Document Type : Research Paper

Authors

1 Collage of Sciences – Unersity Of Anbar

2 National Center of Hematology at Al -Mustansiryah University, Baghdad

Abstract

The present study included the collection of 120 samples from various clinical sources. The samples collected from some hospitals in Baghdad city which included burns ,wound , cystic fibrosis, ear infections and urinary tract infections ( 52 ,28, 4, 23 and 13). Samples respectively. Samples were identified based on the morphological and microscopical characteristics of the colonies when they were culturing in a number of culture media as well as biochemical tests. The molecular detection was used to confirm diagnostic test for the isolates based on the 16SrRNA gene, as a detection gene, which has specific sequences for DNA of P.aeruginosa bacteria.The results of molecular detection showed that 51 isolates belong to target bacteria were distributed as follow 21 of burns, 14 isolates of wounds, 7 isolates of ear infection, 4 isolates of cystic fibrosis, 5 isolates of urinary tract infection. The results of phenotypic detection of biofilm formation showed that 44/51 (86.2%) of isolates differences in their ability to biofilm formation. The results of screed QS genes by Polymerase chain reaction (PCR) amplify based on specific sequences for lasI gene showed that 48 (94.1%) of isolates have lasI gene.

Keywords

Main Subjects

  1. Kenneth Todar (2011). Pseudomonas, Todar’s online textbook of Bacteriology.
  2. Senturk , S.S.U and Gulgun, B.T. A. and Ulusoy ,S .(2012). Quorum sensing and virulence of Pseudomonas aeruginosa during urinary tract infections. J Infect Dev Ctries . 6(6):501
  3. Kayser, F.H.; Bienz, K.A.; Johannes, E. and Zinkernagel,  R.M. (2005). Kayser, Medical Microbiology, 10thEdition.
  4. Kumar,S. (2012) . vishwe ,M. Katoch. text book of microbiology. 1stED.gaypee brothers medical bublisher. Gellatly, S.L. and Hancock, R.E. (2013).  Pseudomonas aeruginosa: New insights into pathogenesis and host defenses.Pathog. Dis, 67(3):159-73.
  5. Gellatly, S.L. and Hancock, R.E. (2013).  Pseudomonas aeruginosa: New insights into pathogenesis and host defenses. Pathog. Dis, 67(3):159-73.
  6. Govan,J.R.(2007).Pseudomonas aeruginosa and non fermenters ,Medical Microbiology . 17thed . Churchill Livingtone Elsevier.
  7. Donlan, R.M . (2002). Biofilms: Microbial life on surfaces, Emerg Infect Dis.8:881-890.
  8. Trachoo, N.(2003) .Biofilm  and  food  industry. J.Technol.25:807-815
  9. Overman ,P.R.(2000). Biofilm:A new view of plaque, J. Cont. Dent Prac.1: 2-7.
  10. Costerton,W.; Veeh, R.; Shirtliff , M .; Pasmore ,M and Ehrlich, G. (2003) .The  application  of  biofilm science to the study and control of chronic bacterial  infections, J.Clin.Invest.112:1466-1477.
  11. Davey, M.E and'Toole , G.A.(2000). Microbial biofilms : from ecology to molecular genetics. Microbiol. Mol. Biol. Rev . 64: 847-867.
  12. Campbell, M .; Mahenthiralingam  ,E .;  and  Speert , D.P.(2000). Evaluation of random amplified polymorphic DNA typing of Pseudomonas aeruginosa. J. Clin. Microbiol .38:4614-5.
  13. Wolfgang, M.C.; Kulasekara, B.R .; Liang , X.;Boyd, D.; Wu, K and Yang Q,et al.(2003).Conservation of genome content and virulence determinants among clinical and environmental isolates of Pseudomonas aeruginosa. Proc. Nat. Acad .Sci. USA.100:8484.
  14. Yang,L.(2009).Pseudomonas aeruginosa quarm sensing .A factor in biofilm development and an antipathogenic drug target. PH.D thesis Department of system Biology .technical university of Denmark.
  15. Nealson, K. H., T. Platt & C. Hastings, (1970). Cellular control of the synthesis and activity of the bacterial luminescent system. J. Bacteriol. 104: 313-322.
  16. Yin, W.F.; Purmal,K.; Chin, S.;Chan,X.Y.; Koh, C.L.; Sam, C.K and Chan,  K.G. (2012).N-acyhomoserine lactone production by Klebsiella  pneumonia isolated from human tongue  surface. Polish. J .Vet  .12:3472-3483. 
  17. Taga,M.E and Bassler,B.L.(2003).Chemical communication among bacteria. Proc. Natl. Acad. Sci. USA.100:14549-14554.
  18. Wanger, V.E.; Li, L.L.; Isabella,V.M and  Iglewski,  B.H.(2007).Analysis  of the hierarchy of quorum-sensing regulation in Pseudomonas aeruginosa. Anal. Bioanal.Chem .387:469-479.
  19. Kumar,S.vishwe ,M. Katoch.(2012). Text book of microbiology. 1stED.gaypee brothers medical bublisher.
  20. Kiratisin, P., K. D. Tucker & L. Passador, (2002). LasR, a transcriptional activator of Pseudomonas aeruginosa  virulence genes, functions as a multimer. J. Bacteriol. 184: 4912-4919.
  21. Schaber,J.A.;Triffo, W.J.;Suh,S.J.;Oliver, M.;  Hastert,  M.C.; Griswold, J.A.;Auer, M.; Hamood, A.N and Rumbaugh, K.P.(2007). Pseudomonas aeruginosa forms biofilms in acute infection independent   of   cell-to-cell signalling.J .Infect. Immun. 75(8),3715-3721.
  22. Sifri,C.D.(2008). Quorum sensing : bacteria talk sense.CID  .47:1070-1076.
  23. Karatuna,O and Yagci ,A .(2010). Analysis of quorum sensing dependent  virulence  factor  production and  its relationship  with  antimicrobia susceptibility in Pseudomonas  aeruginosa respiratory  isolates.J. Clin. Microb. Infect .16(2):1770-1775.
  24. Davies, D. G., M. R. Parsek, J. P. Pearson, B. H. Iglewski, J. W. Costerton & E. P. Greenberg, (1998). The involvement of cell-to-cell signals in the development of a bacterial biofilm. Science 280: 295-298.
  25. Davey, M. E., N. C. Caiazza & G. A. O'Toole, (2003).Rhamnolipid surfactant production affects biofilm architecture in Pseudomonas aeruginosa PAO1. J. Bacteriol. 185: 1027-1036.
  26. Sakuragi, Y. & R. Kolter, (2007). Quorum-sensing regulation of the biofilm matrix genes (pel) of Pseudomonas aeruginosa. J. Bacteriol. 189: 5383-5386.
  27. Allesen, Holm, M., K. B. Barken, L. Yang, M. Klausen, J. S. Webb, S. Kjelleberg, S. Molin, M. Givskov & T. Tolker-Nielsen, (2006).A characterization of DNA release in Pseudomonas aeruginosa cultures and biofilms. Mol. Microbiol.59: 1114-1128.
  28. Gilbert, K. B., T. H. Kim, R. Gupta, E. P. Greenberg & M. Schuster,(2009).Global position analysis of the  Pseudomonas aeruginosa  quorum-sensing transcription factor LasR. Mol. Microbiol. 73: 1072-1085.
  29. Holt,J.G.; Kreieg ,N.R.; Sneath, P.H .; Staley, J.T. and Williams , S.T.(1994). Bergey`s Manual of Determinative Bcteriology. 9th ed. Wikins. pp: 1063.
  30. Bose, S. ;Khodke, M. ; Basak, S. ; Mallick, S.K.(2009).Detection of biofilm producing Staphylococci : need of the hour. J. Clin. Diag. Res., 3:1915-1920.
  31. Brooks, G.F. ; Carroll, K.C. ; Butel, J.S. ; Morse, S.A. and Mietzner, T.A. (2010) . Medical Microbiology . 25th ed. Mcgraw-HILL companies . New York .
  32. Shaikh, I. and Musaddiq, M. (2010). Detection and analysis of Biofilm production and extracellular polymeric substance in Pseudomonas aeruginosaisolated from clinical specimens. Biosci. Biotech. Res. Comm. 3(1):74-78.
  33. Heydari,  S. and  Eftekhar, F.  (2014). Biofilm Formation and β-Lactamase  Production  in  Burn  Isolates  of  Pseudomonas aeruginosa .Jundishapur J Microbiol . 8(3): e15514.
  34. Davey, M. E., N. C. Caiazza & G. A. O'Toole, (2003).Rhamnolipid surfactant production affects biofilm architecture in Pseudomonas aeruginosa PAO1. J. Bacteriol. 185: 1027-1036.