Summary
The maintenance of a constant intracellular ionic environment is vital for cell viability and its proper function. To this end, cells possess an elaborate set of membrane proteins that transport ions across the plasma membrane. Intracellular ionic composition is determined by the activity of these transporters and by the extracellular ionic environment. The matrix in which chondrocytes are embedded is highly unusual when compared with the surroundings of other mammalian cells. In addition, the physical environment of the chondrocytes is routinely altered by load. By altering ionic gradients and transporter activity, load-induced changes to the matrix have knock-on effects on intracellular composition. This has important consequences for intracellular reactions such as macromolecule synthesis and hence matrix integrity. The carrier proteins present in chondrocytes to regulate cell composition therefore have a vital role to play in maintaining matrix integrity. We consider the specific challenges presented by the physical environment of chondrocytes and the ways in which these cells respond to them.
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© 1999 Springer-Verlag Tokyo
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Urban, J.P.G., Wilkins, R.J. (1999). Extracellular Ions and Hydrostatic Pressure: Their Influence on Chondrocyte Intracellular Ionic Composition. In: Tanaka, S., Hamanishi, C. (eds) Advances in Osteoarthritis. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68497-8_1
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DOI: https://doi.org/10.1007/978-4-431-68497-8_1
Publisher Name: Springer, Tokyo
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