Selective pressure mediated by the intensive use of antibiotics (both human and non-human) and several mechanisms for genetic transfer could have contributed to the rapid dispersal of antibiotic resistance in the community [1]. Antibiotics target both pathogenic bacteria as well as normal commensal flora, represented by skin, gut, and upper respiratory tract [2]. Current strategies to monitor the presence of antibiotic resistance in bacteria mainly rely upon examining resistance in pathogenic organisms and involve only periodic cross-sectional evaluations of resistance in the commensal
flora [3, 4]. Resistance RGFP966 amongst the commensal flora is a serious threat because a very highly populated ecosystem like the gut may at later stage be source of extra intestinal infection which may spread to other host or transfer genetic resistance element/s to other members of micro-biota including pathogens [5]. Despite this, there is paucity of data regarding the dynamics of antibiotic resistance in commensals. β-lactam antibiotics are the most commonly used antibiotics in community as well as hospitals. They are generally characterized by their favorable safety and tolerability profile as well as their broad spectrum activity [6]. The ever increasing variety of β-lactamases raises serious concern
about our dependence on β-lactam drugs. see more Rapidly emerging β-lactamases include diverse ESBL, PLX 4720 AmpC β-lactamases, and carbapenem-hydrolyzing β-lactamases. ESBL producing Enterobacteriaceae were initially associated with nosocomial infections, however, recent studies indicate significant increase in the community isolates [7]. The risk posed by community circulation of the multidrug resistant bacteria is emphasized by the high concentration of ESBL in the community as well as the hospital onset intra-abdominal infections [8]. The rapid dissemination of ESBL’s in community may drive excessive use of carbapenems. The recent
report of Carbapenem resistance due to dissemination of NDM-1 β-lactamase producing bacteria Liothyronine Sodium in the environmental samples and key enteric pathogens in New Delhi, India may have serious health implications [9]. Several studies have been conducted to assess the risk factors associated with colonization and infection caused by ESBL producing Enterobacteriaceae, which include antibiotic use, travel, contact with healthcare system and chronic illness [10, 11]. Gut colonization in neonates with no direct antibiotic pressure were used as a model to evaluate β-lactam resistance in the community in absence of selection pressure. Methods Design overview, setting, and participants In this prospective study all low birth weight neonates (LBW) (≥1500 to <2500 g) born at the Safdarjung Hospital, New Delhi, India (2009–2011) were eligible and enrolled to study ‘Effect of Probiotic VSL#3 on prevention of sepsis during 0–2 month period’.