Action sur l'osmoregulation de l'anguille de divers antibiotiques inhibiteurs de la synthese des proteines ou du renouvellement cellulaire

Maetz, J.; Nibelle, J.; Bornancin, M.; Motais, R

doi:10.1016/0010-406x(69)91049-4

Cited by 19 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It may be relevant that Dietz et al (1967) reported ouabain to have no effect on the transepithelial potential in larval salamanders in pond water, since the generation of this potential seems to involve independent cation and anion-exchange pumps similar to those in the gills. Some interesting observations on the effect on osmoregulation in the eel of various antibiotics which are supposed to inhibit protein synthesis have been reported by Maetz et al (1969). In sea water, actinomycin D blocks the excretion of salt by the gills, and the treated fish die with a high plasma [NaCl].…”

Section: The Effect Of Inhibitorsmentioning

confidence: 99%

From frog skin to sheep rumen: a survey of transport of salts and water across multicellular structures

Keynes¹

1969

Quart. Rev. Biophys.

136

View full text Add to dashboard Cite

All higher animals, whether they live in water or on dry land, are faced with the necessity of regulating rather closely their intake and excretion of salts and water in order to maintain the constancy of their internal ionic environment. The kidney is in general the most important organ of the body as far as the excretion of sodium, potassium, chloride and water is concerned, but there are other tissues which also play a part in controlling the ionic balance between the internal and external environments, such as the intestinal mucosa, the skin and urinary bladder in amphibia, the gill epithelium in fishes, the salt gland in marine birds, and the epithelium of the rumen in ruminants. In addition to excretory and absorptive organs of this type, there are others which are secretory and whose function involves the production of fluids differing in ionic composition from the blood plasma. Examples include the glands which secrete saliva and sweat, the oxyntic acid-producing cells of the gastric mucosa, and the epithelium of the stria vascularis which generates the potassium-rich endolymph of the mammalian cochlea. The purpose of this article is to consider briefly what is known about the active transport of salts and water across some typical multicellular secretory tissues, and to attempt in the process to discern what properties they have in common and in what respects they are specialized.

show abstract

Section: The Effect Of Inhibitorsmentioning

confidence: 99%

From frog skin to sheep rumen: a survey of transport of salts and water across multicellular structures

Keynes¹

1969

Quart. Rev. Biophys.

136

View full text Add to dashboard Cite

show abstract

“…This is true of SW-and FW-adapted A. anguilla, and in this species the high SW turnover rate is reduced by hypophysectomy or adrenalectomy and is restored by ACTH in hypophysectomized animals, and by cortisol after adrenalectomy Mayer, Maetz, Chan, Forster & Chester Jones, 1967). The adjustment of Na+ outflux on entering SW is completed within about 2 days (Maetz, Nibelle, Bornancin & Motáis, 1969), but adrenalectomized eels are unable to make this adjustment unless given cortisol ). Enhanced Na+ transport by isolated gills of A. japónica was detected after 6-12 h in SW (at 20°C ) and reached SW levels after 24 h (Kamiya, 1967), which correlates with Hirano's (1969) previously quoted determinations of plasma cortisol levels in this species under similar conditions.…”

Section: Discussionmentioning

confidence: 89%

Measurement of Plasma Cortisol Levels in the Eel Anguilla Anguilla in Relation to Osmotic Adjustments

Jn¹,

Ic²,

Me³

et al. 1971

Journal of Endocrinology

View full text Add to dashboard Cite

The competitive protein-binding radioassay (CPB method) of Murphy (1967) has been adapted to determine total cortisol levels in the plasma of the eel, Anguilla anguilla L. Validation of the method for this species depended in part on the development of a chromatographic\p=m-\fluorimetrictechnique for eel cortisol, following classical procedures and using radioactive tracers; by this means, the specificity of the CPB method for cortisol in eel plasma was established. Accuracy, precision and sensitivity of the CPB method were also investigated and were shown to be satisfactory.Plasma total cortisol levels were determined in eels during osmotic adjustments after transfers from fresh water (FW) to sea-water (SW) and vice versa, and from FW to distilled water. Plasma osmotic pressure and/or sodium levels were monitored simultaneously, to follow the progress of osmotic regulation. In only one of the transfer situations did the plasma cortisol level change significantly, showing a marked transitory increase during the first few days after transfer from FW to SW, corresponding to the development and correction of an 'osmotic crisis'. Plasma cortisol levels were the same in eels adapted for long periods to FW and to SW. Plasma cortisol fell to extremely low levels after hypophysectomy.These results are discussed in the light of the literature on hormonal control of osmoregulatory mechanisms in the eel, with particular emphasis on the role of adrenocorticosteroids in ionic regulation of animals in SW.

show abstract

Rapid activation of gill Na+,K+-ATPase in the euryhaline teleostFundulus heteroclitus

Mancera

McCormick²

2000

J. Exp. Zool.

View full text Add to dashboard Cite

Action sur l'osmoregulation de l'anguille de divers antibiotiques inhibiteurs de la synthese des proteines ou du renouvellement cellulaire

Cited by 19 publications

References 36 publications

From frog skin to sheep rumen: a survey of transport of salts and water across multicellular structures

From frog skin to sheep rumen: a survey of transport of salts and water across multicellular structures

Measurement of Plasma Cortisol Levels in the Eel Anguilla Anguilla in Relation to Osmotic Adjustments

Rapid activation of gill Na+,K+-ATPase in the euryhaline teleostFundulus heteroclitus

Contact Info

Product

Resources

About