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Genetically Diversity of Pseudomonas aeruginosa Isolated from Chronic Suppurative Otitis Media with Respect to Their Antibiotic Sensitivity Pattern

  • Mahesh Chandra Sahu
  • Santosh Kumar Swain
  • Subrat Kumar Kar
Original Article
  • 14 Downloads

Abstract

Pseudomonas aeruginosa is an important chronic suppurative otitis media (CSOM) pathogen that exhibits multiple resistances to antibiotics with increasing frequency, making patient treatment more difficult. The aim of the study is to ascertain the genetically diversity of this clinically isolated P. aeruginosa with inter simple sequence repeat (ISSR) markers. All 25 P. aeruginosa were isolated from CSOM patients by taking their ear swabs and culturing on blood agar and MacConkey agar. All strains were identified with morphological characters and biochemical testing. The antimicrobial susceptibility testing was carried out according to National Committee for Clinical Laboratory Standards. ISSR was used to study the genetic diversity of P. aeruginosa. Clinically CSOM isolated 25 P. aeruginosa were 88% Ciprofloxacin resistant and similarly resistant to other antibiotics were documented. The study has been made using ISSR marker to find out the genomic relation among the strains/populations of P. aeruginosa. The result was shown that maximum similarity (80%) was between S-11 and S-13 and minimum (28.2%) was between S-4 and S-16 with an average similarity of 53.2%. The dendogram showed a distinct separation in between all the strains/populations of P. aeruginosa. The strains/populations were broken up into two main clusters in which small one bear two strains/populations (S-4 and S-9) and another cluster have another 23 strains/populations. These 23 strains were also separated to form subcluster by having different range of small clades. The genetically diversity of pathogenic P. aeruginosa present in CSOM at our hospital indicates the coexistence different strains due to different antibiotic sensitivity patterns. The conventional culture and sensitivity methods are time consuming whereas in PCR, it will detect within 4–6 h for effective antibiotic. Basing upon the banding pattern with ISSR primers, clinicians can prescribe the effective antibiotics accordingly for CSOM patients in the same day.

Keywords

Pseudomonas aeruginosa CSOM Multi-resistant ISSR Genetical diversity 

Notes

Acknowledgement

This work was supported by the NPDF research project file no PDF/2016/000772 on CSOM, from SERB, DST, Govt. of India, New Delhi.

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Copyright information

© Association of Otolaryngologists of India 2018

Authors and Affiliations

  • Mahesh Chandra Sahu
    • 1
  • Santosh Kumar Swain
    • 2
  • Subrat Kumar Kar
    • 3
  1. 1.Directorate of Medical Research, IMS and SUM HospitalSiksha ‘O’ Anusandhan (Deemed to be University)BhubaneswarIndia
  2. 2.Department of Otorhinolaryngology, IMS and SUM HospitalSiksha ‘O’ Anusandhan (Deemed to be University)BhubaneswarIndia
  3. 3.Department of Microbiology, IMS and SUM HospitalSiksha ‘O’ Anusandhan (Deemed to be University)BhubaneswarIndia

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