Determination of Capsule Types, Antibiotic Resistance Profiles and Phylogenetic Relationships of Group B Streptococcus Isolates Isolated from Patients Followed in Various Clinics and Polyclinics Çeşitli Klinik ve Polikliniklerde Takip Edilen Hastalardan İzole Edilen Grup B Streptokok İzolatlarının Kapsül Tiplerinin Belirlenmesi, Antibiyotik Direnç Profilleri ve Filogenetik İlişkilerinin Araştırılması


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KIZILYILDIRIM S., Kandemir T., Sucu B., Köksal F.

Mikrobiyoloji bulteni, vol.58, no.1, pp.1-12, 2024 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 1
  • Publication Date: 2024
  • Doi Number: 10.5578/mb.20249901
  • Journal Name: Mikrobiyoloji bulteni
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.1-12
  • Çukurova University Affiliated: Yes

Abstract

Group B streptococci (GBS) are microorganisms that cause various systemic infections. In this study, it was aimed to investigate the capsule serotypes, antibiotic resistance and phylogenetic similarity relationship between GBS isolates. One hundred and ten GBS isolates isolated from female patients who admitted to Adana City Hospital with various complaints were included in the study. Kirby-Bauer disc diffusion method was used for the antibiotic resistance patterns and evaluated with CLSI criteria. The genes ermB, ermTR, mefA for erythromycin resistance and linB genes for clindamycin resistance were investigated by multiplex PCR method. Multiplex PCR method was used for GBS capsule serotyping. Similarity relationship between the isolates was analyzed by pulsed-field gel electrophoresis (PFGE) method. As a result of the study; all strains were found to be sensitive to penicillin and vancomycin. Erythromycin, clindamycin ofloxacin, and ceftriaxone resistance rates were observed as 60%, 11.8%, 6.4%, and 4.5%, respectively. The mefA gene was not found while 53% and 47% of the erythromycin-resistant isolates carried ermTR and ermB genes, respectively. The linB gene was not found in clindamycin-resistant GBS isolates. The capsule serotype distributions of GBSs were found as, Ib 42.7%, Ia 35.5%, III 10%, II 8.2%, and V 3.6%, respectively. In the analysis of the similarity relationships between GBS isolates with the PFGE method, no significant relationship was found. In conclusion, it was thought that more studies should be conducted to show the prevalence of GBS capsule serotypes and patterns of antibiotic resistance.