Detection of leptospiral DNA by nucleic acid hybridisation with 32P- and biotin-labelled probes.

@article{Terpstra1986DetectionOL,
  title={Detection of leptospiral DNA by nucleic acid hybridisation with 32P- and biotin-labelled probes.},
  author={Wiepko J. Terpstra and Gerard J. Schoone and Jan ter Schegget},
  journal={Journal of medical microbiology},
  year={1986},
  volume={22 1},
  pages={
          23-8
        }
}
Dot hybridisation with 32P- and biotin-labelled probes prepared from leptospiral DNA was performed to develop a sensitive and specific diagnostic method for early infection with leptospires. The smallest amounts of leptospiral DNA that could be detected with 32P- and biotin-labelled probes was 1.5 pg and 5 pg, respectively, corresponding to about 750 and 2500 leptospires. Dot hybridisation with a 32P-labelled probe detected leptospiral DNA in sera from all of 14 experimentally infected golden… 
Detection of Leptospira interrogans in clinical specimens by in situ hybridization using biotin-labelled DNA probes.
TLDR
This study shows that hybridization in situ can be simple to perform and may contribute to a rapid diagnosis.
Detection of leptospiral DNA by PCR
TLDR
An EcoRI fragment which is highly conserved among Leptospira interrogans isolated in Korea was cloned into pBluescript vector from L. interrogans serovar lai WH20 and provided valuable tools for the early diagnosis of leptospirosis.
Biotinylated probes to detect Leptospira interrogans on dot blot hybridization or by in situ hybridization
TLDR
Total genomic biotinylated probes which can identify leptospires by hybridization on filters or by in situ hybridization are described and cross‐hybridization results show that it is possible, by means of such probes, specifically to recognize pathogenic strains.
Detection of Leptospiraceae by amplification of 16S ribosomal DNA.
  • J. Hookey
  • Medicine, Biology
    FEMS microbiology letters
  • 1992
TLDR
Isolates of leptospires from clinical sources gave a positive PCR band, but those from surface waters did not, and there was no PCR product from 23 phylogenetically unrelated species of bacteria.
Development of a duplex-polymerase chain reaction for rapid detection of pathogenic Leptospira.
TLDR
For DNA extraction from bacterial cultures, the silica-based spin column method was found to be more suitable and was selected for the extraction of DNAs from all 92 bacterial strains including 56 strains of pathogenic Leptospira, 15 strains of non-pathogenic Leptonospira and 21 other strains of bacteria.
Detection ofLeishmania parasites by DNA in situ hybridization with non-radioactive probes
TLDR
Biotin-labelled total promastigote DNA was hybridized to cultured Leishmania parasites and to blood and impression smears of infected mice and staining of host cell nuclei in the smears did not interfere with the detectability of the parasites.
Detection of leptospires in urine by polymerase chain reaction
TLDR
This comparative study suggests that amplification by PCR may be a valuable method for the detection of leptospires in cattle urine.
DNA hybridization with hardjobovis-specific recombinant probes as a method for type discrimination of Leptospira interrogans serovar hardjo.
TLDR
The results indicate that specific recombinant DNA probes might provide tools for routine diagnosis and classification in cases of hardjo infections and show a high sensitivity of the assays but also considerable cross-hybridization.
The chemiluminescent detection of leptospiral antigen.
  • M. Palmer, J. Hookey
  • Medicine, Biology
    Zentralblatt fur Bakteriologie : international journal of medical microbiology
  • 1992
Detection of seven species of pathogenic leptospires by PCR using two sets of primers.
Two sets of primers derived from genomic DNA libraries of Leptospira serovars icterohaemorrhagiae (strain RGA) and bim (strain 1051) enabled the amplification by PCR of target DNA fragments from
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 10 REFERENCES
Rapid and sensitive colorimetric method for visualizing biotin-labeled DNA probes hybridized to DNA or RNA immobilized on nitrocellulose: Bio-blots.
  • J. Leary, D. Brigati, D. Ward
  • Biology, Chemistry
    Proceedings of the National Academy of Sciences of the United States of America
  • 1983
TLDR
At high probe concentrations (250--7560 ng/ml), biotin-labeled DNA exhibits lower nonspecific binding to nitrocellulose than does radiolabeled DNA, so hybridization times required for the analysis of unique mammalian gene sequences can be decreased to 1--2 hr.
Enzymatic synthesis of biotin-labeled polynucleotides: novel nucleic acid affinity probes.
TLDR
Biotin-labeled polynucleotides, both single and double-stranded, are selectively and quantitatively retained on avidin-Sepharose, even after extensive washing with 8 M urea, 6 M guanidine hydrochloride, or 99% formamide.
Deoxyribonucleic Acid Base Composition and Homology Studies of Leptospira
TLDR
There was little or no genetic relatedness between strains of the four groups of leptospiras and the thermal elution midpoint of heterologous DNA duplexes was always lower than the homologous reaction.
Identification of Leptospira serovars by restriction-endonuclease analysis.
TLDR
Strains of Leptospira interrogans were examined by restriction-endonuclease analysis and gave patterns that differed from each other, and from other members of the Hebdomadis serogroup and members of other serogroups.
Differentiation of Pathogenic and Saprophytic Leptospires I. Growth at Low Temperatures
TLDR
The saprophytic leptospires tested grew in the 10% rabbit serum medium at 13 C, whereas none of the 20 pathogens grew during the 30-day incubation period, providing a simple method of discrimination.
Free viral DNA in BK virus-induced hamster tumor cells
TLDR
The biological properties of nine clonal lines of BK virus-induced hamster tumor cells were studied, and the great majority of the viral DNA molecules appeared to be present as free (nonintegrated) molecules.
Acceleration of DNA renaturation rates
TLDR
The logarithm of the DNA renaturation rate constant is shown to be proportional to the concentration of dextran polymer and to be proportionate to the intrinsic viscosity of a series ofdextran polymers of identical chemical composition.
Expression of Pseudomonas jluorescens D - galactose dehydrogenase in Escherichia coli
  • Gene
  • 1981