Physiological amino acids in brain tissue of the lepismatids,Lepisma saccharina and Thermobia domestica (Insecta,Thysanura) |
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| Institution: | 1. Laboratory of Oncology, IRCCS Fondazione Casa Sollevo della Sofferenza, San Giovanni Rotondo, Foggia 71013, Italy.;2. Unit of Pathology, Fondazione IRCSS Casa Sollievo della Sofferenza, San Giovanni Rotondo (FG), Italy;3. Oncology Department, Fondazione IRCSS Casa Sollievo della Sofferenza, San Giovanni Rotondo (FG), Italy |
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| Abstract: | 1. The free (physiological) amino acid profile in the brain tissue of Lepisma saccharina and Thermobia domestica (Thysanura, Lepismatidae) was investigated.2. Nitrogenous waste products (ammonia and urea) together constituted 28% of the total ninhydrinpositive compounds for both species.3. GABA accounted for 3% of the total ninhydrin-positive compounds in the brain of L. saccharina, and T. domestica.4. Glutamate comprised 7% of the total ninhydrin-positive compounds in the brain of L. saccharina, and 8% in T. domestica.5. The most abundant amino acids were alanine, proline, arginine and taurine.6. The possible role of amino acids as neurotransmitters and/or modulators of neurotransmitter activity is discussed as well as the comparative free amino acid composition of the brain tissues of various arthropod groups. |
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