spirochaetales

..These studies conclusively demonstrate the importance of OspC in the invasion of tick salivary glands by B. burgdorferi, a critical step in the transmission of spirochetes from the arthropod vector to the mammalian host...

..These data delineate a role for differentially produced B. burgdorferi antigens in spirochete colonization of mouse joints, and suggest new strategies for the treatment of Lyme arthritis...

..Motility is likely to play a major role in the disease process. This review summarizes the progress in the genetics of motility and chemotaxis of spirochetes, and points to new directions for future experimentation...

..The literature reports patients who improve symptomatically without specific treatment. Treatment may be given to patients with severe symptoms...

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..2% corresponding to that of the B. aalborgi type strain. Our results encourage further investigations for the development of a suitable selective agar medium for the isolating and cultivating B. aalborgi from human specimens...

..These findings confirm that B. pilosicoli strains can infect across species barriers and cause chronic mild diarrhoea in intact adult chickens...

..The feces also underwent anaerobic culture and species-specific PCRs. Fecal extraction-D-PCR detected seven additional samples containing B. hyodysenteriae and five more containing B. pilosicoli...

..After treatment by penicillin, the facial and labial swelling of the 11 cases of CG and MRS were abated. CONCLUSION: CG and MRS probably are infectious diseases caused by spirochetes...

..Homosexual and HIV-positive men are more likely to be symptomatic irrespective of invasion. Rare cases of spirochetemia and multiple organ failure have been reported in critically ill patients...

..To the author's knowledge, this is the first report of B. pilosicoli in the ceca of turkeys...

..001). Dietary ZnB at 50 parts/10(6) therefore predisposed to colonization by B. pilosicoli. Despite colonization, no significant production differences were found between the birds in the three groups...

..0% in South Norway, and in both regions there was a considerable male predominance of HIS (70% and 75%, respectively). Furthermore, HIS was more often diagnosed by the pathologists in South Norway (25%) than in mid-Norway (6.5%)...

..In the rectum, chronic inflammation with numerous spirochetes was also noted. These results indicated that the occurrence of the gastrointestinal tumors might be associated with the bacterial infection described above...

..SIGNIFICANCE AND IMPACT OF THE STUDY: The availability of a new diagnostic M-PCR will allow rapid detection and control of three key porcine enteric pathogens...

..It was not established how the ZnB at 50 ppm and the dietary enzyme reduced the ability of the spirochaete to colonise, but it may have been by bringing about changes in the intestinal microflora and/or the intestinal microenvironment...

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..This is the first report on the isolation of B. alvinipulli from laying geese affected with fibrinonecrotic typhlocolitis...

..These invasive intestinal spirochetes might be one of pathogens inducing colitis and diarrhea in horses...

..In four there was partial improvement and in one child no change in bowel-related symptoms. We believe that intestinal spirochetes may cause colorectal disease in children. Possible pathogenic mechanisms are discussed...

..The other 20 infected birds had a significant drop in egg production, but those receiving ZnB showed a reduced colonization by B. intermedia after 3 weeks...

..While treatment information remains limited, treatment can lead to resolution of symptoms in some cases...

..pilosicoli. These data suggest that some resistance to common antimicrobials exists among intestinal spirochetes obtained from laying hens and supports the need of MIC data for clinical isolates before any treatment is considered...

..2 to 0.3 microm in diameter, 4 periplasmic flagella at each end were observed dominantly. The isolates were hippurate positive but indole negative. This is the first report on the isolation of B. pilosicoli from pigs in Japan...

..It was not established how wheat enhances colonization by B. intermedia, but the results suggest that wheat-based diets should be avoided in flocks infected with B. intermedia...

..To investigate the microbiological changes of subgingival microbials in patients with gingivitis and wearing fixed orthodontic appliances...

..Identification of PBPs of B. pilosicoli provides a basis for characterization of the genes encoding these proteins among pathogenic intestinal spirochetes of humans and animals...

..To review the aetiologies and preventative methods associated with Jarisch-Herxheimer reactions (JHR)...

..This protocol represents a significant improvement over conventional methods currently used in veterinary diagnostic laboratories for rapid specific identification of Brachyspira spp. isolated from both pigs and poultry...

..These results show that the epidemiology of intestinal spirochaetal infections in broiler breeder and laying hen flocks can vary considerably between farms, although the reasons for these differences were not established...

..The incidence of disease for the three His6-BmpB vaccinated groups was significantly less (P = 0.047) than for the control groups, with a approximately 50% reduction. BmpB appears to have potential as an SD vaccine component...

..05), while in 2002 the average MIC significantly decreased when compared to the value in 2000 (P < 0.05). However, strains with MIC values for tiamulin as high as 8 microg/ml (broth dilution) could still be isolated...

..These observations point at the possibility that under certain conditions even Brachyspira species of low pathogenicity can multiplicate extensively and lead to Brachyspira-associated enterocolitis...

..05). The fermented liquid feed and the diet containing lactic acid had no significant effect on the excretion of B pilosicoli or on the numbers of pigs showing clinical signs of disease...

..In conclusion, this multiplex PCR is a feasible alternative to standard diagnostic methods for detection of L. intracellularis, B. hyodysenteriae and Salmonella spp. from swine intestinal specimens...

..The 16SrDNA sequencing results demonstrated that the canine isolates were B. pilosicoli and the base alignments registered in DDBJ. This is the first report concerning the isolation of B. pilosicoli from dogs in Japan...

..In conclusion, B. pilosicoli can be either hippurate positive or negative and, thus, the scheme for biochemical differentiation of porcine Brachyspira should be revised to include identification of hippurate-negative B. pilosicoli...

..hyodysenteriae infection. Vaccine efficacy was monitored by caecal pathology and quantification of B. hyodysenteriae numbers in the caeca of infected mice by real-time PCR...

..intermedia than the flock of intermediate age (P = 0.004), suggesting that following initial infection of individual young hens on this farm there was amplification and transmission of infection amongst members of the flock...

..Since poor data were available on the prevalence of this infection, the aim of our study was to describe the occurrence of this infection in our area in the period 2002-2005...

..B. hyodysenteriae and B. pilosicoli) as well as an epidemiological tool for characterizing spirochetes isolated from swine...

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..B. pilosicoli was detected in 5 samples collected from another farm. Lower concentrations of iso-butyrate and iso-valerate were likely associated with development of pathogenic spirochete infection...

..hyodysenteriae reserving 16S RFLP-PCR for all other pathogenic and non-pathogenic Brachyspira species. Among the species-specific PCR assays tested only that for B. pilosicoli was useful in our hands...

..In these cases the percentage of spirochetes in the exudates of the lesions was used as an aid to diagnosis with successful treatment results...

..Our study reports the detection and identification of intestinal spirochetosis in patients with colonic diseases in a tertiary-care hospital over a 12-year period, and includes a description of all cases we diagnosed...

..The study showed that diets supplemented with highly fermentable carbohydrates from dried chicory roots and sweet lupins can protect pigs against developing swine dysentery, but do not have any significant influence on T. suis...

..In grower-finisher units, slatted flooring is associated with a higher risk, while B. hyo negativity of the breeding units, the fibre content of the diet, and outdoor production are associated with lower risk of swine dysentery...

..This study demonstrates that B. aalborgi is much more commonly involved in histologically identified IS in Australian patients than is B. pilosicoli. This is the first report of amplification of B. pilosicoli DNA from humans with IS...

..The application of this new technique should improve diagnostic capacity, and facilitate further studies on AIS...

..It is recommended to use special transport media for the transport of the specimen...

..These new faecal PCR protocols should be valuable for future studies on the epidemiology of intestinal spirochaete infections in human populations, particularly as it is not currently possible to isolate B. aalborgi from faeces...

..Because songbirds disperse millions of infected ticks across Canada, people and domestic animals contract Lyme disease outside of the known and expected range...

..However, unless the transmission of borreliae to a given host is demonstrated, a final statement on the vector competence of trombiculid mites is not possible...

..In conclusion, our in silico data do not directly demonstrate that Borrelia and Yersinia proteins trigger AITD but suggest that a restricted number of them might have the potential to, at least in persons with certain HLA-DR alleles...

..05). In conclusion, this study shows that diets supplemented with highly fermentable carbohydrates from inulin protected pigs against developing swine dysentery...

..burgdorferi s.s. in certain types of woodlands. The findings with respect to A. phagocytophilum, although of less certain significance, suggest that S. griseus could serve as a secondary host of this rickettsia...

..Although neither centrin nor calmodulin were detected, a 30 kDa tektin-like protein apparently is present in these spirochetes...

..The division of the spirochetes into six major phylogenetic clusters was defined also by sequence signature elements. These signature analyses supported the conclusion that the spirochetes represent a monophylectic bacterial phylum...

..Additionally we report the identification and characterization of the polypeptide responsible for cross-reactivity with antitubulin antiserum...

..Additionally we report the identification and characterization of the polypeptide responsible for cross-reactivity with antitubulin antiserum...

..Destruction of spirochetes in ticks that fed on the hamsters vaccinated with the 297 bacterin suggests that antibodies to OspA and OspB may have been responsible, since the mutant did not induce this activity...

..hyodysenteriae strains. The results of these studies suggest that certain antibiotics may induce the production of prophage or prophage-like elements by intestinal bacteria and thereby impact intestinal microbial ecology...

..burgdorferi by host cells and the ability of T. pallidum to avoid detection and uptake by virtue of its denuded outer membrane rather than by differences in surface lipoprotein expression...

..The results suggest a different kind of permeation barrier that is built up by this particular OML of T. denticola, which is quite different from LPS normally essential for Gram-negative bacteria...

..We conclude that brush rabbits and several species of rodents besides woodrats may contribute to the maintenance of B. burgdorferi because they harbour the spirochete and are fed upon by competent enzootic vectors...

..These three cases supported the presence of Lyme disease in Turkey and indicated that the disease could present itself in various clinical pictures...

..ricinus vector seems to be very low. The research provides additional information on the complexity of B. burgdorferi s.l. ecology in Europe, pointing to the importance of the local host community...

..Leptospirosis should be suspected in febrile patients with jaundice and renal failure when pathogens cannot be identified by traditional culture for microorganisms...

..The authors determined whether the current immunosuppressive agents could alleviate the inflammation and minimize the organ injury in hamster model...

..Therefore, the temporal synthesis of OspC by spirochetes only in feeding ticks that were infected prior to the blood meal suggests that this surface protein is involved in transmission from tick to mammal but not from mammal to tick...

..Parataxis tells us that what appears to be cause and effect in the couplet "amyloid plaque" merely by a proximity relationship may be "spurious causality" which is a cognitive dead end...

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..These results indicate that these antigens are not favorable candidate reagents to be used in the diagnosis of Lyme disease...

..This strain represents the first spirochete engineered to contain specifically defined mutations in more than one genetic locus...

..denticola cells, but not strain CKE (CTLP(-)) cells, were extended. These results suggest that interactions of T. denticola with fibrinogen, which may promote colonization and modulate hemostasis, are mediated principally by CTLP...

..These results provide evidence that NADH oxidase serves to protect B. hyodysenteriae cells against oxygen toxicity and that the enzyme, in that role, contributes to the pathogenic ability of the spirochete...

..Moreover, our findings of B. burgdorferi in I. scapularis reveal that people and domestic animals may be exposed to Lyme disease vector ticks, which have wide-ranging distribution in eastern and central Canada...

..In neurologic complications, the effective treatment is intravenous penicillin G or ceftriaxone. West African tick-borne relapsing fever must be systematically mentioned in case of fever in a patient returning from the endemic area...

..The lack of concordance between different detection or isolation methods suggests that reliance upon a single technique may grossly underestimate the true prevalence of spirochetal infection in wild-caught O. coriaceus ticks...

..burgdorferi. This complete pathway for purine salvage in the relapsing fever spirochetes may contribute, in part, to these spirochetes achieving high cell densities in blood...

..At the same time, however, these findings also raise important issues regarding the use of OM preparations for identifying rare OM proteins of T. pallidum...

..burgdorferi-infected ticks and increased risk of Lyme disease exposure...

..burgdorferi play a different role than has been described for E. coli...

..The observed low values of the prevalence and infection intensity of female mosquitoes Aedes spp. compared to ticks suggest that the former do not pose a serious epidemiological threat in the spreading of Lyme disease...

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..These observations establish a basis for future studies to determine the minimum number of spirochetes required in the host's blood to allow O. hermsi to become persistently infected and transmit during subsequent bloodmeals...

..L gen. n. corvi, of a crow)...

..This difference between the lysyl-tRNA synthetases of spirochetes and their hosts may be readily exploitable for the development of anti-spirochete therapeutics...

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..These findings add additional evidence that I. affinis and I. minor are potentially significant maintenance vectors of the spirochete...

..It should be possible to adapt these procedures to study other spirochete species, as well as other species of bacteria, especially those that have long generation times...

..These studies lend further support to the hypothesis that Msp mediates the extracellular matrix binding activity of T. denticola...

..These results are consistent with the hypotheses that the species of proteoglycans recognized by B. burgdorferi vary with cell type and that bacterial recognition of different proteoglycans is mediated by the same bacterial molecule(s)...

..If, as we hypothesized, neuronal apoptosis is the key pathogenic event in Lyme neuroborreliosis, then targeting microglial responses may be a significant therapeutic approach for the treatment of this form of Lyme disease...

..Finally, 3 kinds of archival museum specimens (ticks, woodrat skins, Native American skeletal remains) will be assayed for Bb-nucleic acid with the polymerase chain reaction to determine the antiquity of LD in this region...

..The information gained from the project will lead to policy recommendations, which are needed to address leptospirosis in regions of the world where slum settlements are rapidly expanding. ..

..Understanding these interactions will improve our understanding of how ?? T cell regulate the immune response during infection and autoimmune conditions. ..

..Understanding these interactions will improve our understanding of how ?? T cell regulate the immune response during infection and autoimmune conditions. ..

..g. vaccines) or treat (e.g. antimicrobial therapeutics) Lyme disease. ..

..The effects of exposure to direct sunlight or of spirochetal infection on questing by immature ticks also will be determined...

..And anti-complement activity in saliva of human-biting vector ticks (2 spp.) As determinants of reservoir-host competence or vector competence for Bb sl or relapsing fever group spirochetes present in the western USA. ..

..This project will be of importance to the medical community as well as the dental community...

..These investigations, they propose, should provide a vigorous test of their working hypothesis, and will lead to new insights into the mechanism of treatment-resistant chronic Lyme arthritis. ..

..burgdorferi and lipoprotein in inflammation and neurodegeneration, specifically, the expression and involvement of pertinent TLR in mediating cytokine production and apoptosis in the different cell combinations. ..

..The results of all studies will provide critical information on the pathogenesis of Lyme disease and could provide the foundation for novel approaches to prevent Lyme disease including Lyme associated arthritis. ..

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..burgdorferi. The elucidation of the steps that explain the enhancement may allow for more intensive basic and clinical investigation into mechanisms of virulence for Lyme disease, HGE, and coinfections. ..

..Tight regulation of gene expression is crucial for the pathogenic strategy of B. burgdorferi. The goal of the proposed study is to understand how B. burgdorferi regulates gene expression to meet its pathogenic strategy. ..

..Tight regulation of gene expression is crucial for the pathogenic strategy of B. burgdorferi. The goal of the proposed study is to understand how B. burgdorferi regulates gene expression to meet its pathogenic strategy. ..

..Achieving this proposal's goal will explain how inflammation is regulated, and help understand the basis of susceptibility and resistance to Lyme disease. ..

..The goal of this Phase I SBIR proposal is to test a bait vaccine against B. burgdorferi via ad libidum feeding of the major host reservoir of this spirochete, the white-footed mouse. ..

..Identification of the genes that regulate disease severity will provide insight into the mechanism of arthritis development and may be extended to other inflammatory pathologies. ..

..These experiments are designed to elucidate the mechanism of treatment resistant Lyme arthritis. ..

..Understanding the relationship of motility and cell structure to spirochete pathogenesis will result in development of therapeutics targeted towards inhibition of spirochete motility for prevention of human disease. ..

..Characterization of these molecules will provide insights into the pathogenic mechanisms of this bacterium, and may provide novel strategies for therapeutic intervention. ..

..Development of this risk model, which culminates over 2 decades of intensive study, should contribute significantly to our knowledge of the landscape ecology and epidemiology of LD in this region. ..

..These studies will test whether certain genes, called tpr genes, can be used to tell one infection from another and whether the immune response to these bacteria can protect against infection. ..

..These studies will test whether certain genes, called tpr genes, can be used to tell one infection from another and whether the immune response to these bacteria can protect against infection. ..

..These studies will test whether certain genes, called tpr genes, can be used to tell one infection from another and whether the immune response to these bacteria can protect against infection. ..

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..This will provide new insights into the natural history of B. burgdorferi infection in nature which, in turn, may have implications for prevention and treatment of human Lyme disease. ..

..Identification of the genes that regulate disease severity will provide insight into the mechanism of arthritis development and may be extended to other inflammatory pathologies. ..