Journal ArticleDOI
Determination of stability constants of ternary copper(II) complexes formed with 2,6-pyridinedicarboxylic acid and several amino acids
Lino Hernández,Edgar Del Carpio,Waleska Madden,Giuseppe Lubes,Alejandro Pérez,Rafael E. Rodríguez-Lugo,Vanessa R. Landaeta,Mary Lorena Araujo,José Daniel Martínez,Vito Lubes +9 more
TLDR
In this article, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), 2,6-pyridinedicarboxylic acid (H2Dipi) and the amino acids was studied.Abstract:
In this work, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), 2,6-pyridinedicarboxylic acid (H2Dipi) and the amino acids = histidi...read more
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Speciation studies of binary and ternary complexes formed with oxidovanadium(IV) ion picolinic acid and some amino acids
Joel De Abreu,Edgar Del Carpio,Waleska Madden,Giuseppe Lubes,Mary Lorena Araujo,Vito Lubes,Lino Hernández +6 more
TL;DR: In this paper, the chemical speciation of ternary complexes systems formed by VO2+ion with picolinic acid with the amino acids α-alanine (αAla), glycine (HGly), serine (Ser), threonine (HT), and threonin (HT) was studied.
Journal ArticleDOI
Ternary complex formation of the nickel(II), 2,2’-bipyridine, 1,10’-Phenanthroline and some aminoacids
TL;DR: In this article, the results of a speciation study on the ternary complexes present in Ni(II)- 1,10 phenanthroline (Phen)-amino acids and Ni (II)- 2,2-bipyridine (Bipy) amino acids were reported.
Journal ArticleDOI
Binary and ternary nickel (II) complexes with picolinic acid and several amino acids
Alba Paz,Isis Caceres,Yola Fakhri,Yurgenis Henríquez,Mary Lorena Araujo,Vito Lubes,Lino Hernández +6 more
TL;DR: The results from a chemical speciation study of binary and ternary complexes formed by Ni(II) ion with picolinic acid and the amino acids are presented, based on the use of potentiometric data analysed with the least-squares program LETAGROP in 1 M NaCl aqueous solution at 25°C.
Journal ArticleDOI
Vanadium complexes with polypyridyl ligands: Speciation, structure and potential medicinal activity.
TL;DR: In this article , the interaction between the essential element vanadium with 1,10-phenanthroline and polypyridyl ligands is discussed. But vanadium-polypyridine complexes are not considered in this paper.
Journal ArticleDOI
Speciation study and biological activity of copper (II) complexes with picolinic and 6-methylpicolinic acid with different components of blood serum of low molecular mass in KNO3 1.0 mol·L−1 at 25 °C
TL;DR: In this article , the chemical speciation of ternary complexes of copper (II) with 6-methylpicolinic acid and different ligands, such as, components of the blood plasma of low molecular mass (lactic acid, oxalic acid, citric acid, and phosphoric acid) were studied by measurements of emf(H) in KNO 3 1.00 mol·L −1 .
References
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Journal ArticleDOI
A novel cytotoxic ternary copper(II) complex of 1,10-phenanthroline and L-threonine with DNA nuclease activity.
Shouchun Zhang,Yangguang Zhu,Chao Tu,Haiying Wei,Zhen Yang,Liping Lin,Jian Ding,Junfeng Zhang,Zijian Guo +8 more
TL;DR: The novel ternary copper(II) complex was shown to bind DNA by intercalation and cleave pBR322 DNA in the presence of ascorbate, and exhibited potent cytotoxic effects against human leukemia cell line HL-60 and human stomach cancer cell line SGC-7901 with inhibition rates of over 90%, however, less pronounced effects were observed.
Journal ArticleDOI
Oxidative cleavage of DNA by a dipyridoquinoxaline copper(II) complex in the presence of ascorbic acid.
Bidyut K. Santra,Pattubala A. N. Reddy,Girish Neelakanta,Subramony Mahadevan,Munirathinam Nethaji,Akhil R. Chakravarty +5 more
TL;DR: In this article, the triclinic space group P-1 with the unit cell parameters a=8.646(2) $\AA, b=12.290(5) \AA, c=14.283(4) ''AA'', α=94.69(2), β=91.60 (3)°, V=1481.7(8)''AA^3'' and Z=2.145(3)
Journal ArticleDOI
Copper storage diseases: Menkes, Wilsons, and cancer.
TL;DR: The chemical nature and biological roles of copper, Wilsons and Menkes disease and their therapies, and the use of copper related therapies in cancer are examined.
Journal ArticleDOI
X-ray structure of physiological copper(II)-bis(L-histidinato) complex.
TL;DR: The isolation and the X-ray crystal structure of physiological copper(II)-L-histidine complex are reported and the unique structural features help explain the origin of its thermodynamic stability and kinetic reactivity in human blood along with the ternary copper( II)-amino acid complexes.