Prostacyclin producing activity of human umbilical blood vessels in adrenergic innervated and non-innervated portions

The present experiment was performed in order to clarify the significance of prostacyclin (PGI 2) in the regulation of human umbilical blood flow. Distribution of adrenergic nerve fibers in umbilical cord was examined by means of a modification of the glyoxylic acid fluorescence histochemical techni...

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Veröffentlicht in:Prostaglandins, leukotrienes and essential fatty acids leukotrienes and essential fatty acids, 1990-03, Vol.39 (3), p.239-245
Hauptverfasser: Kawano, Michihisa, Mori, Norimasa
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container_title Prostaglandins, leukotrienes and essential fatty acids
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creator Kawano, Michihisa
Mori, Norimasa
description The present experiment was performed in order to clarify the significance of prostacyclin (PGI 2) in the regulation of human umbilical blood flow. Distribution of adrenergic nerve fibers in umbilical cord was examined by means of a modification of the glyoxylic acid fluorescence histochemical technique. PGI 2 producing activity in various portions of umbilical blood vessels was measured by platelet bioassay. Adrenergic nerve fibers were observed only in the region surrounding umbilical arteries at the fetal end of the cord. PGI 2 producing activity of umbilical arteries was significantly lower in the innervated region than in the non-innervated region. There were no significant regional differences in umbilical vein which has no adrenergic innervation. The relationship between vascular PGI 2 producing activity and adrenergic innervation, and the significance of PGI 2 in the regulation of human umbilical blood flow are discussed.
doi_str_mv 10.1016/0952-3278(90)90079-Z
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Distribution of adrenergic nerve fibers in umbilical cord was examined by means of a modification of the glyoxylic acid fluorescence histochemical technique. PGI 2 producing activity in various portions of umbilical blood vessels was measured by platelet bioassay. Adrenergic nerve fibers were observed only in the region surrounding umbilical arteries at the fetal end of the cord. PGI 2 producing activity of umbilical arteries was significantly lower in the innervated region than in the non-innervated region. There were no significant regional differences in umbilical vein which has no adrenergic innervation. The relationship between vascular PGI 2 producing activity and adrenergic innervation, and the significance of PGI 2 in the regulation of human umbilical blood flow are discussed.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>2110680</pmid><doi>10.1016/0952-3278(90)90079-Z</doi><tpages>7</tpages></addata></record>
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subjects Adrenergic Fibers - metabolism
Adrenergic Fibers - ultrastructure
Biological and medical sciences
Epoprostenol - antagonists & inhibitors
Epoprostenol - metabolism
Female
Fundamental and applied biological sciences. Psychology
Humans
Indomethacin - pharmacology
Kinetics
Microscopy, Fluorescence
Pregnancy
Prostaglandins. Arachidonic acid metabolites
Regional Blood Flow
Umbilical Arteries - metabolism
Umbilical Arteries - ultrastructure
Umbilical Cord - blood supply
Umbilical Cord - innervation
Umbilical Cord - metabolism
Umbilical Cord - ultrastructure
Umbilical Veins - metabolism
Umbilical Veins - ultrastructure
Vertebrates: endocrinology
title Prostacyclin producing activity of human umbilical blood vessels in adrenergic innervated and non-innervated portions
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