Results 41 to 50 of about 117,758 (315)

Efeito do etanol e do peróxido de hidrogênio intragástrico sobre a mucosa gástrica de rã (Rana catesbeiana, SHAW) Effect of intragastric ethanol and hydrogen peroxide in frog gastric mucosa (Rana catesbeiana, SHAW)

Brazilian Archives of Biology and Technology, 1998
This work investigated the frog gastric mucosa response to hydrogen peroxide and ethanol induced injury. Acid and mucus secretion were estimated "in vitro" in control animals with intragastric absolute ethanol (1ml/30min.
Hidê Virgínia Estivallet, Maria Inês Rodrigues, Norma Possa Marroni   +2 more
doaj   +1 more source

Electrical Control of the Transduction Channels’ Gating Force in Mechanosensory Hair Cells

Advanced Science, EarlyView.
The inner ear's hair cells rely on mechanosensitive ion channels to convert vibrations of their hair‐bundle into electrical signals. We show that varying the electrical potential (U) across the sensory epithelium modulates a key determinant of mechanosensitivity—the gating force (FG)—by modulating the gating swing (d), ranging from the size of the ...
Achille Joliot, Laure Stickel, Pascal Martin   +2 more
wiley   +1 more source

Rhyme in dróttkvætt, from Old Germanic Inheritance to Contemporary Poetic Ecology III: The Old Norse Poetic Ecology

Studia Metrica et Poetica
This paper is the third in a three-part series that develops a model for the background of rhyme in Old Norse dróttkvætt poetry as a formalization of the same form of rhyme found across Old Germanic poetries.
Frog
doaj   +1 more source

Anuran accents: Continental‐scale citizen science data reveal spatial and temporal patterns of call variability

Ecology and Evolution, 2020
Many animals rely on vocal communication for mating advertisement, territorial displays, and warning calls. Advertisement calls are species‐specific, serve as a premating isolation mechanism, and reinforce species boundaries.
Savannah J. Weaver, Corey T. Callaghan, Jodi J. L. Rowley   +2 more
doaj   +1 more source

Frog eat frog: exploring variables influencing anurophagy

PeerJ, 2015
Background. Frogs are generalist predators of a wide range of typically small prey items. But descriptions of dietary items regularly include other anurans, such that frogs are considered to be among the most important of anuran predators. However, the only existing hypothesis for the inclusion of anurans in the diet of post-metamorphic frogs ...
Measey, G. John, Vimercati, Giovanni, De Villiers, F. Andre, Mokhatla, Mohlamatsane M., Davies, Sarah J., Edwards, Shelley, Altwegg, Res   +6 more
openaire   +5 more sources

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

Advanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao, Ata Golparvar, Mohammad Javad Bathaei, Filipe Arroyo Cardoso, Clementine M. Boutry   +4 more
wiley   +1 more source

Biodegradable Adhesive Systems for Bio‐Integrated Applications

Advanced Science, EarlyView.
Biodegradable adhesives provide temporary yet reliable adhesion while degrading into safe, non‐toxic by‐products under physiological or environmental conditions. This review summarizes recent developments in physical and chemical adhesion mechanisms—including hydrogen bonding, catechol chemistry, amine‐carboxyl coupling, and emerging diazirine and urea
Won Bae Han, Sungkeun Han, Prashant Shivaji Shewale, Hyewon Cho, Li‐Hyun Kim, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +6 more
wiley   +1 more source

Identification and Characterization of an In Silico Designed Membrane‐Active Peptide with Antiviral Properties

Advanced Science, EarlyView.
An evolutionary molecular dynamics platform is used to design P1.6, a membrane‐active peptide that senses lipid packing defects in viral envelopes. P1.6 adopts a stabilized α‐helical structure upon membrane contact, disrupts virus‐like liposomes, and damages HIV‐1 particles.
Pascal von Maltitz, Niek van Hilten, Tatjana Weil, Thunchanok Thummaraj, Jeroen Methorst, Dennis Aschmann, Alexander Kros, Clarissa Read, Jasmina Gačanin, Herre Jelger Risselada, Jan Münch   +10 more
wiley   +1 more source

High Time Resolution Analysis of Voltage-Dependent and Voltage-Independent Calcium Sparks in Frog Skeletal Muscle Fibers

Frontiers in Physiology, 2020
In amphibian skeletal muscle calcium (Ca2+) sparks occur both as voltage-dependent and voltage-independent ligand-activated release events. However, whether their properties and their origin show similarities are still in debate. Elevated K+, constant Cl–
Henrietta Cserne Szappanos, Henrietta Cserne Szappanos, János Vincze, Dóra Bodnár, Beatrix Dienes, Martin F. Schneider, László Csernoch, Péter Szentesi   +7 more
doaj   +1 more source

Mechanism‐Driven Screening of Membrane‐Targeting and Pore‐Forming Antimicrobial Peptides

Advanced Science, EarlyView.
To combat antibiotic resistance, this study employs mechanism‐driven screening with machine learning to identify pore‐forming antimicrobial peptides from amphibian and human metaproteomes. Seven peptides are validated, showing minimal toxicity and membrane disruption.
Jiaxuan Li, Chenguang Yang, Ruihan Dong, Juan Francisco Bada Juarez, Lei Wang, Maximilian Emanuel Wettstein, Dali Wang, Chan Cao, Ying Lu, Chen Song   +9 more
wiley   +1 more source