Publications by authors named "Venugopal Sujatha"

2 Publications

  • Page 1 of 1

Selenium nanoparticles synthesized in aqueous extract of Allium sativum perturbs the structural integrity of Calf thymus DNA through intercalation and groove binding.

Mater Sci Eng C Mater Biol Appl 2017 May 7;74:597-608. Epub 2017 Feb 7.

Department of Biochemistry and Molecular Biology, Pondicherry University, Puducherry 605 014, India. Electronic address:

Biomedical application of selenium nanoparticles (SeNPs) demands the eco-friendly composite for synthesis of SeNPs. The present study reports an aqueous extract of Allium sativum (AqEAS) plug-up the current need. Modern spectroscopic, microscopic and gravimetric techniques were employed to characterize the synthesized nanoparticles. Characterization studies revealed the formation of crystalline spherical shaped SeNPs. FTIR spectrum brings out the presence of different functional groups in AqEAS, which influence the SeNPs formation and stabilization. Furthermore the different aspects of the interaction between SeNPs and CT-DNA were scrutinized by various spectroscopic and cyclic voltametric studies. The results reveals the intercalation and groove binding mode of interaction of SeNPs with stacked base pair of CT-DNA. The Stern-Volmer quenching constant (K) were found to be 7.02×10M- (ethidium bromide), 4.22×10 M- (acridine orange) and 7.6×10M- (Hoechst) indicating strong binding of SeNPs with CT-DNA. The SeNPs - CT-DNA interactions were directly visualized by atomic force microscopy. The present study unveils the cost effective, innocuous, highly stable SeNPs intricate mechanism of DNA interaction, which will be a milestone in DNA targeted chemotherapy.
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May 2017

Recuperative effect of Semecarpus anacardium linn. nut milk extract on carbohydrate metabolizing enzymes in experimental mammary carcinoma-bearing rats.

Phytother Res 2002 Mar;16 Suppl 1:S14-8

Department of Medical Biochemistry, University of Madras Taramani Campus, Chennai - 600 113, India.

Semecarpus anacardium Linn. of the family Anacardiaceae has many applications in the Ayurvedic and Siddha systems of medicine. We have tested the antitumour activity of Semecarpus anacardium nut extract against experimental mammary carcinoma in animals. As there is a direct relationship between the proliferation of tumour cells and the activities of the glycolytic and gluconeogenic enzymes, we studied changes in the activities of enzymes involved in this metabolic pathway in the liver and kidney. The enzymes investigated were glycolytic enzymes, namely hexokinase, phosphoglucoisomerase, aldolase and the gluconeogenic enzymes, namely glucose-6-phosphatase and fructose-1,6-biphosphatase in experimental rats. A significant rise in glycolytic enzyme activities and a simultaneous fall in gluconeogenic enzyme activities were found in mammary carcinoma bearing rats. Drug administration returned these enzyme activities to their respective control activities.
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March 2002