Results 41 to 50 of about 9,198 (161)

Changes in electrical potential difference and sodium–potassium ATPase of canine mucosa after jejunal–ileal bypass surgery

, 1983
Changes in electrical potential difference and sodium–potassium ATPase activity of rectal mucosa in dogs were examined before and after jejunal–ileal bypass surgery. The potential difference in the postoperative period was significantly higher (P < 0.
J. P. Shoenut, G. R. Grahame, G. P. Sharma, S. Takeo   +3 more
core   +1 more source

Cellular mechanisms of radiation‐induced myocyte dysfunction: effects on calcium handling, ion channel regulation and mitochondrial energetics

The Journal of Physiology, EarlyView.
Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley   +1 more source

Human‐derived cardiac‐neural microtissues reveal catecholaminergic polymorphic ventricular tachycardia is also a disease of the sympathetic neuron

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic diagram illustrating the proposed pathway in which regulatory defects might occur in sympathetic neurons derived from hiPSC in catecholaminergic polymorphic ventricular tachycardia (CPVT). Specifically, enhanced calcium transients appeared to derive from three sources: enhanced membrane excitability (due to loss of ...
Ni Li, Chenchen Zhang, Mengying Xu, YoonYoung Choi, Davi Sidarta‐Oliveira, Ruirui Dong, Xinyu Hu, Enrique M. Toledo, Cesar A. Prada‐Medina, Finbar Argus, Kun Liu, Mingyu Li, Linna Zhou, Hagan Bayley, Corey Smith, Chris Denning, Ana I. Domingos, Guoliang Hao, Dan Li, David J. Paterson   +19 more
wiley   +1 more source

Extracellular ionic concentration modulates arrhythmias in a simulated population of human ventricular myocytes with long QT syndrome type 3

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic illustrating the in silico study pipeline. A total of 50,000 virtual myocytes were generated, which were then filtered to 7093 myocytes that fit experimentally constrained biomarkers for physiological electrical and calcium behaviour under wild‐type conditions.
Katherine Flannery, Jacob A. Miller, Steven Poelzing, Seth H. Weinberg   +3 more
wiley   +1 more source

Coordinated regulation of PIEZO2 by alternative splicing, post‐translational modification, membrane trafficking and protein partners

The Journal of Physiology, EarlyView.
Abstract figure legend Regulatory mechanisms such as alternative splicing, post‐translational modification, membrane trafficking, and protein interactions control channel gating, membrane abundance, and overall activity of PIEZO2. Proper regulation supports PIEZO2‐dependent proprioceptive, somatosensory, nociceptive, pruriceptive and interoceptive ...
Eunice I. Oribamise, Qinglu Li, Mary G. Garry   +2 more
wiley   +1 more source

Age‐ and sex‐specific modulation of human cardiac electrophysiology by doxorubicin

The Journal of Physiology, EarlyView.
Abstract figure legend DOX differentially impacts cardiac electrophysiology based on sex and age. Sex differences were primarily observed among younger hearts, where action potential duration (APD) prolongation was observed in females, but not in males. Created using BioRender. George, S. (2026) https://BioRender.com/wresf1k Abstract Acute doxorubicin (
Sharon A. George, Amber V. Mills, Erin O'Neill, Sofian N. Obaid, Igor R. Efimov, Tatiana Efimova   +5 more
wiley   +1 more source

The secretory response of parathyroid hormone to acute hypocalcemia in vivo is independent of parathyroid glandular sodium/potassium-ATPase activity

, 2011
The involvement of sodium/potassium-ATPase in regulating parathyroid hormone (PTH) secretion is inferred from in vitro studies. Recently, the α-klotho-dependent rapid recruitment of this ATPase to the parathyroid cell plasma membrane in response to low ...
Lewin, Ewa, Giedre Martuseviciene, Ewa Lewin, Clausen, Torben, Olgaard, Klaus, Hofman-Bang, Jacob, Jacob Hofman-Bang, Martuseviciene, Giedre, Klaus Olgaard, Torben Clausen   +9 more
core   +1 more source

Biosynthetic pathway of mitochondrial ATPase subunit 9 in Neurospora crassa [PDF]

, 1983
Subunit 9 of mitochondrial ATPase (Su9) is synthesized in reticulocyte lysates programmed with Neurospora poly A-RNA, and in a Neurospora cell free system as a precursor with a higher apparent molecular weight than the mature protein (Mr 16,400 vs.
W Neupert, R Zimmermann, Zimmermann, Richard, Neupert, Walter, Hennig, Bernd, Schmidt, Bernd, B Schmidt, B Hennig   +7 more
core   +1 more source

Insect‐resistant soybean genotypes accumulate rutin and its O‐methylated derivative narcissin, a more potent flavonol targeting Anticarsia gemmatalis digestive and detoxification enzymes and reducing larval survival

Journal of the Science of Food and Agriculture, Volume 106, Issue 10, Page 5921-5933, 15 August 2026.
Abstract BACKGROUND Soybean underpins Brazil's agricultural, yet its sustainability is threatened by lepidopteran pests such as Anticarsia gemmatalis. Although insect‐resistant cultivars have long been associated with the constitutive accumulation of quercetin‐derived flavonols, the biochemical mechanisms underlying this resistance remain poorly ...
Jessica Nunes de Assis, Valquira Joana Medina Pinheiro, Jodieh Oliveira Santana Varejão, Ian de Paula Alves Pinto, André Luiz Lourenção, Nathália Silva Oliveira, Giovanna Cassia Mendes Moraes, Eduardo Vinícius Vieira Varejão, Maria Goreti de Almeida Oliveira, Humberto Josué de Oliveira Ramos   +9 more
wiley   +1 more source

Characterisation of the Na, K pump current in atrial cells from patients with and without chronic atrial fibrillation [PDF]

, 2003
<b>Objective:</b> To assess the contribution of the Na, K pump current (<i>I</i>_p) to the action potential duration (APD) and effective refractory period (ERP) in human atrial cells, and to investigate ...
Kane, K.A., Kane, Kathleen, Rankin, A.C., Workman, Anthony J., Workman, A.J., Rankin, Andrew C.   +5 more
core   +1 more source