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Stress-elicited changes in amino acid levels of hemolymph of Aplysia californica |
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| Authors: | J K Krontiris-Litowitz E T Walters D J McAdoo |
| Institution: | (1) Department of Biological Sciences, Youngstown State University, 410 Wick Ave., 44555 Youngstown, OH, USA;(2) Department of Physiology and Cell Biology, University of Texas Medical School, P.O. Box 20708, 77225 Houston, TX, USA;(3) Marine Biomedical Institute, University of Texas Medical Branch, 200 University Boulevard, 77550-2772 Galveston, TX, USA;(4) Department of Human Biological Chemistry and Genetics, University of Texas Medical Branch, 200 University Boulevard, 77550-2772 Galveston, TX, USA |
| Abstract: | The effects of stress produced by noxious cutaneous stimulation on the concentration of 18 amino acids in the hemolymph of Aplysia californica were examined. The concentration of alanine and glutamate increased in response to stress and remained elevated for at least 6 h. The total amino acid concentration in the hemolymph did not change significantly in response to stress. It is concluded that stress evokes an increase in circulating alanine and glutamate levels. These factors may then act in a paracrine, endocrine, or neuroendocrine manner to modify stress-associated behaviors.Abbreviations AA amino acids(s) - bw body weight - SEM standard error of the mean - SW sea water |
| Keywords: | Stress Amino acids Hemolymph Humoral signals Snail Aplysia |
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