Abstract:
:The gallium(III) complex of a new tripodal 3-hydroxy-4-pyridinone (3,4-HP) chelator has been studied in terms of its physico-chemical and in vivo properties aimed at potential application as probe for nuclear imaging. In particular, based on spectrophotometric titrations, the hexa-coordinated (1:1) gallium complex appeared as the major species in a wide physiological acid-neutral pH range and its high stability (pGa=27.5) should avoid drug-induced toxicity resulting from Ga(III) accumulation in tissues due to processes of transmetallation with endogenenous ligands or demetallation. A multinuclear ((1)H and (71)Ga) NMR study gave some insights into the structure and dynamics of the gallium(III) chelate in solution, which are consistent with the tris-(3,4-HP) coordination and an eventual pseudo-octahedral geometry. Biodistribution and scintigraphic studies of the (67)Ga(III) labelled chelate, performed in Wistar rats, confirmed the in vivo stability of the radiolabelled complex, its non interaction with blood proteins and its quick renal clearance. These results indicate good perspectives for potential application of extrafunctionalized analogues in radiodiagnostic techniques.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Chaves S,Mendonça AC,Marques SM,Prata MI,Santos AC,Martins AF,Geraldes CF,Santos MAdoi
10.1016/j.jinorgbio.2010.09.012subject
Has Abstractpub_date
2011-01-01 00:00:00pages
31-8issue
1eissn
0162-0134issn
1873-3344pii
S0162-0134(10)00226-6journal_volume
105pub_type
杂志文章abstract::Effects of the administration of trivalent chromium (Cr(III)) to mice and the activation of carbon tetrachloride (CCl4) to form trichloromethyl radicals (.CCl3) in the liver were studied. The lipid peroxidation in liver microsomes induced in vitro by CCl4 in the presence of NADPH was decreased by the preadministration...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(91)84031-4
更新日期:1991-12-01 00:00:00
abstract::The bacterial cytochrome c peroxidases contain an electron-transferring haem c (E) and a peroxidatic haem c (P). Many are isolated in an inactive oxidised state. Reduction of the E haem promotes Ca(2+)-dependent spin state and coordination changes at the P haem rendering it accessible to ligand. Recent crystallographi...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2005.12.008
更新日期:2006-04-01 00:00:00
abstract::An antineoplastic agent, cis-K4 [PtCl2ATP] has been synthesized and characterized, using elemental analysis, solution conductance, thermoanalysis, infrared, NMR spectroscopy, and circular dichroism studies. The in vitro cytotoxic effect imparted by this compound on Dalton's Lymphoma cells has been assessed by Trypan b...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(91)80022-a
更新日期:1991-03-01 00:00:00
abstract::The synthesis, structural characterization, voltammetric experiments and antibacterial activity of [Ni(sulfisoxazole)(2)(H(2)O)(4)].2H(2)O and [Ni(sulfapyridine)(2)] were studied and compared with similar previously reported copper complexes. [Ni(sulfisoxazole)(2)(H(2)O)(4)].2H(2)O crystallized in a monoclinic system,...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2007.09.001
更新日期:2008-02-01 00:00:00
abstract::The stability constants of the mixed ligand complexes formed between Cu(Arm)2+, where Arm=2,2'-bipyridine (Bpy) or 1,10-phenanthroline (Phen), and the monoanion or the dianion of 9-(4-phosphonobutyl)adenine (dPMEA=3'-deoxa-PMEA), which is the carba analogue of the antivirally active 9-[2-(phosphonomethoxy)ethyl]adenin...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(00)00194-x
更新日期:2001-03-01 00:00:00
abstract::As two quite complicated substances, arsenic (As) and copper (Cu) have polluted to the environment. As is highly toxic and could cause nerve damage. Cu is involved in the occurrence of oxidative stress. The brain is one of the main target organs of heavy metal toxicity, but the damage mechanism activated by As and/or ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2020.111201
更新日期:2020-10-01 00:00:00
abstract::Some DNA-binding experiments employing a selected number of novel dinuclear platinum complexes with the 4,4'-dipyrazolylmethane (dpzm) ligand are reported. A DNA-cleavage assay using Eco RI and Bam HI restriction endonucleases to probe the binding of the complexes at or near their unique restriction sequences of pUC9 ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(93)80007-v
更新日期:1993-02-15 00:00:00
abstract::Two novel pyrazole based thiourea palladium(II) complexes, [PdCl(PPh3)(C9H8NO2S-pz)] (1) and [PdCl(PPh3)(C14H10NO2S-pz)] (2) [pz = pyrazole (C3H2N2)] have been obtained unexpectedly from chromone thiosemicarbazones (L1 and L2) and [PdCl2(PPh3)2]. The compounds have been fully characterized by physicochemical studies. ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2019.110988
更新日期:2020-04-01 00:00:00
abstract::The preparation, spectral properties, and crystal structure of a copper(II) complex of 4-acetyl-N-[(cyclohexylamino)carbonyl]benzenesulfonamide, which is known as acetohexamide, and pyridine are reported. The complex Cu(AH)2(py)2, where AH = acetohexamide and py = pyridine, was prepared and characterized by X-ray and ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(90)84012-e
更新日期:1990-03-01 00:00:00
abstract::Metal-arene complexes containing bioactive natural-product derived ligands can have new and unusual properties. We report the synthesis, characterization and antiproliferative activity of two new Ru(II) arene complexes with imidazole (dichlorido complex 1) or bipyridyl (chlorido complex 2) ligands conjugated to 18β-gl...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2018.02.004
更新日期:2018-05-01 00:00:00
abstract::Methanobactins are copper-binding ligands produced by aerobic methanotrophic microorganisms. A quantitative understanding of their potential role in methanotrophic copper acquisition requires the investigation of their copper complexes under relevant pH conditions. In this study, a chemical speciation model describing...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2012.07.008
更新日期:2012-11-01 00:00:00
abstract::EPR-based potentiometric titrations are a well-established method for determining the reduction potentials of cofactors in large and complex proteins with at least one EPR-active state. However, such titrations require large amounts of protein. Here, we report a new method that requires an order of magnitude less prot...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2016.04.025
更新日期:2016-09-01 00:00:00
abstract::HtaA is a heme-binding protein that is part of the heme uptake system in Corynebacterium diphtheriae. HtaA contains two conserved regions (CR1 and CR2). It has been previously reported that both domains can bind heme; the CR2 domain binds hemoglobin more strongly than the CR1 domain. In this study, we report the bioph...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2016.11.027
更新日期:2017-02-01 00:00:00
abstract::The magnetic properties of intact and freeze-dried blood cells of the tunicate Ascidia nigra and of model vanadium(III) and (IV) compounds as polycrystalline solids and in aqueous solution have been measured up to 50 kOe with a SQUID susceptometer. Corrections for the samples' diamagnetism were extracted from the temp...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)80048-5
更新日期:1988-07-01 00:00:00
abstract::Two new homo- and hetero-dinuclear complexes, [Cu(2)L(im)](ClO(4))(3)4H(2)O (1) and [CuZnL(im)](ClO(4))(3)4H(2)O (2) (where Im=1H-1midazole and L=3, 6, 9, 16, 19, 22-hexaaza-6, 19-bis(1H-imidazol-4-ylmethyl)tricycle[22, 2, 2, 2(11,14)]triaconta-1, 11, 13, 24, 27, 29-hexaene) were synthesized and characterized as model...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2009.06.003
更新日期:2009-08-01 00:00:00
abstract::Three novel copper(II) compounds of formulas {[Cu(Phen)(Ala)]·NO3·H2O}n (1), {[Cu(Phen)(Ala)]·NO3}n (2) and [Cu(Ala)2]n (3) have been synthesized and determined by X-ray diffraction. 1 and 2 are shown in one dimensional long-chain chiral structures, and 3 is a two dimensional checkerboard-type structure. Both 1 and 2 ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2016.01.007
更新日期:2016-03-01 00:00:00
abstract::Gulf War Syndrome is a multi-system disorder afflicting many veterans of Western armies in the 1990-1991 Gulf War. A number of those afflicted may show neurological deficits including various cognitive dysfunctions and motor neuron disease, the latter expression virtually indistinguishable from classical amyotrophic l...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2009.05.019
更新日期:2009-11-01 00:00:00
abstract::Phosphate buffer suspensions of unilamellar liposomes of phosphatidylcholine were irradiated with UVC (254 nm) and UVB (300 nm) light. The irradiation provoked lipid peroxidation and liposome lysis with release of entrapped glucose-6-phosphate. At the same intensity of absorbed light, the photochemical effect at 254 n...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(94)00048-f
更新日期:1995-07-01 00:00:00
abstract::The complexation between tin(II) ion and glycine was studied in 0.15 mol/dm3 NaCl medium at 310 K using potentiometric glass electrode titrations. In the pH range 1.1-4.5 and concentration range of the tin(II) between 0.2 and 5.0 mmol/dm3, with variable glycine-to-tin molar ratio up to 10:1, the experimental data were...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(95)00085-2
更新日期:1996-04-01 00:00:00
abstract::Polyoxometalates (POMs) are promising inorganic inhibitors for P-type ATPases. The experimental models used to study the effects of POMs on these ATPases are usually in vitro models using vesicles from several membrane sources. Very recently, some polyoxotungstates, such as the Dawson anion [P2W18O62]6-, were shown to...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2019.110700
更新日期:2019-08-01 00:00:00
abstract::The redox active iron-sulfur center of bovine adrenodoxin is coordinated by four cysteine residues in positions 46, 52, 55 and 92 and is covered by a loop containing the residues Glu-47, Gly-48, Thr-49, Leu-50 and Ala-51. In plant-type [2Fe-2S] ferredoxins, the corresponding loop consists of only four amino acids. The...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(02)00463-4
更新日期:2002-09-20 00:00:00
abstract::It was shown that the treatment of a DNA fragment and a hepta-decanucleotide having a hairpin structure by Ru(2,2'-bipyridyl)3(3+) complex at 15 degrees C in 1 M NaCl for 10-60 min, and subsequent hydrolysis in 1 M piperidine at 95 degrees C led to the specific cleavage of the polynucleotide chain at guanosine residue...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)85025-6
更新日期:1988-11-01 00:00:00
abstract::A series of platinum(II) complexes with 2,9-disubstituted-6-benzylaminopurines has been prepared. The complexes have the following composition: cis-[Pt(Boh)(2)Cl(2)] (1), cis-[Pt(Oc)(2)Cl(2)] (2), cis-[Pt(Ros)(2)Cl(2)] (3), cis-[Pt(i-PrOc)(2)Cl(2)] (4), cis-[Pt(BohH(+))(2)Cl(2)]Cl(2) (5), cis-[Pt(OcH(+))(2)Cl(2)]Cl(2)...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2005.07.009
更新日期:2005-11-01 00:00:00
abstract::the reactions of chloroauric acid (HAuCl4) with inosine=ino, guanosine=guo, triacetylinosine=trino, triacetylguanosine=trguo, and cytidine=cyd were studied. Complexes of AU(III) and AU(I) with these nucleosides have been isolated from the reactions at different pH values in aqueous and in methanolic solutions. The Au(...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(00)80032-x
更新日期:1981-04-01 00:00:00
abstract::Due to the broad spectrum of biological activities of flavonoids, their target molecules in the cell are intensively studied. We examined the interactions of the flavonoid quercetin (Q) and its lanthanum complex (QLa(3+)) with very recently isolated plant viral satellite (sat) dsRNA. Comparison of the cumulative bindi...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2009.08.008
更新日期:2009-12-01 00:00:00
abstract::Tetrathiomolybdate (TTM) is a powerful and selective copper (Cu) chelator that is used as a therapeutic agent for Wilson disease. TTM is the sole agent that can remove Cu bound to metallothionein (MT) in the livers of Long-Evans rats with a cinnamon-like coat color (LEC rats). However, the administration of excess TTM...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.04.001
更新日期:2010-08-01 00:00:00
abstract::The cysteine proteases of the trypanosomatid parasitic protozoa have been validated as targets for chemotherapy of Chagas' disease and leishmaniasis. Metal complexes of gold, platinum, iridium, palladium, rhodium and osmium have been reported to have activity against a variety of trypanosomatids, but the molecular tar...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2008.05.010
更新日期:2008-10-01 00:00:00
abstract::Selenium is an essential trace element for humans and other animals, and there is mounting evidence for the efficacy of certain forms of selenium as cancer-chemopreventive compounds. However, over the years, numerous elements such as As, Cu, Zn, Cd, Hg, Sn, Pb, Ni, Co, Sb, Bi, Ag, Au, and Mo have been found to inhibit...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2005.03.006
更新日期:2005-06-01 00:00:00
abstract::Aqueous solutions of the four highest vanadium oxidation states exhibit four diverse colors, which only hint at the diverse reactions that these ions can undergo. Cationic vanadium ions form complexes with ligands; anionic vanadium ions form complexes with ligands and self-react to form isopolyanions. All vanadium spe...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2014.12.009
更新日期:2015-06-01 00:00:00
abstract::Two new complexes [(Etdpa)MnCl(2)] and [(Adpa)Mn(Cl)(H(2)O)] (Etdpa = ethyl bis(2-pyridylmethyl)amino-2-propionate; Adpa = bis(2-pyridylmethyl)amino-2-propionic acid) were synthesized and characterized by spectral methods. The crystal structure of [(Etdpa)MnCl(2)] shows that the Mn(II) atom is coordinated by three N a...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.06.012
更新日期:2010-11-01 00:00:00