Ciliary activity of cultured rabbit tracheal epithelium: beat pattern and metachrony
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چکیده
منابع مشابه
Ciliary activity of cultured rabbit tracheal epithelium: beat pattern and metachrony.
The beat pattern of rabbit tracheal cilia has been investigated using high-speed cine photography and scanning electron microscopy, on cultured epithelia of known orientation. The cilia normally rest in the position reached at the end of the effective stroke, the ciliary tips pointing towards the oropharynx. Each beat begins with a recovery (or preparative) stroke in which a bend is propagated ...
متن کاملEffect of increased pressure on tracheal ciliary beat frequency.
Effects of increased ambient pressure on mucociliary clearance have been poorly investigated. The effects of increasing pressures on ciliary beat frequency (CBF) of guinea-pig tracheal rings were studied in vitro. Increased pressures of 25 and 100 kPa induced a significant and equivalent enhancement of CBF from 30 min after the pressure increase. The increase in CBF observed after a pressure in...
متن کاملAn electrophysiologic study of rabbit ciliary epithelium.
Microelectrode recordings from cells in rabbit ciliary epithelium have been made in vitro. Ionophoresis of Lucifer Yellow dye from microelectrodes during measurements of potential confirmed that the recordings were intracellular. Dye passed from the impaled cells into adjacent cells in both the nonpigmented and pigmented layers of the epithelium. Electrical coupling between epithelial cells als...
متن کاملThe influence of angiotensin II on cytoplasmic sodium in cultured rabbit nonpigmented ciliary epithelium
Ang II receptors are localized in the ciliary epithelium of the eye. Because aqueous humor secretion is linked to the sodium-driven solute transport by ciliary epithelium, we examined whether Ang II causes a change of cytoplasmic sodium in cultured rabbit nonpigmented ciliary epithelium (NPE). Exposure of cultured NPE cells to Ang II in the concentration range 1 pM – 10 nM caused a dose-depende...
متن کاملThe influence of ascorbic acid on active sodium transport in cultured rabbit nonpigmented ciliary epithelium.
PURPOSE Cultured rabbit nonpigmented ciliary epithelium (NPE) transports ascorbic acid (ASC) inward through a sodium-dependent mechanism. This study was conducted to test whether Na-K transport is activated to export the additional sodium, which enters the cell in cotransport with ASC. METHODS Studies were conducted using a cell line derived from rabbit NPE. ASC uptake was measured using [14C...
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ژورنال
عنوان ژورنال: Journal of Cell Science
سال: 1981
ISSN: 1477-9137,0021-9533
DOI: 10.1242/jcs.47.1.331