Difference between revisions of "PMID:4171295"

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'''Pickens, EG , Gerloff, RK  and Burgdorfer, W '''  (1968) Spirochete from the rabbit tick, Haemaphysalis leporispalustris (Packard). I. Isolation and preliminary characterization. ''J. Bacteriol.'' '''95''':291-9
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An unidentified spirochete, referred to as the 277F agent, was isolated from Haemaphysalis leporispalustris ticks from two cottontail rabbits by inoculation of the tick suspension into embryonated chicken eggs. Because of its minute width (0.1 mu), the organism was difficult to see when stained by the Giemsa method, but was readily demonstrated by silver impregnation or fluorescent-antibody procedures. In dark-field microscopy, the spirochetes appeared uniformly and rather tightly coiled, and exhibited typical corkscrewlike motility. After yolk-sac inoculation, the agent was highly lethal for chick embryos and was recovered in large quantity from several embryonic tissues and fluids. It could also be maintained in nonfertile eggs and in an enriched liquid medium. This previously undescribed spirochete could pass through Berkefeld N but not Seitz EK filters. It was relatively resistant to heat and to penicillin or sulfadiazine, but was markedly inhibited by streptomycin, broad-spectrum antibiotics, and homologous neutralizing antiserum. Of several species of animals tested for susceptibility to this spirochete, only the snowshoe hare gave evidence of infection.
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[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=4171295 PubMed] [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC252016 PMC252016]
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Animals; Birds; Chick Embryo; Complement Fixation Tests; Cricetinae; Filtration; Fluorescent Antibody Technique; Mice; Microscopy, Electron; Neutralization Tests; Penicillins/pharmacology; Rabbits; Spirochaeta/drug effects; Spirochaeta/isolation & purification; Spirochaeta/pathogenicity; Staining and Labeling; Streptomycin/pharmacology; Sulfadiazine/pharmacology; Ticks
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==Main Points of the Paper ==
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== Materials and Methods Used ==
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==Phenotype Annotations==
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==Notes==
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==References==
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[[Category:Publication]]

Latest revision as of 18:08, 16 September 2012

Citation

Pickens, EG , Gerloff, RK and Burgdorfer, W (1968) Spirochete from the rabbit tick, Haemaphysalis leporispalustris (Packard). I. Isolation and preliminary characterization. J. Bacteriol. 95:291-9

Abstract

An unidentified spirochete, referred to as the 277F agent, was isolated from Haemaphysalis leporispalustris ticks from two cottontail rabbits by inoculation of the tick suspension into embryonated chicken eggs. Because of its minute width (0.1 mu), the organism was difficult to see when stained by the Giemsa method, but was readily demonstrated by silver impregnation or fluorescent-antibody procedures. In dark-field microscopy, the spirochetes appeared uniformly and rather tightly coiled, and exhibited typical corkscrewlike motility. After yolk-sac inoculation, the agent was highly lethal for chick embryos and was recovered in large quantity from several embryonic tissues and fluids. It could also be maintained in nonfertile eggs and in an enriched liquid medium. This previously undescribed spirochete could pass through Berkefeld N but not Seitz EK filters. It was relatively resistant to heat and to penicillin or sulfadiazine, but was markedly inhibited by streptomycin, broad-spectrum antibiotics, and homologous neutralizing antiserum. Of several species of animals tested for susceptibility to this spirochete, only the snowshoe hare gave evidence of infection.

Links

PubMed PMC252016

Keywords

Animals; Birds; Chick Embryo; Complement Fixation Tests; Cricetinae; Filtration; Fluorescent Antibody Technique; Mice; Microscopy, Electron; Neutralization Tests; Penicillins/pharmacology; Rabbits; Spirochaeta/drug effects; Spirochaeta/isolation & purification; Spirochaeta/pathogenicity; Staining and Labeling; Streptomycin/pharmacology; Sulfadiazine/pharmacology; Ticks

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Main Points of the Paper

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Materials and Methods Used

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Phenotype Annotations

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Phenotype of Taxon Information Genotype Information (if known) Condition Information OMP ID OMP Term Name ECO ID ECO Term Name Notes Status
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Notes

References

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