Biological activity of some novel catiocic germanium and titanium metal based surfactants / S. M. I. Morsy in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 1/1009 (01-02/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 1/1009 (01-02/2009) . - p. 18-23 Titre : Biological activity of some novel catiocic germanium and titanium metal based surfactants Type de document : texte imprimé Auteurs : S. M. I. Morsy, Auteur ; J. M. Jajte, Auteur ; A. M. Badawi, Auteur Année de publication : 2009 Article en page(s) : p. 18-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : ADN -- Altération ADN -- Réparation Cations Germanium Micelles Tension superficielle Titane Toxicologie génétique Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Two new derivatives (A) and (B) of cationic germanium metal based surfactants have been synthesized. Their formulas are: [GeCl2(R)4]2+FeCl4 2– and [GeCl2(R\)4]2+SnCl4 2–·2H2O where R = hexamine and R\ = isothiouronium. A third derivative (C) of cationic titanium metal based surfactant was also synthesized and its formula is: [TiCl2(R\\)2]2+CoCl4 2–·6H2O where R\\ = triphenylphosphine. The presence of complex anions with metals was confirmed by inductive coupled plasma spectroscopy (ICP), IR spectrum and elemental analysis. Surface properties of the prepared surfactants, surface tension and critical micelle concentration were evaluated. Cytotoxic activities of these three metallo-surfactants were tested on human cell lines: leukemia lymphoblastic NALM-6 cells, promyelocytic HL-60 cells and breast adenocarcinoma MCF-7 cells. The obtained data revealed that the compound A did not exert cytotoxicity toward normal lymphocytes and was also inactive against all tumor cell lines tested. However, compounds B and C displayed high cytotoxicity in tumor cells and low toxicity in human normal lymphocytes, with concurrent high genotoxicity in all kinds of cells. All of these synthesized metallo-surfactants (A, B and C) induced oxidative DNA damage as detected by alkaline comet assay. Therefore, novel cationic germanium and titanium metal based surfactants (B and C) may be considered for use as anticancer drugs but further studies should be performed. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3716 [article]

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Synthesis of some novel sulfonamide derivatives and investigating their biocidal activity in cooling towers / A. M. Badawi in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 2/2011 (03-04/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 2/2011 (03-04/2011) . - p. 154-159 Titre : Synthesis of some novel sulfonamide derivatives and investigating their biocidal activity in cooling towers Type de document : texte imprimé Auteurs : A. M. Badawi, Auteur ; D. E. Mohamed, Auteur ; A. A. Hafiz, Auteur ; S. M. Ahmed, Auteur ; Y. M. Gohar, Auteur ; E. A. Soliman, Auteur ; M. S. A. Sanan, Auteur Année de publication : 2011 Article en page(s) : p. 154-159 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Sulfonamides Tour de refroidissement Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : A novel series of dibenzothiophenedioxide sulphonamide derivatives were synthesized and tested as antimicrobial agents. The chemical structures of the prepared compounds were confirmed by micro elemental analysis, fourier transform infrared (FT-IR) and proton nuclear magnetic resonance spectroscopy (H-NMR). The surface parameters of two of the prepared compounds were determined at 35 °C including, surface tension, effectiveness, maximum surface excess and minimum surface area. Also the standard free energy of micellization and adsorption were recorded. The results showed that the prepared sulphonamides have good surface properties and effective antimicrobial activity against thirty three test organisms isolated from cooling towers. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11133 [article]

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