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The Psychobiology of Neurotensin

  • B. Levant
  • C. B. Nemeroff
Part of the Current Topics in Neuroendocrinology book series (CT NEUROENDOCRI, volume 8)

Abstract

The tridecapeptide neurotensin (NT) was first identified in bovine hypothalamic extracts and characterized by Carraway and Leeman (1973, 1975,1976) and has subsequently been found in all classes of vertebrates (Carraway and Leeman 1976; Kitabgi et al. 1976; Kataoka et al. 1979; Langer et al. 1979; Reinecke et al. 1980 a; Cooper et al. 1981; Grant et al. 1982; Carraway et al. 1982; Eldred and Karten 1983), many invertebrates (Reinecke et al. 1980 b; Grimmelikhuijzen et al. 1981; Price et al. 1982), and certain bacteria (Bhatnagar and Carraway 1981). It is distributed throughout the mammalian central nervous system (CNS) (Uhl and Snyder 1977 a, b), gastrointestinal tract (Sundler et al. 1977; Schultzberg et al. 1980), cerebrospinal fluid (CSF), adrenals, pancreas, and plasma (Fernstrom et al. 1980). When administered systemically, the peptide has a variety of effects such as hypotension, hyperglycemia, decreased gastric acid secretion, decreased gut motility, and altered secretion of anterior pituitary hormones (Leeman and Carraway 1982). NT apparently does not cross the blood-brain barrier in appreciable quantities; however, when administered directly into the CNS, it produces a number of physiological and behavioral effects. A burgeoning body of evidence supports the role of NT as a neurotransmitter or neuromodulator. Thus far, heterogeneous CNS distribution, release of NT upon neuronal depolarization, satu- rable and specific binding of NT to receptors, and degradation by peptidases have all been demonstrated.

Keywords

Nucleus Accumbens Ventral Tegmental Area Thyrotropin Release Hormone Amacrine Cell Neurotensin Receptor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • B. Levant
    • 1
  • C. B. Nemeroff
    • 2
  1. 1.Department of PharmacologyDuke University Medical CenterDurhamUSA
  2. 2.Departments of Psychiatry and PharmacologyDuke University Medical CenterDurhamUSA

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