brush border

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border

 [bor´der]
a bounding line, edge, or surface.
brush border a specialization of the free surface of a cell, consisting of minute cylindrical processes (microvilli) that greatly increase the surface area.
Brush border, characterized by closely packed microvilli. From Dorland's, 2000.
vermilion border the exposed red portion of the upper and lower lips.

brush bor·der

the apical epithelial surface bearing closely packed microvilli about 2 mcm long, such as occur on the cells of the proximal tubule of the nephron.
Synonym(s): limbus penicillatus
A specialized portion of the free or apical aspect of certain epithelial cells—e.g., of the GI tract—consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx—which is rich in hydrolytic enzymes

brush border

Physiology A specialized portion of the free or apical aspect of certain epithelial cells–eg, of the GI tract, consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx–which is rich in hydrolytic enzymes

brush bor·der

(brŭsh bōr'dĕr)
An epithelial surface bearing closely packed microvilli about 2 mcm long, such as occurs in the proximal tubule of the nephron.

brush border

see MICROVILLUS.
References in periodicals archive ?
It is important to note that brush border enzymes are an integral part of mature villous enterocytes and are quantitatively associated with their differentiation [66].
Organoid technology has a substantial potential for disease modelling [82] and therefore elucidating the sequence of pathogenic events in CD in which brush border enzymes may be utilised.
A self-renewing population of epithelial cells express brush border enzymes that might be employed in the in vitro studies of CD when there is reconstitution of other immune cells into the model.
Lactose which is digested by the brush border enzyme lactase is one of the poorly absorbed short-chain carbohydrates, often referred as FODMAPs (fermentable, oligo-, di-, monosaccharides and polyols).
The measurement of brush border enzyme activities offers an additional objective tool to evaluate the severity of the histological abnormalities in untreated coeliac patients [11].