ArticleIranian journal of microbiology2015
Detection of lytA, pspC, and rrgA genes in Streptococcus pneumoniae isolated from healthy children.
Article in Iranian journal of microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
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- Epidemiology and serotype distribution ofFrontiers in public health · 2023Article
- Pilus ofFrontiers in cellular and infection microbiology · 2023Review
- Pneumococcal nasopharyngeal carriage in children under 5 years of age at an outpatient healthcare facility in Novi Sad, Serbia during the COVID-19 pandemic.IJID regions · 2022Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectivesMany surface proteins are implicated in nasopharyngeal colonization and pathogenesis of Streptococcus pneumoniae. Some of these factors are candidate antigens for protein based vaccines. New vaccine designs focus on the surface proteins (e. g., pspA and pspC) and also cytolysin, and pneumolysin. In this study, 3 key virulence genes, lytA, pspC, and rrgA, which encoded surface proteins, were detected among S. pneumoniae isolates. MATERIALS AND
methodsA total of 260 nasopharyngeal swabs were collected from healthy children under 6 years old attending day care centers in Mashhad, Iran. Isolates of S. pneumoniae were confirmed by optochin susceptibility and colony appearance and also by PCR for cpsA gene. The presence of lytA, pspC, and rrgA genes were also detected by PCR.
resultsA total of 59 isolates were confirmed as S. pneumoniae. Among these isolates, 50 (84.74%), 19 (32.20%), and 2 (3.38%) were positive for lytA, rrgA, and pspC genes respectively. The presence of these genes among S.pneumoniae isolates were as follows: 1) rrgA, lytA, pspC (1 isolate), 2) rrgA, lytA(17isolates), 3) pspC (2 isolate), 4) lytA (50 isolates).
conclusioncpsA gene was specific for detection of S. pneumoniae isolates which were colonized in nasopharynx. The lytA gene was the most frequent gene among the S. pneumoniae isolates, and combination of rrgA, lytA was the most observed pattern. Thus, it is important for future monitoring of vaccine formulation in our country.
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Identifiers
26668703PMC4676985W2237988543What OpenQuestion holds
Registered trials
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