Cell-Cell Communication (Quroum Sensing) in Gram-Negative and Gram-Positive Bacteria: A Review Mohammed Ghaidaa J.1,*, Al-Mayahi Firas S. Abd1, Kadhum Habeeb W.1, Muhsen Ali B.1 1Department of Biology, College of Science, University of Al-Qadisiyah, Al-Diwaniyah, Iraq *Corresponding author: Ghaidaa J. Mohammed. Department of Biology, College of Science, University of Al-Qadisiyah, Al-Diwaniyah, Iraq; E-mail: ghaidaa.mohammed@qu.edu.iq
Online published on 2 February, 2019. Abstract Quorum sensing indicates to the capability of a bacterium to sense information from other members in the population when they compass a critical concentration and connect with them. The mode used for this intercellular connection is depend on small, self-generated signal molecules called as autoinducers. Quorum sensing is refection to endure pathogenic bacteria mechanism to reduce host immune responses by retardant the forming of tissue-destroying virulence factors until adequate bacteria have accumulated and are destined to crush host defense mechanisms and set infection. Among these pathogenic bacteria, Gram negative bacteria such as Pseudomonas aeruginosa, Vibrio spp., and Escherichia coli as well as Gram positive bacteria; S. aureus and Clostridium perfringens are probably the best understood in terms of the virulence factors regulated by the Quorum sensing that plays a role in the pathogenicity. In conclusion bacteria do not live separated, but rather they communicate using varied chemical languages. Top Keywords Quorum sensing, Gram positive bacteria, Gram negative bacteria, Virulence factors. Top |