Transmitter and Peptide Systems in Areas Involved in the Control of Blood Pressure

T. Höktelt Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

B. J. Everitt Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

K. Fuxe Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

M. Kalia Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

L. Agnati Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

O. Johansson Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

A. Härfstrand Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

J. M. Lundberg Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

L. Terenius Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

E. Theodorsson-norheim Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

M. Goldstein Departments of Histology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Pharmacology, Uppsala University, Uppsala, Sweden; Department of Human Physiology, University of Modena, Modena, Italy; Department of Psychiatry, New York University Medical Center, New York, NY, USA

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Abstract

The distribution of catecholamine neurons in the dorsal vagal complex is described on the basis of indirect immunofluorescence histochemistry using antisera to three enzymes in the catecholamine synthesis, tyrosine hydroxylase, dopamine-β-hydroxylase and phenylethanolamine-N-methyltransferase, allowing differentiation between dopamine, noradrenaline and adrenaline cells. In addition attention was focused on the occurrence of two peptides, neuropeptide Y (NPY) and neurotensin in this region. It could be established that they partly were present in subpopulations of the A2/C2 catecholamine neurons. The significance of this coexistence of a peptide and a catecholamine is discussed.

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Transmitter and Peptide Systems in Areas Involved in the Control of Blood Pressure

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