keyword
MENU ▼
Read by QxMD icon Read
search

Burgdorferi

keyword
https://www.readbyqxmd.com/read/28735308/bactericidal-activity-of-octenidine-to-various-genospecies-of-borrelia-burgdorferi-sensu-lato-spirochetes-in-vitro-and-in-vivo
#1
Stanisława Tylewska-Wierzbanowska, Urszula Rogulska, Grażyna Lewandowska, Tomasz Chmielewski
The aim of our studies was to invent a reliable method for detection of the bactericidal activity of disinfectants against Borrelia burgdorferi in suspension (in vitro) and in cell line cultures (in vivo). In the suspension method, 0.01% octenidine at 20°C and 35°C was bactericidal to Borrelia afzeli; Borrelia garini, B. burgdorferi sensu stricto after 5 minutes treatment. Increase of the temperature to 35°C speed up the bactericidal effect to 1 minute. The bactericidal action of octenidine towards B. burgdorferi spirochetes growing in fibroblasts was less effective and needed a longer time to kill them than in the suspension...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28717031/phagocytic-receptors-activate-syk-and-src-signaling-during-borrelia-burgdorferi-phagocytosis
#2
Tess L Killpack, Maria Ballesteros, Stephen C Bunnell, Alice Bedugnis, Lester Kobzik, Linden T Hu, Tanja Petnicki-Ocwieja
Phagocytosis of the Lyme disease causing pathogen Borrelia burgdorferi has been shown to be important in generating an inflammatory response to the pathogen. As a result, understanding the mechanisms of phagocytosis has been an area of great interest in the field of Lyme disease. Several cell surface receptors that participate in B. burgdorferi phagocytosis have been reported, including scavenger receptor MARCO and integrin α3β1. We sought to define the mechanisms by which these receptors mediated phagocytosis and to identify signaling pathways activated downstream of these receptors upon contact with B...
July 17, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28714333/-borrelia-miyamotoi-a-recently-identified-human-pathogenic-tick-borne-relapsing-fever-spirochete
#3
Sándor Szekeres, András Lakos, Gábor Földvári
Borrelia miyamotoi is a recently described relapsing fever spirochete transmitted by ticks of the Ixodes ricinus complex. This pathogen is different from Borrelia burgdorferi sensu lato (the Lyme borreliosis spirochetes) in its epidemiology, ecology and also genetics. Over 50 patients have been described worldwide with Borrelia miyamotoi disease, and three immunocompromised patients were reported with neurological symptoms. Our knowledge about Borrelia miyamotoi infection in ticks and its distribution in different habitats and also the mechanism of the infection is limited...
July 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28713599/lyme-carditis-buried-beneath-st-segment-elevations
#4
Basia Michalski, Adrian Umpierrez De Reguero
Lyme disease is caused by the spirochete Borrelia burgdorferi and is carried to human hosts by infected ticks. There are nearly 30,000 cases of Lyme disease reported to the CDC each year, with 3-4% of those cases reporting Lyme carditis. The most common manifestation of Lyme carditis is partial heart block following bacterial-induced inflammation of the conducting nodes. Here we report a 45-year-old gentleman that presented to the hospital with intense nonradiating chest pressure and tightness. Lab studies were remarkable for elevated troponins...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28711274/clinical-association-lyme-disease-and-guillain-barre-syndrome
#5
Kinner Patel, Siddharth Shah, Dinesh Subedi
Guillain-Barre Syndrome (GBS) is a life-threatening condition in which patients may present to the Emergency Department in respiratory distress leading to death. The early identification and treatment of such a condition is paramount in preventing mortality. While there are many infections associated with GBS, the association with Lyme disease is uncommon. Through our case we aim to highlight Borrelia burgdorferi as an important antecedent infection associated with the development of GBS. In this case we report a 31-year-old male who was diagnosed with Lyme disease and GBS with relevant clinical presentation including progressive numbness and weakness in bilateral hands and feet for the past 1week along with areflexia...
July 8, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28705983/completed-genome-sequences-of-borrelia-burgdorferi-sensu-stricto-b31-nrz-and-closely-related-patient-isolates-from-europe
#6
Gabriele Margos, Sabrina Hepner, Christoph Mang, Andreas Sing, Bernhard Liebl, Volker Fingerle
Borrelia burgdorferi sensu stricto is a causative agent of human Lyme borreliosis in the United States and Europe. We report here the completed genome sequences of strain B31 isolated from a tick in the United States and two closely related strains from Europe, PAli and PAbe, which were isolated from patients with erythema migrans and neuroborreliosis, respectively.
July 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28691831/-diagnostic-relevance-of-the-chemokine-cxcl13-and-anti-c6-peptide-antibodies-in-patients-with-neuroborreliosis
#7
D Pícha, L Moravcová, D Smíšková
AIM OF THE STUDY: The study was focused on testing the diagnostic value of detection of the chemokine CXCL13 (B lymphocyte chemoattractant) and anti-C6 peptide (synthetic peptide derived from B. burdorferi VlsE protein) antibodies in patients with neuroborreliosis (NB). MATERIAL AND METHODS: One hundred and twenty-nine patients with clinical suspicion of neuroinfection were included in the study. Eighty patients with NB (positive for antibodies in serum and CSF) were subdivided into four groups (A1-A4) based on positivity/negativity of the antibody index (AI) and pleocytosis...
2017: Epidemiologie, Mikrobiologie, Imunologie
https://www.readbyqxmd.com/read/28690096/modeling-the-effects-of-variable-feeding-patterns-of-larval-ticks-on-the-transmission-of-borrelia-lusitaniae-and-borrelia-afzelii
#8
Luca Ferreri, Silvia Perazzo, Ezio Venturino, Mario Giacobini, Luigi Bertolotti, Alessandro Mannelli
Spirochetes belonging to the Borrelia burgdoferi sensu lato (sl) group cause Lyme Borreliosis (LB), which is the most commonly reported vector-borne zoonosis in Europe. B. burgdorferi sl is maintained in nature in a complex cycle involving Ixodes ricinus ticks and several species of vertebrate hosts. The transmission dynamics of B. burgdorferi sl is complicated by the varying competence of animals for different genospecies of spirochetes that, in turn, vary in their capability of causing disease. In this study, a set of difference equations simplifying the complex interaction between vectors and their hosts (competent and not for Borrelia) is built to gain insights into conditions underlying the dominance of B...
July 6, 2017: Theoretical Population Biology
https://www.readbyqxmd.com/read/28676442/a-biochip-based-combined-immunoassay-for-detection-of-serological-status-of-borrelia-burgdorferi-in-lyme-borreliosis
#9
Na-Li Huang, Lei Ye, Hui Lv, Yi-Xin Du, Marion Schneider, Li-Bin Fan, Wei-Dong Du
BACKGROUND: Dithiobis (succinimidyl undecanoate) modified gold surface biochip were used as a combined immunoassay platform for concurrently detecting immune responses to Borrelia burgdorferi (B. burgdorferi) sensu lato antigens, flagellin, outer surface protein C, variable major protein-like sequence proteins, and 3 VlsE protein IR6 peptides. The peptides represented intrinsic Borrelia genospecies: B. burgdorferi sensu stricto, B. garinii, and B. afzelii, respectively. METHODS: Fourier transform infrared spectroscopy was utilized to validate the surface chemical characteristics on the modified gold surface...
July 1, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28674060/in-vitro-susceptibility-of-the-relapsing-fever-spirochete-borrelia-miyamotoi-to-antimicrobial-agents
#10
Joris Koetsveld, Ronald O P Draga, Alex Wagemakers, Annemijn Manger, Anneke Oei, Caroline E Visser, Joppe W Hovius
Hard tick-borne relapsing fever (HTBRF) is an emerging infectious disease throughout the temperate zone caused by the relapsing fever spirochete Borrelia miyamotoi Antibiotic treatment of HTBRF is empirically based on the treatment of Lyme borreliosis, however antibiotic susceptibility of B. miyamotoi has not been studied to date. Thus, we set out to determine the in vitro antimicrobial susceptibility of B. miyamotoiA microdilution method with 96-well microtiter plates was used to determine antibiotic susceptibility of two B...
July 3, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28668566/vaccination-of-horses-with-lyme-vaccines-for-dogs-induces-short-lasting-antibody-responses
#11
Cassandra Guarino, Sanda Asbie, Jennifer Rohde, Amy Glaser, Bettina Wagner
Borrelia burgdorferi can induce Lyme disease. Approved Lyme vaccines for horses are currently not available. In an effort to protect horses, veterinarians are using Lyme vaccines licensed for dogs. However, data to assess the response of horses to, or determine the efficacy of this off-label vaccine use are missing. Here, antibodies against outer surface protein A (OspA), OspC, and OspF were quantified in diagnostic serum submissions from horses with a history of vaccination with canine Lyme vaccines. The results suggested that many horses respond with low and often short-lasting antibody responses...
June 28, 2017: Vaccine
https://www.readbyqxmd.com/read/28659389/diagnosis-of-lyme-associated-uveitis-value-of-serological-testing-in-a-tertiary-centre
#12
Alexia Bernard, Laurent Kodjikian, Amro Abukhashabh, Chantal Roure-Sobas, Andre Boibieux, Philippe Denis, Christiane Broussolle, Pascal Seve
AIMS: To determine the frequency and clinical presentation of Lyme disease in patients with uveitis and to assess the value of Borrelia burgdorferi serological testing. METHODS: Retrospective study on all patients with uveitis who were referred to our tertiary hospital were serologically tested for Lyme in our laboratory between 2003 and 2016. Screening consisted of determining B. burgdorferi serum IgG and IgM by ELISA method. The patient's serology was considered as positive if the ELISA-positive result in IgM and/or IgG was confirmed by an immunoblot positive in IgM and/or IgG...
June 28, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28656017/small-rnas-of-borrelia-burgdorferi-characterizing-functional-regulators-in-a-sea-of-srnas%C3%A2
#13
REVIEW
Meghan C Lybecker, D Scott Samuels
Borrelia (Borreliella) burgdorferi and closely related genospecies are the causative agents of Lyme disease, the most common tick-borne disease north of the equator. The bacterium, a member of the spirochete phylum, is acquired by a tick vector that feeds on an infected vertebrate host and is transmitted to another vertebrate during subsequent feeding by the next tick stage. The precise navigation of this enzootic cycle entails the regulation of genes required for these two host-specific phases as well as the transitions between them...
June 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/28655322/interaction-of-primary-mast-cells-with-borrelia-burgdorferi-sensu-stricto-role-in-transmission-and-dissemination-in-c57bl-6-mice
#14
Quentin Bernard, Zhenping Wang, Anna Di Nardo, Nathalie Boulanger
BACKGROUND: Borrelia burgdorferi (sensu lato), the causative agent of Lyme borreliosis is a bacterium transmitted by hard ticks, Ixodes spp. Bacteria are injected into the host skin during the tick blood meal with tick saliva. There, Borrelia and saliva interact together with skin cells such as keratinocytes, fibroblasts, mast cells and other specific immune cells before disseminating to target organs. METHODS: To study the role of mast cells in the transmission of Lyme borreliosis, we isolated mouse primary mast cells from bone marrow and incubated them in the presence of Borrelia burgdorferi (sensu stricto) and tick salivary gland extract...
June 27, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28654563/neuroborreliosis-in-swedish-children-a-population-based-study-on-incidence-and-clinical-characteristics
#15
Liv Södermark, Vignir Sigurdsson, Wilhelmina Näs, Pernilla Wall, Birger Trollfors
BACKGROUND: Borrelia burgdorferi is a common cause of bacterial meningitis but there are very few studies on incidence in Europe. OBJECTIVE: To report the incidence and symptoms of neuroborreliosis in Swedish children. DESIGN: Medical records of children (<15 years) treated for neuroborreliosis 2002-2014 were studied retrospectively. The patients were identified in the computerized registers of discharge diagnoses at the Departments of Pediatrics and Infectious Diseases in Gothenburg, Borås, Trollhättan and Halmstad using ICD-10 diagnosis codes G51...
June 24, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28649922/in-vivo-imaging-of-lyme-arthritis-in-mice-by-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography
#16
A Pietikäinen, R Siitonen, H Liljenbäck, O Eskola, M Söderström, A Roivainen, J Hytönen
OBJECTIVE: Lyme borreliosis (LB) is a tick-borne infectious disease caused by Borrelia burgdorferi spirochaetes, which are able to disseminate from the tick-bite site to distant organs. Mouse models are widely used to study LB and especially Lyme arthritis (LA), but only a few whole-animal in vivo imaging studies on the pathogenesis of B. burgdorferi infection in mice have been published so far. The existing imaging techniques have their drawbacks and, therefore, novel tools to complement the array of available LB imaging methodologies are needed...
June 26, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28635589/regulation-of-escherichia-coli-pathogenesis-by-alternative-sigma-factor-n
#17
James T Riordan, Avishek Mitra
σ(N) (also σ(54)) is an alternative sigma factor subunit of the RNA polymerase complex that regulates the expression of genes from many different ontological groups. It is broadly conserved in the Eubacteria with major roles in nitrogen metabolism, membrane biogenesis, and motility. σ(N) is encoded as the first gene of a five-gene operon including rpoN (σ(N)), ptsN, hpf, rapZ, and npr that has been genetically retained among species of Escherichia, Shigella, and Salmonella. In an increasing number of bacteria, σ(N) has been implicated in the control of genes essential to pathogenic behavior, including those involved in adherence, secretion, immune subversion, biofilm formation, toxin production, and resistance to both antimicrobials and biological stressors...
June 2017: EcoSal Plus
https://www.readbyqxmd.com/read/28633503/range-expansion-and-increasing-borrelia-burgdorferi-infection-of-the-tick-ixodes-scapularis-acari-ixodidae-in-iowa-1990-2013
#18
Jonathan D Oliver, Steve W Bennett, Lorenza Beati, Lyric C Bartholomay
A passive surveillance program monitored ticks submitted by the public in Iowa from 1990-2013. Submitted ticks were identified to species and life stage, and Ixodes scapularis Say nymphs and adults were tested for the presence of Borrelia burgdorferi. An average of 2.6 of Iowa's 99 counties submitted first reports of I. scapularis per year over the surveillance period, indicating expansion of this tick species across the state. The proportion of vector ticks infected by B. burgdorferi increased over time between 1998 and 2013...
June 17, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28630010/borrelia-burgdorferi-infection-induces-lipid-mediator-production-during-lyme-arthritis
#19
Charles R Brown, Edward A Dennis
Experimental Lyme arthritis provides a mouse model for exploring the development of pathology following infection of C3H mice with Borrelia burgdorferi. Infected mice develop a reliable inflammatory arthritis of the ankle joint with severity that typically peaks around two to three weeks post-infection and then undergoes spontaneous resolution. This makes experimental Lyme arthritis an excellent model for investigating the mechanisms that drive both the development and resolution phases of inflammatory disease...
June 16, 2017: Biochimie
https://www.readbyqxmd.com/read/28625898/doctor-says-you-are-cured-but-you-still-feel-the-pain-borrelia-dna-persistence-in-lyme-disease
#20
REVIEW
Jorge Cervantes
Lyme disease is a zoonosis caused by infection with Borrelia burgdorferi (Bb). A great amount of research has attempted to elucidate the mechanisms by which Bb causes inflammation and chronic symptomatology in some patients. Patients often seek unconventional treatments that lack scientific evidence, as medical care is unable to effectively explain and treat their illness. Bb-DNA can persist for long periods of time in some individuals, even after antibiotic therapy. Herein, scientific rationale is presented for a new therapeutic approach against remaining bacterial DNA, and/or increasing the ability of human macrophages to remove extracellular Bb DNA...
June 15, 2017: Microbes and Infection
keyword
keyword
39873
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"