Antibiotic Susceptibility and Prevalence of Adhesion Genes in Streptococcus pneumoniae Isolates Detected in Carrier Children in Tehran

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ABDOLLAHI SARA; SIADAT SEYED DAVAR; SHAPOURI REZA; MIRZAEI BAHMAN; MOUSAVI SEYED FAZLOLLAH; NIKBIN VAJIHE SADAT; Moosavi Seyed Hamid

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Journal: Jundishapur Journal of Microbiology Year:2018 | Volume:11 | Issue:6 Page(s): 0-0

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Title

Antibiotic Susceptibility and Prevalence of Adhesion Genes in Streptococcus pneumoniae Isolates Detected in Carrier Children in Tehran

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Keywords

Nasopharynx

PCR

Streptococcus pneumonia

Adhesion Genes

Abstract

Background: Pharyngeal carriers are the source and transitional vectors of invasive diseases. Attachment is the first step in pathogenicity. Strains of Streptococcus as normal flora can cause diseases in certain circumstances. Adhesion proteins of these bacteria play a fundamental role in the attachment and colonization. Objectives: In the present study, 5 genes encoding surface proteins namely phtD, pspC, phtE, lytA, and rrgA were evaluated in Streptococcus pneumoniae isolates collected from 4 main care centers and the children’ s Medical center in Tehran. Methods: Three hundred and eight nasopharyngeal swab specimens were collected from children under 6 years. The identification of S. pneumoniae isolates was performed using biochemical tests confirmed by PCR for the presence of cpsA gene. The existence of phtD, phtE, pspC, lytA, and rrgA genes was studied by PCR amplification assays. Results: From308 nasopharyngeal swabs, 102 isolates of S. pneumoniae wereconfirmedby identification tests. Amongthese isolates, 87 (85. 2%), 54 (52. 9%), 51 (50%), 43 (42. 1%), and 31 (30. 3%) were positive for lytA, rrgA, phtE, pspC, and phtD genes, respectively. Conclusions: Our study showed that cpsA of S. pneumoniae is one of the major characteristic genetic markers for diagnostic purposes. Among five Adhesion Genes, lytA was the most frequent one and the strains with a combination of rrgA and lytA genes were predominant. These findings could be very useful in designing further studies on vaccines against S. pneumoniae in our country.

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APA: Copy

ABDOLLAHI, SARA, SIADAT, SEYED DAVAR, SHAPOURI, REZA, MIRZAEI, BAHMAN, MOUSAVI, SEYED FAZLOLLAH, NIKBIN, VAJIHE SADAT, & Moosavi, Seyed Hamid. (2018). Antibiotic Susceptibility and Prevalence of Adhesion Genes in Streptococcus pneumoniae Isolates Detected in Carrier Children in Tehran. JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM), 11(6), 0-0. SID. https://sid.ir/paper/317744/en

Vancouver: Copy

ABDOLLAHI SARA, SIADAT SEYED DAVAR, SHAPOURI REZA, MIRZAEI BAHMAN, MOUSAVI SEYED FAZLOLLAH, NIKBIN VAJIHE SADAT, Moosavi Seyed Hamid. Antibiotic Susceptibility and Prevalence of Adhesion Genes in Streptococcus pneumoniae Isolates Detected in Carrier Children in Tehran. JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM)[Internet]. 2018;11(6):0-0. Available from: https://sid.ir/paper/317744/en

IEEE: Copy

SARA ABDOLLAHI, SEYED DAVAR SIADAT, REZA SHAPOURI, BAHMAN MIRZAEI, SEYED FAZLOLLAH MOUSAVI, VAJIHE SADAT NIKBIN, and Seyed Hamid Moosavi, “Antibiotic Susceptibility and Prevalence of Adhesion Genes in Streptococcus pneumoniae Isolates Detected in Carrier Children in Tehran,” JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM), vol. 11, no. 6, pp. 0–0, 2018, [Online]. Available: https://sid.ir/paper/317744/en

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