Results 151 to 160 of about 3,523 (182)

Evidence of Rickettsia Prowazekii Infections in the United States

The American Journal of Tropical Medicine and Hygiene, 1980
From January 1976 through January 1979 serum specimens from 1,575 individuals were received at the Center for Disease Control and tested for antibodies to rickettsiae. Of these, sera from eight persons gave serological results indicative of recent infections with epidemic typhus rickettsiae (Rickettsia prowazekii). Five of the persons were from Georgia,
J E, McDade, C C, Shepard, M A, Redus, V F, Newhouse, J D, Smith   +4 more
openaire   +2 more sources

Genomic rearrangements during evolution of the obligate intracellular parasite Rickettsia prowazekii as inferred from an analysis of 52015 bp nucleotide sequence

Microbiology (United Kingdom), 1997
In this study a description is given of the sequence and analysis of 52 kb from the 1.1 Mb genome of Rickettsia prowazekii, a member of the alpha-Proteobacteria.
Jan O Andersson
exaly   +1 more source

Rickettsia prowazekii, ribosomes and slow growth

Trends in Microbiology, 1995
Some bacteria, such as Rickettsia prowazekii, grow slowly, not with anticipation of a future feast, but because it is evolutionarily advantageous to do so. This creates apparent paradoxes for understanding their physiology and biochemistry. These rickettsiae have a ribosome concentration higher than expected if these ribosomes support translation at ...
openaire   +2 more sources

Evaluation of the pathogenic potential of Rickettsia canada and Rickettsia prowazekii organisms in dogs

Journal of the American Veterinary Medical Association, 1995
Summary An unusual pattern of seroreactivity to antigens of rickettsial organisms (Rickettsia rickettsii, R rhipicephali, R montana, and R bellii), particularly to R bellii antigen, was detected in 3 dogs during a 2-month period. Thus, studies were initiated to clarify the pathogenic potential of the more distantly related rickettsial organisms (R ...
E B, Breitschwerdt, B C, Hegarty, M G, Davidson, N S, Szabados   +3 more
openaire   +2 more sources

[The library of Rickettsia prowazekii genes].

Molekuliarnaia genetika, mikrobiologiia i virusologiia, 1987
The DNA of Rickettsia provazekii strain E was cleaved by PstI restriction endonuclease under the conditions of partial restriction. The fragments were inserted into the PstI site of pBR325 and cloned in this plasmid. E. coli strain HB101 was used as a recipient for cloning.
M I, Artem'ev, E B, Rydkina, N M, Balaeva   +2 more
openaire   +1 more source

Epizootiology of Epidemic Typhus (Rickettsia Prowazekii) in Flying Squirrels

The American Journal of Tropical Medicine and Hygiene, 1978
Vector transmission of Rickettsia prowazekii among wild flying squirrels, Glaucomys volans, was suggested by the occurrence of natural infection of squirrel lice and fleas. Lice, mostly Neohaematopinus sciuropteri Osburn, were found infected in the fall in each of 2 consecutive years; 4 of the 8 pools of this insect tested were infected.
D E, Sonenshine, F M, Bozeman, M S, Williams, S A, Masiello, D P, Chadwick, N I, Stocks, D M, Lauer, B L, Elisberg   +7 more
openaire   +2 more sources

[Action of tetracycline and rifampicin on Rickettsia prowazekii and Rickettsia sibirica].

Antibiotiki, 1983
The effect of tetracycline and rifampicin on R. prowazekii, strain Breinl and R. sibirica, strain X1 was studied in the experiments with chick embryos exposed to the antibiotic mixture with the infection material. It was shown that tetracycline in doses of 0.1 and 1 mg/embryo had the rickettsiostatic and rickettsiocidic effects respectively on R ...
T K, Kashliaev, N G, Kekcheeva
openaire   +1 more source

Development of Rickettsia prowazekii DNA Vaccine

Annals of the New York Academy of Sciences, 2003
Abstract: Rickettsia prowazekii, the etiologic agent of louse‐borne typhus, is listed as a category B agent under the select agent list of the United States Centers for Disease Control and Prevention. R. prowazekii was placed on the select agent list due to its potential to cause epidemic, high mortality in untreated and/or misdiagnosed cases, and ...
Christopher, Coker, Mahreen, Majid, Suzana, Radulovic   +2 more
openaire   +2 more sources

The concentrations of stable RNA and ribosomes in Rickettsia prowazekii

Molecular Microbiology, 1994
SummaryThe obligate Intracellular parasite, Rickettsia prowazekii, is a slow‐growing bacterium with a doubling time of about 10h. In the present study, DNA and RNA were obtained from the rickettsiae by two independent methods, i.e. simultaneous isolation of DNA and RNA from the same sample by phenol:chloroform extraction and CsCI gradient ...
H, Pang, H H, Winkler
openaire   +2 more sources

[Probable nature of Rickettsia prowazekii virulence].

Molekuliarnaia genetika, mikrobiologiia i virusologiia, 1996
A 29.5 kda outer membrane protein (OmpB) of R. prowazekii virulent Breinl strain is known to differ from its counterpart in attenuated Madrid E strain, while OmpB of this latter one and of its virulent variant EVir coincide in mobility. The infectivity of these strains for macrophages was previously shown to be different as well, and to correlate with ...
V V, Emel'ianov, N G, Dem'ianova, B B, Kalmyrzaev, M A, Krasnova   +3 more
openaire   +1 more source