| Autor: |
Kartashov, Mikhail Yu., Glushkova, Ludmila I., Mikryukova, Tamara P., Korabelnikov, Igor V., Egorova, Yulia I., Tupota, Natalia L., Protopopova, Elena V., Konovalova, Svetlana N., Ternovoi, Vladimir A., Loktev, Valery B. |
| Zdroj: |
Ticks and Tick-borne Diseases; June 2017, Vol. 8 Issue: 4 p588-592, 5p |
| Abstrakt: |
The number of tick-borne infections in the northern European regions of Russia has increased considerably in the last years. In the present study, 676 unfed adult Ixodes persulcatusticks were collected in the Komi Republic from 2011 to 2013 to study tick-borne rickettsioses. Rickettsiaspp. DNA was detected by PCR in 51 (7.6%) ticks. The nucleotide sequence analysis of gltAfragments (765bp) from 51 ticks indicated that 60.8% and 39.2% of the ticks were infected with Rickettsia helveticaand CandidatusR. tarasevichiae, respectively. The gltAfragments showed 100% identity with those of CandidatusR. tarasevichiae previously discovered in Siberia and China, whereas R. helveticashowed 99.9% sequence identity with European isolates. The ompBhad 8 nucleotide substitutions, 6 of which resulted in amino acid substitutions. In the sca9gene, 3 nucleotide substitutions were detected, and only one resulted in amino acid substitution. The smpA, ompW, and β-lactamasegenes of R. helveticaalso showed a high level of sequence identity. |
| Databáze: |
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