Results 11 to 20 of about 3,218 (166)
Identification and Characterization of Novel Small RNAs in Rickettsia prowazekii [PDF]
Frontiers in Microbiology, 2016 Emerging evidence implicates a critically important role for bacterial small RNAs (sRNAs) as post-transcriptional regulators of physiology, metabolism, stress/adaptive responses, and virulence, but the roles of sRNAs in pathogenic Rickettsia species remain poorly understood.
Sanjeev Sahni +2 more
exaly +5 more sources
Rickettsia prowazekii and Real-time Polymerase Chain Reaction
Emerging Infectious Diseases, 2006 Rickettsia prowazekii is the causative agent of epidemic typhus and a potential bioterrorism agent. Sensitive and specific rapid assays are needed to complement existing methods of detecting this organism. We developed a real-time quantitative polymerase
Sanela Svraka +4 more
doaj +3 more sources
Rickettsioses in Latin America, Caribbean, Spain and Portugal [PDF]
Revista Mvz Cordoba, 2011 Data on genus and infectious by Rickettsia were retrospectively compiled from the critical review literature regarding all countries in Latin America, Caribbean islands, Portugal and Spain.
Marcelo B. Labruna +9 more
doaj +3 more sources
Analysis of the peptidoglycan of Rickettsia prowazekii [PDF]
Journal of Bacteriology, 1994 In the present study, peptidoglycan from Rickettsia prowazekii, an obligate intracellular bacterium, was purified. The rickettsial peptidoglycan is like that of gram-negative bacteria; that is, it is sodium dodecyl sulfate insoluble, lysozyme sensitive, and composed of glutamic acid, alanine, and diaminopimelic acid in a molar ratio of 1.0:2.3:1.0. The
H, Pang, H H, Winkler
openaire +2 more sources
Transport of AMP by Rickettsia prowazekii [PDF]
Journal of Bacteriology, 1985 Rickettsia prowazekii possesses an exchange transport system for AMP. Chromatographic analysis of the rickettsiae demonstrated that transported AMP appeared intracellularly as AMP, ADP, and ATP, and no hydrolytic products appeared in either the intracellular or extracellular compartments.
W H, Atkinson, H H, Winkler
openaire +2 more sources
Renewed Risk for Epidemic Typhus Related to War and Massive Population Displacement, Ukraine
Emerging Infectious Diseases, 2022 Epidemic typhus, caused by Rickettsia prowazekii bacteria and transmitted through body lice (Pediculus humanus corporis), was a major public health threat in Eastern Europe as a consequence of World War II.
Paul N. Newton +3 more
doaj +1 more source
Permeability of Rickettsia prowazekii to NAD [PDF]
Journal of Bacteriology, 1989 Rickettsia prowazekii accumulated radioactivity from [adenine-2,8-3H]NAD but not from [nicotinamide-4-3H]NAD, which demonstrated that NAD was not taken up intact. Extracellular NAD was hydrolyzed by rickettsiae with the products of hydrolysis, nicotinamide mononucleotide and AMP, appearing in the incubation medium in a time- and temperature-dependent ...
W H, Atkinson, H H, Winkler
openaire +2 more sources
Proline transport and metabolism in Rickettsia prowazekii [PDF]
Journal of Bacteriology, 1984 Purified Rickettsia prowazekii cells were able to transport L-proline. The influx of this amino acid had a Kt of 14 microM and a Vmax of about 64 pmol/min per mg of protein. Proline could not be transported by heat-killed or metabolically poisoned rickettsiae or at 0 degrees C. The uptake of proline was linear for almost 2 h.
H H, Winkler, R M, Daugherty
openaire +2 more sources
Genetic typing of isolates of Rickettsia typhi.
PLoS Neglected Tropical Diseases, 2022 Murine typhus, which is caused by Rickettsia typhi, has a wide range of clinical manifestations. It has a low mortality rate but may result in meningoencephalitis and interstitial pneumonia in severe cases.
Cecilia Y Kato +4 more
doaj +1 more source
Inactivation of SAM-methyltransferase is the mechanism of attenuation of a historic louse borne typhus vaccine strain. [PDF]
PLoS ONE, 2014 Louse borne typhus (also called epidemic typhus) was one of man's major scourges, and epidemics of the disease can be reignited when social, economic, or political systems are disrupted.
Yan Liu +4 more
doaj +1 more source