Mobilization of Ca2+ stores in individual pancreatic beta-cells permeabilized or not with digitonin or alpha-toxin.

abstract：:TRPC channels are a subset of the transient receptor potential (TRP) proteins widely expressed in mammalian cells. They are thought to be primarily involved in determining calcium or sodium entry and have broad-ranging functions that include regulation of cell proliferation, motility and contraction. The channels do n...

journal_title：Cell calcium

authors： Beech DJ,Bahnasi YM,Dedman AM,Al-Shawaf E

更新日期：2009-06-01 00:00:00

abstract：:The lack of specific inhibitors of the plasma membrane Ca2+ pump (PMCA) has made vanadate (VO3-), a non-specific inhibitor, an invaluable tool in the study of PMCA function. However, three important properties of vanadate as an inhibitor of the PMCA in intact cells, namely its speed of action in different experimental...

journal_title：Cell calcium

authors： Tiffert T,Lew VL

更新日期：2001-11-01 00:00:00

abstract：:Neurons generate particular calcium microdomains in response to different stimuli. Calcium microdomains have a central role in a variety of neuronal functions. In particular, calcium microdomains participate in long-lasting synaptic plasticity--a neuronal response presumably correlated with cognitive brain functions t...

journal_title：Cell calcium

authors： Carrasco MA,Hidalgo C

更新日期：2006-11-01 00:00:00

abstract：:This work shows, for the first time, a properly metabolically regulated squid nerve Na(+)/Ca(2+) exchanger (NCXSQ1) heterologous expressed in Saccharomyces cerevisiae. The exchanger was fused to the enhanced green fluorescence protein (eGFP) on its C-terminus and had two tags, a Strep-tag II and 6 histidines, added to...

journal_title：Cell calcium

authors： Raimunda D,Bollo M,Beaugé L,Berberián G

更新日期：2009-05-01 00:00:00

abstract：:An influx of Ca2+ into red blood cells of the bivalve mollusc Noetia ponderosa occurs immediately following a hypo-osmotic stress. The volume recovery response to the stress is dependent upon [Ca2+]o and is inhibited by phenothiazines. The action of these drugs is on the amino acid regulation portion of the recovery r...

journal_title：Cell calcium

authors： Pierce SK,Politis AD,Cronkite DH,Rowland LM,Smith LH Jr

更新日期：1989-04-01 00:00:00

abstract：:We describe experiments in which the low affinity indicator Oregon Green BAPTA 5N was used to record the spatially resolved changes in [Ca(2+)] from intracellular stores in rat gastric myocytes. Cells were loaded with the membrane permeant form of the indicator and imaged using a confocal scanning laser microscope. In...

journal_title：Cell calcium

authors： White C,McGeown G

更新日期：2002-04-01 00:00:00

abstract：:Intracytoplasmic sperm injection (ICSI) into mammalian eggs induces repetitive rises in intracellular Ca2+ concentration ([Ca2+]i) which are the pivotal signal in fertilization. Spatiotemporal aspects of [Ca2+]i rises following ICSI into the periphery of mouse eggs were investigated with high-speed confocal microscopy...

journal_title：Cell calcium

authors： Sato MS,Yoshitomo M,Mohri T,Miyazaki S

更新日期：1999-07-01 00:00:00

abstract：:The mechanisms that regulate ion and fluid transport by the human intrahepatic bile duct have not been well defined. Human intrahepatic biliary cell lines that we have developed were used to identify and characterize purinoceptors based on increases in intracellular calcium in response to ATP and other nucleotides. In...

journal_title：Cell calcium

authors： Wolkoff LI,Perrone RD,Grubman SA,Lee DW,Soltoff SP,Rogers LC,Beinborn M,Fang SL,Cheng SH,Jefferson DM

更新日期：1995-05-01 00:00:00

abstract：:A new method for the determination of tissue concentrations of Fura-2 and Fura-2/AM was developed based upon acetonitrile extraction followed by RP-HPLC separation (using tetrahexylammonium as counter-ion), post-column alkaline hydrolysis of Fura-2/AM, and fluorimetric detection. The detection limit was 1.2 nM and 1 n...

journal_title：Cell calcium

authors： Tran NN,Leroy P,Bellucci L,Robert A,Nicolas A,Atkinson J,Capdeville-Atkinson C

更新日期：1995-11-01 00:00:00

abstract：:Dynamic nuclear Ca(2+) signals play pivotal roles in diverse cellular functions including gene transcription, cell growth, differentiation, and apoptosis. Here we report a novel nuclear Ca(2+) regulatory mechanism mediated by inositol 1,4,5-trisphosphate receptors (IP(3)Rs) around the nucleus in developing cardiac myo...

journal_title：Cell calcium

authors： Luo D,Yang D,Lan X,Li K,Li X,Chen J,Zhang Y,Xiao RP,Han Q,Cheng H

更新日期：2008-02-01 00:00:00

abstract：:To determine the effects of exposure to reserpine on subcellular Ca2+ transporting systems, active Ca2+ uptake was measured with and without ruthenium red in submandibular gland vesicles obtained from rats after chronic treatment with reserpine. The properties of ruthenium red-sensitive Ca2+ uptake were similar to tho...

journal_title：Cell calcium

authors： Hurley TW,Martinez JR

更新日期：1987-10-01 00:00:00

abstract：:Increases in global Ca(2+) in the endothelium are a crucial step in releasing relaxing factors to modulate arterial tone. In the present study we investigated spontaneous Ca(2+) events in endothelial cells, and the contribution of smooth muscle cells to these Ca(2+) events, in pressurized rat mesenteric resistance art...

journal_title：Cell calcium

authors： Kansui Y,Garland CJ,Dora KA

更新日期：2008-08-01 00:00:00

abstract：:Cardiogenesis depends on a tightly regulated balance between proliferation and differentiation of cardiac progenitor cells (CPCs) and their cardiomyocyte descendants. While exposure of early mouse embryos to Ca(2+) channel antagonists has been associated with abnormal cardiac morphogenesis, less is known about the con...

journal_title：Cell calcium

authors： Hotchkiss A,Feridooni T,Zhang F,Pasumarthi KB

更新日期：2014-05-01 00:00:00

abstract：:Membrane deformation induced by a mechanical stimulus increases the [Ca2+]i in cultured retinal pigment epithelial (RPE) cells, and in many other cell types. In this study, confocal microscopy and Ca(2+)-measurements using the fluorescent dye fluo-3 were used to measure the spatiotemporal characteristics of the Ca(2+)...

journal_title：Cell calcium

authors： Stalmans P,Himpens B

更新日期：1999-06-01 00:00:00

abstract：:A 106 kD protein was isolated from skeletal sarcoplasmic reticulum (SR) vesicles and shown to have the properties of SR Ca2+ release channels, including blockade by 5 nM ryanodine. In view of extensive reports that the ryanodine-receptor complex consists of four 565 kD junctional feet proteins (JFPs) and is the 'physi...

journal_title：Cell calcium

authors： Salama G,Nigam M,Shome K,Finkel MS,Lagenaur C,Zaidi NF

更新日期：1992-11-01 00:00:00

abstract：:The annexins are a family of calcium-binding proteins. Data from protein and cDNA sequencing have shown that at least five distinct but closely related mammalian annexins exist each of which possesses four or eight homologous internal repeats which may be calcium-and phospholipid-binding domains. The proteins are pres...

journal_title：Cell calcium

authors： Burgoyne RD,Geisow MJ

更新日期：1989-01-01 00:00:00

abstract：:Using the fluorescent Ca2+ probe Quin-2 it has been reported that cholera toxin (CT) and its B subunit (B-CT) increase cytosolic free Ca2+ concentration ([Ca2+]i) in entherocytes, thymocytes and fibroblasts. In this work we show, however, that the fluorescence increases of Quin-2-loaded cells (rat thymocytes, mouse sp...

journal_title：Cell calcium

authors： Astashkin EI,Surin AM,Mikhna MG,Nikolaeva IS,Lazarev AV,Gukovskaya AS

更新日期：1990-06-01 00:00:00

abstract：:When Xenopus oocytes injected with rat brain poly(A)+RNA were voltage-clamped in a recording solution containing Ca2+, a depolarization pulse induced a transient current, ICl(Ca), which reflects calmodulin-mediated opening of endogenous Cl- channels in response to a Ca2+ influx through Ca2+ channels of brain origin. I...

journal_title：Cell calcium

authors： Kaneko S,Doi E,Watanabe H,Nomura Y

更新日期：1990-04-01 00:00:00

abstract：:The endoplasmic reticulum (ER) acts as a dynamic calcium store and is involved in the generation of specific patterns of calcium signals in neurons. Calcium is mobilized from the ER store by multiple signaling cascades, and neuronal activity is known to regulate ER calcium levels. We asked how neurons regulate ER calc...

journal_title：Cell calcium

authors： Samtleben S,Wachter B,Blum R

更新日期：2015-08-01 00:00:00

abstract：:Mast cells are considered the primary initiators of allergic diseases as a consequence of the release of multiple inflammatory mediators on activation. Although predominately activated through antigen-mediated aggregation of IgE-occupied-FcɛRI, they can also be induced to release mediators by other receptors and envir...

journal_title：Cell calcium

authors： Medic N,Desai A,Komarow H,Burch LH,Bandara G,Beaven MA,Metcalfe DD,Gilfillan AM

更新日期：2011-11-01 00:00:00

abstract：:The regulation of intracellular Ca(2+) signalling by phosphorylation processes remains poorly defined, particularly with regards to tyrosine phosphorylation. Evidence from non-excitable cells implicates tyrosine phosphorylation in the activation of so-called store-operated Ca(2+) channels (SOCCs), but their involvemen...

journal_title：Cell calcium

authors： Koss DJ,Riedel G,Platt B

更新日期：2009-07-01 00:00:00

abstract：:Intracellular Ca(2+) signals are essential for stem cell differentiation due to their ability to control signaling pathways involved in this process. Arginine vasopression (AVP) is a neurohypophyseal hormone that increases intracellular Ca(2+) concentration during adipogenesis via V1a receptors, Gq-proteins and the PL...

journal_title：Cell calcium

authors： Tran TD,Gimble JM,Cheng H

更新日期：2016-03-01 00:00:00

abstract：:We previously found in single channel studies that ryanodine receptor (RyR) channel activity can be made insensitive to block by Mg2+ when terminal cisternae of sarcoplasmic reticulum, incorporated into planar bilayers, are treated with protein kinase A (PKA) or Ca2+/calmodulin dependent protein kinase type II (CamPK ...

journal_title：Cell calcium

authors： Mayrleitner M,Chandler R,Schindler H,Fleischer S

更新日期：1995-09-01 00:00:00

abstract：:Ca2+ entry through voltage-gated Ca2+ channels (VGCC) triggers transmitter release. Direct recording of Ca2+ currents from the calyx of Held nerve terminal revealed that presynaptic VGCCs undergo various modulations via presynaptic G protein-coupled receptors (GPCRs), Ca2+-binding proteins and a developmental switch o...

journal_title：Cell calcium

authors： Takahashi T

更新日期：2005-05-01 00:00:00

abstract：:The highly differentiated structure of the neuron poses special problems for the intracellular movement of molecules throughout the cell. Molecular transport distances from the synthesizing neuron cell body along the axon (which has no substantial synthetic capabilities) to the axon terminal are very great. The transp...

journal_title：Cell calcium

authors： Breuer AC,Atkinson MB

更新日期：1988-12-01 00:00:00

abstract：:Here we examine the potential coupling between the synthesis of secretory proteins and the sensitivity of exocytosis to the concentration of free Ca(2+) in the cytosol ([Ca(2+)](i)) in plant cell. We therefore monitor in tobacco protoplasts the excursion of the membrane capacitance in response to an elevation of [Ca(2...

journal_title：Cell calcium

authors： Sutter JU,Denecke J,Thiel G

更新日期：2012-09-01 00:00:00

abstract：:Fura-2 and BAPTA were previously shown to be competitive antagonists of inositol trisphosphate (InsP3) receptors, but for practical reasons the analyses were performed at pH 8.3. We recently developed a scintillation proximity assay (SPA) for pure cerebellar InsP3 receptors which allows low affinity interactions to be...

journal_title：Cell calcium

authors： Morris SA,Correa V,Cardy TJ,O'Beirne G,Taylor CW

更新日期：1999-02-01 00:00:00

abstract：:Depletion of calcium in the extracellular medium used to incubate first trimester human placental minces resulted in a significant decrease in the quantity of immunoreactive hCG in the medium and a corresponding increase in the tissue. In contrast, when secretion of newly synthesised hCG was monitored in the absence o...

journal_title：Cell calcium

authors： Sharma SC,Rao AJ

更新日期：1993-09-01 00:00:00

abstract：:Muscarinic acetylcholine (ACh) receptors activate the phospholipase C signal transduction pathway to promote the formation of inositol 1,4,5-trisphosphate [Ins(1,4,5)P3] and the consequent elevation of cytoplasmic calcium (Ca2+). The inositol phosphate and Ca(2+)-mobilization responses to ACh were analyzed in Xenopus ...

journal_title：Cell calcium

authors： Ji H,Sandberg K,Bonner TI,Catt KJ

更新日期：1993-10-01 00:00:00

abstract：:The adenine nucleotide translocator (ANT) is an autoantigen in myocarditis and dilated cardiomyopathy. Carrier-specific antibodies impair myocardial energy metabolism and heart function. They cross-react with a myolemmal calcium channel and alter calcium fluxes in isolated myocytes. To test whether antibodies against ...

journal_title：Cell calcium

authors： Schulze K,Heineman FW,Schultheiss HP,Balaban RS

更新日期：1999-05-01 00:00:00