GABA, 5-HT and amino acids in the rotifers Brachionus plicatilis and Brachionus rotundiformis
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γ-Aminobutyric acid (GABA) and 5-hydroxytryptamine (5-HT) have been shown to increase the reproduction of the Brachionus plicatilis (NH3L strain). In the present study, the endogenous presence of GABA and 5-HT in the rotifers B. plicatilis (NH3L and Kamiura strains) and Brachionus rotundiformis (Langkawi strain) were confirmed by dot blot immunoassay and high-performance liquid chromatography (HPLC). HPLC showed that GABA and 5-HT concentrations in the three rotifer strains range from 71 to 188 pmol/mg and from 12 to 64 pmol/mg, respectively. A total of 33 amino acids were also detected in B. plicatilis and B. rotundiformis, with glutamic acid, serine, glycine, taurine, threonine, alanine, arginine, proline, valine and isoleucine in high concentrations relative to other amino acids.
KeywordsAmino acids Brachionus Dot blot immunoassay 5-HT GABA HPLC Neurotransmitters Rotifera Serotonin
Gallardo, W. G., Hagiwara, A., Hara, K., Soyano, K., & Snell, T. W. (2000). GABA, 5-HT and amino acids in the rotifers Brachionus plicatilis and Brachionus rotundiformis.
Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, 127(3), 301-307. https://doi.org/10.1016/S1095-6433(00)00266-X
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