scholarly journals Spectroscopic Characterization, In Vitro Cytotoxicity, and Antioxidant Activity of Mixed Ligand Palladium(II) Chloride Complexes Bearing Nucleobases

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Samuel Tetteh ◽  
David K. Dodoo ◽  
Regina Appiah-Opong ◽  
Isaac Tuffour
Keyword(s):  
Antioxidant Activity ◽  
Spectroscopic Characterization ◽  
Positive Control ◽  
In Vitro Cytotoxicity ◽  
Mixed Ligand ◽  
Planar Geometry ◽  
Chloride Complexes ◽  
Spectrophotometric Methods ◽  
H Nmr

Mixed-ligand palladium(II) chloride complexes bearing the nucleobases, adenine (Ad), cytosine (Cyt), and guanine (Gua), have been synthesized and characterized by UV-vis spectrophotometric methods, magnetic susceptibility, molar conductivity, elemental analysis, FTIR, and 1H-NMR. The complexes were found to have the composition cis-[PdCl2(Gua)(Cyt)], cis-[PdCl2(Ad)(Cyt)], and cis-[PdCl2(Ad)(Gua)]. A four-coordinated square-planar geometry is proposed for these Pd(II) complexes based on magnetic evidence and electronic spectra. The complexes as well as the free nucleobase ligands were tested for their in vitro cytotoxicity on human promyelocytic leukemia (HL60) and human histiocytic leukemia (U937) cell lines. cis-[PdCl2(Ad)(Gua)] showed IC50 values of 11.29 ± 2.91 and 8.31 ± 1.44 μM against HL60 and U937, respectively, which was higher than that of the positive control (curcumin) against U937. The complexes also showed significant antioxidant activity when tested against 2,2-diphenyl-1-picrylhydrazylradical (DPPH).

scholarly journals Synthesis, Spectroscopic Characterization, Antibacterial and Short Term in vitro Cytotoxicity Studies of Copper(II) Complexes of Novel Tridentate N,N,S Donor Ligand 2-Benzoylpyridine-N(4),N(4)-(N,N-diethyl-N-methylamine-2,2'-diyl)thiosemicarbazone

2019 ◽  
Vol 31 (10) ◽  
pp. 2269-2274
Author(s):  
Janey Mary Mathew ◽  
Varughese Philip ◽  
Jesty Thomas
Keyword(s):  
Spectroscopic Characterization ◽  
Positive Control ◽  
In Vitro Cytotoxicity ◽  
Planar Geometry ◽  
Blue Dye ◽  
Short Term ◽  
Donor Ligand ◽  
Cytotoxicity Studies ◽  
Uv Visible

A tridentate N,N,S-donor ligand, 2-benzoylpyridine-N(4),N(4)-(N,N-diethyl-N-methylamine-2,2'-diyl)thiosemicarbazone (Hbptsc) has been synthesized and characterized by elemental CHN analysis, UV-visible, FT-IR and 1H NMR spectroscopy. Copper(II) complexes of the ligand, Hbptsc synthesized have been characterized by elemental analysis, UV-visible spectra, FTIR spectra and EPR spectroscopic simulation. The complexes hold the stoichiometry of the type [CuLX] where X= Cl (1), NO3 (2), SO4 (3), N3 (4), SCN (5) confirmed by the molar conductivity studies of 10-3 M solutions in DMF at room temperature. The EPR spectra of the complexes recorded in DMF at 77 K shows an axial type spectra with two distinct g-values, g|| and g⊥ indicating a four coordinated planar geometry. The antimicrobial studies of the copper(II) complexes shows an appreciable activity against both gram positive and gram negative bacteria using streptomycin as positive control. The short term in vitro cytotoxicity studies following trypan blue dye exclusion method exhibits pronounced activity against the Dalton’s Lymphoma Ascites tumour cells extruded from the peritoneal cavity of mice.

Isolation, spectroscopic characterization, X-ray, theoretical studies as well as in vitro cytotoxicity of Samarcandin

2016 ◽  
Vol 66 ◽  
pp. 27-32 ◽  
Author(s):  
Salar Hafez Ghoran ◽  
Vahideh Atabaki ◽  
Esmaeil Babaei ◽  
Seyed Reza Olfatkhah ◽  
Michal Dusek ◽  
...  
Keyword(s):  
Spectroscopic Characterization ◽  
In Vitro Cytotoxicity ◽  
Theoretical Studies ◽  
X Ray

Cytotoxicity and Antitumor Activity of Platinum(II) Complexes of Aromatic and Cycloalkanecarboxylic Acid Hydrazides

1997 ◽  
Vol 52 (1-2) ◽  
pp. 49-54 ◽  
Author(s):  
Daniel N. Kushev ◽  
Nadejda C. Spassovska ◽  
Svetoslav I. Taxirov ◽  
Konstantin C. Grancharov
Keyword(s):  
Antitumor Activity ◽  
Acid Hydrazide ◽  
In Vitro Cytotoxicity ◽  
Macromolecular Synthesis ◽  
H Nmr ◽  
Antineoplastic Effect ◽  
In Vivo Antitumor Activity ◽  
Friend Leukemia

AbstractNew platinum(II) complexes of cyclohexanecarboxylic acid hydrazide (chcah) were synthesized and characterized by elemental analysis, IR. and 1H NMR spectra. Their inhibitory effects on cell growth and macromolecular synthesis of Friend leukemia cells in culture as well as the in vivo antitumor activity towards L1210 leukemia in mice were compared with those of complexes containing differently substituted aromatic acid hydrazides. Some of the complexes exhibited antineoplastic activity. No correlation between the in vitro cytotoxicity and the in vivo antitumor activity was found. However, there was a relationship between the in vitro macromolecular synthesis inhibition profile and the in vivo antineoplastic effect, similar to that of cisplatin. On the other hand, only agents containing one ammine ligand were active in vivo. The substitution of the aromatic ring by a cycloalkane residue increased significantly the antitumor effect, with [Pt(NH3)(chcah)Cl2] being the most active compound in this study.

New binuclear Ni(ii) metallates containing ONS chelators: synthesis, characterisation, DNA binding, DNA cleavage, protein binding, antioxidant activity, antimicrobial and in vitro cytotoxicity

2017 ◽  
Vol 41 (7) ◽  
pp. 2543-2560 ◽  
Author(s):  
G. Kalaiarasi ◽  
Ruchi Jain ◽  
H. Puschman ◽  
S. Poorna Chandrika ◽  
K. Preethi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Dna Binding ◽  
Protein Binding ◽  
Hela Cell ◽  
Antiproliferative Activity ◽  
Dna Cleavage ◽  
In Vitro Cytotoxicity ◽  
Hela Cell Lines ◽  
Mcf 7

Four new binuclear nickel(ii) metallates showed promising antiproliferative activity against MCF-7 and HeLa cell lines and were much less toxic against HaCaT.

scholarly journals Synthesis and biological evaluation of Piroxicam derivative as a lead chelator

2019 ◽  
Vol 42 (1) ◽  
pp. 73-80
Author(s):  
Sayed Masoud Hosseini ◽  
Ali Imani ◽  
Milad Rahimzadegan ◽  
Saeid Mohammadi ◽  
Alireza Golaghaei
Keyword(s):  
Antioxidant Activity ◽  
Lead Nitrate ◽  
Lead Toxicity ◽  
Biological Evaluation ◽  
Lead Ion ◽  
H Nmr ◽  
Chelating Activity ◽  
Synthesis And Biological Evaluation ◽  
Toxicity In Vitro

Abstract Lead as a potent environmental and occupational pollutant, exerts its toxic effect mainly through oxidative stress induction. Currently, chelation therapy is the only medical management of metal intoxications in clinic, but its administration is associated with various side effects as well. In this study the protective effect of synthetized Piroxicam derivative was evaluated against lead toxicity in vitro. First the chelating activity of Piroxicam derivative was studied through Jobs method and 13C{1H} NMR spectroscopy. Then the cytoprotective effect of Piroxicam derivative (10, 20, 50, 100 and 200 μg/mL) was evaluated and compared with that of EDTA (30 μg/mL) in the presence of lead nitrate (30 μg/mL). The EC50 value of Piroxicam derivative was calculated as well. Finally, the chelation efficacy and antioxidant effects of Piroxicam derivative in EC50 and 2EC50 values was assessed and compared with that of EDTA. Results showed that Piroxicam derivative chelates lead ion as much as EDTA. Moreover, Piroxicam derivative prevented lead-induced cells death more effectively than EDTA which is may due to its potent innate antioxidant activity. In conclusion, the synthetized Piroxicam derivative with possessing potent chelating activity as well as potent antioxidant activity, could be considered as potential drug target in management of toxic metals poisoning.

scholarly journals LOWERING URIC ACID EFFICACY TEST OF THE COMBINED EXTRACT OF UNCARIA GAMBIR (HUNTER) ROXB. AND CAESALPINIA SAPPAN L. IN VIVO AND IN VITRO

2018 ◽  
Vol 11 (8) ◽  
pp. 166
Author(s):  
Sri Ningsih ◽  
Fahri Fahrudin
Keyword(s):  
Antioxidant Activity ◽  
Uric Acid ◽  
Inhibitory Activity ◽  
Positive Control ◽  
Polyphenol Content ◽  
Caesalpinia Sappan ◽  
In Vivo Experiments ◽  
A Value

 Objective: Hyperuricemia (high uric acid levels) prevalence increased year by year. This study was aimed to elaborate the in vitro xanthine oxidase (XO) inhibitory activity and in vivo lowering hyperuricemic effect of Uncaria gambir (Hunter) Roxb) (gambir), Caesalpinia sappan L. (secang) and the combined extract of secang and gambir (formulae extract [FE]).Methods: Gambir and secang extracts were prepared by maceration with ethanol and FE was the proportioned combination of these two extracts. XO inhibitory activity was determined by measuring the formation of uric acid in the xanthine/XO system in vitro using allopurinol as a positive control at 100 ug/mL. Antioxidant activity was by 1,1-diphenyl-2-picrylhydrazyl radical reducing methods. The in vivo experiments were conducted in the oxonate-induced hyperuricemia rat model, in which FE was gavaged p.o. at the arrange dose of 75, 150, and 300 mg/kg bw for 2 weeks. Polyphenol content was measured using Folin–Ciocalteu reagent spectrophotometrically.Results: The XO inhibitory activity of FE was 80% of allopurinol, while secang and gambir were 98% and 50%, respectively. The strength was appropriate to the total polyphenol content, in which it decreased in the order of secang (99%) > FE (86%) > gambir (46%). Furthermore, FE at all tested doses was able to decrease uric acid levels. FE also demonstrated antioxidant activity with a value of 74% relative to Vitamin C at 4 ug/mL.Conclusion: These studies could be concluded that FE exhibited the ability to decrease uric acid level so that it was potential to be developed further as a uric acid-lowering agent.

scholarly journals Actinidia macrospermaC. F. Liang (a Wild Kiwi): Preliminary Study of Its Antioxidant and Cytotoxic Activities

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Yin Lu ◽  
Xiangtao Du ◽  
Lidan Lai ◽  
Hao Jin
Keyword(s):  
Antioxidant Activity ◽  
Cytotoxic Activity ◽  
Biological Activities ◽  
Positive Control ◽  
Total Phenolic ◽  
Cytotoxic Activities ◽  
Dependent Manner ◽  
Etoac Extract ◽  
Total Antioxidant

The antioxidant potential ofActinidia macrospermaC. F. Liang (Actinidiaceae) was investigated in vitro for total phenolic content, along with total antioxidant activity (TAA), 1,1-diphenyl 2-picryl hydrazyl (DPPH), and lipid peroxidation (LP). The results indicated that different polarity extracts ofA. macrospermaexhibit different biological activities, which depends mainly on the presence of phenolic compounds. The antioxidant activity was in the following decreasing order: MeOH extract > EtOAc extract > aqueous extract > CHCl3extract > Hexane extract. Moreover, the cytotoxic activity of this plant by MTT dye assay using SMMC-7721 has been determined also. The hexane, EtOAc, and CHCl3extracts showed cytotoxicity in a dose-dependent manner. Methanol and aqueous extracts, however, showed weak activities in this test. And a very significant cytotoxic activity, not significantly different from the positive control of quercetin, was observed in CHCl3extract.

scholarly journals Antioxidant and Hypoglycemic Properties of Seeds of Cucurbitaceae Family from Western Nepal

2019 ◽  
Vol 9 (2) ◽  
pp. 1-5
Author(s):  
Atisammodavardhana Kaundinnyayana ◽  
Anita G.C ◽  
Asmita Banstola ◽  
Kishwor Poudel ◽  
Nirmal Acharya ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Positive Control ◽  
Lagenaria Siceraria ◽  
Benincasa Hispida ◽  
Ic50 Values ◽  
In Vitro Antioxidant Activity

Introduction: Diabetes mellitus is an endocrine and metabolic disorder characterized by the defect in insulin secretion or insulin action or both. The association between diabetes mellitus and oxidative stress is well established. Cucurbitaceae is the largest family containing 120 genera mostly grown for its sweet and juicy fruit in warm climates all over the world. In the present work ethanolic extracts of the seeds of Trichosanthes cucumerina Linn (Chichinno), Lagenaria siceraria (Lauka), Cucurbita pepo (Pharsi), Luffa aegiptiaca (Ghiraula), and Benincasa hispida (Kubindo) collected from Western Nepal has been evaluated for their in vitro antioxidant activity and in vivo hypoglycemic effects. Methods: In vitro antioxidant activity was assessed by using DPPH free radical scavenging activities and their IC50 values were calculated. In vivo hypoglycemic effect was examined on normoglycemic rats. The clinical significance of ethanolic extract at the doses of 250 and 500 mg/kg body weight was investigated in 0, 30, 60, 120 and 180 minutes of oral administration. Metformin treated group was used as the positive control. Results: For DPPH radical scavenging action, the IC50 values of Trichosanthes cucumerina, Luffa aegiptiaca, Benincasa  hispida, Cucurbita pepo, Lagenaria siceraria were found to be 60.72, 127.73, 49.63, 98.16 and 52.46 µg/ml respectively which were compared to the IC50 value of ascorbic acid (Positive control) which was found to be 38.11 µg/ml. The extracts of Benincasa hispida, and were having higher antioxidant activity and tested for in vivo hypoglycemic activity.In vivo administration of two doses of ethanolic extract of Lagenaria siceraria reduced the level of blood glucose while the best result was obtained at 250 mg/kg. Conclusions: Present study revealed promising antioxidant and hypoglycemic activity of ethanolic extract of Lagenaria siceraria. The further exploration of Lagenaria siceraria for its effective use in the traditional medicinal system is essential.

Sign in / Sign up

Export Citation Format

Share Document