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Keywords: heart
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Journal Articles
J Exp Biol (2022) 225 (15): jeb244307.
Published: 10 August 2022
...Georg Welzel; Stefan Schuster ABSTRACT High voltage electric shocks cause life threatening cardiac injuries such as sudden cardiac standstill or severe myocardial injury. Here, we analysed the physiology of the heart of the strongly electric catfish ( Malapterurus beninensis ) that stuns prey...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (12): jeb243680.
Published: 22 June 2022
... accounting for body mass, heart ventricle mass was not related to variation in MMR or SMR, indicating that the quality of the heart (i.e. the capacity for mitochondrial metabolism) was more influential than heart size. Finally, the myocardial oxygen consumption required to offset the dissipation...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (20): jeb242699.
Published: 22 October 2021
... - 65 . Academic Press . Berg , H. C. ( 1993 ). Random Walks in Biology . Princeton, NJ : Princeton University Press . Bodmer , R. ( 1993 ). The gene tinman is required for specification of the heart and visceral muscles in Drosophila . Development 118 , 719 - 729...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (18): jeb242425.
Published: 15 September 2021
..., superoxide dismutase (SOD) activity and NAD + levels, and it prevented HFD-induced or cardiac Nmnat knockdown-induced cardiac lipid accumulation, malondialdehyde (MDA) content and fibrillation increase, and fractional shortening decrease. Cardiac Nmnat overexpression also activated heart Nmnat/NAD + /SIR2...
Journal Articles
J Exp Biol (2021) 224 (16): jeb242778.
Published: 24 August 2021
...Denis V. Abramochkin; Vladislav S. Kuzmin; Vladimir Matchkov; Andrey A. Kamensky; Tobias Wang ABSTRACT To provide the first description of the exact location of primary pacemaker of the squamate heart, we used sharp microelectrode impalements and optical mapping of isolated sinus venosus...
Journal Articles
J Exp Biol (2021) 224 (15): jeb242487.
Published: 5 August 2021
... panel shows results for a given species and acclimation state (char 6°C acclimated N =8, char 15°C acclimated N =9, salmon 6°C acclimated N =10, salmon 15°C acclimated N =11). The highest contraction rate shown at each test temperature is the fastest the heart could be paced and still follow...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (14): jeb242387.
Published: 30 July 2021
... enhanced anoxia survival in adult but not hatchling turtles. To test this, adult and hatchling turtles were acclimated to either 20°C (warm) or 3°C (cold) for 5 weeks, and then the heart ventricles were collected for quantitative proteomic analysis. The relative abundance of 1316 identified proteins...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (9): jeb242382.
Published: 30 April 2021
... and complex I activity. * Author for correspondence ( ammagabu@bio.au.dk ) Competing interests The authors declare no competing or financial interests. 3 2 2021 18 3 2021 © 2021. Published by The Company of Biologists Ltd 2021 Summary: Decreases in trout heart...
Journal Articles
J Exp Biol (2020) 223 (22): jeb225730.
Published: 16 November 2020
... (5H fish), on in vivo and spontaneous heart rate ( f H ), electrocardiogram, ventricular action potential (AP) shape and duration (APD), the background inward rectifier ( I K1 ) and rapid delayed rectifier ( I Kr ) K + currents and ventricular gene expression of proteins involved in excitation...
Journal Articles
J Exp Biol (2020) 223 (19): jeb229278.
Published: 12 October 2020
... and development. Turtle Crocodile Chicken Embryo Heart The vertebrate heart shows great variability in the number of chambers according to animal physiology, life history and phylogeny. Generally in reptiles, ventricular septation varies among clades from a partially septated ventricle in some...
Journal Articles
J Exp Biol (2020) 223 (19): jeb228205.
Published: 8 October 2020
...Tatiana S. Filatova; Denis V. Abramochkin; Holly A. Shiels ABSTRACT Birds occupy a unique position in the evolution of cardiac design. Their hearts are capable of cardiac performance on par with, or exceeding that of mammals, and yet the structure of their cardiomyocytes resembles those of reptiles...
Journal Articles
J Exp Biol (2019) 222 (21): jeb213017.
Published: 11 November 2019
... with oxygen. The highly oxygen-dependent heart mitochondria thus might play a key role in shaping an organism's tolerance to temperature. The present study aimed to investigate the effects of acute and chronic warming on the respiratory capacity of European sea bass ( Dicentrarchus labrax L.) heart...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (17): jeb202788.
Published: 6 September 2019
...Elizabeth F. Johnston; Ivan G. Cadonic; Paul M. Craig; Todd E. Gillis ABSTRACT Warm acclimation of rainbow trout can cause a decrease in the collagen content of the heart. This ability to remove cardiac collagen is particularly interesting considering that collagen deposition in the mammalian heart...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (16): jeb202242.
Published: 20 August 2019
..., there is urgency to understand the compensatory abilities of key organs such as the heart to adjust under natural conditions. Thus, the aim of the present study was to directly compare the acclimatization and acclimatory response within a single eurythermal fish species, the European shorthorn sculpin...
Journal Articles
J Exp Biol (2019) 222 (11): jeb201202.
Published: 4 June 2019
... its redox active motif Cys-X-X-Sec. In mammals, SELENOT is expressed during ontogenesis and progressively decreases in adult tissues. In the heart, it is re-expressed after ischemia and induces cardioprotection against ischemia–reperfusion (IR) injury. SELENOT is present in teleost fish, including...
Journal Articles
J Exp Biol (2018) 221 (12): jeb181107.
Published: 22 June 2018
...Leah T. Sigle; Julián F. Hillyer ABSTRACT The primary pump of the circulatory system of insects is a dorsal vessel that traverses the length of the insect. The anterior portion, located in the head, neck and thorax, is the aorta, and the posterior portion, located in the abdomen, is the heart. Here...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (11): jeb178400.
Published: 7 June 2018
... 2018 16 4 2018 © 2018. Published by The Company of Biologists Ltd 2018 http://www.biologists.com/user-licence-1-1/ Summary: The heart ventricles of squamate reptiles are without a specialized ventricular conduction system, and the manner of electrical activation can therefore...
Journal Articles
J Exp Biol (2017) 220 (23): 4391–4398.
Published: 1 December 2017
...José Guilherme Chaui-Berlinck; Luiz Henrique Alves Monteiro ABSTRACT The Frank–Starling law of the heart is a filling–force mechanism (FFm), a positive relationship between the distension of a ventricular chamber and its force of ejection, and such a mechanism is found across all the studied...
Journal Articles
J Exp Biol (2017) 220 (9): 1674–1683.
Published: 1 May 2017
... in scope for heart rate and cardiac autonomic control during warm acclimation in rainbow trout . J. Exp. Biol.   219 , 1106 - 1109 . 10.1242/jeb.134312 Ekström , A. , Sandblom , E. , Blier , P. U. , Dupont Cyr , B.-A. , Brijs , J. and Pichaud , N. ( 2016b ). Thermal...
Journal Articles
J Exp Biol (2017) 220 (4): 531–536.
Published: 15 February 2017
.... 12 9 2016 6 12 2016 © 2017. Published by The Company of Biologists Ltd 2017 http://www.biologists.com/user-licence-1-1/ Summary: Shunting in reptiles is ineffective for regulating gastric CO 2 supply but effectively reduces blood O 2 levels. Gas exchange Heart...