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Showing 1-28 of 28 results for "H1129" within Papers
G Jourquin et al.
Journal of pharmaceutical and biomedical analysis, 14(8-10), 967-975 (1996-06-01)
The fluorescence of tin(IV) complexed by 8-hydroxyquinoline-5-sulfonic acid (8-HQSA) has been studied in both aqueous and hydroorganic (acetate buffer and dimethylsulfoxide) media. Several experimental parameters such as pH, DMSO/water ratio and reactant concentration have been investigated to increase the fluorescence
A S Yanni et al.
Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986), 49(3), 243-247 (1990-01-01)
5-Aryl (or alkyl)-8-hydroxyquinoline-7-sulphonic acids have been prepared by the Mannich reaction of 8-hydroxyquinoline-7-sulphonic acid with primary and secondary amines. Their bactericidal activities have been determined.
Bruna Pippi et al.
Medical mycology, 55(7), 763-773 (2017-02-06)
Clioquinol is an 8-hydroxyquinoline derivative that was widely used from the 1950s to 1970s as an oral antiparasitic agent. In 1970, the oral forms were withdrawn from the market due to reports of toxicity, but topical formulations for antifungal treatment
M H Lee et al.
Archives of biochemistry and biophysics, 248(1), 368-378 (1986-07-01)
Dihydropyrimidine amidohydrolase (EC 3.5.2.2) catalyzes the reversible hydrolysis of 5,6-dihydropyrimidines to the corresponding beta-ureido acids. Previous work has shown that incubation of this Zn2+ metalloenzyme with 2,6-dipicolinic acid, 8-hydroxyquinoline-5-sulfonic acid, or o-phenanthroline results in inactivation by Zn2+ removal by a
M A Pesce et al.
Clinica chimica acta; international journal of clinical chemistry, 136(2-3), 137-144 (1984-01-31)
We developed a rapid fluorometric assay for measurement of serum magnesium using the ligand, 8-hydroxy-quinoline-5-sulfonate and adapted the procedure to the Multistat Fluorescence Light Scattering Centrifugal Analyzer. The standard curve extends from 0.26 to 4.11 mmol/l. There was no interference
M Luísa Ramos et al.
Dalton transactions (Cambridge, England : 2003), 41(40), 12478-12489 (2012-09-08)
Multinuclear ((1)H, (13)C and (27)Al) magnetic resonance spectroscopy (1D and 2D), DFT calculations and fluorescence have been used to study the complexation of 8-hydroxyquinoline-5-sulfonate (8-HQS) with Al(III). The study combines the high sensitivity of luminescence techniques, the selectivity of multinuclear
Y Hojo et al.
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 120(3), 307-310 (2000-03-21)
While oxine-copper (OxCu) is generally used as an agricultural fungicide and induces a harmful effect on ecosystems, little information is available regarding a toxic effect of OxCu on mammals. In this article, we examined in vivo induction of toxicity and
Amruta R Poreddy et al.
Journal of combinatorial chemistry, 6(2), 239-254 (2004-03-09)
This article describes the solid-phase combinatorial methods developed for the synthesis of polyhydroxamate-based siderophores. This strategy was applied to generate several libraries of structural DFO (1a) analogues that include DFO variants, non-amide analogues, C-terminal modified analogues, reverse-amide analogues, and hybrid
Bruna Pippi et al.
Journal of medical microbiology, 67(11), 1655-1663 (2018-09-27)
Candida biofilm infections are frequently linked to the use of biomaterials and are of clinical significance because they are commonly resistant to antifungals. Clioquinol is an antiseptic drug and is effective against multidrug-resistant Candida. We investigated the effect of clioquinol
M Luísa Ramos et al.
Dalton transactions (Cambridge, England : 2003), 42(10), 3682-3694 (2013-01-10)
Multinuclear ((1)H, (13)C and (71)Ga) magnetic resonance spectroscopy (1D and 2D), DFT calculations and luminescence techniques have been used to study 8-hydroxyquinoline-5-sulfonate (8-HQS) and its complexes with Ga(III) in aqueous solutions. The study combines the high sensitivity of luminescence techniques
NMR, DFT and luminescence studies of the complexation of Zn(II) with 8-hydroxyquinoline-5-sulfonate.
M Luísa Ramos et al.
Dalton transactions (Cambridge, England : 2003), 40(44), 11732-11741 (2011-10-04)
Multinuclear ((1)H, (13)C) magnetic resonance spectroscopy, DFT calculations and luminescence techniques have been used to study 8-hydroxyquinoline-5-sulfonate (8-HQS) and its complexes with Zn(ii), in aqueous solution. The study combines the high sensitivity of luminescence techniques, the selectivity of multinuclear NMR
V Serebrov et al.
Nucleic acids research, 26(11), 2723-2728 (1998-05-21)
Mature tRNAPhe from Escherichia coli and the transcript of its gene lacking modified nucleotides were compared by a variety of physical techniques. Melting experiments revealed that at a low Mg2+level the transcript was partially denatured, while the mature tRNA possessed
K A Mookhtiar et al.
Archives of biochemistry and biophysics, 246(2), 645-649 (1986-05-01)
A series of chemical modification reactions has been carried out to identify functional constituents of the active site of human neutrophil collagenase. The enzyme is reversibly inhibited by the transition metal chelating agent 1,10-phenanthroline, and inhibition is fully reversed by
P Wollenberg et al.
Naunyn-Schmiedeberg's archives of pharmacology, 336(5), 578-582 (1987-11-01)
1. In rats iron was absorbed after administration into the gut lumen as ferric iron bound to serum albumin, to nitrilotriacetic acid, and to 8-OH-quinoline sulfonic acid, or as isolated diferri-transferrin. 2. Iron absorption from 59Fe-labelled transferrin was inhibited by
Elif Öztürk et al.
European journal of clinical nutrition, 75(3), 567-569 (2020-09-05)
Aluminum (Al) contamination of parenteral nutrition (PN) solutions has been known for over 30 years. In particular, vascular intake of Al leads to its accumulation in tissues. In this study, 8 all-in-one PN solutions the aluminum concentration was analyzed by
O M Mahmoud et al.
Journal of comparative pathology, 93(4), 551-558 (1983-10-01)
When sheep are injected subcutaneously with copper calcium edetate or copper oxyquinoline sulphonate there is a rapid increase in the concentration of copper in whole blood, serum and urine within the first 24 h. When sheep are injected with copper
M Škodová et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 13(18), 4244-4250 (2012-11-08)
Improvements in cancer diagnostics and therapy have recently attracted the interest of many different branches of science. This study presents one of the new possible approaches in the diagnostics and therapy of cancer by using polymeric chelates as carriers. Graft
S D Bhattacharyya et al.
Infection and immunity, 57(10), 3053-3057 (1989-10-01)
Purified type A botulinum toxin of about 10(6) mouse 50% lethal doses per ml was greater than 99.9% inactivated when incubated at pH 7.4 for 30 min at 37 degrees C in 20 mM 1,10-phenanthroline (PTL) or 2,2'-dipyridyl (DPD) and
Yasuo Suto et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 27(7), 673-673 (2011-07-13)
We report on a chemical-sensing method based on the silica-micelle mesophase wherein both a fluoroionophore and a masking agent are embedded. Using this method, a highly selective detection of metal ions in an aqueous solution has been successfully demonstrated. Furthermore
The relationship between the rate of chelator-induced zinc efflux from erythrocytes and zinc status.
P W Fischer et al.
Biological trace element research, 34(3), 287-297 (1992-09-01)
The rate of zinc (Zn) release from rat erythrocytes incubated in buffers containing a variety of chelators was measured. Only o-phenanthroline, 8-hydroxyquinoline-5-sulfonate, and EDTA caused detectable Zn release. The relationship between the rate of this release in the presence of
Jeferson Schneider Carletto et al.
Journal of hazardous materials, 157(1), 88-93 (2008-02-05)
This study presents the development of an on-line preconcentration system for zinc(II) determination in aqueous samples. The analyte was trapped in a mini-column filled with a chelating resin based on a chitosan biopolymer modified with 8-hydroxyquinoline obtained by the diazotization
Ana Isabel Martínez-Gómez et al.
Applied and environmental microbiology, 75(2), 514-520 (2008-11-18)
An N-carbamoyl-beta-alanine amidohydrolase of industrial interest from Agrobacterium tumefaciens C58 (beta car(At)) has been characterized. Beta car(At) is most active at 30 degrees C and pH 8.0 with N-carbamoyl-beta-alanine as a substrate. The purified enzyme is completely inactivated by the
H Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 57(12), 2403-2407 (2002-01-05)
The addition of thiol compounds to the fluorescence system of Zn(II)-8-hydroxyquinoline-5-sulphonic acid complex (Zn(II)-HQS) in H3BO3-Na2B4O7 buffer (pH 8.50) solution led to immediate fluorescence inhibition, which was proportional to their amounts. Based on this finding, a novel spectrofluorimetric method for
Claude Amiard-Triquet et al.
Environmental toxicology, 21(1), 1-7 (2006-02-08)
Copper distribution has been examined in two microalgae (Haslea ostrearia, Diatom; Tetraselmis suecica, Prasinophyceae) exposed to Cu at 30 microg/L(-1). Exchangeable copper linked at the cell surface was desorbed using 8-hydroxyquinoline-5-sulfonate as complexing agent. Then, incorporated copper was separated between
Luciano Vitali et al.
International journal of biological macromolecules, 42(2), 152-157 (2007-12-07)
In the present study, a new chelating adsorbent was prepared from chitosan microspheres cross-linked with glutaraldehyde by spray drying using 8-hydroxyquinoline -5 sulphonic acid as chelant agent (CTS-SX-CL). Microspheres of the new adsorbent were characterized by Raman spectroscopy, scanning electron
Éva A Enyedy et al.
Journal of inorganic biochemistry, 117, 189-197 (2012-10-24)
The stoichiometry and stability constants of the Ga(III) complexes of 8-hydroxyquinoline (HQ), 8-hydroxyquinoline-5-sulfonate (HQS), maltol, thiomaltol, allomaltol and thioallomaltol were determined by means of pH-potentiometry, UV-vis spectrophotometry, spectrofluorometry and (1)H NMR spectroscopy in aqueous solution. Spectrofluorometry was used to determine
Elane S Boa Morte et al.
Talanta, 79(4), 1100-1103 (2009-07-21)
The present work describes the development of a fast and robust sequential injection fluorimetric procedure for the determination of Sn in juices of canned fruits. The developed automatic methodology is based on the complexation of Sn with 8-hydroxyquinoline-5-sulfonic acid (HQSA)
Hoda Ilkhani et al.
International journal of biological macromolecules, 49(5), 1117-1123 (2011-09-24)
Metal ion-DNA interactions are important in nature, often changing the genetic material's structure and function. A new Yb complex of YbCl(3) (tris(8-hydroxyquinoline-5-sulfonic acid) ytterbium) was synthesized and utilized as an electrochemical indicator for the detection of DNA oligonucleotide based on
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