| partial disruption of translational and posttranslational machinery reshapes growth rates of bartonella birtlesii. | specialization of bacteria in a new niche is associated with genome repertoire changes, and speciation in bacterial specialists is associated with genome reduction. here, we tested a signature-tagged mutant library of 3,456 bartonella birtlesii clones to detect mutants that could grow rapidly in vitro. overall, we found 124 mutants that grew faster than the parental wild-type strain in vitro. we sequenced the genomes of the four mutants with the most rapid growth (formed visible colonies in only ... | 2013 | 23611908 |
| questing ticks in suburban forest are infected by at least six tick-borne pathogens. | abstract the role of ixodes ricinus ticks in the transmission of pathogens of public health importance such as borrelia burgdorferi s.l. is widely recognized and is suspected in several emerging vector-borne pathogens in europe. here, we assess prevalence rates of several endemic and emerging zoonotic pathogens in tick populations in an area of high human population density in france, to contribute to a risk assessment for potential transmission to humans. pathogen prevalence rates were evaluate ... | 2010 | 21158500 |
| in vitro effect of bartonella birtlesii on mouse red cell viability. | | 2009 | 19438632 |
| identification of mechanisms involved in iron and haem uptake in bartonella birtlesii: in silico and in vivo approaches. | | 2009 | 19438629 |
| disruption of a host-parasite system following the introduction of an exotic host species. | the potential of biological invasions to threaten native ecosystems is well recognized. here we describe how an introduced species impacts on native host-parasite dynamics by acting as an alternative host. by sampling sites across an invasion front in ireland, we quantified the influence of the introduced bank vole (clethrionomys glareolus) on the epidemiology of infections caused by flea-transmitted haemoparasites of the genus bartonella in native wood mice (apodemus sylvaticus). bartonella inf ... | 2005 | 15977903 |
| kinetics of bartonella birtlesii infection in experimentally infected mice and pathogenic effect on reproductive functions. | the kinetics of infection and the pathogenic effects on the reproductive function of laboratory mice infected with bartonella birtlesii recovered from an apodemus species are described. b. birtlesii infection, as determined by bacteremia, occurred in balb/c mice inoculated intravenously. inoculation with a low-dose inoculum (1.5 x 10(3) cfu) induced bacteremia in only 75% of the mice compared to all of the mice inoculated with higher doses (> or =1.5 x 10(4)). mice became bacteremic for at least ... | 2001 | 11500400 |
| murine model for bartonella birtlesii infection: new aspects. | as a model of persistent infection, various aspects of bartonella birtlesii infection in laboratory mice, including some immunodeficient mice, are presented, particularly focusing on conditions mimicking natural infection. bacteraemia was explored using different mice strains routes and inoculum doses (3.4-5x10(7)cfu/mouse). mice became bacteraemic for 5 (c57bl6/6) to 10 weeks (balb/c, swiss) with peaks ranging from 2x10(3) to 10(5)cfu/ml of blood. the id route induced the most precocious bacter ... | 2010 | 20097421 |
| role of the spleen in bartonella spp. infection. | bartonella spp. are intra-erythrocytic pathogens of mammals. in this study, we investigated the role of the spleen, and other tissue and organs in bartonella infection. using an in vivo model of mice infection by bartonella birtlesii, we detected accumulation of bacteria in the spleen, with transient infection of the liver, but failed to detect any bacteria in brain or lymph nodes. we then compared bacteraemia in normal balb/c mice and in splenectomized mice. bacteraemia in splenectomized mice w ... | 2011 | 22098417 |
| genetic diversity of bartonella spp. in wild mammals and ectoparasites in brazilian pantanal. | the present work aimed to investigate the genetic diversity of bartonella in mammals and ectoparasites in pantanal wetland, brazil. for this purpose, 31 nasua nasua, 78 cerdocyon thous, 7 leopardus pardalis, 110 wild rodents, 30 marsupials, and 42 dogs were sampled. dna samples were submitted to a quantitative real-time pcr assay (qpcr). positive samples in qpcr were submitted to conventional pcr assays targeting other five protein-coding genes. thirty-five wild rodents and three polygenis (p.) ... | 2018 | 29313064 |
| genome sequence of bartonella birtlesii, a bacterium isolated from small rodents of the genus apodemus. | bartonella birtlesii is a facultative intracellular bacterium isolated from the blood of small mammals of the genus apodemus. the present study reports the draft genome of bartonella birtlesii strain ibs 135(t) (cip 106691(t)). | 2012 | 22887676 |
| identification and functional analysis of invasion associated locus b (ialb) in bartonella species. | bartonellosis is caused by the genus bartonella. bartonella is widely distributed in the ruminants, cats, dogs, rodents and other mammals including humans. at least 13 species or subspecies of bartonella are zoonotic, and each species appears to be highly adapted to one or a limited number of reservoir animals in which it is asymptomatic, while it can be transmitted to humans in which a variety of clinical manifestations can be caused. it was reported that bartonella henselae infection rate amon ... | 2016 | 27515099 |
| vector competence of the tick ixodes ricinus for transmission of bartonella birtlesii. | bartonella spp. are facultative intracellular vector-borne bacteria associated with several emerging diseases in humans and animals all over the world. the potential for involvement of ticks in transmission of bartonella spp. has been heartily debated for many years. however, most of the data supporting bartonellae transmission by ticks come from molecular and serological epidemiological surveys in humans and animals providing only indirect evidences without a direct proof of tick vector compete ... | 2011 | 21655306 |
| the trw type iv secretion system of bartonella mediates host-specific adhesion to erythrocytes. | bacterial pathogens typically infect only a limited range of hosts; however, the genetic mechanisms governing host-specificity are poorly understood. the alpha-proteobacterial genus bartonella comprises 21 species that cause host-specific intraerythrocytic bacteremia as hallmark of infection in their respective mammalian reservoirs, including the human-specific pathogens bartonella quintana and bartonella bacilliformis that cause trench fever and oroya fever, respectively. here, we have identifi ... | 2010 | 20548954 |
| characterization of genes involved in long-term bacteremia in mice by bartonella birtlesii. | | 2005 | 16481533 |
| identification of a new nanornase in bartonella. | in escherichia coli, only one essential oligoribonuclease (orn) can degrade oligoribonucleotides of five residues and shorter in length (nanorna). in bacillus subtilis, nrna and nrnb, which do not have any sequence similarity with orn, have been identified as functional analogs of orn. sequence comparisons did not allow identifying orn, nrna, or nrnb homologues in the genomes of the chlamydia/cyanobacteria and alphaproteobacteria family members. screening a genomic library from bartonella birtle ... | 2012 | 22262096 |
| molecular detection of bartonella species infecting rodents in slovenia. | rodents, collected in three zoogeographical regions across slovenia, were tested for the presence of bartonellae using direct pcr-based amplification of 16s/23s rrna gene intergenic spacer region (its) fragments from splenic dna extracts. bartonella dna was detected in four species of rodents, apodemus flavicollis, apodemus sylvaticus, apodemus agrarius and clethrionomys glareolus, in all three zoogeographic regions at an overall prevalence of 40.4%. the prevalence of infection varied significan ... | 2007 | 17374132 |
| phylogenetic classification of bartonella species by comparing groel sequences. | bartonella is a bacterial genus classified in the alpha-proteobacteria on the basis of 165 rdna sequence comparison. the highly conserved heat-shock chaperonin protein, groel, has proved to be a valuable resolving tool to classify ten bartonella species. the groel gene was amplified and sequenced from ten bartonella isolates: bartonella alsatica, bartonella vinsonii subsp. arupensis, bartonella taylorii, bartonella tribocorum, bartonella birtlesii, bartonella henselae marseille (urlly8), b. hens ... | 2002 | 11837299 |
| bartonella birtlesii sp. nov., isolated from small mammals (apodemus spp.). | three strains isolated from apodemus spp. were similar to bartonella species on the basis of phenotypic characteristics. futhermore, genotypic analysis based on sequence analysis of the 16s rrna and glta genes and on dna-dna hybridization showed that the three isolates represented a distinct and new species of bartonella. the name bartonella birtlesii is proposed for the new species. the type strain of b. birtlesii sp. nov. is ibs 325t (= cip 106294t = ccug 44360t). | 2000 | 11155970 |