Brush Border

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brush border

[′brəsh ‚bȯr·dər]
(cell and molecular biology)
A superficial protoplasic modification in the form of filiform processes or microvilli; present on certain absorptive cells in the intestinal epithelium and the proximal convolutions of nephrons.

Brush Border


the aggregate of rod-shaped structures on the surface of certain cells in animals and humans. The brush border consists of separate cytoplasmic processes arranged like a brush along the free margin of the cells of the excretory ducts of the salivary glands, the convoluted uriniferous tubules of the kidney, and certain other epithelial cells. By substantially increasing the cell surface, the brush border promotes more intensive absorption and excretion of matter.

References in periodicals archive ?
Theologically the shedding of RBBME from brush border of microvillous membrane would be an early sign of renal function defect.
In the present study, tubular necrosis, infiltration of lymphocytes in the interstitial spaces with loss of brush border was observed in most kidney sections.
Effect of hydrogen ion-gradient on carrier-mediated transport of glycylglycine across brush border membrane vesicles from rabbit small intestine.
Ser170 of Bacillus thuringiensis Cry1Ab [delta]-endotoxin becomes anchored in a hydrophobic moiety upon insertion of this protein into Manduca sexta brush border membranes.
The body loses part of this combined amount, and the remainder is ultimately transferred to the blood via the brush border site.
The first steps of the endocytotic process, which occurred in principal cells of the vas deferens were, marked by presence of caveolae formed among the microvillus of the apical brush border.
TEM and SEM were used to look for the possible presence of bacteria bound to the brush border of the epithelial cells and in the ectoperitrophic space (between PTM and MGT epithelium).
Almost all parts of the digestive tract show positive AP activities restricted at the brush border of the epithelial cells or in the lumen.
It is sequestered in the wall of the small intestine and sits on the brush border membrane surfaces of the enterocytes.