pillar cell


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pillar cell

One of two groups of cells (inner and outer) resting on the basement membrane of the organ of Corti in which elongated bodies (pillars) develop. These enclose the inner tunnel (Corti's tunnel).
See also: pillar
References in periodicals archive ?
These alterations can be related to rupture of pillar cells, which induces loss of vascular integrity and enhance blood flow inside the lamella (Barja-Fernandez et al.).
Observe pillar cells (CP) detached and pavement cells partially detached.
Owen et al., "Regulation of p27Kipl by Sox2 maintains quiescence of inner pillar cells in the murine auditory sensory epithelium," Journal of Neuroscience, vol.
The nucleus occupies the basal region of the pillar cell perikaryon [ILLUSTRATION FOR FIGURE 2 OMITTED], which is coupled to the adjacent cells of the intralamellar septum by regions of thick, basolateral junctions [ILLUSTRATION FOR FIGURE 12 OMITTED].
The regions of contact between adjacent pillar cell flanges constitute highly structured junctional complexes [ILLUSTRATION FOR FIGURES 7 AND 11 OMITTED].
With the reduction in thickness of the pillar cell flanges, and to a lesser extent of the intralamellar septal cells, there is a corresponding, marked increase in the volume of the hemolymph lacunae ([ILLUSTRATION FOR FIGURE 3 OMITTED], cf [ILLUSTRATION FOR FIGURE 2 OMITTED]).
vannamei (Taylor and Taylor, 1992, [ILLUSTRATION FOR FIGURE 25A OMITTED]), and in the palaemonid Palaemonetes pugio (Doughtie and Rao, 1978), the pillar cell perikarya appear to constitute part of the intralamellar septum.
In FW-acclimated shrimps, the gill epithelium appears to be a tight epithelium, well protected from paracellular water and ion movements by extensive and characteristic junctions - constituted by a small desmosome and a lengthy septate junction - between adjacent pillar cell flanges.
The alterations occurring at the apical pillar cell interface, and other changes in the characteristics of the intralamellar septal cells, including the reduction in [Na.sup.+]/[K.sup.+]-ATPase activity, thus appear to reflect the structural transformations underlying the molecular mechanisms of long-term adaptation to hyperionic media in freshwater palaemonids, particularly those that restrict the uptake of [Na.sup.+].
Such salt-transporting gills exhibit a typical microanatomy: the highly flattened, cuticle-bounded gill lamellae essentially consist of a continuous layer of epithelial cells enclosing a narrow hemolymph space; linked pairs of sustaining pillar cells extend across this space between the opposing epithelial sheets, their apical flanges often forming part of the epithelium (Mantel and Farmer, 1983; Taylor and Taylor, 1986; Maina, 1990).
The epithelial lining of gill filaments (PE) comprises abundant mucous cell (MC) as well as chloride cells (CC) while the secondary lamellar epithelium comprise pavement cell (PC), pillar cells (PI), blood capillaries (B) as well as few mucous cells (MC).