tubular proteinuria


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Related to tubular proteinuria: glomerular proteinuria

proteinuria

 [pro″te-nu´re-ah]
an excess of serum proteins in the urine, such as in renal disease, after strenuous exercise, or in dehydration.
accidental proteinuria (adventitious proteinuria) proteinuria due not to a kidney disease but to some other condition such as hemorrhage in the urinary tract; called also false proteinuria.
athletic proteinuria effort proteinuria.
dietetic proteinuria (digestive proteinuria) functional proteinuria produced by the eating of certain foods.
effort proteinuria functional proteinuria occurring as a result of vigorous and prolonged exercise of the lower limbs; called also athletic proteinuria.
false proteinuria adventitious proteinuria.
functional proteinuria any proteinuria that is not due to renal disease, such as the transient proteinuria of pregnancy, effort proteinuria, and orthostatic proteinuria.
glomerular proteinuria the most common kind of proteinuria, being due to glomerular disease and abnormal permeability of the glomerular capillaries to protein.
orthostatic proteinuria a form of functional proteinuria, usually seen between the ages of ten and twenty, that occurs on standing erect and disappears on lying down.
overflow proteinuria that due to hemoglobin, myoglobin, or immunoglobulin loss into the urine due to excessive amounts in the bloodstream, such as in multiple myeloma; it is not usually associated with glomerular or tubular disease.
tubular proteinuria proteinuria due to excretion of proteins of low molecular weight such as immunoglobulins, which normally should be reabsorbed.

tubular proteinuria

The loss of relatively small amino acids, immunoglobulin light chains, and other small proteins (less than 25 kD) in the urine, because of failure of the renal tubules to reabsorb proteins that have been filtered by the glomerulus.
See also: proteinuria

tubular

1. pertaining to renal tubules.
2. pertaining to fallopian tube.

tubular backleak
leakage of tubular fluid into the interstitium of the kidney is one of the factors in the pathogenesis of acute renal failure.
tubular maxima
the concentrations of solutes at which the renal tubules are working at full capacity and further increases in concentration will not increase the function. Called also Tm.
tubular necrosis
acute necrosis of the tubular epithelium caused usually by ischemia or exposure to a nephrotoxin; in most cases the patient succumbs to uremia in a few days. See also nephrosis.
tubular proteinuria
failure of the tubules to resorb small molecule proteins excreted by the glomerulus.
tubular reabsorption
reabsorption of solutes from the glomerular filtrate by the tubules, the conservation of protein, glucose and bicarbonate, and the conservation of the water that accompanies them.
tubular transport
refers to all processes which occur with renal tubular fluid during its transport from glomerular space to renal pelvis.
tubular transport maximum
when the tubular transport maximum for a renal tubular solute is exceeded the solute appears in the urine.
References in periodicals archive ?
In critically ill patients with AKI increased urinary tubular proteinuria can identify patients who required aRRT.
However it is obvious that the more serious nature of bone effects compared with a slight tubular proteinuria should be considered in the health risk assessment.
The capacity for both albumin and low-molecular-weight proteins to react precludes the strip from distinguishing between glomerular and tubular proteinuria.
Dose-response relations between urinary cadmium and tubular proteinuria in adult workers.
Cadmium-induced renal injury initially presents as tubular proteinuria that can be quantified through the measurement of the urinary excretion of low molecular weight proteins such as [[beta].
The aim of this study was to investigate the relationship between cadmium and lead in blood and bone mineral density (BMD) and tubular proteinuria.
The authors found no associations between lead and low bone mineral density or tubular proteinuria.
0 [micro]g urinary cadmium/g creatinine had a 3-fold increase in risk of having tubular proteinuria, as measured by [[alpha].
We therefore selected tubular proteinuria and enzymuria as logical markers in ATN.
Of all the diagnostically relevant urinary markers, only albumin and transferrin accept protons well, so the potential error of missing Bence Jones proteinuria remains when test strip screening strategies are used in proteinuria (21), although many cases presenting with Bence Jones or tubular proteinuria show microalbuminuria (23).
In pure tubular proteinuria, the small proteins, usually found in the glomerular filtrate (e.
There was one case of tubular proteinuria (540 mg protein /24 h) and six cases of physiological proteinuria (<150 mg protein/24 h).