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Diane G Edmondson, Sabitha Prabhakaran, Steven J Norris, Amy J Ullmann, Joe Piesman, Marc Dolan, Christian Probst, Christiane Radzimski, Winfried Stöcker, Lars Komorowski
Lyme borreliosis is caused by tick-transmitted spirochetes of the Borrelia burgdorferi sensu lato group and is the most common vector-borne disease in the United States and Europe. Outer surface protein C (OspC) is a 23 kDa outer surface lipoprotein expressed during spirochete transmission from the tick to the vertebrate host. In a previous study, we found that immunization with a recombinant disulfide-bridged dimeric form of OspC (D-OspC) stimulates increased antibody responses relative to immunization with commonly employed monomeric OspC...
October 12, 2016: Clinical and Vaccine Immunology: CVI
Mariam Meddeb, Wassila Carpentier, Nicolas Cagnard, Sophie Nadaud, Antoine Grillon, Cathy Barthel, Sylvie Josiane De Martino, Benoît Jaulhac, Nathalie Boulanger, Frédéric Schramm
In Lyme borreliosis, the skin is the key site for bacterial inoculation by the infected tick and for cutaneous manifestations. We previously showed that different strains of Borrelia burgdorferi sensu stricto isolated from tick and from different clinical stages of the Lyme borreliosis (erythema migrans, and acrodermatitis chronica atrophicans) elicited a very similar transcriptional response in normal human dermal fibroblasts. In this study, using whole transcriptome microarray chips, we aimed to compare the transcriptional response of normal human dermal fibroblasts stimulated by 3 Borrelia burgdorferi sensu lato strains belonging to 3 main pathogenic species (B...
2016: PloS One
Setareh Jahfari, Agnetha Hofhuis, Manoj Fonville, Joke van der Giessen, Wilfrid van Pelt, Hein Sprong
BACKGROUND: Tick-borne diseases are the most prevalent vector-borne diseases in Europe. Knowledge on the incidence and clinical presentation of other tick-borne diseases than Lyme borreliosis and tick-borne encephalitis is minimal, despite the high human exposure to these pathogens through tick bites. Using molecular detection techniques, the frequency of tick-borne infections after exposure through tick bites was estimated. METHODS: Ticks, blood samples and questionnaires on health status were collected from patients that visited their general practitioner with a tick bite or erythema migrans in 2007 and 2008...
October 2016: PLoS Neglected Tropical Diseases
Lauren M K Mason, Alex Wagemakers, Cornelis van 't Veer, Anneke Oei, Wouter J van der Pot, Kalam Ahmed, Tom van der Poll, Teunis B H Geijtenbeek, Joppe W R Hovius
Borrelia burgdorferi is transmitted into the skin of the host where it encounters and interacts with two dendritic cell (DC) subsets; Langerhans cells (LCs) and dermal DCs (DDCs). These cells recognize pathogens via pattern recognition receptors, mature and migrate out of the skin into draining lymph nodes, where they orchestrate adaptive immune responses. In order to investigate the response of skin DCs during the early immunopathogenesis of Lyme borreliosis, we injected B. burgdorferi intradermally into full-thickness human skin and studied the migration of DCs out of the skin, the activation profile and phenotype of migrated cells...
2016: PloS One
Deborah A Grosenbaugh, Daniel R Rissi, Paula M Krimer
Lyme disease in dogs can be effectively prevented by vaccination against antigens expressed by the spirochete Borrelia burgdorferi during transmission by the tick vector Ixodes sp. Lyme vaccine efficacy has traditionally been based on indicators of infection following wild-caught tick challenge whereas most other types of vaccine are required to demonstrate protection from clinical signs of disease. In this vaccination-challenge study we sought to demonstrate the ability of a nonadjuvanted, outer surface protein A (OspA) vaccine to protect from infection and to prevent synovial lesions consistent with Borreliosis...
November 1, 2016: Veterinary Immunology and Immunopathology
Helena Nejezchlebova, Dorota Kiewra, Alena Žákovská, Petra Ovesná
INTRODUCTION AND OBJECTIVES: The ever-increasing number of patients with tick-borne diseases resulted in the presented study investigating the awareness, attitudes and knowledge among students about the threats arising from tick bites and preventive anti-tick practices. MATERIALS AND METHOD: Questionnaires concerning these issues were distributed amongst Czech and Polish university students of science. Responses were analyzed by nationality and by gender. RESULTS: Nearly all respondents were aware of the risks arising from ticks and could name at least one disease transmitted by ticks...
September 2016: Annals of Agricultural and Environmental Medicine: AAEM
Maja Sočan, Mateja Blaško-Markič, Vanja Erčulj, Jaroslav Lajovic
BACKGROUND: Lyme borreliosis disease results from infection by members of the Borrelia burgdorferi sensu lato complex. The most common clinical presentation of Lyme borreliosis is erythema migrans (EM). To gain knowledge of the epidemiological parameters and the risk factors of EM in Slovenia, a survey has been carried out in 2010. METHODS: A short anonymous and self-administrated questionnaire was sent to 4917 notified EM patients in 2010, aiming to collect epidemiological data and assess socio-economic determinants in patients with EM...
December 2015: Zdravstveno Varstvo
Noémie S Becker, Gabriele Margos, Helmut Blum, Stefan Krebs, Alexander Graf, Robert S Lane, Santiago Castillo-Ramírez, Andreas Sing, Volker Fingerle
BACKGROUND: The Borrelia burgdorferi sensu lato (s.l.) species complex consists of tick-transmitted bacteria and currently comprises approximately 20 named and proposed genospecies some of which are known to cause Lyme Borreliosis. Species have been defined via genetic distances and ecological niches they occupy. Understanding the evolutionary relationship of species of the complex is fundamental to explaining patterns of speciation. This in turn forms a crucial basis to frame testable hypotheses concerning the underlying processes including host and vector adaptations...
2016: BMC Genomics
Alicja Gryczyńska, Renata Welc-Falęciak
Seeking evidence to confirm that blackbirds (Turdus merula) may be involved in environmental maintenance of Borrelia burgdorferi s.l. (the causative agent of Lyme borreliosis), we conducted a long-term study over three separate 2-year periods, together embracing a span of almost 20 years, all in the same area in northeastern Poland. We examined a total of 78 blackbirds and collected 623 Ixodes ricinus ticks feeding on them. The tick infestation prevalence was found to be very high (89.7 %). Among all ticks collected, 9...
November 2016: Experimental & Applied Acarology
Slawomir Dudek, Ewa Ziółko, Magdalena Kimsa-Dudek, Krzysztof Solarz, Urszula Mazurek, Aleksander Wierzgoń, Teresa Kokot, Małgorzata Muc-Wierzgoń
The similarity of Lyme borreliosis to other diseases and its complex pathogenesis present diagnostic and therapeutic difficulties. The changes that occur at the cellular and molecular levels after a Borrelia sp. infection still remain poorly understood. Therefore, the present study focused on the expression of TLR and TLR-signaling genes in human dermal fibroblasts in the differentiation of an infection with Borrelia burgdorferi sensu lato spirochetes. Normal human dermal fibroblasts were cultured with the spirochetes of Borrelia burgdorferi sensu stricto, Borrelia afzelii and Borrelia garinii...
September 7, 2016: Archivum Immunologiae et Therapiae Experimentalis
L Castilla-Guerra, M C Fernandez-Moreno, S Vergara-Lopez, M Merino-Rumin, M A Colmenero-Camacho
INTRODUCTION: Tick-borne relapsing fever (TBRF) can cause neurological complications. There are hardly any studies in Spain on this subject. AIM: To study the prevalence and clinical characteristics of neurological complications of patients with TBRF. PATIENTS AND METHODS: We retrospectively reviewed all the patients attended with TBRF over 12 years (2004-2015) in a hospital in a rural area of southern Spain. RESULTS: We included 75 patients, 42 males (56%)...
September 16, 2016: Revista de Neurologia
Melanie Uhde, Mary Ajamian, Xueting Li, Gary P Wormser, Adriana Marques, Armin Alaedini
BACKGROUND:  Infection with Borrelia burgdorferi, the causative agent of Lyme disease, triggers host immune responses that affect the clinical outcome and are a source of biomarkers with diagnostic utility. Although adaptive immunity to B. burgdorferi has been extensively characterized, considerably less information is available about the development of innate acute-phase responses in Lyme disease. Our aim in this study was to evaluate the expression of C-reactive protein (CRP) and serum amyloid A (SAA), the prototype acute-phase response proteins, in the context of the varying manifestations associated with Lyme borreliosis...
September 1, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
Saraniya Sathiamoorthi, Wendy M Smith
PURPOSE OF REVIEW: Tick-borne diseases are increasing in incidence and geographic distribution. Several diseases endemic to the United States have ophthalmic manifestations, including the most common tick-borne disease, Lyme borreliosis. As ocular complaints may lead a patient to seek medical evaluation, it is important to be aware of the systemic and ophthalmic manifestations of tick-borne diseases in order to make the correct diagnosis. RECENT FINDINGS: Vision-threatening ophthalmic manifestations are relatively common in Lyme disease and Rocky Mountain spotted fever...
November 2016: Current Opinion in Ophthalmology
Aleksandar Potkonjak, Gabriela Kleinerman, Ricardo Gutiérrez, Sara Savić, Vuk Vračar, Yaarit Nachum-Biala, Aleksandar Jurišić, Alicia Rojas, Aleksandra Petrović, Ivana Ivanović, Shimon Harrus, Gad Baneth
Lyme borreliosis is the most common tick-borne infectious disease in Eurasia. Borrelia miyamotoi is the only known relapsing fever Borrelia group spirochete transmitted by Ixodes species. The aim of this study was to investigate the presence of Lyme Borrelia spp. and relapsing fever Borrelia spp. in Ixodes ricinus ticks collected from dogs and the vegetation from different parts of Vojvodina, Serbia. A total of 71 Ixodes ricinus ticks were collected and screened for the presence of Lyme Borrelia spp. group and relapsing fever Borrelia spp...
October 2016: Vector Borne and Zoonotic Diseases
Bobbi S Pritt, Laurel B Respicio-Kingry, Lynne M Sloan, Martin E Schriefer, Adam J Replogle, Jenna Bjork, Gongping Liu, Luke C Kingry, Paul S Mead, David F Neitzel, Elizabeth Schiffman, Diep K Hoang Johnson, Jeffrey P Davis, Susan M Paskewitz, David Boxrud, Alecia Deedon, Xia Lee, Tracy K Miller, Michelle A Feist, Christopher R Steward, Elitza S Theel, Robin Patel, Cole L Irish, Jeannine M Petersen
Lyme borreliosis (LB) is a multisystem disease caused by spirochetes in the Borrelia burgdorferi sensu lato (Bbsl) genospecies complex. We previously described a novel Borrelia species (type strain MN14-1420T) that causes LB among patients with exposures to ticks in the upper midwestern United States. Patients infected with the novel species demonstrated high levels of spirochetemia and differing clinical symptoms as compared to other Bbsl genospecies. The organism was detected from human specimens using polymerase chain reaction, microscopy, serology and culture...
August 24, 2016: International Journal of Systematic and Evolutionary Microbiology
Claudia R Molins, Mark J Delorey, Christopher Sexton, Martin E Schriefer
Current recommendation for the laboratory confirmation of Lyme disease is serology-based diagnostics. Specifically, a standardized two-tiered testing (STTT) algorithm is applied that utilizes a first-tier immunofluorescence assay (IFA) or enzyme immunoassay (EIA) that if positive or equivocal is followed by second-tier immunoblotting. Despite the standardization and performance achievements, STTT is considered technically complex and subjective, as well as insensitive for early acute infection. These issues have prompted development of novel algorithms and testing platforms...
August 24, 2016: Journal of Clinical Microbiology
Emily S Hansen, Megan E Johnson, Ronald F Schell, Dean T Nardelli
Lyme borreliosis, which is caused in the United States by the spirochete Borrelia burgdorferi, may manifest as different arrays of signs, symptoms and severities between infected individuals. Recent studies have indicated that particularly severe forms of Lyme borreliosis in humans are associated with an increased Th17 response. Here, we hypothesized that a murine model combining the dysregulated immune response of an environment lacking interleukin-10 (IL-10) with a robust T-cell-driven inflammatory response would reflect arthritis associated with the production of IL-17 by CD4+ cells...
October 2016: Pathogens and Disease
Nikola Pantchev, Majda Globokar Vrhovec, Silvia Pluta, Reinhard K Straubinger
There are only few reports on Lyme borreliosis (LB) in cats. The reasons might be a different tick infestation in cats compared to dogs, a low susceptibility for tick-borne infections or a low awareness of veterinarians for tick-borne diseases in feline patients. The aim of this study was to determine the proportion of antibodies against Borrelia burgdorferi sensu lato (Bbsl) in feline sera, to compare the significance of feline versus canine LB, as well as to evaluate possible implications on disease occurrence...
July 2016: Berliner und Münchener Tierärztliche Wochenschrift
Wei Liu, Hui-Xin Liu, Lin Zhang, Xue-Xia Hou, Kang-Lin Wan, Qin Hao
A novel isothermal detection for recombinase polymerase amplification with lateral flow (LF-RPA) was established for Borrelia burgdorferi (B. burgdorferi) detection in this study. This assay with high sensitivity and specificity can get a visible result without any additional equipment in 30 min. We designed a pair of primers according to recA gene of B. burgdorferi strains and a methodology evaluation was performed. The results showed that the RPA assay based on the recA gene was successfully applied in B...
2016: International Journal of Molecular Sciences
Sally J Cutler, Eva Ruzic-Sabljic, Aleksandar Potkonjak
Lyme borreliosis (or Lyme disease) has become a virtual household term to the exclusion of other forgotten, emerging or re-emerging borreliae. We review current knowledge regarding these other borreliae, exploring their ecology, epidemiology and pathological potential, for example, for the newly described B. mayonii. These bacteria range from tick-borne, relapsing fever-inducing strains detected in some soft ticks, such as B. mvumii, to those from bat ticks resembling B. turicatae. Some of these emerging pathogens remain unnamed, such as the borrelial strains found in South African penguins and some African cattle ticks...
August 11, 2016: Molecular and Cellular Probes
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