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Literature DB >> 1452660

Characterization and comparison of Australian human spotted fever group rickettsiae.

R W Baird¹, M Lloyd, J Stenos, B C Ross, R S Stewart, B Dwyer.

Abstract

The microbiological and molecular characteristics of the rickettsiae isolated from humans with Queensland tick typhus (QTT) caused by Rickettsia australis and the recently described Flinders Island spotted fever (FISF) were compared. Clinically and serologically, the diseases are similar. Cell culture reveals differences in the plaque-forming abilities of the isolates. Characterization of the gene encoding the genus-specific 17-kDa antigen of R. australis revealed a unique nucleotide sequence unlike those of the FISF isolate and Rickettsia rickettsii. Southern blot analysis of rickettsial DNA from the isolates with a 17-kDa-antigen gene probe revealed the presence of this gene in all isolates but no difference in banding patterns. When a probe for the rRNA genes was used, clear differences in banding patterns of isolates from patients with QTT and FISF were revealed. Thus, the rickettsiae isolated from patients with FISF differ from those from patients with QTT and may represent a new rickettsial species.

Entities: Disease Species

Mesh：

Substances：

Year: 1992 PMID： 1452660 PMCID： PMC270549 DOI： 10.1128/jcm.30.11.2896-2902.1992

Source DB: PubMed Journal: J Clin Microbiol ISSN： 0095-1137 Impact factor: 5.948

15 in total

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13 in total

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Journal: Postgrad Med J Date: 2000-05 Impact factor: 2.401

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Authors: Adam Stewart; Mark Armstrong; Stephen Graves; Krispin Hajkowicz
Journal: Am J Trop Med Hyg Date: 2017-07 Impact factor: 2.345

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Journal: J Clin Microbiol Date: 1996-09 Impact factor: 5.948

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Authors: Leonard Izzard; Matthew Chung; Julie Dunning Hotopp; Gemma Vincent; Daniel Paris; Stephen Graves; John Stenos
Journal: Ticks Tick Borne Dis Date: 2018-07-11 Impact factor: 3.744

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Authors: W Xu; D Raoult
Journal: J Clin Microbiol Date: 1997-07 Impact factor: 5.948

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Authors: W Xu; D Raoult
Journal: Clin Diagn Lab Immunol Date: 1997-11