Cortisol response of green sturgeon to acid-infusion stress.
Identifieur interne : 001064 ( Main/Merge ); précédent : 001063; suivant : 001065Cortisol response of green sturgeon to acid-infusion stress.
Auteurs : Daniel E. Warren [États-Unis] ; Shinsyu Matsumoto ; Julie M. Roessig ; Joseph J. CechSource :
- Comparative biochemistry and physiology. Part A, Molecular & integrative physiology [ 1095-6433 ] ; 2004.
English descriptors
- KwdEn :
- Acid-Base Equilibrium, Animals, Blood Glucose (analysis), Fishes (physiology), Hydrochloric Acid (adverse effects), Hydrocortisone (metabolism), Hydrogen-Ion Concentration, Infusions, Parenteral, Lactic Acid (administration & dosage), Lactic Acid (adverse effects), Oxygen (blood), Physical Conditioning, Animal, Stress, Physiological, Time Factors.
- MESH :
- chemical , administration & dosage : Lactic Acid.
- chemical , adverse effects : Hydrochloric Acid, Lactic Acid.
- chemical , analysis : Blood Glucose.
- chemical , blood : Oxygen.
- chemical , metabolism : Hydrocortisone.
- physiology : Fishes.
- Acid-Base Equilibrium, Animals, Hydrogen-Ion Concentration, Infusions, Parenteral, Physical Conditioning, Animal, Stress, Physiological, Time Factors.
Abstract
Cortisol and lactate are classic indicators of stress in fishes and their interactive effects on metabolism during recovery from stress have recently become a subject of more intense study. We examined how stressing green sturgeon through acid infusion affected the cortisol response and lactate metabolism in green sturgeon (Acipenser medirostris). Both lactic acid (0.3 M) and HCl (0.3 N) infusion (infusion volumes 1.5 ml kg(-1)) elicited an immediate cortisol response (21.61+/-4.61 ng ml(-1) and 17.50+/-3.00 ng ml(-1), respectively). Lactic acid prolonged the cortisol response compared to HCl (90 min vs. 25 min). Neutralized lactate (0.23 M; with 1 N NaOH; final pH 7.8) and NaCl (0.9%) infusion (infusion volumes 1.5 ml kg(-1)) did not affect plasma cortisol. Sturgeon infused with lactic acid showed a faster rate of lactate disappearance from plasma than those with neutralized lactic acid. We relate these findings to lactate metabolism following exercise, acid-infusion and air immersion stress in fishes.
DOI: 10.1016/j.cbpb.2003.12.002
PubMed: 15123198
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We examined how stressing green sturgeon through acid infusion affected the cortisol response and lactate metabolism in green sturgeon (Acipenser medirostris). Both lactic acid (0.3 M) and HCl (0.3 N) infusion (infusion volumes 1.5 ml kg(-1)) elicited an immediate cortisol response (21.61+/-4.61 ng ml(-1) and 17.50+/-3.00 ng ml(-1), respectively). Lactic acid prolonged the cortisol response compared to HCl (90 min vs. 25 min). Neutralized lactate (0.23 M; with 1 N NaOH; final pH 7.8) and NaCl (0.9%) infusion (infusion volumes 1.5 ml kg(-1)) did not affect plasma cortisol. Sturgeon infused with lactic acid showed a faster rate of lactate disappearance from plasma than those with neutralized lactic acid. We relate these findings to lactate metabolism following exercise, acid-infusion and air immersion stress in fishes.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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