RT Journal Article SR Electronic T1 Tigecycline in-vitro susceptibility and antibiotics' fitness for gram-negative pathogens JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1558 OP 1560 VO 29 IS 11 A1 Arya, Subhash C. A1 Agarwal, Nirmala YR 2008 UL http://smj.org.sa/content/29/11/1558.abstract AB OBJECTIVE: To determine the tigecycline in-vitro susceptibility of naive gram-negative pathogens from serious infections in Delhi, India.METHODS: During July to October 2007 investigations were carried out to determine the tigecycline in vitro susceptibility of 50 consecutive gram-negative pathogens from serious infections at the Sant Parmanand Hospital, Delhi, India. Minimum tigecycline inhibitory concentrations were determined employing the E test method (AB Biodisk).RESULTS: Twenty-four percent of isolates were found to be tigecycline resistant or partly susceptible. Susceptibility of the isolates was lower than meropenem but similar to piperacillin-tazobactam, amoxicillin-clavulanic acid, and amikacin.CONCLUSION: Tigecycline resistance was prevalent in the gram-negative isolates from serious infections prior to its marketing in India. The choice of any recently marketed antibiotic for a pilot treatment against serious gram-negative infections should not be automatic. In the initial phase of its marketing, it should be evaluated in parallel with the antibiotics with excellent local susceptibility profiles.