Abstract
The current article deals with the preparation and characterisation of new organoruthenium(II) complexes, namely [RuCp(Dea-Sal-tsc)(PPh3)] (1), [RuCp(Dea-Sal-mtsc)(PPh3)] (2), [RuCp(Dea-Sal-etsc)(PPh3)] (3) and [RuCp(Dea-Sal-ptsc)(PPh3)] (4). The new ruthenium(II) complexes were characterized by various analytical, spectral techniques. The structure of the ligand [H2-Dea-Sal-tsc] and the complex [RuCp(Dea-Sal-tsc)(PPh3)] (1) were confirmed by X-ray crystallography. The complexes (1–4) were used to study the toxicity, stress resistance, aging and neuro-protective effects by taking Caenorhabditis elegans as model. In vitro free radical scavenging activity was performed by DPPH free radical scavenging assay, the complexes (1–4) exhibited highest scavenging activity than standard Vitamin C (IC50 = 5.28 ± 0.10). The lifespan has increased over 22.4% in mev-1 mutant worms treated with complex 4. The complex 4 triggered the DAF-16 nuclear localization, increases sod-3 expression and reduced amyloid (Aβ) protein induced paralysis were observed. In the present study we confirmed that oxidative stress resistance of N2 and lifespan extension of mev-1 mutant which showed the potential ROS scavenging activity of complex 4. The results also confirmed the effective anti-aging potential of ruthenium complex 4 which may be developed as a therapeutic drug for the prevention of aging and age related neurodegenerative diseases. Further studies are required to find out the exact action of complex 4 on higher model.
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