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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Measurement of glutamate and aspartate in Planaria.

INTRODUCTION: The major excitatory neurotransmitters in the mammalian central nervous system are glutamate and aspartate. We developed a rapid and efficient method for the extraction and measurement of these amino acids in Planaria--a valuable model for mammalian processes because of their simple, centralized nervous system and similar neurotransmitter systems. METHOD: The method utilized buffer extraction (perchloric acid containing 0.025% of L-cystine and Na2EDTA), simple derivatization, high-pressure liquid chromatography (HPLC), and fluorescence detection. RESULTS: The mean+/-S.E.M. amounts of glutamate and aspartate were 322.6+/-43.6 and 188.6+/-27.6 pmol/mg-planarian, respectively. DISCUSSION: The method provides the ability to investigate changes in glutamate and aspartate in response to drug administration or withdrawal.[1]


  1. Measurement of glutamate and aspartate in Planaria. Rawls, S.M., Gomez, T., Stagliano, G.W., Raffa, R.B. Journal of pharmacological and toxicological methods. (2006) [Pubmed]
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