In the present study, the signalling network behind the hypertonic activation of cation channels in HeLa cells was analysed by use of various inhibitors. Channel activation was monitored in whole-cell patch-clamp recordings, whereas the role of the channel in cell volume regulation was determined by electronic cell sizing. It is found that channel activation and volume control probably employs tyrosine kinases, G-proteins, PLC, PKC and p38MAP kinase, and that the process appears to depend on an intact actin skeleton. In contrast, RhoA, PI 3-kinase, ERK 1/2, JNK 1/2 as well as the exocytotic insertion of channels into the plasma membrane are likely not part of the signalling machinery.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000104155 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Structural basis for human NKCC1 inhibition by loop diuretic drugs.
EMBO J
January 2025
Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, 84112-5650, USA.
Na-K-Cl cotransporters functions as an anion importers, regulating trans-epithelial chloride secretion, cell volume, and renal salt reabsorption. Loop diuretics, including furosemide, bumetanide, and torsemide, antagonize both NKCC1 and NKCC2, and are first-line medicines for the treatment of edema and hypertension. NKCC1 activation by the molecular crowding sensing WNK kinases is critical if cells are to combat shrinkage during hypertonic stress; however, how phosphorylation accelerates NKCC1 ion transport remains unclear.
View Article and Find Full Text PDFObjective: Aim: To investigate the effects of exercise training on heart rate and blood pressure in soccer players of different skill levels.
Patients And Methods: Materials and Methods: 693 soccer players with different sports qualifications were studied. Heart rate (HR) and blood pressure (BP) were measured at rest at the beginning of the preparatory phase of the training cycle.
Segment specific loss of NFAT5 function in the kidneys is sufficient to induce a global kidney injury like phenotype.
FASEB J
January 2025
Department of Medicine, Hematology and Oncology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
Nuclear factor of activated T-cells 5 (NFAT5) is a transcription factor known for its role in osmotic stress adaptation in the renal inner medulla, due to the osmotic gradient that is generated between the renal cortex and renal inner medulla. However, its broader implications in kidney injury and chronic kidney disease (CKD) are less understood. Here we used two different Cre deleter mice (Ksp1.
View Article and Find Full Text PDFNew formulation of ibuprofen-arginate reduces oxidative stress and prevents macrophage polarization toward M1 phenotype.
Biomed Pharmacother
January 2025
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Argentina; Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Instituto de Bioquímica y Biotecnología, Avda. Libertador 80, Mendoza CP5500, Argentina. Electronic address:
A hypertonic solution of Ibuprofen (Ibu) was designed to nebulize, associating a low concentration of Ibu with L-Arginine (AR), to increase solubility and serve as a nitric oxide donor. To provide preclinical research human bronchial epithelial cells derived from a cystic fibrosis patient homozygous for the ΔF508 CFTR mutation (CFBE41o-) and mouse RAW 264.7 macrophages were pre-treated with Ibu (10-100 μM), AR (20 and 200 μM), or the combination Ibu-AR (10-100 μM).
View Article and Find Full Text PDFFrom Crisis to Cure: The Resilient Recovery of a Patient With Tetanus.
Cureus
December 2024
Internal Medicine, Madras Medical College and Rajiv Gandhi Government General Hospital, Chennai, IND.
Tetanus is a severe neurological condition triggered by the toxin of , resulting in extreme muscle stiffness and spasms. Although vaccination can prevent it, without treatment, tetanus carries a high risk of death due to respiratory failure and autonomic disturbances. This case report describes a 24-year-old Indian male who developed tetanus after branding (a traditional procedure for jaundice in rural India) on his wrist.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!