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Changes with aging in the levels of amino acids in rat CNS structural elements II. Taurine and small neutral amino acids

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Abstract

Taurine (Tau) and the small neutral amino acids glycine (Gly), serine (Ser), threonine (Thr), and alanine (Ala) were measured in 53 brain areas of 3- and 29-month-old male Fisher 344 rats. The ratio of highest to lowest level was 34 for Tau, 9.1 for Thr, 7.6 for Gly and Ser, and 6.5 for Ala. The heterogeneity was found in numerous areas; for example, Tau levels were more than 90 nmol/mg protein in 6 areas, and less than 20 nmol/mg protein in 10 areas. Similar heterogeneity was found with the other amino acids. The relative distribution of the small neutral amino acids showed several similarities; Tau distribution was different. With age, four amino acids decreased in 10–18 areas, and increased in only 1–3, while Thr increased in more areas than it decreased. The five amino acids of this paper, and the four of the previous paper, are among the amino acids at highest level in the brain; the sequence in their levels shows considerable regional heterogeneity.

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Authors and Affiliations

  1. The Nathan S. Kline Institute for Psychiatric Research and New York University Medical Center, New York

    M. Banay-Schwartz & A. Lajtha

  2. First Department of Anatomy, Semmelweis University Medical School, Budapest, Hungary

    M. Palkovits

  3. Laboratory of Cell Biology, National Institute of Mental Health, Bethesda, Maryland

    M. Palkovits

Authors
  1. M. Banay-Schwartz
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  2. A. Lajtha
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  3. M. Palkovits
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Banay-Schwartz, M., Lajtha, A. & Palkovits, M. Changes with aging in the levels of amino acids in rat CNS structural elements II. Taurine and small neutral amino acids. Neurochem Res 14, 563–570 (1989). https://doi.org/10.1007/BF00964919

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