Taurine in the insect central nervous system |
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Affiliation: | 1. Laboratory of Molecular Toxicology, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China;2. Group of Insect Virology, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China |
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Abstract: | 1. Taurine is one of the most abundant free amino acids found in the tissues of insect nervous systems. A brief survey of its immunocytochemical distribution is provided for the brain of worker honeybees.2. The protocerebral mushroom bodies are prominent neuropiles of the insect brain. Immunoreactivity for taurine was compared in the mushroom body intrinsic Kenyon cells of Apis, Drosophila, and Locusta.3. In all three species Kenyon cells expressed immunoreactivity.4. The intensity of the immunoreactivity was, however, graded, depending on the species.5. Recent technical advances in the primary culture of the Kenyon cells of honeybees in a defined taurine-free medium provide the opportunity to investigate the action of taurine in a controlled environment.6. Taurine-like immunoreactivity has been described in the photoreceptor cells of insect and mammalian visual systems. Physiological evidence for similar functions of taurine in mammalian and insect nervous systems is reviewed. |
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