Results 1 to 10 of about 3,357,590 (333)

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

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   +2 more sources

The Biphasic Effect of Lipopolysaccharide on Membrane Potential [PDF]

Membranes
Lipopolysaccharide (LPS) from certain strains of Gram-negative bacteria can induce a rapid (
Maria E. Hadjisavva, Robin L. Cooper
doaj   +2 more sources

Membrane dipole potentials

Biophysical Journal, 1968
Howard C. Berg
openalex   +4 more sources

Use of FRET-Sensor ‘Mermaid’ to Detect Subtle Changes in Membrane Potential of Primary Mouse PASMCs [PDF]

Cells
Subtle changes in the membrane potential of pulmonary arterial smooth muscle cells (PASMCs) are pivotal for controlling pulmonary vascular tone, e.g., for initiating Hypoxic Pulmonary Vasoconstriction, a vital mechanism of the pulmonary circulation.
Ruth C. Dartsch, Simone Kraut, Tim Mayer, Andreas Gabel, Alexander Dietrich, Norbert Weissmann, Beate Fuchs, Fenja Knoepp   +7 more
doaj   +2 more sources

Analyzing the effect of ion binding to the membrane-surface on regulating the light-induced transthylakoid electric potential (ΔΨm)

Frontiers in Plant Science, 2022
The transthylakoid membrane potential (ΔΨm) is essential because it can drive the ATP synthesis through the CF0–CF1 type of ATP-synthase in chloroplasts as an energetic equivalent similar to ΔpH.
Hui Lyu, Dušan Lazár
doaj   +1 more source

A Novel Cryptic Clostridial Peptide That Kills Bacteria by a Cell Membrane Permeabilization Mechanism

Microbiology Spectrum, 2022
This work reports detailed characteristics of the antimicrobial peptide Intestinalin (P30), which is derived from the LysC enzyme of Clostridium intestinale strain URNW. The peptide shows a broader antibacterial spectrum than the parental enzyme, showing
Monika Szadkowska, Michal Olewniczak, Anna Kloska, Elzbieta Jankowska, Malgorzata Kapusta, Bartosz Rybak, Dariusz Wyrzykowski, Wioletta Zmudzinska, Artur Gieldon, Aleksandra Kocot, Anna-Karina Kaczorowska, Lukasz Nierzwicki, Joanna Makowska, Tadeusz Kaczorowski, Magdalena Plotka   +14 more
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Different resting membrane potentials in posterior parietal cortex and prefrontal cortex in the view of recurrent synaptic strengths and neural network dynamics

Frontiers in Cellular Neuroscience, 2023
In this study, we introduce the importance of elevated membrane potentials (MPs) in the prefrontal cortex (PFC) compared to that in the posterior parietal cortex (PPC), based on new observations of different MP levels in these areas. Through experimental
Minsu Yoo, Yoon-Sil Yang, Jong-Cheol Rah, Jong-Cheol Rah, Joon Ho Choi   +4 more
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Effects of Matrix pH on Spontaneous Transient Depolarization and Reactive Oxygen Species Production in Mitochondria

Frontiers in Cell and Developmental Biology, 2021
Reactive oxygen species (ROS) oxidize surrounding molecules and thus impair their functions. Since mitochondria are a major source of ROS, suppression of ROS overproduction in the mitochondria is important for cells.
Jannatul Aklima, Jannatul Aklima, Takumi Onojima, Sawako Kimura, Kanji Umiuchi, Takahiro Shibata, Yusho Kuraoka, Yoshiki Oie, Yoshiki Suganuma, Yoshihiro Ohta   +9 more
doaj   +1 more source

Light/Clock Influences Membrane Potential Dynamics to Regulate Sleep States

Frontiers in Neurology, 2021
The circadian rhythm is a fundamental process that regulates the sleep–wake cycle. This rhythm is regulated by core clock genes that oscillate to create a physiological rhythm of circadian neuronal activity.
Masashi Tabuchi, Kaylynn E. Coates, Oscar B. Bautista, Lauren H. Zukowski   +3 more
doaj   +1 more source

Deciphering the Role of Ion Channels in Early Defense Signaling against Herbivorous Insects

Cells, 2021
Plants and insect herbivores are in a relentless battle to outwit each other. Plants have evolved various strategies to detect herbivores and mount an effective defense system against them.
Akanksha Gandhi, Rupesh Kariyat, Amaravadhi Harikishore, Marzieh Ayati, Anirban Bhunia, Nirakar Sahoo   +5 more
doaj   +1 more source