Kidney function in response to salt feeding in rainbow trout (Salmo gairdneri Richardson).
1. The effect of high levels of dietary salt up to 12% NaCl on kidney function in freshwater rainbow trout was investigated. 2. Renal response to dietary NaCl load includes increases in urinary flow rate and glomerular filtration rate, together with a slight reduction in ionic reabsorption capacity. 3. The renal salt excretion rate, which was doubled to about 100 microM/kg/hr, in fish fed the high salt diet, is not entirely a consequence of a reduction in tubular ionic reabsorption but also of increased glomerular filtration. 4. The role of the endocrine system in control of renal salt excretion is discussed.
D000818:Animals; D004573:Electrolytes / Q000652:urine; D005618:Fresh Water; D005919:Glomerular Filtration Rate / Q000187:drug effects; D007668:Kidney / Q000187:drug effects / Q000502:physiology*; D012487:Salmonidae / Q000502:physiology*; D012982:Sodium, Dietary / Q000494:pharmacology*; D014337:Trout / Q000502:physiology*
D004573:Electrolytes; D012982:Sodium, Dietary