Results 41 to 50 of about 14,693,728 (394)

Membrane Potential Assessment by Fluorimetry as a Predictor Tool of Human Sperm Fertilizing Capacity

Frontiers in Cell and Developmental Biology, 2020
Mammalian sperm acquire the ability to fertilize eggs by undergoing a process known as capacitation. Capacitation is triggered as the sperm travels through the female reproductive tract.
Carolina Baro Graf, Carolina Baro Graf, Carla Ritagliati, Valentina Torres-Monserrat, Cintia Stival, Carlos Carizza, Mariano G. Buffone, Dario Krapf, Dario Krapf   +8 more
doaj   +1 more source

Calcium‐ and voltage‐driven atrial alternans: Insight from [Ca]i and Vm asynchrony

Physiological Reports, 2023
Cardiac alternans is defined as beat‐to‐beat alternations in contraction strength, action potential duration (APD), and Ca transient (CaT) amplitude. Cardiac excitation–contraction coupling relies on the activity of two bidirectionally coupled excitable ...
G. Kanaporis, E. Martinez‐Hernandez, L. A. Blatter   +2 more
doaj   +1 more source

Adenosine, ‘pertussis-sensitive’ G-proteins, and K+ conductance in central mammalian neurones under energy deprivation [PDF]

, 1989
There is a striking similarity between the effects of adenosine and of hypoxia or glucose depletion on membrane potential and conductance of hippocampal neurones in tissue slices of rat brain.
A. Spuler, Aghajanian, Andrade, Deuticke, Fredholm, Fujiwara, Glötzner, Godfraind, Greene, Hagberg, Hansen, Isenberg, P. Grafe, Segal, Siggins, Spuler   +15 more
core   +1 more source

ASCs-Exosomes Recover Coupling Efficiency and Mitochondrial Membrane Potential in an in vitro Model of ALS

Frontiers in Neuroscience, 2019
The amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by motoneurons death. Mutations in the superoxide dismutase 1 (SOD1) protein have been identified to be related to the disease.
Elisa Calabria, Ilaria Scambi, Roberta Bonafede, Lorenzo Schiaffino, Daniele Peroni, Valentina Potrich, Carlo Capelli, Carlo Capelli, Federico Schena, Raffaella Mariotti   +9 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

Microbe-Derived Indole Metabolite Demonstrates Potent Multidrug Efflux Pump Inhibition in Staphylococcus aureus

Frontiers in Microbiology, 2019
Efflux pumps are always at the forefront of bacterial multidrug resistance and account for the failure of antibiotics. The present study explored the potential of 2-(2-Aminophenyl) indole (RP2), an efflux pump inhibitor (EPI) isolated from the soil ...
Rushikesh Tambat, Manoj Jangra, Nisha Mahey, Nishtha Chandal, Manpreet Kaur, Surbhi Chaudhary, Dipesh Kumar Verma, Krishan Gopal Thakur, Manoj Raje, Sanjay Jachak, Neeraj Khatri, Hemraj Nandanwar   +11 more
doaj   +1 more source

Calcium Signaling in Plant-Insect Interactions

Plants, 2022
In plant–insect interactions, calcium (Ca2+) variations are among the earliest events associated with the plant perception of biotic stress. Upon herbivory, Ca2+ waves travel long distances to transmit and convert the local signal to a systemic defense ...
Ambra S. Parmagnani, Massimo E. Maffei
doaj   +1 more source

Modulatory Effects of Acidic pH and Membrane Potential on the Adsorption of pH-Sensitive Peptides to Anionic Lipid Membrane

Membranes, 2021
Anionic lipid membrane electrostatic potential and solution pH can influence cationic peptide adsorption to these bilayers, especially those containing simultaneously acid and basic residues.
Dayane dos Santos Alvares, Ingrid Bernardes Santana Martins, Taisa Giordano Viegas, Mario Sergio Palma, Alexandre Suman de Araujo, Sidney Jurado de Carvalho, João Ruggiero Neto   +6 more
doaj   +1 more source

Outer membrane protein A (OmpA) as a potential therapeutic target for Acinetobacter baumannii infection

Journal of Biomedical Sciences, 2020
Acinetobacter baumannii (A. baumannii) is an important opportunistic pathogen causing serious nosocomial infections, which is considered as the most threatening Gram-negative bacteria (GNB).
D. Nie, Yue Hu, Zhou Chen, Mingkai Li, Z. Hou, Xiaoxing Luo, X. Mao, X. Xue   +7 more
semanticscholar   +1 more source

MEMBRANE POTENTIALS AND CATAPHORETIC POTENTIALS OF PROTEINS [PDF]

Journal of General Physiology, 1923
1. It has been shown in preceding publications that the membrane potentials of protein solutions or gels are determined by differences in the concentration of a common ion (e.g. hydrogen ion) inside a protein solution or protein gel and an outside aqueous solution free from protein, and that the membrane potentials can be calculated with a good degree ...
openaire   +3 more sources