Results 31 to 40 of about 2,440,422 (308)

How DASPMI reveals mitochondrial membrane potential : fluorescence decay kinetics and steady-state anisotropy in living cells

, 2008
Spectroscopic responses of the potentiometric probe 2-(4-(dimethylamino)styryl)-1-methylpyridinium iodide (DASPMI) were investigated in living cells by means of a time- and space-correlated single photon counting technique.
Ramadass, Radhan, Bereiter-Hahn, Jürgen
core   +1 more source

High Variability in Human Sperm Membrane Potential over Time Can Limit Its Reliability as a Predictor in ART Outcomes

Biology
Sperm membrane potential (Em) hyperpolarization during capacitation is a functional hallmark of fertilizing ability and has been proposed as a predictive biomarker for conventional in vitro fertilization (IVF) success.
Tomás J. Steeman, Carolina Baro Graf, Analia G. Novero, Mariano G. Buffone, Dario Krapf   +4 more
doaj   +1 more source

MODULATION OF DEFENSIVE REFLEX CONDITIONING IN SNAILS BY SEROTONIN

Frontiers in Behavioral Neuroscience, 2015
We studied the role of serotonin in the mechanisms of learning in terrestrial snails. To produce a serotonin deficit, the neurotoxic analogues of serotonin, 5,6- or 5,7-dihydroxytryptamine (5,6/5,7-DHT) were used.
Vyatcheslav V Andrianov, Vyatcheslav V Andrianov, Tatiana Kh Bogodvid, Tatiana Kh Bogodvid, Irina B Deryabina, Aleksandra N Golovchenko, Lyudmila N Muranova, Roza R Tagirova, Alia Kh Vinarskaya, Khalil L Gainutdinov, Khalil L Gainutdinov   +10 more
doaj   +1 more source

Myography of isolated blood vessels: Considerations for experimental design and combination with supplementary techniques

Frontiers in Physiology, 2023
The study of the mechanisms of regulation of vascular tone is an urgent task of modern science, since diseases of the cardiovascular system remain the main cause of reduction in the quality of life and mortality of the population.
Rudolf Schubert, Dina Gaynullina, Anastasia Shvetsova, Olga S. Tarasova, Olga S. Tarasova   +4 more
doaj   +1 more source

Noradrenaline Modulates the Membrane Potential and Holding Current of Medial Prefrontal Cortex Pyramidal Neurons via β1-Adrenergic Receptors and HCN Channels

Frontiers in Cellular Neuroscience, 2017
The medial prefrontal cortex (mPFC) receives dense noradrenergic projections from the locus coeruleus. Adrenergic innervation of mPFC pyramidal neurons plays an essential role in both physiology (control of memory formation, attention, working memory ...
Katarzyna Grzelka, Przemysław Kurowski, Maciej Gawlak, Paweł Szulczyk   +3 more
doaj   +1 more source

Polyvinylidene fluoride membrane modification via oxidant-induced dopamine polymerization for sustainable direct-contact membrane distillation

, 2018
Porous hydrophobic polyvinylidene fluoride (PVDF) membranes have been extensively used in direct-contact membrane distillation (DCMD) processes. However, these PVDF membranes are vulnerable to membrane fouling and pore wetting in low surface tension ...
Chandresh Malde, Rong Wang, Wang, Rong, Zhao, Shanshan, Chew, Nick Guan Pin, Shanshan Zhao, Malde, Chandresh, Nick Guan Pin Chew   +7 more
core   +1 more source

Ion channels to inactivate neurons in Drosophila

Frontiers in Molecular Neuroscience, 2009
Ion channels are the determinants of excitability; therefore, manipulation of their levels and properties provides an opportunity for the investigator to modulate neuronal and circuit function.
James J L Hodge
doaj   +1 more source

Joule heating involving ion currents through channel proteins

Biophysics and Physicobiology, 2023
Ion currents associated with channel proteins in the presence of membrane potential are ubiquitous in cellular and organelle membranes. When an ion current occurs through a channel protein, Joule heating should occur. However, this Joule heating seems to
Tetsuichi Wazawa, Takeharu Nagai
doaj   +1 more source

Membrane potential fluctuations determine the precision of spike timing and synchronous activity: a model study

, 2001
Kretzberg J, Egelhaaf M, Warzecha A-K. Membrane potential fluctuations determine the precision of spike timing and synchronous activity: a model study. Journal of computational neuroscience.
Egelhaaf, Martin ; https://orcid.org/, Warzecha, Anne-Kathrin, Kretzberg, Jutta   +2 more
core   +1 more source

The electrophoretic membrane contactor: A mass-transfer-based methodology applied to the separation of whey proteins [PDF]

, 2011
In the electrophoretic membrane contactor (EMC), a porous membrane is used to establish a contact across two flowing liquids between which an electrically driven mass transfer takes places.
Roux-de Balmann, Hélène, Hélène Roux-de Balmann, Galier, Sylvain, Sylvain Galier   +3 more
core   +1 more source