osmotic gradient


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osmotic gradient

[äz′mäd·ik ′grād·ē·ənt]
(physical chemistry)
References in periodicals archive ?
These sugars become trapped inside the neurons, generating an osmotic gradient that causes intracellular oedema.
peruviana, however, an osmotic gradient sufficient to increase egg capsule weight by 30% was sufficient to open most egg capsules that contained advanced offspring; such osmotic gradients did not cause capsules containing earlier development stages to open.
Other methods to improve corneal penetration are chemical disruption using BAK or tetracaine, use of hypotonic riboflavin without dextran, and slight increase in hypotonic riboflavin concentration from 0.1% to 0.5% to utilize increased osmotic gradient.17 we used hypotonic riboflavin 0.25%, with HPMC and BAK to utilize both osmotic gradient and chemical disruption technique for better corneal penetration.
This tendency of the two connected liquids to achieve the same level of saltiness is a natural force called an osmotic gradient. This force makes most things happen in physiological systems.
Globulin correction of the albumin gradient: Correlation with measured serum to ascites colloid osmotic gradient. Hepatology 1992; 16: 396.
This was may be due to the decreased osmotic gradient. All the results suggested osmotic pumping as a primary mechanism of drug release from AMC.
To simulate this effect, the component of the 2nd Piola-Kirchhoff stress tensor related to the material compressibility was modified introducing the osmotic gradient pressure.
Among these agents, aquaporins are a family of hydrophobic and small integral membrane proteins that act as water selective pores, facilitating water transport along a favorable osmotic gradient (5).
With the reverse urea effect, high plasma urea levels are rapidly removed from blood during hemodialysis, creating an osmotic gradient between the brain and plasma.
In the vast majority of cases, hyponatremia reflects an excess of water relative to sodium stores, which leads to dilution of the total body sodium (1).Decreases in serum sodium concentrations create an osmotic gradient between the extra-and intercellular fluid in cerebral cells that causes water to move into cells, which increases the intracellular volume, promotes tissue edema, and causes neurologic symptoms (1).
With hydration, serum osmolality decrases which results in an osmotic gradient leads to water move from the intravascular to the intracellular space, decreasing intravascular volume.