Results 41 to 50 of about 1,725 (169)
Revista da Sociedade Brasileira de Medicina Tropical, 2009 Foi pesquisada a presença de riquétsias em 3.545 carrapatos Amblyomma cajennense e 2.666 Amblyomma dubitatum. Através do teste de hemolinfa, reação em cadeia pela polimerase e isolamento de rickettsia em cultivo celular, todos os Amblyomma cajennense ...
Richard Campos Pacheco +10 more
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Genotypic identification of an undescribed spotted fever group rickettsia in ixodes ricinus from southwestern Spain [PDF]
, 1998 An undescribed rickettsia was directly analyzed with specific rickettsial molecular biology tools on Ixodes ricinus L. collected in different localities of the province of Cadiz (southwestern Spain).
Borobio, M. V. +5 more
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Microbial Ecology, 2007 The tick species, Amblyomma neumanni (Acari: Ixodidae) is the most frequent tick parasitizing humans in northwestern Argentina. The present study evaluated the rickettsial infection among 55 A. neumanni adult free-living ticks collected in Dean Funes, Córdoba Province.
Labruna, Marcelo B. +5 more
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Ticks and Tick-borne Diseases, 2014 The purpose of this study was to provide molecular evidence of Rickettsia spp. in ticks collected from 2 sites of Cordoba. From May to June 2009, 1069 Amblyomma cajennense ticks were removed from 40 capybaras (Hydrochoerus hydrochaeris) in a rural locality of Monteria. Furthermore, 458 Amblyomma sp. larvae and 20 Amblyomma sp.
Jorge, Miranda, Salim, Mattar
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Epidemiological surveillance of capybaras and ticks on warning area for Brazilian spotted fever [PDF]
Veterinary World, 2015 Aim: The vulnerability of tropical developing countries to the emerging disease constitutes a critical phenomenon in which the invasion of wild niches by human hosts, contributes to expansion of zoonotic diseases, such as the Brazilian spotted fever (BSF)
José Brites-Neto +2 more
doaj +1 more source
Rickettsia Bellii and Anaplasma Marginale
, 2023 Anaplasma marginale is an obligate intracellular gram-negative bacterial pathogen of ruminants. It is the etymological agent of bovine anaplasmosis, which is the most prevalent tick-borne cattle disease in the word. Despite its prevalence and severe economic impacts, few effective control measures exist for A. marginale. Antibiotic treatment, acaricide
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Development of shuttle vectors for transformation of diverse Rickettsia species. [PDF]
PLoS ONE, 2011 Plasmids have been identified in most species of Rickettsia examined, with some species maintaining multiple different plasmids. Three distinct plasmids were demonstrated in Rickettsia amblyommii AaR/SC by Southern analysis using plasmid specific probes.
Nicole Y Burkhardt +7 more
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1, a previously undescribed paralog from autotransporter protein-encoding genes in species [PDF]
, 2006 Background Among the 17 genes encoding autotransporter proteins of the "surface cell antigen" (sca) family in the currently sequenced Rickettsia genomes, ompA, sca5 (ompB) and sca4 (gene D), have been extensively used for identification and phylogenetic ...
Raoult Didier +3 more
core +1 more source
Ticks and Tick-borne Diseases, 2014 Amblyomma dubitatum engorged females, naturally infected by Rickettsia bellii, were used to establish a laboratory colony. Larvae, nymphs, and adults were exposed to two strains of Rickettsia rickettsii by feeding on needle-inoculated guinea pigs, and thereafter reared on uninfected guinea pigs.
Renata K, Sakai +7 more
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Frontiers in Microbiology, 2022 Arthropods have a broad and expanding worldwide presence and can transmit a variety of viral, bacterial, and parasite pathogens. A number of Rickettsia and Orientia species associated with ticks, fleas, lice, and mites have been detected in, or isolated ...
Adam R. Pollio +12 more
doaj +1 more source