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- Title
On Burkholderiales order microorganisms and cystic fibrosis in Russia.
- Authors
Voronina, Olga L.; Kunda, Marina S.; Ryzhova, Natalia N.; Aksenova, Ekaterina I.; Sharapova, Natalia E.; Semenov, Andrey N.; Amelina, Elena L.; Chuchalin, Alexandr G.; Gintsburg, Alexandr L.
- Abstract
Background: Microbes infecting cystic fibrosis patients’ respiratory tract are important in determining patients’ functional status. Representatives of Burkholderiales order are the most dangerous. The goal of our investigation was to reveal the diversity of Burkholderiales, define of their proportion in the microbiome of various parts of respiratory tract and determine the pathogenicity of the main representatives. Results: In more than 500 cystic fibrosis patients, representing all Federal Regions of Russia, 34.0% were infected by <italic>Burkholderia cepacia</italic> complex <italic>(Bcc)</italic>, 21.0% by <italic>Achromobacter spp</italic>. and 12.0% by <italic>Lautropia mirabilis</italic>. <italic>B. cenocepacia</italic> was the most numerous species among the <italic>Bcc</italic> (93.0%), and <italic>A. ruhlandii</italic> was the most numerous among <italic>Achromobacter spp.</italic> (58.0%). The most abundant genotype in <italic>Bcc</italic> was sequence type (ST) 709, and in <italic>Achromobacter spp.</italic> it was ST36. These STs constitute Russian epidemic strains. Whole genome sequencing of strains <italic>A. ruhlandii</italic> SCCH3:Ach33–1365 ST36 and <italic>B. cenocepacia</italic> GIMC4560:Bcn122 ST709 revealed huge resistomes and many virulence factors, which may explain the difficulties in eradicating these strains. An experience of less dangerous <italic>B. cenocepcia</italic> ST710 elimination was described. Massively parallel sequencing of <italic>16S rDNA</italic> amplicons, including V1-V4 hypervariable regions, was used to definite “healthy” microbiome characteristics. Analysis of maxillary sinus lavage of 7 patients revealed infection with Proteobacteria of the same ST as pathogens from sputum, suggesting that the maxillary sinus is a source of infection in cystic fibrosis patients. Conclusions: Characterization of the Russian epidemic bacterial strains in the sputum and sinuses of cystic fibrosis patients have better defined the importance of Burkholderiales bacteria. This information may aid in the development of effective approaches for treatment of this disease.
- Subjects
RUSSIA; CYSTIC fibrosis; BURKHOLDERIA infections; BURKHOLDERIA; RESPIRATORY infections; PUBLIC health; PATIENTS
- Publication
BMC Genomics, 2018, Vol 19, p1
- ISSN
1471-2164
- Publication type
Article
- DOI
10.1186/s12864-018-4472-9