Volume Regulation in Cells of Euryhaline Invertebrates

Variations in Salinity, Osmolarity, and Water Availability: Vertebrates and Invertebrates

“…Similarly, the concentration of the inorganic monovalent ions prevailing locally at the level of the macromolecular structures they may be affecting is still unknown. Data in the literature (193) are consistent with the idea that ionic effects result from direct disturbing effects on protein configuration rather than from some indirect effects such as an ion‐substrate association or electrostatic shielding. How monovalent ions affect the structure and the activity of macromolecules and what kind of structural modifications are induced are crucial questions which remain unanswered.…”

Variations in Salinity, Osmolarity, and Water Availability: Vertebrates and Invertebrates

“…Similarly, the concentration of the inorganic monovalent ions prevailing locally at the level of the macromolecular structures they may be affecting is still unknown. Data in the literature (193) are consistent with the idea that ionic effects result from direct disturbing effects on protein configuration rather than from some indirect effects such as an ion‐substrate association or electrostatic shielding. How monovalent ions affect the structure and the activity of macromolecules and what kind of structural modifications are induced are crucial questions which remain unanswered.…”

Comparative Aspects of Cell Osmoregulation and Volume Control

“…Amino acids accumulation within the me dulla of mammals undergoing long-term an tidiuresis was already reported some 30 years ago [Ullrich andJarausch, 1956: Robinson et al, 1966], Recent results confirmed and extended these early findings by showing that the amount of amino compounds decreases or increases in renal cortical and medullary slices following application of hypo-or hyper osmotic conditions Law and Turner, 1987], These results are reminis cent of the major role amino compounds play as intracellular osmotic effectors in aquatic euryhaline invertebrates [see Gilles, 1975Gilles, , 1978Gilles, , 1979Gilles, , 1983Gilles, , 1987aGilles and Pequeux, 1983 for reviews]. In this frame work, several recent studies indicate that some amino compounds as well as other organic molecules may be intracellular osmolytes playing a nonnegligible part in osmoreg ulation in mammalian kidney medulla cells [Balaban and Knepper, 1983;Beck et al, 1984Beck et al, , 1985Bagnascoet al, 1986Bagnascoet al, .…”

Digestive cells from Mytilus galloprovincialis show a partial regulatory volume decrease following acute hypotonic stress through mechanisms involving inorganic ions

“…On the contrary, the organic osmolytes were involved in long‐term acclimation (3 weeks). The use of organic osmolytes to cope with the stress of chronic exposure to dilute seawater has been already observed in other molluscs . This is probably because of large change in organic compound content occurs over a period of days in mollusc tissues .…”

Variations in Salinity, Osmolarity, and Water Availability: Vertebrates and Invertebrates

“…Similarly, the concentration of the inorganic monovalent ions prevailing locally at the level of the macromolecular structures they may be affecting is still unknown. Data in the literature (193) are consistent with the idea that ionic effects result from direct disturbing effects on protein configuration rather than from some indirect effects such as an ion‐substrate association or electrostatic shielding. How monovalent ions affect the structure and the activity of macromolecules and what kind of structural modifications are induced are crucial questions which remain unanswered.…”

Comparative Aspects of Cell Osmoregulation and Volume Control

“…Amino acids accumulation within the me dulla of mammals undergoing long-term an tidiuresis was already reported some 30 years ago [Ullrich andJarausch, 1956: Robinson et al, 1966], Recent results confirmed and extended these early findings by showing that the amount of amino compounds decreases or increases in renal cortical and medullary slices following application of hypo-or hyper osmotic conditions Law and Turner, 1987], These results are reminis cent of the major role amino compounds play as intracellular osmotic effectors in aquatic euryhaline invertebrates [see Gilles, 1975Gilles, , 1978Gilles, , 1979Gilles, , 1983Gilles, , 1987aGilles and Pequeux, 1983 for reviews]. In this frame work, several recent studies indicate that some amino compounds as well as other organic molecules may be intracellular osmolytes playing a nonnegligible part in osmoreg ulation in mammalian kidney medulla cells [Balaban and Knepper, 1983;Beck et al, 1984Beck et al, , 1985Bagnascoet al, 1986Bagnascoet al, .…”

Digestive cells from Mytilus galloprovincialis show a partial regulatory volume decrease following acute hypotonic stress through mechanisms involving inorganic ions

“…On the contrary, the organic osmolytes were involved in long‐term acclimation (3 weeks). The use of organic osmolytes to cope with the stress of chronic exposure to dilute seawater has been already observed in other molluscs . This is probably because of large change in organic compound content occurs over a period of days in mollusc tissues .…”

Variations in Salinity, Osmolarity, and Water Availability: Vertebrates and Invertebrates

“…Similarly, the concentration of the inorganic monovalent ions prevailing locally at the level of the macromolecular structures they may be affecting is still unknown. Data in the literature (193) are consistent with the idea that ionic effects result from direct disturbing effects on protein configuration rather than from some indirect effects such as an ion‐substrate association or electrostatic shielding. How monovalent ions affect the structure and the activity of macromolecules and what kind of structural modifications are induced are crucial questions which remain unanswered.…”

Comparative Aspects of Cell Osmoregulation and Volume Control

“…Amino acids accumulation within the me dulla of mammals undergoing long-term an tidiuresis was already reported some 30 years ago [Ullrich andJarausch, 1956: Robinson et al, 1966], Recent results confirmed and extended these early findings by showing that the amount of amino compounds decreases or increases in renal cortical and medullary slices following application of hypo-or hyper osmotic conditions Law and Turner, 1987], These results are reminis cent of the major role amino compounds play as intracellular osmotic effectors in aquatic euryhaline invertebrates [see Gilles, 1975Gilles, , 1978Gilles, , 1979Gilles, , 1983Gilles, , 1987aGilles and Pequeux, 1983 for reviews]. In this frame work, several recent studies indicate that some amino compounds as well as other organic molecules may be intracellular osmolytes playing a nonnegligible part in osmoreg ulation in mammalian kidney medulla cells [Balaban and Knepper, 1983;Beck et al, 1984Beck et al, , 1985Bagnascoet al, 1986Bagnascoet al, .…”

Digestive cells from Mytilus galloprovincialis show a partial regulatory volume decrease following acute hypotonic stress through mechanisms involving inorganic ions

“…On the contrary, the organic osmolytes were involved in long‐term acclimation (3 weeks). The use of organic osmolytes to cope with the stress of chronic exposure to dilute seawater has been already observed in other molluscs . This is probably because of large change in organic compound content occurs over a period of days in mollusc tissues .…”