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Involvement of α-Adrenoceptors to the Implementation of the Contractile Effects in the Capsule of Mesenteric Lymph Nodes in Response to Electrostimulation

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We studied changes in the contractile function of smooth muscle cells in bovine mesenteric lymph node capsule caused by electrical stimulation of nerve fibers in vitro. It was found that electrostimulation increased tonic tension and frequency of smooth muscle contractions in the node capsule. Tetrodotoxin prevented the stimulatory effect of electrical stimulation on the smooth muscle cells. Phentolamine, prazosin, and yohimbine significantly reduced the capsule response to electrical stimulation and norepinephrine application. It was concluded that excitation of nerve fibers in the capsule of bovine mesenteric lymph nodes upon electrical stimulation is realized, at least in part, via activation of α1-adrenoceptors and, to a lesser extent, via α2-adrenoceptors located on the membrane of smooth muscle cells.

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Authors and Affiliations

  1. Laboratory of Blood Circulation Physiology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia

    G. I. Lobov & M. N. Pan’kova

Authors
  1. G. I. Lobov
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  2. M. N. Pan’kova
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Correspondence to G. I. Lobov.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 154, No. 11, pp. 540-543, November, 2012

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Lobov, G.I., Pan’kova, M.N. Involvement of α-Adrenoceptors to the Implementation of the Contractile Effects in the Capsule of Mesenteric Lymph Nodes in Response to Electrostimulation. Bull Exp Biol Med 154, 588–590 (2013). https://doi.org/10.1007/s10517-013-2005-8

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  • DOI: https://doi.org/10.1007/s10517-013-2005-8

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