The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes

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Standard

The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes. / Skov, Peter Vilhelm; Bushnell, Peter G.; Tirsgaard, Bjørn; Steffensen, John Fleng.

In: Polar Biology, Vol. 32, No. 2, 2009, p. 215-223.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Skov, PV, Bushnell, PG, Tirsgaard, B & Steffensen, JF 2009, 'The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes', Polar Biology, vol. 32, no. 2, pp. 215-223. https://doi.org/10.1007/s00300-008-0522-0

APA

Skov, P. V., Bushnell, P. G., Tirsgaard, B., & Steffensen, J. F. (2009). The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes. Polar Biology, 32(2), 215-223. https://doi.org/10.1007/s00300-008-0522-0

Vancouver

Skov PV, Bushnell PG, Tirsgaard B, Steffensen JF. The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes. Polar Biology. 2009;32(2):215-223. https://doi.org/10.1007/s00300-008-0522-0

Author

Skov, Peter Vilhelm ; Bushnell, Peter G. ; Tirsgaard, Bjørn ; Steffensen, John Fleng. / The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes. In: Polar Biology. 2009 ; Vol. 32, No. 2. pp. 215-223.

Bibtex

@article{7c4fc980b35511df825b000ea68e967b,
title = "The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes",
abstract = "Abstract: The present work was performed to test the hypothesis that Antarctic teleosts rely mostly on cholinergic inhibition for autonomic modulation of the heart. The effects of adrenaline on the inotropic properties on paced, isometrically contracting muscle strips were examined in two distinct Antarctic teleosts, the haemoglobinless icefish Chaenocephalus aceratus and the red-blooded Notothenia coriiceps. All tissues examined revealed a negative force-frequency relationship. Under baseline conditions C. aceratus contracted with a force twice as great as that of N. coriiceps. While the degree to which ventricular tissues responded to adrenaline varied between species, adrenergic stimulation significantly increases myocyte contraction force in this group of fishes. Contraction and relaxation times were not significantly affected by adrenaline concentration while absolute rates of contraction were. Adrenergic stimulation does not enable tissues to achieve higher contraction frequencies, but is shown to be a potent modulator of contraction force.",
author = "Skov, {Peter Vilhelm} and Bushnell, {Peter G.} and Bj{\o}rn Tirsgaard and Steffensen, {John Fleng}",
note = "Keywords Adrenaline Acetylcholine Ventricle Atrium Icefish Isometric contraction Peak tension Chaenocephalus Notothenia",
year = "2009",
doi = "10.1007/s00300-008-0522-0",
language = "English",
volume = "32",
pages = "215--223",
journal = "Polar Biology",
issn = "0722-4060",
publisher = "Springer",
number = "2",

}

RIS

TY - JOUR

T1 - The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes

AU - Skov, Peter Vilhelm

AU - Bushnell, Peter G.

AU - Tirsgaard, Bjørn

AU - Steffensen, John Fleng

N1 - Keywords Adrenaline Acetylcholine Ventricle Atrium Icefish Isometric contraction Peak tension Chaenocephalus Notothenia

PY - 2009

Y1 - 2009

N2 - Abstract: The present work was performed to test the hypothesis that Antarctic teleosts rely mostly on cholinergic inhibition for autonomic modulation of the heart. The effects of adrenaline on the inotropic properties on paced, isometrically contracting muscle strips were examined in two distinct Antarctic teleosts, the haemoglobinless icefish Chaenocephalus aceratus and the red-blooded Notothenia coriiceps. All tissues examined revealed a negative force-frequency relationship. Under baseline conditions C. aceratus contracted with a force twice as great as that of N. coriiceps. While the degree to which ventricular tissues responded to adrenaline varied between species, adrenergic stimulation significantly increases myocyte contraction force in this group of fishes. Contraction and relaxation times were not significantly affected by adrenaline concentration while absolute rates of contraction were. Adrenergic stimulation does not enable tissues to achieve higher contraction frequencies, but is shown to be a potent modulator of contraction force.

AB - Abstract: The present work was performed to test the hypothesis that Antarctic teleosts rely mostly on cholinergic inhibition for autonomic modulation of the heart. The effects of adrenaline on the inotropic properties on paced, isometrically contracting muscle strips were examined in two distinct Antarctic teleosts, the haemoglobinless icefish Chaenocephalus aceratus and the red-blooded Notothenia coriiceps. All tissues examined revealed a negative force-frequency relationship. Under baseline conditions C. aceratus contracted with a force twice as great as that of N. coriiceps. While the degree to which ventricular tissues responded to adrenaline varied between species, adrenergic stimulation significantly increases myocyte contraction force in this group of fishes. Contraction and relaxation times were not significantly affected by adrenaline concentration while absolute rates of contraction were. Adrenergic stimulation does not enable tissues to achieve higher contraction frequencies, but is shown to be a potent modulator of contraction force.

U2 - 10.1007/s00300-008-0522-0

DO - 10.1007/s00300-008-0522-0

M3 - Journal article

VL - 32

SP - 215

EP - 223

JO - Polar Biology

JF - Polar Biology

SN - 0722-4060

IS - 2

ER -

ID: 21633189