Development of accelerated genodiagnosis method of pertussis and pertussis-like diseases on the basis of mPCR-RT.
Klin Lab Diagn
; 65(9): 567-573, 2020 Sep 16.
Article
in En
| MEDLINE
| ID: mdl-33245643
ABSTRACT
The aim of the work was to develop an accelerated genodiagnosis method based on mPCR-RT for the detection DNA of B. pertussis, B. parapertussis, B. holmesii. MATERIALS AND METHODS:
The study used 104 strains of microorganisms, of which 50 strains of B. pertussis, 37 - B. parapertussis, 17 - heterologous species of microorganisms. Assessment of analytical specificity was carried out using DNA strains of various microorganisms with a concentration at least 109 GE / ml. To check the analytical sensitivity we studied a series of serial dilutions of bacterial cultures of the control strains B. pertussis â 143, B. parapertussis â 38b, B. holmesii DSM 13416 with a concentration of 5x109 - 5 µm/ml.RESULTS:
Insertion sequences were chosen as diagnostic targets for B. parapertussis - a specific fragment IS1001, for B. holmesii - a specific fragment hlIS1001, for B.pertussis - a fragment IS481. To develop a genodiagnosis method specific primers were designed and combined into a single multi-primer mixture, the composition of the reaction mixture and the amplification conditions were selected. The analytical sensitivity of the developed method for detecting pertussis and pertussis-like pathogens was 5×101 GE / ml. Verification of the developed methodology of gene diagnostics showed 100% analytical specificity.CONCLUSION:
An accelerated genodiagnosis method based on mPCR-RT has been developed, it allows you to identify DNA of B. pertussis, B. parapertussis, B. holmesii, which expands the possibilities of examining patients with suspected pertussis and pertussis-like diseases in order to increase laboratory confirmation of the diagnosis.Key words
Full text:
1
Database:
MEDLINE
Main subject:
Bordetella Infections
/
Whooping Cough
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Humans
Language:
En
Year:
2020
Type:
Article