Possible signaling cascades involved in attenuation of alloxan-induced oxidative stress and hyperglycemia in mice by ethanolic extract of Syzygium jambolanum: Drug-DNA interaction with calf thymus DNA as target

2011 ◽  
Vol 44 (3) ◽  
pp. 207-217 ◽  
Author(s):  
Asmita Samadder ◽  
Debrup Chakraborty ◽  
Arnab De ◽  
Soumya Sundar Bhattacharyya ◽  
Kakali Bhadra ◽  
...  
Author(s):  
Cleiton M. da Silva ◽  
Marina M. Silva ◽  
Fabiano S. Reis ◽  
Ana Lúcia T.G. Ruiz ◽  
João E. de Carvalho ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Partha Sarathi Guin ◽  
Piyal Das ◽  
Saurabh Das ◽  
Parikshit Chandra Mandal

Hydroxy-9,10-anthraquinones are cheaper alternatives to anthracycline drugs. They closely resemble anthracycline drugs both from a structural and functional viewpoint. Electrochemical behavior of the Ni(II) complex (Na2[Ni(NaLH)2Cl2]⋅2H2O) of sodium 1,4-dihydroxy-9,10-anthraquinone-2-sulphonate (NaLH2), analogue of the core unit of anthracycline anticancer drugs, was studied at physiological pH using cyclic voltammetry. The Ni(II) complex of sodium 1,4-dihydroxy-9,10-anthraquinone-2-sulphonate undergoes diffusion-controlled one-electron reduction that enables performing an electrochemical study on the interaction of the complex with calf thymus DNA. The complex was titrated with increasing concentrations of DNA, and the reduction peak for the unbound complex helped in evaluating binding parameters. Analysis of binding data using nonlinear curve fit in a cyclic voltammetry experiment is the first such attempt. The paper evaluates site size of interaction that also serves as a means to determine stoichiometry of complex formation, between a metal ion and ligand from a DNA interaction study, probably a first of its kind.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Partha Sarathi Guin ◽  
Saurabh Das

Electrochemical behavior of the anticancer drug doxorubicin hydrochloride was studied using cyclic voltammetry in aqueous medium using Hepes buffer (pH~7.4). At this pH, doxorubicin hydrochloride undergoes a reversible two-electron reduction withE1/2value −665±5 mV (versus Ag/AgCl, saturated KCl). Depending on scan rates, processes were either quasireversible (at low scan rates) or near perfect reversible (at high scan rates). This difference in behavior of doxorubicin hydrochloride with scan rate studied over the same potential range speaks of differences in electron transfer processes in doxorubicin hydrochloride. Attempt was made to identify and understand the species involved using simulation. The information obtained was used to study the interaction of doxorubicin hydrochloride with calf thymus DNA. Cathodic peak current gradually decreased as more calf thymus DNA was added. The decrease in cathodic peak current was used to estimate the interaction of the drug with calf thymus DNA. Nonlinear curve fit analysis was applied to evaluate the intrinsic binding constant and site size of interaction that was compared with previous results on doxorubicin hydrochloride-DNA interaction monitored by cyclic voltammetry or spectroscopic techniques.


2014 ◽  
Vol 118 (46) ◽  
pp. 13151-13161 ◽  
Author(s):  
Abdulla Al Masum ◽  
Maharudra Chakraborty ◽  
Prateek Pandya ◽  
Umesh Chandra Halder ◽  
Md. Maidul Islam ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63271-63285 ◽  
Author(s):  
Jagadeesan Ramesh ◽  
Subramaniam Sujatha ◽  
Chellaiah Arunkumar

trans-Dicationic pyridinium porphyrins are superior artificial nucleases compared to their non-fluorinated analogues and bind with calf thymus DNA by outside groove binding with or without self-stacking, also show significant antimicrobial activities.


2021 ◽  
Author(s):  
Prayasee Baruah ◽  
Pynskhemborlang Tep Phanrang ◽  
Ibemhanbi Konthoujam ◽  
Kripamoy Aguan ◽  
Sivaprasad Mitra

Conformational alterations in the structure of deoxyribonucleic acid (DNA) due to oxidative stress in the DNA backbone are known to be at the root of many life-threatening diseases. Clear comprehension...


2018 ◽  
Vol 64 (7) ◽  
pp. 1
Author(s):  
Abbas Hemati Azandaryani ◽  
Ali Barati ◽  
Mohsen Shahlaei ◽  
Mojtaba Shamsipur ◽  
Sajad Moradi ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document