of opioids. The researchers atte...

Saturated fats combined with genetic trait implicated in development of type 2 diabetes

...s are much more effective activators of a specific potassium channel found in the pancreas--known when activate... effect, they say, is amplified in the polymorphic potassium channel. Interestingly, it seems that polyunsaturated fats are poor activators of the potassium chan...

Enzyme affects hypertension by controlling salt levels in body

...ertension linked to salt intake often need to take potassium supplements in order to keep their high blood pres...derstanding of hypertension that is induced by low potassium intake. Previous studies have shown that diuretics, a class of drugs commonly used to control hypert...

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(Date:8/29/2014)... and number of connections in transcription factor networks (TFNs) ... a study published in PLOS Computational Biology ... signature contributes to a network,s resilience against mutations. ... assortativity of TFN models has a greater effect on ... of assortativity," said Dov A. Pechenick, PhD, lead author ...
(Date:8/29/2014)... nucleus, chromosomal DNA is tightly bound to structural ... chromatin. Until about two decades ago, histones were ... material around which the glamorous DNA strands were ... appreciation for how DNA/histone interactions govern gene expression. ... studying the sequence of the genome from cancer ...
(Date:8/28/2014)... to announce the selection of Dr. Fred Baxendale as ... those who have served ESA for at least 20 ... Society that has reached an extraordinary level. Candidates for ... and then voted on by the ESA membership. Dr. ... Entomology 2014, ESA,s Annual Meeting in Portland, Oregon this ...
Breaking Biology News(10 mins):Assortativity signatures of transcription factor networks contribute to robustness 2'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 2'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 3Fred Baxendale selected as Honorary Member of the Entomological Society of America 2
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