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Carotid occlusion increases the release of endogenous GABA in the nucleus of the solitary tract

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Summary

In anaesthetized cats, the nucleus of the solitary tract was bilaterally superfused through push-pull cannulae with artificial cerebrospinal fluid (CSF) and the effect of carotid occlusion on the release of endogenous GABA was investigated.

Bilateral carotid occlusion led to a rise in blood pressure which was associated with a very pronounced increase in the release rate of GABA in the nucleus of the solitary tract. The results demonstrate the hypertensive function of GABA in the nucleus of the solitary tract and the importance of GABAergic neurons of this nucleus for the central cardiovascular control.

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References

  • Berman AL (1968) The brainstem of the cat. A cytoarchitectonic atlas with stereotaxic coordinates. The University of Wisconsin Press, Madison

    Google Scholar 

  • Bousquet P, Feldman J, Bloch R, Schwartz J (1982) Evidence for a neuromodulatory role of GABA at the first synapse of the baroreceptor reflex pathway. Effects of GABA derivatives injected into the NTS. Naunyn-Schmiedeberg's Arch Pharmacol 319:168–171

    Google Scholar 

  • Catelli JM, Giakas WJ, Sved AF (1987) GABAergic mechanisms in nucleus tractus solitarius alter blood pressure and vasopressin release. Brain Res 403:279–289

    Google Scholar 

  • Died H, Philippu A (1979) In vivo release of endogenous GABA in the cat hypothalamus. Naunyn-Schmiedeberg's Arch Pharmacol 308:143–147

    Google Scholar 

  • Hwang BH, Wu JY (1984) Ultrastructural studies on catecholaminergic terminals and GABAergic neurons in nucleus tractus solitarius of the rat medulla oblongata. Brain Res 302: 57–67

    Google Scholar 

  • Klüver H, Barrera E (1953) A method for the combined staining of cells and fibers in the nervous system. J Neuropathol Exp Neurol 12:400–403

    Google Scholar 

  • Krogsgaard-Larsen P, Johnston GAR (1975) Inhibition of GABA uptake in rat brain slices by nipecotic acid, various isoxazoles and related compounds. J Neurochem 25:797–802

    Google Scholar 

  • Kubo T, Kihara M (1987) Evidence for the presence of GABAergic and glycine-like systems responsible for cardiovascular control in the nucleus tractus solitarii of the rat. Neurosci Lett 74: 331–336

    Google Scholar 

  • Lanzinger I, Kobilansky C, Philippu A (1989) Pattern of catecholamine release in the nucleus tractus solitarii of the cat. Naunyn-Schmiedeberg's Arch Pharmacol 339:298–301

    Google Scholar 

  • Maley B, Newton BW (1985) Immunohistochemistry of γ-amino-butyric acid in the cat nucleus tractus solitarius. Brain Res 330:364–368

    Google Scholar 

  • Meeley MP, Ruggiero DA, Ishitsuka T, Reis DJ (1985) Intrinsic γ-aminobutyric acid neurons in the nucleus of the solitary tract and the rostral ventrolateral medulla of the rat: an immunocytochemical and biochemical study. Neurosci Lett 58:83–89

    Google Scholar 

  • Okada Y, Nitsch-Hassler C, Kim JS, Bak IJ, Hassler R (1971) Role of γ-aminobutyric acid (GABA) in the extrapyramidal motor system. 1. Regional distribution of GABA in rabbit, rat, guinea pig and baboon CNS. Exp Brain Res 13:514–518

    Google Scholar 

  • Philippu A, Przuntek H, Rosenberg W (1973) Superfusion of the hypothalamus with γ-aminobutyric acid. Effect on release of noradrenaline and blood pressure Naunyn-Schmiedeberg's Arch Pharmacol 76:103–118

    Google Scholar 

  • Schousboe A, Thorbek P, Hertz L, Krogsgaard-Larsen P (1979) Effects of GABA analogues of restricted conformation on GABA transport in astrocytes and brain cortex slices and on GABA receptor binding. J Neurochem 33:181–189

    Google Scholar 

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This work was supported by the Fonds zur Fbrderung der wissenschaftlichen Forschung

Send offprint requests to A. Philippu at the above address

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Klausmair, A., Philippu, A. Carotid occlusion increases the release of endogenous GABA in the nucleus of the solitary tract. Naunyn-Schmiedeberg's Arch Pharmacol 340, 764–766 (1989). https://doi.org/10.1007/BF00169687

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  • DOI: https://doi.org/10.1007/BF00169687

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