Results 21 to 30 of about 567,581 (297)

Ca2+ Dependence of the Ca2+-selective TRPV6 Channel [PDF]

Journal of Biological Chemistry, 2004
Microfluorimetry and patch-clamp experiments were performed on TRPV6-expressing HEK cells to determine whether this Ca(2+)-sensing Ca(2+) channel is constitutively active. Intact cells loaded with fura-2 had an elevated intracellular free Ca(2+) concentration ([Ca(2+)](i)), which decreased to the same level such as in non-transfected cells if external ...
Matthias, Bödding, Veit, Flockerzi
openaire   +2 more sources

Ontogeny of purinergic receptor-regulated Ca2+ signaling in mouse cortical collecting duct epithelium [PDF]

, 2002
Changes in ATP-induced increase in {[}Ca2+], during collecting duct ontogeny were studied in primary monolayer cultures of mouse ureteric bud (UB) and cortical collecting duct (CCD) cells by Fura-PE3 fluorescence ratio imaging.
Tschop, J., Borscheid, R., Huber, S. M., Braun, G. S., Horster, M. F.   +4 more
core   +1 more source

Saltatory Propagation of Ca2+ Waves by Ca2+ Sparks [PDF]

Biophysical Journal, 1998
Punctate releases of Ca2+, called Ca2+ sparks, originate at the regular array of t-tubules in cardiac myocytes and skeletal muscle. During Ca2+ overload sparks serve as sites for the initiation and propagation of Ca2+ waves in myocytes. Computer simulations of spark-mediated waves are performed with model release sites that reproduce the adaptive Ca2 ...
Keizer, Joel, Smith, Gregory D., Ponce-Dawson, Silvina, Pearson, John E.   +3 more
openaire   +2 more sources

Possible Role of N-Methyl-D-Aspartate Glutamate Receptors in The Induction of Acrosome Reaction in Human Sperm [PDF]

Cell Journal
Objective: Acrosome reaction is a receptor and Ca2+-dependent process. N-Methyl-D- aspartate (NMDA) glutamatereceptors are expressed in the human sperm and are involved in the Ca2+ influx.
Hamid Reza Momeni, Elham Farjad, Abolghasem Naiemi, Tahereh Etemadi, Mohammad Hussein Abnosi, Niloufar Darbandi   +5 more
doaj   +1 more source

The self-maintaining nature of ventricular fibrillation : contribution of L-type Ca²+ channels and Na+/Ca²+ exchange to cardiomyocyte Ca²+ overload in ventricular fibrillation : surface fluorescence study in isolated perfused rat hearts [PDF]

, 2004
Approximately 40% of all deaths in Switzerland are due to cardiovascular diseases.1 An important part of these deaths happen because of life-threatening cardiac arrhythmias.
Driamov, Sergey
core   +1 more source

Imaging of the Parotid Impostors

Advances in Oral and Maxillofacial Surgery, 2021
Patients presenting with a parotid region lump may occasionally have a lesion arising from the spaces around, rather than from within, the parotid space.
Alaa Abdelgalil
doaj   +1 more source

Eluate derived by extracorporal antibody-based immunoadsorption elevates the cytosolic Ca2+ concentration in podocytes via B-2 kinin receptors [PDF]

, 2002
Background/Aim: Patients with idiopathic focal segmental glomerulosclerosis (FSGS) often develop a recurrence of the disease after kidney transplantation.
Pavenstadt, H., Rump, L. C., Fischer, Karl-Georg, Pavenstädt, Hermann, Schwertfeger, E., Henger, Anna, Fischer, K. G., Rump, Lars Christian, Fink, E., Huber, Tobias B., Schwertfeger, Eckhard, Henger, A., Huber, T. B., Fink, Edwin   +13 more
core   +1 more source

Ca2+ signals co-ordinate zygotic polarization and cell cycle progression in the brown alga, Fucus serratus. [PDF]

, 2008
Zygotes of the fucoid brown algae provide excellent models for addressing fundamental questions about zygotic symmetry breaking. Although the acquisition of polarity is tightly coordinated with the timing and orientation of the first asymmetric division ...
Brownlee, C, Martin R. McAinsh, Martin J. Genner, Colin Brownlee, McAinsh, M.R., Genner, M.J., Bothwell, John, Genner, Martin J., Kisielewska, Jolanta, McAinsh, Martin R., John H. F. Bothwell, Kisielewska, J, Bothwell, J.H., Jolanta Kisielewska, Bothwell, John H. F., Bothwell, JHF, Bothwell, J.H.F., Brownlee, Colin, McAinsh, MR, Kisielewska, J., Genner, MJ, Brownlee, C.   +21 more
core   +1 more source

STIM Is a Ca2+ Sensor Essential for Ca2+-Store-Depletion-Triggered Ca2+ Influx [PDF]

Current Biology, 2005
Ca(2+) signaling in nonexcitable cells is typically initiated by receptor-triggered production of inositol-1,4,5-trisphosphate and the release of Ca(2+) from intracellular stores. An elusive signaling process senses the Ca(2+) store depletion and triggers the opening of plasma membrane Ca(2+) channels.
Liou, J, Kim, ML, Heo, WD Heo, Won Do, Jones, JT, Myers, JW, Ferrell, JE, Meyer, T   +6 more
openaire   +2 more sources

The Electromagnetic potential gradient ,Ca²⁺ and Starch-Statoliths on the Uneven Growth of Plants

Tropical Agricultural Research, 2011
Effect of electromagnetic potential gradients on the uneven growth of shoot apex of Phaseolus vulgaris was investigated. Phaseolus vulgaris plants were fixed to a 3 - D clinostat with microelectrodes which applied an electromagnetic potential gradient (E.
PSB Wanduragala, JP Eeswara, WAJM De Costa   +2 more
doaj   +1 more source