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Keywords: membrane potential
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Journal Articles
Journal Articles
J Exp Biol (2021) 224 (10): jeb238147.
Published: 28 May 2021
... by 10% with the onset of anoxia in goldfish telencephalic brain slices. Employing whole-cell patch-clamp recording, we found that, similar to severe hypoxia, the ROS scavengers N -acetyl cysteine (NAC) and MitoTEMPO, added during normoxic periods, depolarized membrane potential (severe hypoxia −73.6...
Journal Articles
J Exp Biol (2018) 221 (4): jeb172213.
Published: 14 February 2018
... and an upregulation of oxidative phosphorylation efficiency. The aim of this study was to decipher mechanisms underlying the increased mitochondrial coupling efficiency reported in fasted birds. Mitochondrial oxidative phosphorylation activity, efficiency and membrane potential were measured in mitochondria isolated...
Journal Articles
J Exp Biol (2017) 220 (4): 695–704.
Published: 15 February 2017
..., we recorded the electrical activities of both excitatory (pyramidal) and inhibitory (stellate) neurons. With anoxia, membrane potential ( V m ) depolarized in both cell types from −72.2 mV to −57.7 mV and from −64.5 mV to −46.8 mV in pyramidal and stellate neurons, respectively. While pyramidal cells...
Journal Articles
J Exp Biol (2016) 219 (16): 2504–2513.
Published: 15 August 2016
... of compatible osmolytes improve osmotic balance and cold tolerance in Drosophila . Insect Chill tolerance Osmotic balance Membrane potential Chill injury NMR Metabolomics Some cold-adapted insect species have evolved the ability to either tolerate or avoid ice crystal formation...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2005) 208 (13): 2569–2579.
Published: 1 July 2005
... consumption can account for maintenance of the transmembrane H + gradient without the imposition of cell surface H + barriers. * Author for correspondence (e-mail: mmesserli@mbl.edu ) 25 4 2005 © The Company of Biologists Limited 2005 2005 acidophile cytosolic pH membrane potential...
Journal Articles
Journal Articles
J Exp Biol (2003) 206 (6): 949–957.
Published: 15 March 2003
...U. I. M. Wiehart; S. W. Nicolson; E. Van Kerkhove SUMMARY Malpighian tubules of the mealworm Tenebrio molitor were isolated for intracellular measurement of basolateral ( V bl ) and,indirectly, apical ( V ap ) membrane potentials. In control Ringer (50 mmol l -1 K + , 140 mmol l -1 Na + ), V bl...
Journal Articles
Journal Articles
J Exp Biol (2001) 204 (15): 2691–2698.
Published: 1 August 2001
... ) was significantly lower in ammonia-exposed animals, leading to a profound reduction in factorial aerobic scope (AMR/MMR). Reduced U crit was also linked to a reduction in maximum tailbeat frequency. Calculation of membrane potentials ( E M ) in the white muscle of fish swum to U crit revealed a significant partial...
Journal Articles
J Exp Biol (2000) 203 (4): 757–764.
Published: 15 February 2000
... were performed to elucidate the mechanism for this behaviour. No members of this class have previously been studied using electrophysiological techniques. The ciliates were maintained in culture and fed on the planctonic alga Rhodomonas minuta . The membrane potential showed spontaneous shifts between...
Journal Articles
J Exp Biol (2000) 203 (1): 51–59.
Published: 1 January 2000
..., the transmembrane proton concentration gradient (ΔpH) and the membrane potential. The two components were considered to be not only thermodynamically but also kinetically equivalent, since the chloroplast ATP synthase appeared to operate on ΔpH only. Recent experiments demonstrate, however, that the chloroplast ATP...
Journal Articles
J Exp Biol (1999) 202 (4): 475–483.
Published: 15 February 1999
... increase the probability of finding a sexual partner for pair formation (conjugation). The usual pattern of rhythmic, spontaneous depolarizations controlling the walking rhythm is absent in nonself-pheromone-stimulated cells. The remaining depolarizations arise from a 4 mV hyperpolarized membrane potential...
Journal Articles
Journal Articles
J Exp Biol (1991) 161 (1): 239–255.
Published: 1 November 1991
... by Company of Biologists 1991 membrane potential voltage-clamp cirral movement Stylonychia mytilus The ciliary motor response in ciliates is closely coupled to membrane potential changes ( Machemer, 1986 , 1990 ). In Paramecium and Stylonychia , it has been established that membrane...
Journal Articles
J Exp Biol (1989) 144 (1): 43–51.
Published: 1 July 1989
... as light intensity was increased and the cells almost stopped at the intensity at which they showed the maximum degree of photoaccumulation. When the intensity was increased further, the avoiding reaction was frequently observed. Step increases in the light intensity depolarized the membrane potential...