Vislie T. Cell volume regulation in fish heart ventricles with special reference to taurine.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1983;
76:507-14. [PMID:
6139224 DOI:
10.1016/0300-9629(83)90453-x]
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Abstract
A review of the cell volume regulation mechanism in heart ventricles of teleosts reveal that the mechanism is not only restricted to euryhaline species in a changing salinity regime but also is manifested in fresh-water fish. Taurine is the dominating amino acid and the main cellular osmo-effector in teleost hearts (accounting for 40-50% of the osmolality change). During hypo-osmotic regulation, cellular taurine is reduced by an efflux from the cells, whereas intracellular synthesis of taurine most probably accompanies hyper-osmotic regulation. Vertebrate hearts seem to have a high concentration of taurine and it may in general in vertebrate hearts also play a pivotal role in cellular osmoregulatory function.
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