Abstract：
:Commercially available chromium supplements were tested for their DNA cleavage ability compared with synthetic chromium(III) complexes, including chromium(III) tris-picolinate [Cr(pic)3], basic chromium acetate [Cr3O(OAc)6]+, model complexes, and recently patented Cr-complexes for use in supplements or therapy. Four different supplements (P1-P4) were tested for their DNA cleaving activity in the presence and the absence of H2O2, dithiothreitol (DTT) or ascorbate. One supplement, P1, showed nicking of DNA in the absence of oxidant or reductant at 120 microM metal concentration. Different lot numbers of P1 were also tested for DNA cleavage activity with similar results. Commercial supplements containing Cr(pic)3 nicked DNA at 120 microM metal concentrations in the presence of 5 mM ascorbate or with excess hydrogen peroxide, analogous to reactions with synthetic Cr(pic)3 reported elsewhere. Another chromium (non-Cr(pic)3) supplement, P2, behaves in a comparable manner to simple Cr(III) salts in the DNA nicking assay. Chromium(III) malonate [Cr(mal)2] and chromium(III) acetate [Cr(OAc)] can nick DNA in the presence of ascorbate or hydrogen peroxide, respectively, only at higher metal concentrations. The Cr(III) complexes of histidine, succinate or N-acetyl-L-glutamate do not nick DNA to a significant degree.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Chaudhary S,Pinkston J,Rabile MM,Van Horn JDdoi
10.1016/j.jinorgbio.2004.12.009subject
Has Abstractpub_date
2005-03-01 00:00:00pages
787-94issue
3eissn
0162-0134issn
1873-3344pii
S0162-0134(04)00414-3journal_volume
99pub_type
杂志文章abstract：:The reaction of aqueous native DNA (calf thymus) with the solvated organotin(IV) species [(CH3)2SnCl2(C2H5OH)n], as well as with [(CH3)2Sn(OH)(H2O)n]+ and (CH3)2Sn(OH)2 (i.e., the hydrolysis products of aqueous (CH3)2SnCl2 at pH approximately 5 and pH approximately 7.4 respectively), was investigated by 119Sn Mössbaue...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(91)85006-3
更新日期：1991-01-01 00:00:00
abstract：:A range of phosphorescent Ir(III) complexes containing four diverse P^P-chelating ligands of the type [Ir(ppy)2(L)][PF6], (ppy = 2‑phenylpyridine) where L is 1,2‑bis(diphenylphosphino)benzene (L1), 1,2‑bis(diphenylphosphino)ethane (L2), 1,2‑bis(diphenylphosphino)propane(L3) and 1,8‑bis(diphenylphosphino)naphthalene (L...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2019.110703
更新日期：2019-08-01 00:00:00
abstract：:Horse spleen ferritin (HoSF) reconstituted with small iron cores ranging in size from 8 to 500 iron atoms was studied by magnetic susceptibility and pH measurements to determine when the added Fe3+ begins to aggregate and form antiferromagnetically coupled clusters and also to determine the hydrolytic state of the iro...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(94)85004-6
更新日期：1994-11-15 00:00:00
abstract：:Quinoline antimalarial drugs such as chloroquine and related compounds are believed to act by targeting ferriprotoporphyrin IX (Fe(III)PPIX) in the form of hematin (H(2)O/HO-Fe(III)PPIX), its mu-oxo dimer ([Fe(III)PPIX](2)O) or crystalline beta-hematin ([Fe(III)PPIX](2)) in the malaria parasite. Fe(III)PPIX is formed ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.jinorgbio.2005.11.005
更新日期：2006-05-01 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：:Vanadium compounds exert various insulin-mimetic and anti-diabetic effects both in vitro and in vivo. Vanadium(III, IV, V)-chlorodipicolinate (Vdipic-Cl) compounds, including H[V(III)(dipic-Cl)2]·5H2O (V3dipic-Cl), V(IV)O(dipic-Cl)(H2O)2 (V4dipic-Cl) and K[V(V)O2(dipic-Cl)] (V5dipic-Cl), were synthesized with the indi...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2014.03.011
更新日期：2014-07-01 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：:In order to widen our knowledge on antitumour trans-[PtCl2(iminoether)2] complexes, we have synthesised two new derivatives, trans-[PtCl2¿E-HN = C(OEt)Me¿2] (1) and trans-[PtCl2¿Z-HN = C(OEt)Me¿2] (2), which differ in the configuration of the iminoether ligands. Isomer 1 showed an in vitro cytotoxicity similar to that...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(99)00139-7
更新日期：1999-10-01 00:00:00
abstract：:Copper(II) complexes with the non-steroidal anti-inflammatory drug diflunisal in the presence of N,N-dimethylformamide or nitrogen donor heterocyclic ligands (pyridine, 1,10-phenanthroline, 2,2'-bipyridine or 2,2'-bipyridylamine) have been synthesized and characterized. The deprotonated diflunisal ligands are coordina...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2011.09.004
更新日期：2011-12-01 00:00:00
abstract：:Since the 1970s, the biological role of vanadium compounds has been discussed as insulin-mimetic or insulin-enhancer agents. The action of vanadium compounds has been investigated to determine how they influence the insulin signaling pathway. Khan and coworkers proposed key proteins for the insulin pathway study, intr...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2020.111094
更新日期：2020-07-01 00:00:00
abstract：:We investigated new development in photodynamic therapy (PDT), aiming at enhanced tumor selectivity and biocompatibility, which included application of a third-generation photosensitizing agent, i.e. xanthene-origin Rose Bengal (RB) co-encapsulated with up-converting NaYF4 nanoparticles (NPs) co-doped with lanthanide ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2020.111088
更新日期：2020-07-01 00:00:00
abstract：:A series of new copper (II) complexes with 2-methyl-3-amino(3H)-quinazolin-4-one (MAQ) and various anions (Cl-, Br-, ClO(-)4, NO(-)3, SCN-, and SO(2-)4 was prepared. Their structures and properties were characterized by elemental analysis, IR, UV-Vis and ESR spectroscopy, molar conductivity, and magnetic moment measur...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(96)00122-5
更新日期：1997-02-15 00:00:00
abstract：:Heart tissue becomes zinc-depleted and the capacity to mobilize labile zinc is diminished, indicating zinc dyshomeostasis during ischemia/reperfusion (I/R). Apparently, zinc pyrithione restores the basal zinc levels during I/R and prevents apoptosis by activating phosphatidyl inositol-3-kinase/Akt and targeting mitoch...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2015.09.010
更新日期：2015-12-01 00:00:00
abstract：SYNOPSIS:MnII complexes formed with cis- and trans-DO2A (DO2A=1,4,7,10-tetraazacyclododecane-1,4 (or 1,7) -diacetic acid) chelators were investigated by pH-potentiometry, 1H relaxometry, UV-vis spectrophotometry and cyclic voltammetry. The physico-chemical characteristics of MnII complexes of these structure isomers do...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.07.018
更新日期：2016-10-01 00:00:00
abstract：:4-(2-Pyridylazo)resorcinol (PAR) is one of the most popular chromogenic chelator used in the determination of the concentrations of various metal ions from the d, p and f blocks and their affinities for metal ion-binding biomolecules. The most important characteristics of such a sensor are the molar absorption coeffic...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2015.08.024
更新日期：2015-11-01 00:00:00
abstract：:Industrial applications and environmental problems involving the aqueous chemistry of aluminium require an understanding of the speciation of this metal ion at a wide range of concentrations. The formation of polynuclear species is of special interest due to the complexity of the hydrolysis mechanisms and the diversit...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(01)00326-9
更新日期：2001-11-01 00:00:00
abstract：:Bovine calmodulin, spin-labeled at tyrosine-99, has been utilized in electron paramagnetic resonance (EPR) studies to investigate calmodulin interactions with Ca(II), Cd(II), and Mg(II). The addition of either Ca(II) or Cd(II) to apo-calmodulin results in a complex capable of activating target enzymes, such as 3', 5'-...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(90)84020-p
更新日期：1990-02-01 00:00:00
abstract：:During its metabolism, vanadium is known to become associated with the iron storage protein, ferritin. To elucidate probable vanadium binding sites on the protein, VO2+ binding to mammalian ferritins was studied using site-directed mutagenesis and EPR spectroscopy. VO2+-apoferritin EPR spectra of human H-chain (100% H...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(00)00046-5
更新日期：2000-05-30 00:00:00
abstract：:The reaction of [Mn{SSi(OBu(t))3}2(MeOH)4] with imidazole and its two methyl substituted derivatives leads to different types of heteroleptic manganese(II) thiolate complexes. Reaction with 1-methylimidazole gives the silanethiolate devoid of methanol but with two nitrogen ligands and thus central MnN(2)S(2) core. The...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.11.023
更新日期：2007-04-01 00:00:00
abstract：:Prochloron, a blue-green algae belonging to ancient prokaryotes, produces, like other cyanobacteria, cyclic pseudo-peptides, which are also found in its obligate symbiont ascidiae (Lissoclinum patellum). Although research has focused for some time on the putative metabolic function of these cyclic peptides, to date it...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.02.014
更新日期：2016-06-01 00:00:00
abstract：:Acute promyelocytic leukemia (APL) is characterized and driven by the promyelocytic leukemia protein-retinoic acid receptor alpha (PML-RARα) fusion gene. Previous studies have highlighted the importance of PML-RARα degradation in the treatment against APL. Considering the presence of two zinc fingers in the PML-RARα f...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2017.07.007
更新日期：2017-10-01 00:00:00
abstract：:The energy diagram for the catalytic cycle of dioxygen evolution in photosystem II has been recomputed using a slightly different model than the one used previously, since the results showed an erroneous trend in the critical region from S(2) to S(3). By replacing the bicarbonate ligand, which was bridging between cal...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.02.007
更新日期：2006-05-01 00:00:00
abstract：:The antiproliferative properties of a series of structurally-related gold(I) and silver(I) linear complexes inspired to the clinically established gold-based drug auranofin were investigated in A2780 ovarian cancer cells and in their auranofin (A2780/AF-R) and cisplatin (A2780/CDDP-R) resistant counterparts. In A2780 ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2020.111079
更新日期：2020-07-01 00:00:00
abstract：:The reaction of Mycobacterium tuberculosis KatG and the mutant KatG(S315T) with two different organic peroxides is studied using resonance Raman spectroscopy. For the first time, an intermediate is observed in a catalase-peroxidase with vibrations that are characteristic of Compound II. The observation of this interme...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2005.03.016
更新日期：2005-06-01 00:00:00
abstract：:Ruthenium polypyridyl complexes may act as light-activatable anticancer prodrugs provided that they are protected by well-coordinated ligands that i) prevent coordination of other biomolecules to the metal center in the dark and ii) can be removed by visible light irradiation. In this paper, the use of monodentate thi...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2015.05.010
更新日期：2015-09-01 00:00:00
abstract：:The kinetics of the reaction of chloroperoxidase with peroxynitrite was studied under neutral and acidic pH by stopped-flow spectrophotometry. Chloroperoxidase catalyzed peroxynitrite decay with the rate constant, k(c,) increasing with decreasing pH. The values of k(c) obtained at pH 5.1, 6.1 and 7.1 were equal to: (1...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.09.007
更新日期：2007-01-01 00:00:00
abstract：:The pH- and time-dependent reactions of the anticancer drug cisplatin, cis-[PtCl(2)(NH(3))(2)], with the peptides Ac-Gly-Met-Gly-OH, Ac-Ser-Met-OH and Ac-Met-His-OH (Gly=glycyl, Met=methionyl, Ser=seryl, His=histidyl) at 313 K have been investigated by high-performance liquid chromatography, nuclear magnetic resonance...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2004.08.016
更新日期：2004-11-01 00:00:00
abstract：:Three-week-old Picea abies seedlings were grown for 7 days in 100 microM aluminium (Al), combined with 1000 or 2000 microM silicon (Si). Solution pH was adjusted to 4.00, 4.25, 4.50, 4.75, or 5.00. In the absence of Si, solution pH had no effect on the decrease in root growth caused by 100 microM Al. Silicon did not a...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(03)00181-8
更新日期：2003-09-15 00:00:00
abstract：:HIF prolyl-4-hydroxylase 2 (PHD2) is a non-heme Fe, 2-oxoglutarate (2OG) dependent dioxygenase that regulates the hypoxia inducible transcription factor (HIF) by hydroxylating two conserved prolyl residues in N-terminal oxygen degradation domain (NODD) and C-terminal oxygen degradation domain (CODD) of HIF-1α. Prior s...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.05.006
更新日期：2013-09-01 00:00:00
abstract：:The psychrophilic, hydrocarbonoclastic microorganism Colwellia psychrerythraea is important in global nutrient cycling and bioremediation. In order to investigate how this organism can live so efficiently at low temperatures (~4°C), thermal denaturation studies of a small electron transfer protein from Colwellia were ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.11.002
更新日期：2014-02-01 00:00:00
