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Abstract - In-vitro susceptibility of multiple drug resistant Pseudomonas aeruginosa to organic acids
Basavraj S Nagoba, Bharat Wadher, Sohan Selkar

Objective: Pseudomonas aeruginosa is a classic opportunistic pathogen with innate resistance to many antibiotics and disinfectants. Resistance to antimicrobial agents makes it the most noxious organism to eliminate from infection site. In view of its antimicrobial resistance, an attempt was made to study its susceptibility to various organic acids.

Methods: Seven clinical isolates of P.aeruginosa resistant to multiple antibiotics were subjected to in vitro susceptibility to various organic acids by broth dilution method to find out susceptibility to various organic acids.

Results: The isolates of P.aeruginosa resistant to 14 antimicrobials were found susceptible to one percent oxalic acid and trichloroacetic acid, two percent lactic acid and citric acid, and three percent acetic acid. It is interesting to note that strains resistant to multiple antibiotics were also found susceptible to organic acids. Oxalic acid and trichloroacetic acid were found highly effective.

Conclusions: Clinical use of oxalic acid, trichloroacetic acid and lactic acid as topical agents to treat superficial pseu­domonal infections caused by difficult strains of P.aeruginosa may be recommended after confirmation of their toxicity and in vivo efficacy in animal models. J Microbiol Infect Dis 2013; 3(2): 67-70

Key words: Pseudomonas aeruginosa, Multiple Antibiotic Resistance, Susceptibility to Organic Acids.

Volume 03, Number 02 (2013)