PMID: 8946329Nov 6, 1996Paper

Two distinct mechanisms generate the respiratory modulation in fibre activity of the rat cervical sympathetic trunk

Journal of the Autonomic Nervous System
H J HäblerW Jänig

Abstract

Preganglionic multifibre activity was recorded in the cervical sympathetic trunk of vagotomized Wistar rats and analysed for its respiratory modulation. The aim of the study was to investigate whether both a central and a reflex component of respiratory modulation are observed in sympathetic activity of rats as was previously demonstrated in cats. For this purpose, sympathetic activity was summed over several hundred cycles (i) with respect to phrenic nerve discharge as an indicator for central respiration and (ii) with respect to tracheal pressure as an indicator for artificial ventilation. As a consequence of vagotomy both cycles were desynchronized. Sympathetic activity which was analysed exhibited a central respiratory modulation with a minimum during inspiration and a broad peak during expiration. Additionally, in the activity of 44/49 filaments a ventilation-related modulation was seen in parallel with the falling phase of the blood pressure waves accompanying artificial ventilation. The analysis of the latter rhythm during central apnoea and after complete sino-aortic denervation proved its reflex origin and its independence of the central respiratory modulation. We conclude that in rats respiratory modulation of sympath...Continue Reading

References

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Citations

Oct 7, 2000·Autonomic Neuroscience : Basic & Clinical·T BartschH J Häbler
Mar 26, 2003·Neuroscience·D R Collins, M P Gilbey
Mar 28, 2009·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Nicola MontanoClaude Julien
Feb 28, 2007·Clinical and Experimental Pharmacology & Physiology·Michael P Gilbey
May 6, 2009·Clinical and Experimental Pharmacology & Physiology·Daniel B ZoccalBenedito H Machado
Aug 28, 2004·Autonomic Neuroscience : Basic & Clinical·Bernat Kocsis, Katalin Gyimesi-Pelczer
Aug 19, 2007·BMC Musculoskeletal Disorders·Kristian B NilsenRolf H Westgaard
May 22, 2009·Autonomic Neuroscience : Basic & Clinical·Chunhua HuangMichael P Gilbey
Mar 11, 2006·The Journal of Physiology·Daniel A Mandel, Ann M Schreihofer
Sep 8, 2006·The Journal of Physiological Sciences : JPS·Atsunori KamiyaMasaru Sugimachi
Sep 7, 2007·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Roy KanbarClaude Julien
Jan 25, 2008·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Priscila A CassagliaAdrian M Walker
Dec 8, 2010·Journal of Pain & Palliative Care Pharmacotherapy·H C J L BuscherO H G Wilder-Smith
Jul 17, 2020·Neuropathology : Official Journal of the Japanese Society of Neuropathology·Remzi ArslanMehmet D Aydin
Jan 12, 2001·Clinical and Experimental Pharmacology & Physiology·M P Gilbey
Jun 4, 2005·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Delphine BertramClaude Julien
May 13, 1999·Journal of Neurophysiology·H HäblerW Jänig
Jun 14, 2003·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Claude JulienChristian Barrès
Aug 26, 2010·Respiratory Physiology & Neurobiology·Daniel B Zoccal, Benedito H Machado

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