Showing 1-20 of 20 results for "419648"
G Reiser et al.
Experimental cell research, 202(2), 440-449 (1992-10-01)
Continuous superfusion of rat glioma cells with medium containing bradykinin (from 0.2 nM) induced a transient hyperpolarization followed by regular hyperpolarizing oscillations of the membrane potential. Similar repetitive hyperpolarizing oscillations were caused by extracellularly applied bradykinin or muscarine or by...
P Adams et al.
The Biochemical journal, 335 ( Pt 1), 131-138 (1998-09-22)
Mutational analysis of trans-membrane helices M3, M4, M5 and M7 of the Ca2+-ATPase revealed a novel phenotypic variant, M4 [Y295A (the one-letter symbols are used for amino acid residues throughout)], displaying an increased affinity for Pi and decreased affinity for...
M Wictome et al.
Biochemical and biophysical research communications, 199(2), 916-921 (1994-03-15)
Trilobolide and 2,5-di(tert-butyl)-1,4-benzohydroquinone (BHQ) are potent inhibitors of the Ca(2+)-ATPase of skeletal muscle sarcoplasmic reticulum. Desoxytrilobolide and 2,5-di(tert-butyl)-1,4-diacetylphenol (acetyl-BHQ) have much lower potencies than their parent compounds and 2,5-di(tert-butyl)-1,4-benzoquinone (BQ) has no effect on ATPase activity. Studies using the ATPase...
J K Foskett et al.
The American journal of physiology, 262(3 Pt 1), C656-C663 (1992-03-01)
Previous studies have demonstrated in single rat parotid acinar cells that the microsomal Ca(2+)-ATPase inhibitor thapsigargin mobilizes Ca2+ specifically from the inositol 1,4,5-trisphosphate (IP3)-sensitive Ca2+ store, activates plasma membrane Ca2+ permeability, and induces intracellular Ca2+ concentration ([Ca2+]i) oscillations that are...
Xiao-Meng Chong et al.
Drug development and industrial pharmacy, 45(1), 159-167 (2018-09-21)
Establish an effective experimental strategy to determine the compatibility of rubber closures for drugs. Various types of rubber closures with different compositions are available for drug packaging. Many additives of rubber closures can be released from rubber closures and may...
A Lückhoff et al.
Biophysical journal, 67(1), 177-182 (1994-07-01)
Depletion of intracellular calcium stores induces transmembrane Ca2+ influx. We studied Ca(2+)- and Ba(2+)-permeable ion channels in A431 cells after store depletion by dialysis of the cytosol with 10 mM BAPTA solution. Cell-attached patches of cells held at low (0.5...
Masaaki Yusa et al.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 16(7), 1043-1048 (2017-05-10)
Under the irradiation of red light (690 nm), quinones were converted to hydroquinones by thiols in the presence of metallophthalocyanines. The reaction proceeded via the charge separation between the triplet state of phthalocyanine and the quinone. The product determining step...
H Nakamura et al.
Journal of biochemistry, 112(6), 750-755 (1992-12-01)
We characterized the interaction of 2,5-di(tert-butyl)-1,4-benzohydroquinone (tBuBHQ) with the sarcoplasmic reticulum (SR) Ca(2+)-ATPase from rabbit fast-twitch skeletal and canine cardiac muscles by examining the effect of this agent on the ATPase reaction. tBuBHQ at less than 10 microM inhibited ATP...
Pressure effects on cation migration in 2, 5-di-tert-butyl-1, 4-benzoquinone radical anion.
Kasahara M, et al.
International Journal of Chemical Kinetics, 33(7), 397-401 (2001)
Y K Ju et al.
The Journal of physiology, 516 ( Pt 3), 793-804 (1999-04-14)
1. The mechanism by which sympathetic transmitters increase the firing rate of pacemaker cells was explored in isolated cells from the sinus venosus of the cane toad Bufo marinus. Intracellular calcium concentration ([Ca2+]i) was measured with indo-1 and membrane potential...
H Westerblad et al.
The Journal of physiology, 474(2), 291-301 (1994-01-15)
1. Intracellular calcium concentration ([Ca2+]i) and force were measured from isolated single mouse skeletal muscle fibres at rest and during tetani. The actions of 2,5-di(tert-butyl)-1,4-benzohydroquinone (TBQ), an inhibitor of the sarcoplasmic reticulum (SR) Ca2+ pump, were examined at a range...
M T Clunes et al.
Cell calcium, 20(4), 339-346 (1996-10-01)
The human lung small cell adenocarcinoma cell line, A549, demonstrates a concentration-dependent rise in [Ca2+]i in response to extracellular nucleotides. The cells show Ca2+ mobilization on addition of various nucleotides, with an order of agonist potency: UTP > or =...
B Papp et al.
Cell calcium, 14(7), 531-538 (1993-07-01)
In mixed platelet membrane vesicles the presence of two distinct endoplasmic reticulum-type calcium pump enzymes of 100 and 97 kD molecular mass has been demonstrated. We have previously shown that both calcium pumps were recognized by polyclonal anti-sarcoplasmic reticulum calcium...
Catalytic aerobic deamination of activated primary amines by a model for the quinone cofactor of mammalian copper amine oxidases.
L M Sayre et al.
Methods in enzymology, 258, 53-69 (1995-01-01)
Y K Ju et al.
The Journal of physiology, 525 Pt 3, 695-705 (2000-06-16)
The mechanisms of sarcoplasmic reticulum (SR) Ca2+ release in pacemaker cells from the sinus venosus of the cane toad (Bufo marinus) were studied. Single, isolated cells were voltage clamped using a nystatin-perforated patch. Ionic currents and intracellular Ca2+ concentration ([Ca2+]i)...
L Missiaen et al.
European journal of pharmacology, 227(4), 391-394 (1992-12-01)
Specific inhibitors of the endoplasmic-reticulum Ca2+ pump will deplete intracellular stores and are therefore useful to study the role of store depletion on plasma-membrane Ca2+ permeability. We now report that the Ca(2+)-pump inhibitor 2,5-di-(tert-butyl)-1,4-benzohydroquinone (tBuBHQ) reduces the passive Ca2+ leak...
Vinay Gopal Jannu et al.
International journal of bioinformatics research and applications, 11(2), 142-152 (2015-03-20)
The incidence of bacterial disease has increased tremendously in the last decade, because of the emergence of drug resistance strains within the bacterial pathogens. The present study was to investigate the antibacterial compound 2,5-di-tert-butyl-1,4-benzoquinone (DTBBQ) isolated from marine Streptomyces sp....
R J Dolor et al.
The American journal of physiology, 262(1 Pt 1), C171-C181 (1992-01-01)
We have investigated the role of the intracellular Ca2+ pool in regulating Ca2+ entry into vascular endothelial cells. The intracellular Ca2+ pool was mobilized using either thapsigargin (TG) or 2',5'-di(tert-butyl)-1,4-benzohydroquinone (BHQ), inhibitors of the endoplasmic reticulum Ca(2+)-adenosinetriphosphatase (ATPase). Mobilization of...
V G Chamupathi et al.
Photochemistry and photobiology, 52(4), 883-891 (1990-10-01)
Laser flash photolysis was used to determine the kinetics of electron transfer between membrane-bound triplet chlorophyll (3C), cytochrome c (cyt c) located in the external water phase, and vesicle-reconstituted cytochrome c oxidase (CCO). 2,5-Di-t-butyl benzoquinone (2,5 TBQ) was used as...
L C Rome et al.
The Journal of physiology, 526 Pt 2, 279-286 (2000-07-15)
1. The rate at which an isometrically contracting muscle uses energy is thought to be proportional to its twitch speed. In both slow and fast muscles, however, a constant proportion (25-40 %) of the total energy has been found to...

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