Sentences with phrase «of calcium ion»

Additional experiments showed that genetic disruption of MrcA, depletion of ITPR3, and depletion of STIM1 all significantly inhibited extrusion in infected cells, as did chemical disruption of calcium ion signaling.

The nerve cell's activity was measured via concentration of calcium ion in the cell, and the team analyzed the changes in calcium concentration using a mathematical model.

«Most of the models that are available are not accurate enough to capture the important features of the calcium ion.»

The addition of very small quantities of calcium ions increases the viscosity considerably.

The speed with which the wave moves suggests that it travels through gap junctions and is made up either of calcium ions or some other small signaling molecule.

So, the researchers — headed by Professor of Physics and Biological Sciences Shane Hutson and Associate Professor of Cell and Developmental Biology Andrea Page - McCaw — targeted cells on the back of fruit fly pupae that expressed a protein that fluoresces in the presence of calcium ions.

For example, he's used it along with a calcium - tracking dye in cardiac muscle cells from a rat, to image the sparks and waves of calcium ions that can trigger deadly arrhythmias during heart failure.

«It is not yet known whether there's actually an increase or decrease in the flow of calcium ions through the channel,» Olesen says.

They measured the concentration of calcium ions in the nerve cells to visualize their activity when a moth was stimulated with an odor.

The differences between the averages of measured free amounts and the dosed amount of calcium ions give the averaged amount of bound calcium ions (Fig. 1B).

The red line reflects the amount of calcium ions added.

To maintain the solubility constant, which, however, slightly differs for the phases precipitated in different pH ranges, the solubility concentration of calcium ions is specifically lower at higher concentrations of carbonate (higher pH).

We also know how the enzyme changes shape when exposed to different environmental impacts, such as the concentration of calcium ions changes,» explains Thomas J.D. Jørgensen.

(B) Averaged amount of bound calcium ions as calculated from the difference between the measured amount of free calcium ions and the dosed amount of calcium ions shown in (A) for five pH levels.

(A) Development of the free calcium ions measured by the calcium ion selective electrode (black line) at pH = 9.25 in comparison with the dosed amount of calcium ions (red line).

The flow of calcium ions eases communication between neurons, promoting LTP along the reward pathway.

PKA phosphorylates IP3 receptors located on cell membranes, inducing them to release intracellular stores of calcium ions.

The emitted light energy correlates with the respective concentrations of calcium ions.

They used Arabidopsis thaliana (thale cress) plants that produce a special protein which breaks down after the binding of calcium ions and emits free energy in the form of light.

Such a mechanism could turn chemical ephemera — the ebbing and flowing of calcium ions and gentle currents of nitric oxide — into changes in gene expression and finally into alterations in the «wiring» of the nervous system.

They then decided to see what would happen if they supplied nitric oxide while simultaneously supplying chemicals that increase levels of calcium ions in cells.

Using near - infrared light, researchers have shown they can selectively activate an immune response by controlling the flow of calcium ions into the cell.

When the presynaptic neuron registers an influx of calcium ions, carrying the electrical surge of the action potential, vesicles that store neurotransmitters fuse to the cell's membrane and spill their contents outside the cell, where they bind to receptors on the postsynaptic neuron.

Professor Songtao Shi, principal investigator on the project, said the presence of hydrogen sulfide produced by the cells governs the flow of calcium ions.

These events are directed by specialized proteins called ion channels that allow the flow of calcium ions in and out of cells and among cell compartments.

Astrocytes also form their own long - distance communication networks by «talking» via waves of calcium ions, and, like neurons, they can receive and release neurotransmitters.

The researchers studied calcium channels in neurons, which allow for the transport of calcium ions from one nerve cell to another, helping the cells transmit itch signals from the skin to other cells in the spinal cord.

Neuronal activity is correlated with an influx of calcium ions, which can be tracked with fluorescent dyes or proteins that bind to calcium, as in these pyramidal cells.

In diseased kidneys, TRPC5 causes an influx of calcium ions into the podocyte, eventually destroying it.

These, such as verapamil, diltiazem, nifedipine, nitrendipine and nimodipine are not only widely used to treat hypertension, and hence might affect cognition by increasing cerebral blood flow, but also block the entry of calcium ions into neurons.

When these cells are illuminated by a strong light, a change in the structure of melanopsin triggers a molecular cascade that eventually leads to an influx of calcium ions into those neurons and an electrical pulse.

As they did, the level of calcium ions in the neuron rose sharply, suggesting that ion channels had opened and the neuron was becoming active.

«The combination of fast calcium pumping and small calcium release permits the midshipman to maintain the correct balance of calcium ions during its long - lasting mating call,» Rome says.

The transport of calcium ions to the site of the growing skeleton is one feature for characterizing the controlled process of coral calcification.

Calcium channels allow the passage of calcium ions in response to depolarization of the cell membrane.

The proposed mechanism of action via which magnets might improve recovery include increased blood flow, changes in the migration of calcium ions, alteration of pH balance, changes in hormone production, and an alteration of enzyme activity (20).

You've probably heard of an Epsom salts bath for decreasing muscle soreness, enhancing relaxation, and displacing many of the calcium ions that can accumulate in muscle tissue during workouts.

The propagation of the MAP leads to the release of calcium ions, which enables the muscle fiber to produce tensile force.

Within the cell, these calcium ions bind to activator proteins, which help release a flood of calcium ions from storage vesicles of the endoplasmic reticulum (ER) inside the cell.

Therefore, stretching does not reduce some of the mechanisms of muscle soreness, including damage to the ultrastructure of muscle, accumulation of calcium ions, cell inflammation, swelling and activation of pain receptors.

Not exact matches

Minerals: Coconut flour is a source of electrolytes because it is rich in ions such as manganese, calcium, selenium, phosphorus and potassium.

The researchers found that puffing activated a mechanosensitive channel protein called TRPV4, which is enriched in the membrane of neuronal axons and allows calcium ions to enter the cell.

In this method, each of the magnesium and calcium ions are exchanged for two sodium ions.

Human milk has lower levels of protein, calcium, sodium, potassium and other ions.

Ions such as calcium are important because they affect the release of neurotransmitters, the molecules that mediate communication between brain cells,» said Noebels.

A trio of electrons, the building blocks of classical computers, were entangled in a semiconductor in 2003, and the first quantum calculation was made with a single calcium ion in 2002.

When elevating calcium ion concentration directly at the presynaptic terminal with the use of caged calcium, cleavage of SNAP - 25 by botulinum toxin A (BoNT / A) produced a strong reduction in the calcium sensitivity for release, whereas cleavage of syntaxin using BoNT / C1 and synaptobrevin using tetanus toxin (TeNT) produced an all - or - nothing block without changing the kinetics of remaining vesicles.

A standard calcium model overestimates how strongly calcium binds, leading to clumps of ion pairs (left).

But the native language of biology is positive: its building blocks are protons and positively charged ions such as potassium, sodium and calcium.

This leads to a large increase in the amount of a special calcium ion channel in the nerve cells and overall, this significantly boosts the risk of epileptic seizures.