Title:Efflux-mediated Multidrug Resistance in Critical Gram-negative Bacteria
and Natural Efflux Pump Inhibitors
Volume: 16
Issue: 3
Author(s): Praveena Nanjan*Vanitha Bose
Affiliation:
- Department of Biochemistry, School of Life Science, Jss Academy of Higher Education and Research, Longwood Campus, Mysuru Road, Ooty, India
Keywords:
Multidrug-resistance, critical gram-negative bacteria, efflux pumps, combination therapies, natural efflux pump inhibitors, novel drugs.
Abstract: Multidrug Resistance mechanisms in microorganisms confer the slackness of the
existing drugs, leading to added difficulty in treating infections. As a consequence, efficient
novel drugs and innovative therapies to treat MDR infections are necessarily required. One of
the primary contributors to the emergence of multidrug resistance in gram-negative bacteria has
been identified as the efflux pumps. These transporter efflux pumps reduce the intracellular
concentration of antibiotics and aid bacterial survival in suboptimal low antibiotic concentration
environments that may cause treatment failure. The reversal of this resistance via inhibition of
the efflux mechanism is a promising method for increasing the effectiveness of antibiotics
against multidrug-resistant pathogens. Such EPI, in combination with antibiotics, can make it
easier to reintroduce traditional antibiotics into clinical practice. This review mostly examines
efflux-mediated multidrug resistance in critical gram-negative bacterial pathogens and EPI of
plant origin that have been reported over previous decades.