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Showing 1 to 20 of 30 for “"Spirochetes"”.
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Cyclic-di-GMP Signaling in the Borrelia Spirochetes
… in the cells lacking PdeA. Additionally, spirochetes were shown to chemotax towards N-acetyl-glucosamine (NAG) and they did not form soft agar swarms. In contrast, cells lacking Rrp1 did not accumulate detectable levels of c-di-GMP, demonstrated a reduced ability to chemotax towards NAG, …
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The Biology and Ultrastructure of Select Intestinal Spirochetes
Made available in DSpace on 2014-12-14T13:28:21Z (GMT). No. of bitstreams: 1 8009198.pdf: 5372779 bytes, checksum: 84072a969195ad9a9c55b38aeb955e5d (MD5) Previous issue date: 1979
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The Characterization of Several Intestinal Spirochetes of Animal Origin
… it along with several other intestinal spirochetes from a pig, dog, mouse, opossum, and gibbon on the basis of structural and selected biochemical characters, (2) to evaluate these properties using numerical taxonomy in order to provide more information for the classification of such …
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Studies of Susceptibility of Broad-Headed Skinks (<em>Eumeces laticeps</em>) and Laboratory Mice (<em>Mus musculus</em>) to Strain MI-2 of <em>Borrelia burgdorferi</em> and Vector Competence of the Tick <em>Ixodes scapularis</em>
… to infect broad-headed skinks with MI-2 strain spirochetes were unsuccessful. Spirochetes could not be isolated from various tissues of seven lizards at least 30 days after they had been inoculated with 107 spirochetes. Also, none of the xenodiagnostic tick larvae (n = 70) acquired spirochetes …
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Studies of the Falls Creek (Texas) strain of relapsing fever spirochetes: Part I. Epidemiological and ecological studies. Part II. Serological studies of the "ticktorium" strain of Borrelia recurrentis var turicatae
… between first attack and first relapse spirochetes. There is evidence, however, that relapse passage, using small amounts (less than 0.01 cc) of blood, may result in the development of certain antigenic strains which were involved in the first attack of the animal from which the passage …
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Lyme disease in Indiana : isolation of Borrelia burgdorferi-like organisms from Dermacentor variabilis
… cultured in BSK II medium for 7 to 21 days. Spirochetes were isolated in the BSK II medium from pools of midgut diverticula from 6 D. variabilis from Martin County and pools of midgut diverticula from 7 D. variabilis from Lawrence County. Spirochetes from Martin County differed …
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Physiological Factors Affecting the Bactericidal Activity of the Western Fence Lizard (Sceloporus occidentalis) for the Lyme Disease Spirochete, Borrelia burgdorferi
… reservoir incompetent and capable of eliminating spirochetes from infected ticks, it has been implicated as a major factor in the ecology of Lyme disease in the West. Although complement proteins in lizard blood have been established as the borreliacidal factor, no studies have examined …
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A Molecular Genetic Investigation of the Regulation of Outer Surface Protein C in Borrelia Burgdorferi: Identification and Characterization of the Novel Regulatory Protein BBD18
… to cause infection in mammals, B. burgdorferi spirochetes within a feeding tick sense environmental changes and subsequently alter their gene expression and protein profiles. As part of this adaptation, spirochetes within the tick midgut downregulate outer surface protein (Osp) A and upregulate …
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A Molecular Genetic Investigation of the Regulation of Outer Surface Protein C in Borrelia Burgdorferi: Identification and Characterization of the Novel Regulatory Protein BBD18
… to cause infection in mammals, B. burgdorferi spirochetes within a feeding tick sense environmental changes and subsequently alter their gene expression and protein profiles. As part of this adaptation, spirochetes within the tick midgut downregulate outer surface protein (Osp) A and upregulate …
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Surface Localization Determinants of Borrelia burgdorferi Lipoproteins
Borrelia spirochetes are the causative agents of Lyme disease and relapsing fever, two common vector-borne diseases. Early experimental evidence, gained from development of genetic tools in the Lyme disease spirochete, Borrelia burgdorferi, emphasized the importance of outer surface lipo-proteins …
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Characterization of cyclic-di-GMP signaling with the Lyme spirochete, Borrelia burgdorferi
… burgdorferi, B. garinii, and B. afzelii. These spirochetes experience environmental fluctuations as they are passed between mammalian and Ixodes tick hosts throughout their enzootic cycle. Recent studies have suggested cyclic diguanylate (c-di-GMP), a ubiquitous secondary messenger, is a key …
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THE ECOLOGY OF TICK-BORNE RELAPSING FEVER IN WESTERN NORTH AMERICA
… small mammals with antibodies to relapsing fever spirochetes, while pine squirrels (<i>Tamiasciurus hudsonicus</i>) and deer mice (<i>Peromyscus maniculatus</i>) had active infections. Interactions for the enzootic maintenance of <i>B. hermsii</i> include vectors and host(s). These interactions …
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THE ECOLOGY OF TICK-BORNE RELAPSING FEVER IN WESTERN NORTH AMERICA
… small mammals with antibodies to relapsing fever spirochetes, while pine squirrels (<i>Tamiasciurus hudsonicus</i>) and deer mice (<i>Peromyscus maniculatus</i>) had active infections. Interactions for the enzootic maintenance of <i>B. hermsii</i> include vectors and host(s). These interactions …
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Characterization of cyclic di-GMP binding by the sole Borrelia burgdorferi and Borrelia hermsii PilZ domain-containing proteins
… disease and relapsing fever, respectively. These spirochetes are maintained in an enzootic cycle, involving tick vectors and mammalian hosts. Differential gene expression is central in their survival in various environmental conditions. C-di-GMP has been demonstrated to be important in bacterial …
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Immunological and Molecular Analyses of the Borrelia burgdorferi OspF Protein Family F
… impacts on the pathogenicity of the Lyme disease spirochetes.
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Βακτηριακή αποίκηση σε ασθενείς με περιοδοντίτιδα ενηλίκων: μορφολογική μελέτη
… (P<0.01) WAS FOUND BETWEEN SMALL AND MEDIUM SPIROCHETES. STATISTICALLY SIGNIFICANT CORRELATIONS (P<0.1) WERE ALSO REVEALED BETWEEN FUSIFORMS AND SHORT RODS AS WELL AS BETWEEN FILAMENTS AND SHORT RODS.
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Analysis of plasminogen binding to Treponema denticola, a key periopathogen
… a larger number of Gram-negative anaerobes and spirochetes. An increase in the oral spirochete, Treponema denticola, is highly correlated with periodontal disease progression and severity. The ability of this periopathogen to thrive in the subgingival crevice is dependent on complement evasion …
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Identification of bptA (bbe16) as an Essential Gene for the Persistence of the Lyme Disease Spirochete, Borrelia Burgdorferi, in its Natural Tick Vector
… BptA may be widely utilized by Lyme borreliosis spirochetes for persistence in nature. Given B. burgdorferi's absolute dependence on and intimate association with both its arthropod and mammalian hosts, this study has provided evidence that bptA is a virulence factor critical for B. burgdorferi's …
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Next-Generation Sequencing of vlsE Recombinational Switching in the Lyme Spirochete
Borrelia burgdorferi and other spirochetes that cause Lyme disease effectively evade the acquired immune response through antigenic variation. The VlsE antigen is expressed on the spirochete surface during mammalian infection. Virtually unlimited numbers of variants are generated through segmental …
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Effect of Site-specific Changes in the Regulatory Functions of BosR
… as a measure of the physiological status of the spirochetes. A set of key defined site-specific mutants in B. burgdorferi has been generated and these strains will help in further analysis of the interactions of BosR with the members of its regulon. Moreover, the regulatory functions of BosR are …
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