Enhancers for microbiological disinfection and targeted...

A - Human Necessities – 61 – K

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A61K 47/12 (2006.01) A01N 1/02 (2006.01) A61K 31/136 (2006.01) A61K 31/19 (2006.01) A61K 31/54 (2006.01) A61K 31/57 (2006.01) A61K 31/79 (2006.01) A61K 33/18 (2006.01) A61K 38/14 (2006.01) A61P 31/00 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2426360

Simple carboxylic acids, in particular dicarboxylic acids such as citric acid shows an unexpected ability to enhance the antimicrobial power of a wide range of disinfectant and/or antibiotic agents. As little as 1 % citrate greatly enhances the ability of antibiotics to kill or inhibit a wide range of bacterial species including antibiotic resistant strains. Citrate alone is effective in preventing bacterial growth in platelet concentrates and in red blood cell suspensions. Effective concentrations of citrate cause little if any damage to blood cells. Besides enhancing the power of antibiotics citrate also enhances the antimicrobial properties of disinfectant organic dyes such as crystal violet and methylene blue. In addition citrate enhances the antimicrobial properties of polyphenols of plant origin. Iodine-based disinfectants are also enhanced without enhancing protein denaturation. In addition, citrate also enhances the ability of glucocorticoids to augment apoptosis of lymphoid cells.

L'invention concerne des acides carboxyliques simples, en particulier des acides dicarboxyliques tels que l'acide citrique présentant une capacité inattendue d'activation du pouvoir antimicrobien d'une grande variété d'agents désinfectants et/ou antibiotiques. Il suffit de seulement 1 % de citrate pour activer fortement la capacité des antibiotiques de tuer ou d'inhiber une grande variété d'espèces bactériennes comportant des souches résistantes aux antibiotiques. Le citrate seul est efficace pour prévenir la croissance bactérienne dans des concentrés de plaquettes et dans des suspensions de globules rouges. Des concentrations efficaces de citrate ne causent que peu de dommages, si tant est qu'elles en causent, aux globules rouges. Outre le fait qu'il active le pouvoir des antibiotiques, le citrate active également les propriétés antimicrobiennes de colorants organiques désinfectants tels que le violet de gentiane ou le bleu de méthylène. De plus, le citrate active les propriétés antimicrobiennes de polyphénols d'origine végétale. Des désinfectants à base d'iode sont également activés, sans qu'il y ait d'activation de dénaturation protéinique. Enfin, le citrate active également la capacité de glucocorticoïdes d'augmenter l'apoptose de cellules lymphoïdes.

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