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Keywords: anoxia
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Journal Articles
J Exp Biol (2022) 225 (12): jeb244145.
Published: 16 June 2022
... to low-oxygen stress were studied. The results showed an increase in p-p53 levels during anoxia in both hepatopancreas and tail muscle. Increased transcript levels of ei24 support the activation of p53 under anoxic stress. Cytoplasmic accumulation of Ser15 phosphorylated p53 was observed during anoxia...
Journal Articles
J Exp Biol (2022) 225 (6): jeb243672.
Published: 16 March 2022
... by The Company of Biologists Ltd 2022 Summary: Arapaima gigas maintains aquatic CO 2 excretion in severely hypoxic water but can completely avoid oxygen loss. Air-breathing fish Anoxia Fuel use Gas exchange Respirometry Teleost Natur og Univers, Det Frie Forskningsråd http...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (20): jeb229716.
Published: 14 October 2020
...Daniel E. Zajic; Jason E. Podrabsky ABSTRACT In most vertebrates, a lack of oxygen quickly leads to irreparable damages to vital organs, such as the brain and heart. However, there are some vertebrates that have evolved mechanisms to survive periods of no oxygen (anoxia). The annual killifish...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (10): jeb204594.
Published: 18 May 2020
..., by microRNAs that can rapidly and reversibly target all biological functions. Herein, we review the involvement of microRNAs in natural models of anoxia and hypoxia tolerance, with a focus on the involvement of oxygen-responsive microRNAs (OxymiRs) in coordinating the metabolic rate depression that allows...
Journal Articles
J Exp Biol (2019) 222 (12): jeb203976.
Published: 19 June 2019
..., but anoxia had no further effect, except in the brain. These results show tissue-dependent sulfide signaling with a potential role in brain metabolic suppression during anoxia in turtles. * Author for correspondence ( angela.fago@bios.au.dk ) Competing interests The authors declare no competing...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (8): jeb174391.
Published: 25 April 2018
... and reperfusion causes a burst of mitochondrial reactive oxygen species (ROS) in mammals, the question arises as to whether, and if so how, this ROS burst is prevented in the turtle heart. We find that heart mitochondria isolated from turtles acclimated to anoxia produce less ROS than mitochondria from normoxic...
Journal Articles
J Exp Biol (2016) 219 (19): 3126–3136.
Published: 1 October 2016
... for surviving anoxia and subsequently reestablishing normal patterns of respiration. Pupae of Manduca sexta were experimentally immersed in water for between 0 and 13 days. All pupae survived up to 5 days of immersion regardless of whether the water was aerated or anoxic. By contrast, fifth-instar larvae...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (23): 3754–3761.
Published: 1 December 2015
...Todd E. Gillis; Matthew D. Regan; Georgina K. Cox; Till S. Harter; Colin J. Brauner; Jeff G. Richards; Anthony P. Farrell ABSTRACT Pacific hagfish, Eptatretus stoutii , can recover from 36 h of anoxia at 10°C. Such anoxia tolerance demands the mobilization of anaerobic fuels and the removal...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (9): 1281–1289.
Published: 1 May 2015
... The authors declare no competing or financial interests. © 2015. Published by The Company of Biologists Ltd 2015 Anoxia Environmental stress Freeze-tolerance Hibernation Hypometabolism MicroRNA When challenged with severe environmental stresses that impede normal life, a variety...
Journal Articles
J Exp Biol (2014) 217 (3): 423–431.
Published: 1 February 2014
...Frank B. Jensen; Marie N. Hansen; Gabriella Montesanti; Tobias Wang Moderate elevations of nitrite and nitric oxide (NO) protect mammalian tissues against ischemia (anoxia)-reperfusion damage by inhibiting mitochondrial electron transport complexes and reducing the formation of reactive oxygen...
Journal Articles
J Exp Biol (2013) 216 (23): 4462–4472.
Published: 1 December 2013
...Christopher M. Wilson; Jonathan A. W. Stecyk; Christine S. Couturier; Göran E. Nilsson; Anthony P. Farrell SUMMARY The aneural heart of the Pacific hagfish, Eptatretus stoutii , varies heart rate fourfold during recovery from anoxia. Hyperpolarization-activated cyclic nucleotide-gated (HCN...
Journal Articles
J Exp Biol (2013) 216 (17): 3283–3293.
Published: 1 September 2013
...Gina L. J. Galli; Gigi Y. Lau; Jeffrey G. Richards SUMMARY The freshwater turtle Trachemys scripta can survive in the complete absence of O 2 (anoxia) for periods lasting several months. In mammals, anoxia leads to mitochondrial dysfunction, which culminates in cellular necrosis and apoptosis...
Journal Articles
J Exp Biol (2010) 213 (21): 3692–3698.
Published: 1 November 2010
...Georgina K. Cox; Erik Sandblom; Anthony P. Farrell SUMMARY In the absence of any previous study of the cardiac status of hagfishes during prolonged anoxia and because of their propensity for oxygen-depleted environments, the present study tested the hypothesis that the Pacific hagfish Eptatretus...
Journal Articles
J Exp Biol (2010) 213 (14): 2410–2416.
Published: 15 July 2010
... . Even though adult Drosophila can survive in 0% oxygen (anoxia) environments for hours, air with less than 2% oxygen rapidly induces locomotory failure resulting in an anoxic coma. We use natural genetic variation and an induced mutation in the foraging (for) gene, which encodes a Drosophila PKG...
Journal Articles
J Exp Biol (2010) 213 (9): 1529–1535.
Published: 1 May 2010
...-treated embryos had an elevated rotation rate over embryos in APW throughout the long-term exposure to hypoxia. Long-term anoxia also induced a transient increase in rotation rate in embryos exposed to APW or 5-HT. Rotation ceased in embryos exposed to APW by 13 h but persisted in 5-HT-treated embryos...
Journal Articles
J Exp Biol (2010) 213 (7): 1126–1132.
Published: 1 April 2010
... activity in invertebrate neurons, we conducted whole-cell recordings from neurons in the central ring ganglia of the anoxia-tolerant pond snail Lymnaea stagnalis during exposure to adenosine and pharmacological compounds known to modulate the type I subclass of adenosine receptors (A 1 R). Action potential...
Journal Articles
J Exp Biol (2010) 213 (3): 433–444.
Published: 1 February 2010
...) and intermittent anoxia on NO metabolism in eastern oysters, Crassostrea virginica . NOS activity was strongly suppressed by exposure to 50 μg l –1 Cd for 30 days (4.76 vs 1.19 pmol NO min –1 mg –1 protein in control and Cd-exposed oysters, respectively) and further decreased during anoxic exposure in Cd-exposed...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (1): 17–25.
Published: 1 January 2010
...C. J. Ramnanan; D. C. McMullen; A. Bielecki; K. B. Storey SUMMARY The freshwater turtle Trachemys scripta elegans naturally tolerates extended periods of anoxia during winter hibernation at the bottom of ice-locked ponds. Survival in this anoxic state is facilitated by a profound depression...
Journal Articles
J Exp Biol (2009) 212 (6): 785–789.
Published: 15 March 2009
...Alexander G. McLennan SUMMARY Encysted embryos of the brine shrimp Artemia franciscana are able to survive prolonged periods of anoxia even when fully hydrated. During this time there is no metabolism, raising the question of how embryos tolerate spontaneous, hydrolytic DNA damage...
Journal Articles
J Exp Biol (2009) 212 (6): 859–866.
Published: 15 March 2009
... anoxia anaerobic metabolism freeze survival Ectothermic animals inhabiting the temperate and polar regions have evolved physiological and behavioural strategies to endure occasional or permanent exposures to sub-zero temperatures. One such strategy is termed freeze-tolerance where a number...