Emerging structural biology of TRPM subfamily channels.

abstract：:The importance of Ca2+-signaling for many subcellular processes is well established in higher eukaryotes, whereas information about protozoa is restricted. Recent genome analyses have stimulated such work also with Alveolates, such as ciliates (Paramecium, Tetrahymena) and their pathogenic close relatives, the Apicomp...

journal_title：Cell calcium

authors： Plattner H,Sehring IM,Mohamed IK,Miranda K,De Souza W,Billington R,Genazzani A,Ladenburger EM

更新日期：2012-05-01 00:00:00

abstract：:Mammalian homologues of the Drosophila transient receptor potential channel (TRPC) are involved in Ca(2+) entry following agonist stimulation of nonexcitable cells. Seven mammalian TRPCs have been cloned but their mechanisms of activation and/or regulation are still the subject of intense research efforts. It has alre...

journal_title：Cell calcium

authors： Boulay G

更新日期：2002-10-01 00:00:00

abstract：:Synaptic transmission is a key signaling event, whereby an action potential-induced release of chemical neurotransmitters again generates a positive or negative electrical activity via opening of postsynaptic channels. Thereafter, information spreads through space, from the postsynaptic membranes to the dendrites, to ...

journal_title：Cell calcium

authors： Bito H

更新日期：1998-02-01 00:00:00

abstract：:In the complex signalling interplay that allows extracellular signals to be decoded into activation of apoptotic cell death, Ca(2+) plays a significant role. This is supported not only by evidence linking alterations in Ca(2+) homeostasis to the triggering of apoptotic (and in some cases necrotic) cell death, but also...

journal_title：Cell calcium

authors： Ferrari D,Pinton P,Szabadkai G,Chami M,Campanella M,Pozzan T,Rizzuto R

更新日期：2002-11-01 00:00:00

abstract：:The secretion of adrenocorticotrophin (ACTH) from corticotropes is a key component in the endocrine response to stress. The resting potential of corticotropes is set by the basal activities of TWIK-related K(+) (TREK)-1 channel. Corticotrophin-releasing hormone (CRH), the major ACTH secretagogue, closes the background...

journal_title：Cell calcium

authors： Tse A,Lee AK,Tse FW

更新日期：2012-03-01 00:00:00

abstract：:Cultured human skeletal muscle cells are frequently used as a model to study muscle pathology, in which Ca2+ homeostasis might be affected. However, their excitation-contraction (E-C) coupling has been poorly investigated. In order to elucidate E-C coupling of cultured muscle cells, we activated the acetylcholine rece...

journal_title：Cell calcium

authors： Benders AA,Oosterhof A,Wevers RA,Veerkamp JH

更新日期：1997-01-01 00:00:00

abstract：:NAADP is a potent regulator of cytosolic calcium levels. Much evidence suggests that NAADP activates a novel channel located on an acidic (lysosomal-like) calcium store, the mobilisation of which results in further calcium release from the endoplasmic reticulum. Here, we discuss the recent identification of a family o...

journal_title：Cell calcium

authors： Patel S,Marchant JS,Brailoiu E

更新日期：2010-06-01 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：:Several recent reports have demonstrated how engineered proteins can control cell motility, an important functional module for ultimately programming cells as therapeutics. We have reported two engineered proteins that regulate the blebbing cell morphology using chimeras of RhoA, a protein that regulates cytoskeletal ...

journal_title：Cell calcium

authors： Mills E,Truong K

更新日期：2013-03-01 00:00:00

abstract：:Using the low-affinity fluorescent Ca(2+) indicators, Mag-Fura-2 and Mag-Fura Red, we studied light- and InsP(3)-induced Ca(2+) release in permeabilized microvillar photoreceptors of the medicinal leech, Hirudo medicinalis. Two major components of the phosphoinositide signaling pathway, phospholipase-C and the InsP(3)...

journal_title：Cell calcium

authors： Ukhanov K,Mills SJ,Potter BV,Walz B

更新日期：2001-05-01 00:00:00

abstract：:A preparation of sea urchin eggs permeabilized with digitonin (40 microM for 2.5 min) was used to study the kinetic characteristics of the two cellular compartments suspected to play a key role in cellular calcium transfer during fertilization: an ATP-dependent Ca2+ pool (Km = 0.47 microM; Vm = 0.48 nmol/min.mg protei...

journal_title：Cell calcium

authors： Girard JP,Gillot I,De Renzis G,Payan P

更新日期：1991-04-01 00:00:00

abstract：:The glucoregulatory hormones insulin and glucagon are released from the β- and α-cells of the pancreatic islets. In both cell types, secretion is secondary to firing of action potentials, Ca(2+)-influx via voltage-gated Ca(2+)-channels, elevation of [Ca(2+)](i) and initiation of Ca(2+)-dependent exocytosis. Here we di...

journal_title：Cell calcium

authors： Rorsman P,Braun M,Zhang Q

更新日期：2012-03-01 00:00:00

abstract：:Rat liver was homogenized and subjected to differential centrifugation. When the low speed nuclear pellet was processed on a Percoll gradient, plasma membrane markers and Ins(1,4,5)P3 binding activity purified together. The high speed (microsomal) fraction was subfractionated by sucrose density gradient centrifugation...

journal_title：Cell calcium

authors： Enyedi P,Szabadkai G,Krause KH,Lew DP,Spät A

更新日期：1993-06-01 00:00:00

abstract：:Pancreatitis is an increasingly common disease that carries a significant mortality and which lacks specific therapy. Pathological calcium signalling is an important contributor to the initiating cell injury, caused by or acting through mitochondrial inhibition. A principal effect of disordered cell signalling and imp...

journal_title：Cell calcium

authors： Mukherjee R,Criddle DN,Gukovskaya A,Pandol S,Petersen OH,Sutton R

更新日期：2008-07-01 00:00:00

abstract：:Cellular Ca2+ signals are often constrained to cytosolic micro- or nano-domains where stochastic openings of Ca2+ channels cause large fluctuations in local Ca2+ concentration (Ca2+ 'noise'). With the advent of TIRF microscopy to image the fluorescence of Ca2+-sensitive probes from attoliter volumes it has become poss...

journal_title：Cell calcium

authors： Swaminathan D,Dickinson GD,Demuro A,Parker I

更新日期：2020-03-01 00:00:00

abstract：:Pancreatic islets produce pulses of insulin and other hormones that maintain normal glucose homeostasis. These micro-organs possess exquisite glucose-sensing capabilities, allowing for precise changes in pulsatile insulin secretion in response to small changes in glucose. When communication among these cells is disrup...

journal_title：Cell calcium

authors： Scarl RT,Corbin KL,Vann NW,Smith HM,Satin LS,Sherman A,Nunemaker CS

更新日期：2019-11-01 00:00:00

abstract：:Calcium ion is involved in diverse physiological and developmental pathways. One of the important roles of calcium is a signaling messenger, which regulates signal transduction in plants. CBL (calcineurin B-like protein) is one of the calcium sensors that specifically interact with a family of serine-threonine protein...

journal_title：Cell calcium

authors： Kanwar P,Sanyal SK,Tokas I,Yadav AK,Pandey A,Kapoor S,Pandey GK

更新日期：2014-08-01 00:00:00

abstract：:Several proteins have been identified that associate with calcium release channels and potentially regulate their function. Using tacrolimus as a pharmacological tool, we investigated whether the immunophilin FKBP12 modulates ryanodine receptor channels in intestinal smooth muscle. Results with PCR demonstrated the pr...

journal_title：Cell calcium

authors： Bielefeldt K,Sharma RV,Whiteis C,Yedidag E,Abboud FM

更新日期：1997-12-01 00:00:00

abstract：:Cytosolic Ca(2+) signals are fundamental for the early and late steps of myoblast differentiation and are, as in many cells, generated by Ca(2+) release from internal stores as well as by plasma membrane Ca(2+) entry. Our recent studies identified the store-operated Ca(2+) channels, Orai1 and TRPC1&C4, as crucial for ...

journal_title：Cell calcium

authors： Antigny F,Konig S,Bernheim L,Frieden M

更新日期：2014-12-01 00:00:00

abstract：:N,N'-dicyclohexylcarbodiimide (DCCD) and 1-cyclohexyl-3-(2-morpholinoethyl) carbodiimide (CMCD) inhibited calmodulin-dependent Ca2(+)+Mg2(+)-ATPase activity in erythrocyte ghost membranes. The extent of the inhibition caused by carbodiimides strongly depended on their hydrophobicity. Hydrophobic DCCD was a more potent...

journal_title：Cell calcium

authors： Famulski KS,Pikula S,Wrzosek A,Wojtczak AB

更新日期：1990-04-01 00:00:00

abstract：:An important challenge in the study of Ca2+ signalling is to understand the dynamics of intracellular Ca2+ levels during and after physiological stimulation. While extensive information is available regarding the structural and biophysical properties of Ca2+ channels, pumps and exchangers that control cellular Ca2+ mo...

journal_title：Cell calcium

authors： Friel DD

更新日期：2000-11-01 00:00:00

abstract：:The sensitivity to Ca2+ of the Ca2+-dependent K+ channel can be increased by the artificial electron donor system ascorbate + phenazine-methosulphate in a variety of animal cells. In the human erythrocyte the shift from the 'low' to the 'high-affinity' state seems to depend on the reduction of a membrane component acc...

journal_title：Cell calcium

authors： García-Sancho J,Herreros B

更新日期：1983-12-01 00:00:00

abstract：:Endothelin-1 (ET-1), a potent vasoactive peptide with a pathogenic role in vascular diseases, has been shown to induce the activation of ERK1/2, PKB and the expression of a transcriptional regulator, the early growth response 1 (Egr-1), key mediators of hypertrophic and proliferative responses in vascular smooth muscl...

journal_title：Cell calcium

authors： Bouallegue A,Simo Cheyou ER,Anand-Srivastava MB,Srivastava AK

更新日期：2013-12-01 00:00:00

abstract：:Human neutrophils, preloaded with the fluorescent probe, Fura-2, were exposed to Ca2+-releasing agents. The monitored traces of fluorescence were transformed by computer to cytosolic Ca2+ concentration ([ Ca2+]i). Due to quenching of Fura-2, the addition of Mn2+ enabled us to compute the cytosolic concentration of tot...

journal_title：Cell calcium

authors： Foder B,Scharff O,Thastrup O

更新日期：1989-10-01 00:00:00

abstract：:Inhibition by Mg2+ ions of exocytotic secretion from permeabilised eosinophils, stimulated by Ca2+ and GTP gamma S, and in the presence and absence of ATP, has been examined. While Mg2+ inhibits release of aryl sulphatase, hexosaminidase and peroxidase, we found no evidence that this occurs by competition at a Ca(2+)-...

journal_title：Cell calcium

authors： Larbi KY,Gomperts BD

更新日期：1997-03-01 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：:NAADP (nicotinic acid adenine dinucleotide phosphate) is a recently discovered second messenger, and as such, we have much yet to learn about its functions in health and disease. A bottleneck in this basic research is due to NAADP, like all second messengers, being charged to prevent it from leaking out of cells. This...

journal_title：Cell calcium

authors： Parkesh R,Lewis AM,Aley PK,Arredouani A,Rossi S,Tavares R,Vasudevan SR,Rosen D,Galione A,Dowden J,Churchill GC

更新日期：2008-06-01 00:00:00

abstract：:Previously, we have used the classical approach to examine intracellular calcium stores in human foreskin fibroblasts (HSWP) cells. In this classical protocol cells are first permeabilized and then allowed to fill their Ca2+ reservoirs with 45Ca2+ in the presence of ATP. In this paper we present an alternative method ...

journal_title：Cell calcium

authors： Baumgarten LB,Lee HC,Villereal ML

更新日期：1995-01-01 00:00:00

abstract：:Signal transduction by auditory and vestibular hair cells involves an impressive ensemble of finely tuned control mechanisms, strictly dependent on the local intracellular Ca(2+) concentration ([Ca(2+)](i)). The study of Ca(2+) dynamics in hair cells typically combines Ca(2+)-sensitive fluorescent indicators (dyes), p...

journal_title：Cell calcium

authors： Bortolozzi M,Lelli A,Mammano F

更新日期：2008-08-01 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