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Keywords: calcium
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Journal Articles
J Exp Biol (2021) 224 (18): jeb242634.
Published: 22 September 2021
... to the effects of hypoxia as a result of an intracellular pathway involving ATP-dependent K + channels of the mitochondrial membrane. Excitotoxicity Retina Calcium Mitochondria mK ATP ATP-dependent K + channel Natural Sciences and Engineering Research Council of Canada http://dx.doi.org...
Journal Articles
J Exp Biol (2021) 224 (6): jeb237891.
Published: 15 March 2021
... eggs and obligate placentotrophy. One major event that favored the evolution of placentation was the reduction of the eggshell. As with all oviparous reptiles, lizard embryos obtain calcium from both the eggshell and egg yolk. Therefore, the loss of the eggshell likely imposes a constraint...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (14): jeb176909.
Published: 26 July 2018
... −1 , citral and carvone produced a significant reduction in EPSP amplitude, with citral producing the largest effect. Measurement of miniature EPSP amplitudes demonstrated that citral produced over a 50% reduction in transmitter release. Calcium imaging experiments showed that citral produced about...
Journal Articles
J Exp Biol (2017) 220 (23): 4418–4425.
Published: 1 December 2017
... sarcomeres by observing length changes of proximal and distal titin segments in the presence and absence of calcium. We labeled I-band titin with fluorescent F146 antibody in rabbit psoas myofibrils and tracked segmental elongations during passive (no calcium) and active (high calcium) stretch. Without...
Journal Articles
J Exp Biol (2017) 220 (22): 4234–4241.
Published: 15 November 2017
... picta bellii . Skinned multicellular preparations were exposed to six treatments with physiologically relevant levels of pH (7.4, 7.0, 6.6) and P i (3 and 8 mmol l −1 ). Each preparation was tested in a range of calcium concentrations (pCa 9.0–4.5) to determine the pCa–tension relationship for each...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (24): 3988–3995.
Published: 15 December 2016
...Raymond W. M. Kwong; Yusuke Kumai; Velislava Tzaneva; Estelle Azzi; Nina Hochhold; Cayleih Robertson; Bernd Pelster; Steve F. Perry ABSTRACT The present study investigated the potential role of hypoxia-inducible factor (HIF) in calcium homeostasis in developing zebrafish ( Danio rerio...
Journal Articles
J Exp Biol (2016) 219 (18): 2806–2808.
Published: 15 September 2016
... with thapsigargin reduced muscle fatigue resistance, but hypothyroidism had no effect on fatigue. Hence, thyroid hormone plays a role in determining isolated skeletal muscle mechanics, but its effects are more likely to be mediated by mechanisms other than affecting SERCA activity. Calcium Fatigue Force...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (21): 3487–3498.
Published: 1 November 2015
...Jenny Tynyakov; Shmuel Bentov; Shai Abehsera; Galit Yehezkel; Ziv Roth; Isam Khalaila; Simy Weil; Amir Berman; Inbar Plaschkes; Moshe Tom; Eliahu D. Aflalo; Amir Sagi ABSTRACT Some crustaceans possess exoskeletons that are reinforced with calcium carbonate. In the crayfish Cherax quadricarinatus...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (20): 3336–3343.
Published: 1 October 2015
...Wei Chen; Fei Zhao; Zhi Mei Tian; Han Xing Zhang; Dong Ruan; Yan Li; Shuang Wang; Chun Tian Zheng; Ying Cai Lin ABSTRACT The objective of this study was to determine the effects of dietary calcium deficiency on the process of shell formation. Four hundred and fifty female ducks ( Anas platyrhynchos...
Journal Articles
J Exp Biol (2014) 217 (18): 3346–3355.
Published: 15 September 2014
...David James Dukoff; David William Hogg; Peter John Hawrysh; Leslie Thomas Buck Oxygen deprivation triggers excitotoxic cell death in mammal neurons through excessive calcium loading via over-activation of N -methyl- d -aspartate (NMDA) and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid...
Journal Articles
J Exp Biol (2014) 217 (7): 1180–1186.
Published: 1 April 2014
...Monica D. Poteat; David B. Buchwalter Calcium sequestration in the hypo-osmotic freshwater environment is imperative in maintaining calcium homeostasis in freshwater aquatic organisms. This uptake process is reported to have the unintended consequence of potentially toxic heavy metal (Cd, Zn...
Journal Articles
J Exp Biol (2014) 217 (1): 119–128.
Published: 1 January 2014
... in organismal stress tolerance cannot be underestimated. At a molecular level, multiple cell-specific signalling pathways including cyclic cAMP, cyclic cGMP and calcium modulate tissue, and hence, organismal responses to stress. Thus, epithelial cell-specific signal transduction can be usefully studied...
Journal Articles
J Exp Biol (2013) 216 (9): 1616–1623.
Published: 1 May 2013
... ). MRBAYES: Bayesian inference of phylogenetic trees . Bioinformatics   17 , 754 - 755 . Jackson   D. C. ( 2004 ). Surviving extreme lactic acidosis: the role of calcium lactate formation in the anoxic turtle . Respir. Physiol. Neurobiol.   144 , 173 - 178 . Jackson   D. C. , Ultsch...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (11): 1965–1974.
Published: 1 June 2012
... of animals, while behaviour determines which environments are encountered. Here, we identified changes in the behavioural selection of external salinity in Fundulus heteroclitus , an estuarine teleost, as a consequence of digesting a meal. Fish that consumed high levels of dietary calcium exhibited a higher...
Journal Articles
J Exp Biol (2011) 214 (24): 4179–4185.
Published: 15 December 2011
... levels: control, exposure to low calcium availability, predator kairomone exposure during training or a combination of low calcium and predator kairomones. Snails isolated during training alone demonstrated no difference in memory formation compared with the snails trained in groups. Maintaining snails...
Journal Articles
J Exp Biol (2011) 214 (18): 2999–3004.
Published: 15 September 2011
...James R. Stewart; Tom W. Ecay; Benoit Heulin; Santiago P. Fregoso; Brent J. Linville SUMMARY The eggshell of oviparous lizards is a significant source of calcium for embryos, whereas the eggshell of viviparous lizards, when present, contains little calcium. In view of the potential cost...
Journal Articles
J Exp Biol (2011) 214 (15): 2528–2533.
Published: 1 August 2011
.... The osphradium is an external sensory organ that demonstrates electrophysiological responses to a variety of external chemical stimuli. We examined the role, if any, played by the osphradium in sensing two environmental stressors, crowding and low environmental calcium, both known to block LTM in intact animals...
Journal Articles
J Exp Biol (2011) 214 (6): 996–1006.
Published: 15 March 2011
...Peter J. Allen; Dirk Weihrauch; Vanessa Grandmaison; Patricia Dasiewicz; Stephan J. Peake; W. Gary Anderson Calcium metabolism and mRNA levels of the epithelial calcium channel (ECaC) were examined in a freshwater cartilaginous fish, the lake sturgeon Acipenser fulvescens. Lake sturgeon were...
Journal Articles
J Exp Biol (2011) 214 (2): 263–274.
Published: 15 January 2011
... . Cannell M. B. , Allen D. G. ( 1984 ). Model of calcium movements during activation in the sarcomere of frog skeletal muscle . Biophys. J. 45 , 913 - 925 . Cleveland G. G. , Chang D. C. , Hazlewood C. F. , Rorschach H. E. ( 1976 ). Nuclear magnetic resonance...
Journal Articles
J Exp Biol (2009) 212 (16): 2520–2524.
Published: 15 August 2009
...James R. Stewart; Tom W. Ecay; Benoit Heulin SUMMARY Embryos of oviparous squamate reptiles typically obtain calcium from both yolk and eggshell but differ from other oviparous amniotes (turtles, birds and crocodilians) because they are heavily dependent on calcium-rich yolk. Eggs of viviparous...