After washing, FITC-labeled goat anti-mouse IgG was added at a di

After washing, FITC-labeled goat anti-mouse IgG was added at a dilution

of 1:20 amd incubated at 37°C for 40 min. After washing, the sildes were examinated by fluorescence microscopy. PCR A nested PCR was performed with primers designed to amplify the variable spacer between two conserved structures, the 3′ end of the 5S rRNA and the 5′ end of the 23S rRNA as described [14, 15]. To minimize contamination, DNA extraction, the reagent setup, amplification and agarose gel electrophoresis were performed in separate rooms. RFLP analysis The culture isolates were further analysed by RFLP to identify their genotypes as described [15, 16]. For each one, 13 μl. amplified DNA TH-302 price was digested at 37°C overnight with endonuclease MseI (New England Biolabs)

according to the manufacturer’s recommendations. Electrophoresis was conducted in 16% polyacrylamide gel at 100 V for 3 h. The gels were silver stained, and bands were subsequently visualized under white light. A 50 bp DNA Ladder Marker (TaKaRa, Shuzo) was used as a molecular mass marker. Positive controls of B. garinii, B. afzelii and B. burgdorferi s.s. were prepared in the same way. Genospecies of culture isolates were identified according to RFLP profiles of each sample. RFLP profiles that differed from the known profiles of positive controls were further analysed by sequence analysis. DNA sequencing of PCR products PCR products were purified by using the Qiaquick Gel Extraction kit (Qiagen). Proteases inhibitor The nucleotide sequences were determined by a dideoxynucleotide cycle sequencing method with an automated DNA sequencer (ABI Prism 377, Perkin-Elmer). The sequences obtained in the present study were deposited in GenBank. MseI RFLP analysis of the 5S-23S rRNA intergenic spacer was performed on the basis of the DNA sequences obtained using software Vector NTI 9.0 (Lu

& Moriyama, 2004). Nucleotide sequence accession numbers The accession numbers of the 17-DMAG (Alvespimycin) HCl 5S-23S rRNA intergenic spacer sequences of culture isolates in this study are GQ369934–37. Acknowledgements We thank Dr. Bin Kang and Dr. Jing He for reviewing the manuscript. This work supported by the Special Project of the “”Eleventh Five-Year Plan”"for Medical Science Development of PLA (08Z003) References 1. Steere AC, Grodzicki RL, Kornblatt AN, Craft JE, Barbour AG, Burgdorfer W, Schmid GP, Johnson E, Malawista SE: The spirochetal etiology of Lyme disease. N Engl J Med 1983, 308:733–740.PubMedCrossRef 2. Magnarelli L, Anderson JF: Ticks and biting insects infected with the etiologic agent of Lyme disease, Borrelia burgdorferi . J Clin Microbiol 1998, 26:1482–6. 3. Anderson JF, Johnson RL, Magnarelli AC: Seasonal prevalence of Borrelia burgdorferi in check details natural population of white-footed mice, Peromyscus leucopus . J Clin Microbiol 1987, 25:1564–6.PubMed 4. Donahue JG, Piesman AJ: Reservoir competence of white-footed mice for Lyme disease spirochetes. Am J Trop Hyg Med 1987, 36:92–6. 5.

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