Sentences with phrase «potassium channels open»

After being activated by an external signal, potassium channels open to allow ions through.

Not exact matches

Bound to the cell membrane, Na ± K+ATP ase uses the energy of adenosine triphosphate (ATP) molecules to pump sodium out of the cell and potassium into the cell, maintaining a charge gradient that allows ions to flow through open channels.

Administering the epilepsy drug retigabine opened the potassium channels and counteracted much of the toxin's effects, raising hopes of a treatment for these bites.

A mutant potassium channel stuck in the open position still conducts K + but not Na +, indicating that its conformation and the presence of K + in the pore confer selectivity.

The porelike protein forms a potassium channel, an electrical entryway into the cell that toggles open or shut depending on the outside voltage.

Q1s create the pore that the potassium flows through and the E1s control how slowly that pore opens and closes, how many channels are on the cell surface of each cell and how they are regulated by drugs.

Then you open the potassium channels, and let the chemo, the conventional troops, come in...»

«We've discovered that calcium - dependent potassium channels are the gateways to brain tumor capillaries and to the tumor itself, and we've found agents that will keep those channels open much longer than RMP - 7,» Black says.

It appears that each of the four open inactivation gates in a Shaker potassium channel is independent, but only one of the four gates closes in a mutually exclusive manner.

They found that when the potassium channel is open, water molecules quickly bind to tiny cavities within the protein structure, where they block the channel in a state that prevents the passage of ions.

In long QT syndrome, potassium channels (orange and blue) that open too slowly can lead to irregular heart rhythms.

They observed that this molecule opens existing potassium channels widely and considerably increases their activity, making it equivalent to that of the controls.

Interestingly, it has been suggested that the initial signal responsible for triggering the development of hypoxic preconditioning in the brain involves the opening of ATP - sensitive potassium channels via the activation of adenosine A1 receptors [69].

Previous studies have found that drugs that open the potassium channels — which allow potassium to exit the cells in the blood vessels — might improve blood flow.

Minoxidil, which also promotes hair growth when used on the scalp, can relax the smooth muscle cells in blood vessels by opening certain potassium channels.

In these cells, glucose metabolism inhibits the ATP - dependent potassium channel (KATP channel) and opens voltage - dependent calcium channels (VDCCs), resulting in the exocytosis of insulin - containing granules [41].

This leads to opening of the potassium channel, and that's been suggested to be important in regulating appetite.

In addition, arginine can stimulate hair growth by opening up the potassium channels of cells — which stimulates hair growth.