rickettsiaceae

Summary

Summary: A family of small, gram-negative organisms, often parasitic in humans and other animals, causing diseases that may be transmitted by invertebrate vectors.

Top Publications

  1. Boyle L, O Neill S, Robertson H, Karr T. Interspecific and intraspecific horizontal transfer of Wolbachia in Drosophila. Science. 1993;260:1796-9 pubmed
    ..These data suggest that a threshold level of infection is required for normal expression of CI and that host factors help determine the density of the symbiont in the host...
  2. Sicheritz Pont n T, Kurland C, Andersson S. A phylogenetic analysis of the cytochrome b and cytochrome c oxidase I genes supports an origin of mitochondria from within the Rickettsiaceae. Biochim Biophys Acta. 1998;1365:545-51 pubmed
    ..hypothesis that mitochondria are derived from the alpha-proteobacteria and more specifically from within the Rickettsiaceae. We have estimated that the common ancestor of mitochondria and Rickettsiaceae dates back to more than 1500 ..
  3. Ferrantini F, Fokin S, Modeo L, Andreoli I, Dini F, Görtz H, et al. "Candidatus Cryptoprodotis polytropus," a novel Rickettsia-like organism in the ciliated protist Pseudomicrothorax dubius (Ciliophora, Nassophorea). J Eukaryot Microbiol. 2009;56:119-29 pubmed publisher
    ..the 16S rRNA gene supports the inclusion of "Candidatus Cryptoprodotis polytropus" within the family Rickettsiaceae (cl. Alphaproteobacteria) together with the genera Rickettsia and Orientia...
  4. Ralph D, Pretzman C, Daugherty N, Poetter K. Genetic relationships among the members of the family rickettsiaceae as shown by DNA restriction fragment polymorphism analysis. Ann N Y Acad Sci. 1990;590:541-52 pubmed
    ..R. conorii was very closely related to this R. rickettsii-containing group but is likely to remain in a genetically distinct category as the data base expands...
  5. Cianciotto N, O Connell W, Dasch G, Mallavia L. Detection of mip-like sequences and Mip-related proteins within the family Rickettsiaceae. Curr Microbiol. 1995;30:149-53 pubmed
    ..However, they also indicate that care must be exercised when using mip probes or anti-Mip antibodies for the detection of Legionella organisms in water or clinical samples...
  6. Emelyanov V. Rickettsiaceae, rickettsia-like endosymbionts, and the origin of mitochondria. Biosci Rep. 2001;21:1-17 pubmed
    ..This large group of obligate intracellular alpha-Proteobacteria includes the family Rickettsiaceae and several rickettsia-like endosymbionts (RLEs)...
  7. Vannini C, Petroni G, Verni F, Rosati G. A bacterium belonging to the Rickettsiaceae family inhabits the cytoplasm of the marine ciliate Diophrys appendiculata (Ciliophora, Hypotrichia). Microb Ecol. 2005;49:434-42 pubmed
    Bacteria of the family Rickettsiaceae (order Rickettsiales, alpha-Proteobacteria) are mainly known to be endosymbionts of arthropods with the capability to infect also vertebrate cells...
  8. Williams K, Sobral B, Dickerman A. A robust species tree for the alphaproteobacteria. J Bacteriol. 2007;189:4578-86 pubmed
    ..The mitochondrial branch was placed within the Rickettsiales as a sister to the combined Anaplasmataceae and Rickettsiaceae, all subtended by the Pelagibacter branch...
  9. Kawafune K, Hongoh Y, Hamaji T, Nozaki H. Molecular identification of rickettsial endosymbionts in the non-phagotrophic volvocalean green algae. PLoS ONE. 2012;7:e31749 pubmed publisher
    ..This group is medically important because it contains human-pathogenic species that cause dangerous diseases. Until now, there has been no report of non-phagotrophic photosynthetic eukaryotes, such as green plants, harboring rickettsias...

More Information

Publications103 found, 100 shown here

  1. Dumler J, Barbet A, Bekker C, Dasch G, Palmer G, Ray S, et al. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species . Int J Syst Evol Microbiol. 2001;51:2145-65 pubmed
    ..and Wolbachieae be transferred to the family Anaplasmataceae and that the tribe structure of the family Rickettsiaceae be eliminated. The genus Anaplasma should be emended to include Anaplasma (Ehrlichia) phagocytophila comb. nov...
  2. Davis A, Devore J, Milanovich J, Cecala K, Maerz J, Yabsley M. New findings from an old pathogen: intraerythrocytic bacteria (family Anaplasmatacea) in red-backed salamanders Plethodon cinereus. Ecohealth. 2009;6:219-28 pubmed publisher
  3. Gillespie J, Brayton K, Williams K, Diaz M, Brown W, Azad A, et al. Phylogenomics reveals a diverse Rickettsiales type IV secretion system. Infect Immun. 2010;78:1809-23 pubmed publisher
    ..has yet to be proposed...
  4. Gokuden M, Ishitani K, Yoshikuni K, Ueno N, Shinkawa N, Kuramoto T, et al. Epidemiology of tsutsugamushi disease and Japanese spotted fever in Kagoshima Prefecture, Japan. Jpn J Infect Dis. 2006;59:273 pubmed
  5. Sinkins S, Braig H, O Neill S. Wolbachia superinfections and the expression of cytoplasmic incompatibility. Proc Biol Sci. 1995;261:325-30 pubmed
    ..The results also have applied significance for the generation of insect lines capable of driving desirable genes into populations already infected with Wolbachia, thus allowing repeated opportunities for population replacement. ..
  6. Letaief A, Yacoub S, Dupont H, Le Cam C, Ghachem L, Jemni L, et al. Seroepidemiological survey of rickettsial infections among blood donors in central Tunisia. Trans R Soc Trop Med Hyg. 1995;89:266-8 pubmed
    ..No significant difference was detected between urban and rural areas. This study confirmed the endemicity of rickettsioses, and revealed a high seroprevalence of Q fever, in central Tunisia...
  7. Van Meer M, van Kan F, Stouthamer R. Spacer 2 region and 5S rDNA variation of Wolbachia strains involved in cytoplasmic incompatibility or sex-ratio distortion in arthropods. Lett Appl Microbiol. 1999;28:17-22 pubmed
    ..The SR2 of Wolbachia is 66 bp long, shows higher variation than ftsZ and has very low homology with closely related bacteria. Due to the small length of SR2 of Wolbachia, little phylogenetic information could be retrieved. ..
  8. Keysary A, Eremeeva M, Leitner M, Din A, Wikswo M, Mumcuoglu K, et al. Spotted fever group rickettsiae in ticks collected from wild animals in Israel. Am J Trop Med Hyg. 2011;85:919-23 pubmed publisher
    ..The epidemiology and ecology of SFGR in Israel appear to be more complicated than was previously believed...
  9. Smith P, Pizarro P, Ojeda P, Contreras J, Oyanedel S, Larenas J. Routes of entry of Piscirickettsia salmonis in rainbow trout Oncorhynchus mykiss. Dis Aquat Organ. 1999;37:165-72 pubmed
    ..Results suggested that the main entry sites are through the skin and gills and that the oral route may not be the normal method by which P. salmonis initiates infection of salmonids...
  10. Banajee K, Verhoeve V, Harris E, Macaluso K. Effect of Amblyomma maculatum (Acari: Ixodidae) Saliva on the Acute Cutaneous Immune Response to Rickettsia parkeri Infection in a Murine Model. J Med Entomol. 2016;53:1252-1260 pubmed
    Rickettsia parkeri Luckman (Rickettsiales: Rickettsiaceae) is a pathogenic spotted fever group Rickettsia transmitted by Amblyomma maculatum Koch (Acari: Ixodidae) in the United States...
  11. Nakayama K, Kurokawa K, Fukuhara M, Urakami H, Yamamoto S, Yamazaki K, et al. Genome comparison and phylogenetic analysis of Orientia tsutsugamushi strains. DNA Res. 2010;17:281-91 pubmed publisher
    Orientia tsutsugamushi (OT) is an obligate intracellular bacterium belonging to the family Rickettsiaceae and is the causative agent of scrub typhus, or Tsutsugamushi disease...
  12. Olchowy T, Ames T, Molitor T. Serodiagnosis of equine monocytic ehrlichiosis in selected groups of horses in Minnesota. J Am Vet Med Assoc. 1990;196:1967-70 pubmed
  13. Shankarappa B, Dutta S. Production and characterization of monoclonal antibodies to Ehrlichia risticii. Am J Vet Res. 1989;50:1145-9 pubmed
    ..By use of the different monoclonal antibodies as probes, more definitive molecular studies now will be feasible. ..
  14. Wells M, Rikihisa Y. Lack of lysosomal fusion with phagosomes containing Ehrlichia risticii in P388D1 cells: abrogation of inhibition with oxytetracycline. Infect Immun. 1988;56:3209-15 pubmed
    ..These findings indicate that E. risticii is able to inhibit P-L fusion, whereas oxytetracycline deprives organisms of this ability. ..
  15. Nagano I, Kasuya S, Noda N, Yamashita T. Virulence in mice of Orientia tsutsugamushi isolated from patients in a new endemic area in Japan. Microbiol Immunol. 1996;40:743-7 pubmed
    ..After infection with the GJ-1 strain, these symptoms were not observed. Antibody responses induced by infections with highly virulent strains were lower than that with low or intermediate virulent strains...
  16. Martinez D, Swinkels J, Camus E, Jongejan F. [Comparison between 3 antigens for the serodiagnosis of heartwater disease by indirect immunofluorescence]. Rev Elev Med Vet Pays Trop. 1990;43:159-66 pubmed
  17. House M, Bartholomew J, Winton J, Fryer J. Relative virulence of three isolates of Piscirickettsia salmonis for coho salmon Oncorhynchus kisutch. Dis Aquat Organ. 1999;35:107-13 pubmed
    ..These differences in virulence among the isolates were statistically significant (p < 0.0001), and are important for the management of affected stocks of fish...
  18. Li T, Xiao J, Xu Z, Murphy R, Huang D. Cellular tropism, population dynamics, host range and taxonomic status of an aphid secondary symbiont, SMLS (Sitobion miscanthi L type symbiont). PLoS ONE. 2011;6:e21944 pubmed publisher
    ..Phylogenetic evidence from molecular markers indicates that SMLS belongs to the Rickettsiaceae and has a sibling relationship with Orientia tsutsugamushi...
  19. Sutáková G, Rehacek J. Experimental infection with Rickettsiella phytoseiuli in adult female Dermacentor reticulatus (Ixodidae): an electron microscopy study. Exp Appl Acarol. 1989;7:299-311 pubmed
    ..Rickettsiella phytoseiuli did not infect the Gené's organ. It multiplied in female ticks in a manner similar to that in the typical host mite, P. persimilis. ..
  20. Pretzman C, Ralph D, Stothard D, Fuerst P, Rikihisa Y. 16S rRNA gene sequence of Neorickettsia helminthoeca and its phylogenetic alignment with members of the genus Ehrlichia. Int J Syst Bacteriol. 1995;45:207-11 pubmed
    Neorickettsia helminthoeca (tribe Ehrlichieae, family Rickettsiaceae) is the agent of salmon poisoning disease, which affects members of the family Canidae...
  21. Buoro I, Atwell R, Kiptoon J, Ihiga M. Feline anaemia associated with Ehrlichia-like bodies in three domestic short-haired cats. Vet Rec. 1989;125:434-6 pubmed
    ..An attempt to culture chlamydia from one of the cats was unsuccessful. The cats were treated successfully, one with tetracycline hydrochloride and the other two with imidocarb dipropionate. ..
  22. Shpynov S, Pozdnichenko N, Gumenuk A. Approach for classification and taxonomy within family Rickettsiaceae based on the Formal Order Analysis. Microbes Infect. 2015;17:839-44 pubmed publisher
    ..Rickettsia felis URRWXCal2 and R. akari Hartford were not in the same group based on FOA, therefore designation of a so-called transitional Rickettsia group could not be confirmed with this approach. ..
  23. Rikihisa Y. Cross-reacting antigens between Neorickettsia helminthoeca and Ehrlichia species, shown by immunofluorescence and Western immunoblotting. J Clin Microbiol. 1991;29:2024-9 pubmed
    ..canis shared fewer common antigens with E. risticii and E. sennetsu than N. helminthoeca did. It is reasonable to conclude that these results may have both diagnostic and taxonomic significance. ..
  24. Wilkins S, Ambrosio R. A differential lysis method for the isolation of Cowdria ruminantium DNA. Vet Microbiol. 1990;25:39-44 pubmed
    ..Infected host cells were treated with trypsin followed by DNase digestion and centrifugation. This method resulted in the isolation of intact Cowdria organisms and removed bovine DNA effectively. ..
  25. Viljoen G, Vermeulen N, Neitz A. Theoretical aspects of the enzyme-linked immunosorbent assay technique and its use in the detection of Cowdria ruminantium antigen and antibody in reacting animals. Onderstepoort J Vet Res. 1987;54:305-12 pubmed
    ..Of all the blood fractions investigated, the red blood cell fraction showed the highest concentration and this reached a maximum on the 12th day after infection. ..
  26. Rousset F, Bouchon D, Pintureau B, Juchault P, Solignac M. Wolbachia endosymbionts responsible for various alterations of sexuality in arthropods. Proc Biol Sci. 1992;250:91-8 pubmed
    ..Isopod endosymbionts form a separate lineage, and they can determine feminization as well as cytoplasmic incompatibility. The ability to determine cytoplasmic incompatibility, found in all lineages, is probably ancestral to this group. ..
  27. Rigaud T, Bouchon D, Souty Grosset C, Raimond R. Mitochondrial DNA polymorphism, sex ratio distorters and population genetics in the isopod Armadillidium vulgare. Genetics. 1999;152:1669-77 pubmed
    ..The analysis of molecular variance indicated that A. vulgare populations are genetically structured, but without isolation by distance. ..
  28. Darriba S, Ruiz M, Lopez C. Phage particles infecting branchial Rickettsiales-like organisms in banded carpet shell Polititapes virgineus (Bivalvia) from Galicia (NW Spain). Dis Aquat Organ. 2012;100:269-72 pubmed publisher
    ..This is the first report of the presence of phage particles in Rickettsiales-like organisms in the gills of P. virgineus. ..
  29. Kularatne S, Rajapakse R, Wickramasinghe W, Nanayakkara D, Budagoda S, Weerakoon K, et al. Rickettsioses in the central hills of Sri Lanka: serological evidence of increasing burden of spotted fever group. Int J Infect Dis. 2013;17:e988-92 pubmed publisher
    ..None of the 105 patients had an eschar. It appears that SFG rickettsioses are on the rise in the hilly Central Province of Sri Lanka, whilst murine typhus and scrub typhus are present at a lower rate. ..
  30. Tarragona E, Soares J, Costa F, Labruna M, Nava S. Vectorial competence of Amblyomma tonelliae to transmit Rickettsia rickettsii. Med Vet Entomol. 2016;30:410-415 pubmed publisher
    ..competence of Amblyomma tonelliae (Ixodida: Ixodidae) to transmit Rickettsia rickettsii (Rickettsiales: Rickettsiaceae), the agent of Rocky Mountain spotted fever (RMSF). All parasitic stages of A.?tonelliae were exposed to R...
  31. Welch D, Pickett D, Slater L, Steigerwalt A, Brenner D. Rochalimaea henselae sp. nov., a cause of septicemia, bacillary angiomatosis, and parenchymal bacillary peliosis. J Clin Microbiol. 1992;30:275-80 pubmed
    ..felis. R. henselae is the proposed species of a newly recognized member of the family Rickettsiaceae, which is a pathogen that may be encountered in immunocompromised or immunocompetent patients...
  32. Jongejan F, Thielemans M, de Groot M, van Kooten P, van der Zeijst B. Competitive enzyme-linked immunosorbent assay for heartwater using monoclonal antibodies to a Cowdria ruminantium-specific 32-kilodalton protein. Vet Microbiol. 1991;28:199-211 pubmed
    ..Lack of cross-reactivity and detection of antibodies to eight geographically widely distributed stocks of Cowdria, makes the competition ELISA a promising test for use in heartwater endemic areas. ..
  33. Hahn N, Fletcher M, Rice R, Kocan K, Hansen J, Hair J, et al. Attempted transmission of Ehrlichia risticii, causative agent of Potomac horse fever, by the ticks, Dermacentor variabilis, Rhipicephalus sanguineus, Ixodes scapularis and Amblyomma americanum. Exp Appl Acarol. 1990;8:41-50 pubmed
    ..Molted exposed ticks were then allowed to feed on susceptible ponies or mice. No evidence of transmission, either clinically or by detection of antibodies to E. risticii in mice or ponies, was observed for any tick species examined. ..
  34. Ignatovich V, Penkina G, Umnova N. Seroimmunological monitoring of several species of Rickettsiaceae and Bartonellaceae circulating in the Moscow region. Ann N Y Acad Sci. 2003;990:419-23 pubmed
  35. Jongejan F, Bax R, Meddens M, Quint W. Cowdria ruminantium is recognized by a monoclonal antibody directed against the major outer membrane protein of Chlamydia trachomatis. Vet Microbiol. 1991;27:115-23 pubmed
    ..trachomatis cultivated in HeLa cells. It is concluded that Cowdria and Chlamydia are to a certain extent related, confirming similarities in ultrastructure and developmental cycle. ..
  36. Dawson J, Fishbein D, Eng T, Redus M, Green N. Diagnosis of human ehrlichiosis with the indirect fluorescent antibody test: kinetics and specificity. J Infect Dis. 1990;162:91-5 pubmed
    ..These results emphasize that patients suspected of having a tick-borne infection should be tested for antibodies to E. canis as well as for those to other rickettsiae...
  37. Rikihisa Y, Pretzman C, Johnson G, Reed S, Yamamoto S, Andrews F. Clinical, histopathological, and immunological responses of ponies to Ehrlichia sennetsu and subsequent Ehrlichia risticii challenge. Infect Immun. 1988;56:2960-6 pubmed
    ..risticii. ..
  38. Novakova M, Costa F, Krause F, Literak I, Labruna M. Rickettsia vini n. sp. (Rickettsiaceae) infecting the tick Ixodes arboricola (Acari: Ixodidae). Parasit Vectors. 2016;9:469 pubmed publisher
    ..japonica and R. heilongjiangensis), we propose to classify the isolate as a new species, Rickettsia vini. ..
  39. Hoskins J, Breitschwerdt E, Gaunt S, French T, Burgdorfer W. Antibodies to Ehrlichia canis, Ehrlichia platys, and spotted fever group rickettsiae in Louisiana dogs. J Vet Intern Med. 1988;2:55-9 pubmed
    ..Of 86 dogs tested, 44.2% were seronegative to E canis, E platys, and SFG rickettsiae...
  40. Williams J, Vodkin M. Metabolism and genetics of chlamydias and rickettsias. Onderstepoort J Vet Res. 1987;54:211-21 pubmed
    ..In this review we compare the metabolic capabilities and the genetic diversity of these different intracellular bacteria. ..
  41. Erwin J, Fitak R, Dwyer J, Morrison J, Culver M. Molecular detection of bacteria in the families Rickettsiaceae and Anaplasmataceae in northern crested caracaras (Caracara cheriway). Ticks Tick Borne Dis. 2016;7:470-4 pubmed publisher
    Bacterial pathogens of the families Anaplasmataceae and Rickettsiaceae are often spread to humans or other animals from bites from infected arthropod hosts...
  42. Sessitsch A, Ramírez Saad H, Hardarson G, Akkermans A, de Vos W. Classification of Austrian rhizobia and the Mexican isolate FL27 obtained from Phaseolus vulgaris L. as Rhizobium gallicum. Int J Syst Bacteriol. 1997;47:1097-101 pubmed
    ..The six strains investigated showed different plasmid profiles based on their geographical origins. We propose that the Austrian isolates and the Mexican strain FL27 are members of the species R. gallicum. ..
  43. Renvoise A, Raoult D. [An update on rickettsiosis]. Med Mal Infect. 2009;39:71-81 pubmed publisher
    Rickettsiae are strictly intracellular bacteria belonging to the Rickettsiaceae family. They are transmitted by various arthropods species, which are either vectors or reservoirs for the bacteria...
  44. Turelli M, Hoffmann A. Cytoplasmic incompatibility in Drosophila simulans: dynamics and parameter estimates from natural populations. Genetics. 1995;140:1319-38 pubmed
    ..Our parameter estimates accurately predict the frequency of Wolbachia infection in California populations. ..
  45. Weiss E, Dasch G, Kang Y, Westfall H. Substrate utilization by Ehrlichia sennetsu and Ehrlichia risticii separated from host constituents by renografin gradient centrifugation. J Bacteriol. 1988;170:5012-7 pubmed
    ..Glutamate was utilized to a much lesser extent than glutamine, and glucose was not utilized at all. No consistent differences in metabolic activities among the three strains were observed...
  46. Kocan K, Bezuidenhout J. Morphology and development of Cowdria ruminantium in Amblyomma ticks. Onderstepoort J Vet Res. 1987;54:177-82 pubmed
    ..Further studies are needed to completely understand the development of C. ruminantium in ticks and its subsequent transmission by these parasites...
  47. Braid B, Moore J, Robbins T, Hedrick R, Tjeerdema R, Friedman C. Health and survival of red abalone, Haliotis rufescens, under varying temperature, food supply, and exposure to the agent of withering syndrome. J Invertebr Pathol. 2005;89:219-31 pubmed
    ..Drug residue analysis indicated oxytetracycline concentrations of up to 600 ppm in the digestive gland at 38 days post-treatment, an unusual degree of tissue retention of this therapeutant...
  48. Goetz T, Holland C, Dawson J, Ristic M, Skibbe K, Keegan K, et al. Monthly prevalence (in 1986) of antibody titers against equine monocytic ehrlichiosis in apparently healthy horses in Illinois. Am J Vet Res. 1989;50:1936-9 pubmed
    ..It was concluded that a large number of horses in Illinois are exposed to E risticii, that maximal exposure occurs in July, and that the most common form of the disease in Illinois is not associated with clinical signs...
  49. Vermeulen N, Neitz A, Viljoen G. Purification of Cowdria ruminantium by lectin cellular affinity chromatography. Onderstepoort J Vet Res. 1987;54:233-46 pubmed
    ..Cellular affinity chromatography has been reviewed with special attention being given to the application of this technique in the isolation of rickettsiae...
  50. Hoffmann A, Clancy D, Duncan J. Naturally-occurring Wolbachia infection in Drosophila simulans that does not cause cytoplasmic incompatibility. Heredity (Edinb). 1996;76 ( Pt 1):1-8 pubmed
    ..These findings suggest that the Wolbachia infection behaves like a neutral variant in populations. The infection may represent an evolutionary outcome of interactions between Wolbachia infections and their hosts...
  51. Chang N, Wade M. An improved microinjection protocol for the transfer of Wolbachia pipientis between infected and uninfected strains of the flour beetle Tribolium confusum. Can J Microbiol. 1996;42:711-4 pubmed
    ..Compared with mock injected controls (35.9% survival) or microinjection of uninfected cytoplasm (32.3% survival), injection of Wolbachia-infected cytoplasm into host eggs significantly reduced egg-to-adult survival (25.1%)...
  52. Greub G, Raoult D. History of the ADP/ATP-translocase-encoding gene, a parasitism gene transferred from a Chlamydiales ancestor to plants 1 billion years ago. Appl Environ Microbiol. 2003;69:5530-5 pubmed
    ..Plant and alga plastids acquired tlc approximately when Parachlamydiaceae and Chlamydiaceae diverged, at the eucaryotic radiation time, ca. 1 billion years ago...
  53. Montagna M, Sassera D, Epis S, Bazzocchi C, Vannini C, Lo N, et al. "Candidatus Midichloriaceae" fam. nov. (Rickettsiales), an ecologically widespread clade of intracellular alphaproteobacteria. Appl Environ Microbiol. 2013;79:3241-8 pubmed publisher
  54. Paxton E, Scott G. Detection of antibodies to the agent of tick-borne fever by indirect immunofluorescence. Vet Microbiol. 1989;21:133-8 pubmed
    ..The test was compared with counter-immunoelectrophoresis...
  55. Welburn S, Gibson W. Cloning of a repetitive DNA from the rickettsia-like organisms of tsetse flies (Glossina spp.). Parasitology. 1989;98 ( Pt 1):81-4 pubmed
    ..l. and T. congolense infections...
  56. Weisburg W, Dobson M, Samuel J, Dasch G, Mallavia L, Baca O, et al. Phylogenetic diversity of the Rickettsiae. J Bacteriol. 1989;171:4202-6 pubmed
    Small subunit rRNA sequences have been determined for representative strains of six species of the family Rickettsiaceae: Rickettsia rickettsii, Rickettsia prowazekii, Rickettsia typhi, Coxiella burnetii, Ehrlichia risticii, and Wolbachia ..
  57. Kelly P, Fournier P, Parola P, Raoult D. A survey for spotted fever group rickettsiae and ehrlichiae in Amblyomma variegatum from St. Kitts and Nevis. Am J Trop Med Hyg. 2003;69:58-9 pubmed
    ..All PCR amplification products obtained had 100% sequence homology with Rickettsia africae, the agent of African tick-bite fever...
  58. González R, Lohrmann K, Pizarro J, Brokordt K. Differential susceptibility to the Withering Syndrome agent and renal coccidia in juvenile Haliotis rufescens, Haliotis discus hannai and the interspecific hybrid. J Invertebr Pathol. 2014;116:13-7 pubmed publisher
    ..Development of a culture based on this hybrid abalone should consider its susceptibility to infection by coccidian, WS-RLOs and the potential for developing the WS disease. ..
  59. Kelly P, Mason P, Rhode C, Dziva F, Matthewman L. Transient infections of goats with a novel spotted fever group rickettsia from Zimbabwe. Res Vet Sci. 1991;51:268-71 pubmed
    ..Rickettsaemia was detected only on day 3 after exposure to infected ticks. Immunosuppression failed to induce recrudescence of the rickettsaemia...
  60. Dawson J, Abeygunawardena I, Holland C, Buese M, Ristic M. Susceptibility of cats to infection with Ehrlichia risticii, causative agent of equine monocytic ehrlichiosis. Am J Vet Res. 1988;49:2096-100 pubmed
    ..Ehrlichia risticii was isolated from the blood of this pony on PID 7, 9, 11, and 16...
  61. Camus E, Barre N. Diagnosis of heartwater in the live animal: experiences with goats in Guadeloupe. Onderstepoort J Vet Res. 1987;54:291-4 pubmed
    ..Ticks that have engorged on a suspect animal can be allowed to moult and then fed on a susceptible animal to test their infectivity. These methods are time consuming but useful for heartwater surveys...
  62. Prozesky L. Diagnosis of heartwater at post-mortem in ruminants and the confirmation of Cowdria ruminantium in mice. Onderstepoort J Vet Res. 1987;54:301-3 pubmed
    ..The effect of specific chemotherapy on the morphology of heartwater organisms in vivo is outlined. A severe nephrosis in heartwater-infected Angora goats, treated after the first day of the febrile reaction, is described...
  63. Bigalke R. Future prospects and goal setting regarding research on heartwater. Onderstepoort J Vet Res. 1987;54:543-6 pubmed
    ..The development of a tissue culture vaccine offers the greatest chance of immediate success and should be actively pursued. Studies on a recombinant vaccine should, however, be initiated because of the potential long term advantages...
  64. Barrera L, Trujillo M, Goodfellow M, Garcia F, Hernandez Lucas I, Davila G, et al. Biodiversity of bradyrhizobia nodulating Lupinus spp. Int J Syst Bacteriol. 1997;47:1086-91 pubmed
    ..japonicum type strain, although not all B. japonicum type strains (subcultures maintained in different bacterial collections) had identical small-subunit rRNA...
  65. Poinsot D, Bourtzis K, Markakis G, Savakis C, Mercot H. Wolbachia transfer from Drosophila melanogaster into D. simulans: Host effect and cytoplasmic incompatibility relationships. Genetics. 1998;150:227-37 pubmed
    ..It would also confirm other results indicating that the factor responsible for CI induction in males is distinct from the factor responsible for CI rescue in females...
  66. Olano J. Rickettsial infections. Ann N Y Acad Sci. 2005;1063:187-96 pubmed
    ..Our knowledge on rickettsial pathogenesis will continue to expand in the near future as new research tools become available...
  67. Fryer J, Lannan C, Giovannoni S, Wood N. Piscirickettsia salmonis gen. nov., sp. nov., the causative agent of an epizootic disease in salmonid fishes. Int J Syst Bacteriol. 1992;42:120-6 pubmed
    ..A new genus and species (Piscirickettsia salmonis gen. nov., sp. nov.) are proposed for this organism, with ATCC(R) VR 1361 as the type strain...
  68. Montchamp Moreau C, Ferveur J, Jacques M. Geographic distribution and inheritance of three cytoplasmic incompatibility types in Drosophila simulans. Genetics. 1991;129:399-407 pubmed
    ..Both W and R types were found among mainland and island populations harboring the worldwide mitochondrial type SiII. Type S incompatibility could be involved in the reinforcement of the geographical isolation of SiI populations...
  69. Relman D, Loutit J, Schmidt T, Falkow S, Tompkins L. The agent of bacillary angiomatosis. An approach to the identification of uncultured pathogens. N Engl J Med. 1990;323:1573-80 pubmed
    ..The agent is often visualized in tissue sections of lesions with Warthin-Starry staining, but the bacillus has not been successfully cultured or identified. This bacillus may also cause cat scratch disease...
  70. Norval R, Andrew H, Yunker C. Infection rates with Cowdria ruminantium of nymphs and adults of the bont tick Amblyomma hebraeum collected in the field in Zimbabwe. Vet Parasitol. 1990;36:277-83 pubmed
    ..Depending on the date of collection and locality, these rates were in the range 0.0-44.9% for males, 20.0-36.1% for females and 0.0-13.4% for nymphs. Most of these rates are considerably higher than those previously believed to occur...
  71. Endris R, Haslett T, Birnie E, Hess W. A mouse lethal dose assay for detection and titration of Cowdria ruminantium (Kwanyanga strain) in goats and ticks. Vet Microbiol. 1989;19:151-65 pubmed
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    ..Some new results on the relation between this agent and its hosts are presented in this paper...
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    ..quintana. The characteristic 414-bp fragment was not amplified from eight lymph node tissue samples from non-CSD cases. These results provide evidence that R. henselae, and not R. quintana, plays the central role in the etiology of CSD...
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    ..However, most of the termite symbionts were found to be distinct from known methanogens. They are not dispersed among diverse methanogen species, but rather formed unique lineages in the phylogenetic trees...
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    ..Against challenge with the Welgevonden stock, however, immunization with each of the 3 combinations and with single stocks effected a protective immunity...
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    ..Therefore, we propose that each species should be subdivided into two biovars, as follows: R. gallicum biovar gallicum and R. gallicum biovar phaseoli; and R. giardinii biovar giardinii and R. giardinii biovar phaseoli...
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    ..As such, this gene will be a very useful tool for Wolbachia strain typing and phylogenetic analysis, as well as understanding the molecular basis of the interaction of Wolbachia with its host...
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    ..In contrast, we were unable to cross-infect Armadillidium vulgare with the feminizing microsporidian from G. duebeni or to cross-infect G. duebeni with the feminizing bacterium Wolbachia sp. from A. vulgare...
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    ..16S rRNA and 51-kDa antigen gene sequences from blood, isolates, and caddis flies fed to the horses were identical, proving oral transmission of N. risticii from caddis flies to horses...
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    ..More research is also needed on the immunology and diagnosis of the disease and the factors involved in the resistance of young animals...
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    ..Our findings suggest that the intraperitoneal route of inoculation of BALB/c mice can be used for the differentiation of spotted fever group rickettsiae...
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    ..We would like to remind orthopaedic surgeons to consider this diagnosis in evaluating masses of the soft tissues of the extremities...