AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesInformation ScienceHealth Care
EhrlichiaEhrlichia chaffeensisEhrlichia canisEhrlichiosisEhrlichia ruminantiumRickettsiaceaeRickettsiaceae InfectionsAnaplasmaDog DiseasesTicksRNA, Ribosomal, 16SAnaplasmataceaePhylogenyDNA, RibosomalDNA, BacterialIxodesHeartwater DiseaseDogsTick-Borne DiseasesHorse DiseasesTick InfestationsMolecular Sequence DataAnaplasmosisSequence Analysis, DNAAntibodies, BacterialPolymerase Chain ReactionArachnid VectorsNeorickettsiaHorsesAnaplasma phagocytophilumRickettsiaGenes, rRNAArthropod VectorsAntigens, BacterialSpecies SpecificityIxodidaeAnaplasmataceae InfectionsRNA, BacterialDeerBabesiaRickettsia rickettsiiRickettsieaeAnaplasma centraleRhipicephalus sanguineusBase CompositionBase SequenceDoxycyclineFluorescent Antibody Technique, IndirectBartonellaSerologic TestsBacterial ProteinsChaperoninsDisease ReservoirsChromosome WalkingGranulocytesBacterial Typing TechniquesAnaplasma marginaleBacterial Outer Membrane ProteinsSeroepidemiologic StudiesOxytetracyclineArgasGenes, BacterialNymphBabesiosis
AnaplasmaRickettsiaBlacklegged ticksCanisNeorickettsiaEwingiiSpeciesEhrlichiosisAnaplasmataceaeRickettsialesRuminantiumInfectionIntracellularOrganismsPolymerase chain reChaffeensis causesRisticiiMurisIxodesPathogensRickettsialBartonellaMycoplasmaBacterial2020PlatysHumansNCBIAmblyommaAntibodies2017Monocytes2016CandidatusGenomeCoxiellaSerumGene expressionSurvival
Anaplasma24
Rickettsia12
  • It was initially named Rickettsia ruminantium, and is currently named Ehrlichia ruminantium. (wikipedia.org)
  • They are caused by bacterial species of the genus Rickettsia and the closely related, but genetically distinct, genus Orientia . (health.mil)
  • The Rickettsia and Orientia genera both encompass a large group of obligate intracellular, gram-negative bacteria. (health.mil)
  • Species classified within the genus Rickettsia are generally divided into 4 groups (i.e., clades). (health.mil)
  • 7 Understanding of the epidemiology of rickettsial diseases continues to evolve as new information accumulates about the expanding geographic distribution of the causative pathogens, 8 the emergence of antibiotic-resistant strains,9 and the discovery of new species in the genera Rickettsia and Orientia . (health.mil)
  • METHODS: Ticks submitted by study participants from April-September 2011 and 2012 were identified to species and life stage, and preliminarily screened for the genus Rickettsia by nested PCR targeting the 17-kDa protein gene. (cdc.gov)
  • Ehrlichia chaffeensis is an intracellular rickettsia-like bacterium that preferentially infects monocytes and is sequestered in parasitophorous vacuoles referred to as morulae. (testcatalog.org)
  • About 30 species have been described within the genus Rickettsia . (vetbact.org)
  • The results revealed co-circulation of five recognized Rickettsiales species including Rickettsia, Ehrlichia and Wolbachia, as well as four tentative novel species, including one tentative novel genus named Neowolbachia. (uibk.ac.at)
  • The Department of State Health Services (DSHS) has partnered with the University of North Texas Health Science Center (UNTHSC) Tick-Borne Disease Research Laboratory to test ticks for disease agents in the Borrelia, Ehrlichia, and Rickettsia genera using molecular methods. (txlymealliance.org)
  • This tick species is a known vector for Rickettsial organisms, Rickettsia parkeri, and Ehrlichia ruminantium, formerly Cowdria ruminantium. (health.mil)
  • 1-3 SFR infections are caused by bacterial species of the genus Rickettsia. (health.mil)
Blacklegged ticks1
  • So, to calculate the relative risk of getting ehrlichiosis compared to Lyme disease, we multiplied the abundance of lone star ticks times the chance of their being infected with Ehrlichia , and then divided that by the abundance of blacklegged ticks times their chance of their being infected with Borrelia burgdorferi . (cdc.gov)
Canis5
  • citation needed] The following species have been effectively and validly published: Ehrlichia canis (Donatien and Lestoquard 1935) Moshkovski 1945 (Approved Lists 1980) Ehrlichia chaffeensis Anderson et al. (wikipedia.org)
  • Ehrlichia canis (E. canis) and Ehrlichia risticii (E. risticii) are believed to be the primary causative agents in the cat. (petplace.com)
  • Ehrlichia canis has a worldwide distribution, but the main clinical manifestations of the disease may vary in different locations. (vin.com)
  • ). Ehrlichia canis (E.canis) primarily transmits through the bites of infected brown dog ticks. (vetfor.com)
  • Interestingly, the 5' structure of this A. marginale msp2 locus is conserved in the omp1 gene locus of Ehrlichia chaffeensis and p30 gene locus of E. canis despite marked divergence between genera in the structure of the 3' region of the loci. (oregonstate.edu)
Neorickettsia1
  • Neorickettsia risticii and Rocky Mountain spotted fever, Mycoplasma genus PCR. (abrint.net)
Ewingii5
Species13
  • Ehrlichia species are obligately intracellular pathogens and are transported between cells through the host cell filopodia during initial stages of infection, whereas in the final stages of infection, the pathogen ruptures the host cell membrane. (wikipedia.org)
  • A new species of Ehrlichia was discovered inside the deer tick Ixodes scapularis. (wikipedia.org)
  • The species is known as Ehrlichia Wisconsin HM543746. (wikipedia.org)
  • 2001 Ehrlichia sennetsu (Misao and Kobayashi 1956) Ristic and Huxsoll 1984 The following species have been published, but are not valid according to the Bacteriological Code: "Ehrlichia japonica" Lin et al. (wikipedia.org)
  • 2021 "Ehrlichia ovina" Moshkovski 1945 "Ehrlichia platys" French and Harvey 1983 The following species have been published as candidatus species: "Candidatus Ehrlichia corsicanum" Cicculli et al. (wikipedia.org)
  • Andrea Egizi] Ehrlichiosis is the name of a human disease caused by a particular species of bacteria, in the genus Ehrlichia . (cdc.gov)
  • Scrub typhus is a potentially fatal acute febrile disease transmitted by larval mites (i.e., "chiggers"), primarily of species of the genus Leptotrombidium that are infected by the obligate intracellular bacteria O. tsutsugamushi . (health.mil)
  • HME is now referred to as ehrlichiosis, which is caused by one of three Ehrlichia species, primarily E. chaffeensis . (texas.gov)
  • Use of these probes enabled the identification of the Eastern gray squirrel as an important bloodmeal source in nymphs harboring Ehrlichia and Borrelia species. (illinois.edu)
  • Sequencing of 16S rDNA, sodB, and groEL genes indicated that the bacterium is most likely a novel Ehrlichia species. (cdc.gov)
  • Two recently identified new species are Ehrlichia sp. (cdc.gov)
  • The ticks were morphologically identified to species and tested for Ehrlichia infection via polymerase chain reaction (PCR), using genus-specific disulphide bond formation protein (dsbA) gene primers. (smu.ac.za)
  • A homology search of the generated sequences revealed a high percentage of identity between 95% and 98% with other homologous dsbA gene sequences of other Ehrlichia species in GenBank. (smu.ac.za)
Ehrlichiosis6
Anaplasmataceae1
  • Phylogenetic analysis of the 16S rRNA gene sequence of the bacterium found in R. norvegicus rats and Ixodes ovatus ticks in Japan revealed that the organism represents a novel clade in the family Anaplasmataceae, which includes the Schotti variant found in Ixodes ricinus ticks in the Netherlands and the Ehrlichia-like Rattus strain found in R. norvegicus rats from China. (uibk.ac.at)
Rickettsiales1
  • Ehrlichia is a genus of Rickettsiales bacteria that are transmitted to vertebrates by ticks. (wikipedia.org)
Ruminantium1
Infection3
  • Despite its small genome and limited number of effector proteins, Ehrlichia efficiently establishes an intracellular infection and avoids immune defenses in vertebrate and invertebrate hosts through complex molecular and cellular reprogramming strategies. (frontiersin.org)
  • For example, we have studied that role of a type of antibody, known as IgM, and the particular B cells that generate these antibodies, during both acute and chronic infection by a rickettsiae of the genus ehrlichia. (upstate.edu)
  • However, DNA analyses have shown N risticii is most closely related to N helminthoeca , the agent of salmon poisoning in dogs, and Ehrlichia sennetsu , which causes a rare infection in humans in Japan. (merckvetmanual.com)
Intracellular2
  • Ehrlichia chaffeensis is a small, gram negative, obligately intracellular bacterium that preferentially infects mononuclear phagocytes. (frontiersin.org)
  • In this review, we discuss the recent advances in our understanding of the molecular and cellular mechanisms that underlie Ehrlichia host cellular reprogramming strategies that enable intracellular survival. (frontiersin.org)
Organisms2
Polymerase chain re2
Chaffeensis causes1
  • Ehrlichia chaffeensis causes a tick-borne disease affecting both animals and humans. (kenyon.edu)
Risticii2
  • 1995 Ehrlichia risticii Holland et al. (wikipedia.org)
  • Initial morphologic studies of this organism isolated from cell culture, as well as the serologic responses of N risticii , caused this bacterium to be assigned to the genus Ehrlichia . (merckvetmanual.com)
Muris1
Ixodes1
Pathogens1
Rickettsial2
  • Ehrlichia HME or HGE (rickettsial diseases related to RMSF) may be fatal, however, milder and chronic forms do exist. (google.com)
  • While at Yangzhou University, Ganta gave a research presentation titled, "Tractable mutagenesis to study pathogenesis and vaccine development tick-borne rickettsial bacteria of the genus Ehrlicha. (k-state.edu)
Bartonella1
  • For the past decade, we have emphasized studies directed at the genus Bartonella. (ncsu.edu)
Mycoplasma1
  • About 2 years ago, the taxonomy of mycoplasmas was revised at VetBact, because a research group had proposed that 5 new genera should be included together with the genus Mycoplasma . (vetbact.org)
Bacterial1
  • These results were confirmed by identifying these same bacterial genera in Eastern gray squirrel tissues. (illinois.edu)
20202
Platys1
  • A. phagocytophilum and A. platys ), B. burgdorferi sensu stricto, and Ehrlichia spp. (cdc.gov)
Humans1
  • Bacteria of the genus Ehrlichia cause a variety of diseases, both in humans and animals. (texas.gov)
NCBI1
  • Ehrlichia - Taxon details on National Center for Biotechnology Information (NCBI). (wikimedia.org)
Amblyomma1
  • Incluye la garrapata estrella solitaria, Amblyomma americanum, y la garrapata de la costa del Golfo, Amblyomma maculatum, en América. (bvsalud.org)
Antibodies1
20171
Monocytes1
  • Ehrlichia primarily targets monocytes and macrophages , and it infects them using tandem repeat proteins, or TRP. (osmosis.org)
20162
Candidatus4
Genome1
  • 2003 The Ehrlichia genome contains many different variants of genes that encode outer membrane proteins, which have gone through intense modification over long periods of time. (wikipedia.org)
Coxiella1
Serum3
  • 6 , 7 ) in horse serum, no reports have documented isolation or PCR detection of Ehrlichia spp. (cdc.gov)
  • According to assay results, 51 (55%) horse serum samples were Ehrlichia spp. (cdc.gov)
  • The patient's serum is diluted and is placed in microscopic slide wells that have been coated with Ehrlichia chaffeensis -infected cells. (testcatalog.org)
Gene expression1
Survival1