countertransport

countertransport

 [kown″ter-trans´port]
the simultaneous transport of two substances across a membrane in opposite directions, either by the same carrier or by different carriers that are biochemically linked to each other. See also cotransport.

count·er·trans·port

(kown'ter-tranz'pōrt),
The transport of one substance across a membrane, coupled with the simultaneous transport of another substance across the same membrane in the opposite direction.

countertransport

/coun·ter·trans·port/ (-trans´port) the simultaneous transport of two substances across a membrane in opposite directions, either by the same carrier or by two carriers that are biochemically linked to each other.

countertransport

[-trans′pôrt]
Etymology: L, contra + trans, across, portare, carry
the simultaneous transport of two different substances across the same membrane, each in the opposite direction.

count·er·trans·port

(kown'tĕr-trans'pōrt)
The transport of one substance across a membrane, coupled with the simultaneous transport of another substance across the same membrane in the opposite direction.
References in periodicals archive ?
PAH/alpha-KG countertransport stimulates PAH uptake and net secretion in isolated rabbit renal tubules.
Insulin resistance is associated with high sodium-lithium countertransport in essential hypertension.
down this concentration gradient into the cell may be as a sodium ion alone, in cotransport with other organic substances such as amino acids and glucose or ions such as chloride, or in a countertransport mechanism with ions such as hydrogen.
The luminal entry of sodium requires various carriers that transport sodium coupled or in countertransport with other solutes across the luminal membrane.
also crosses the luminal membrane in countertransport with hydrogen ion ([H.
countertransport across the red cell membrane has been suggested as such an early marker [1-4], although this was not uniformly confirmed [5-7].
countertransport in insulin-dependent diabetes mellitus patients with nephropathy [14].
Erythrocyte sodium-lithium countertransport activity as a marker of predisposition to hypertension and diabetic nephropathy in NIDDM.
Changes in erythrocyte sodium-lithium countertransport kinetics in diabetic nephropathy.
Increased sodium-lithium countertransport activity in red cells of patients with insulin-dependent diabetes and nephropathy.