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https://www.readbyqxmd.com/read/27909484/lyme-arrhythmia-in-an-avid-golfer-a-diagnostic-challenge-and-a-therapeutic-dilemma
#1
Ujjwal Rastogi, Dr Nidhi Kumars
Lyme disease is a multisystem disorder affecting dermatologic, cardiac, nervous and musculoskeletal systems. Cardiac manifestations occur in about 5% of Lyme infections and stem from the involvement of the cardiac conduction system, resulting in varying degrees of sino-atrioventricular block. Occasionally, Lyme infection may also present with myopericarditis. Unlike isolated conduction node disease, myocardial involvement presents a great diagnostic and therapeutic dilemma for the physician. We report the case of a 68 year-old male cardiologist who presented with new onset exertional dyspnea and palpitations...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27902419/influence-of-tick-and-mammalian-physiological-temperatures-on-borrelia-burgdorferi-biofilms
#2
Shafiq Shaikh, Venkata Arun Timmaraju, Jason P Torres, Kayla M Socarras, Priyanka A S Theophilus, Eva Sapi
The spirochaete bacterium Borrelia burgdorferisensu lato is the aetiologic agent of Lyme disease. Borrelia is transmitted to mammals through tick bite and is adapted to survive at tick and mammalian physiological temperatures. We have previously shown that B. burgdorferi can exist in different morphological forms, including the antibiotic-resistant biofilm form, in vitro and in vivo. B. burgdorferi forms aggregates in ticks as well as in humans, indicating potential of biofilm formation at both 23 and 37 °C...
November 2016: Microbiology
https://www.readbyqxmd.com/read/27900646/the-potential-of-omics-technologies-in-lyme-disease-biomarker-discovery-and-early-detection
#3
REVIEW
Alaa Badawi
Lyme borreliosis (LB) is the most prevalent arthropod-borne infectious disease in North America and many countries of the temperate Northern Hemisphere. It is associated with local and systemic manifestations and has persistent post-treatment health complications in some individuals. Innate and acquired immunity-related inflammation is likely to play a critical role in both host defense against Borrelia burgdorferi and disease severity. Large-scale analytical approaches to quantify gene expression (transcriptomics), proteins (proteomics) and metabolites (metabolomics) in LB have recently emerged with a potential to advance the development of disease biomarkers in early, disseminated and posttreatment disease stages...
November 29, 2016: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/27898670/gray-wolf-exposure-to-emerging-vector-borne-diseases-in-wisconsin-with-comparison-to-domestic-dogs-and-humans
#4
Rocio F Jara, Adrian P Wydeven, Michael D Samuel
World-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. In the United Sates, concern about vector-borne diseases in canines has focused on Lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. Of these diseases, Lyme and anaplasmosis are also frequently diagnosed in humans. Gray wolves (Canis lupus) recolonized Wisconsin in the 1970s, and we evaluated their temporal and geographic patterns of exposure to these four vector-borne diseases in Wisconsin as the population expanded between 1985 and 2011...
2016: PloS One
https://www.readbyqxmd.com/read/27892737/progress-in-the-molecular-diagnosis-of-lyme-disease
#5
Eva Ružić-Sabljić, Tjaša Cerar
Current laboratory testing of Lyme borreliosis mostly relies on serological methods with known limitations. Diagnostic modalities enabling direct detection of pathogen at the onset of the clinical signs could overcome some of the limitations. Molecular methods detecting borrelial DNA seem to be the ideal solution, although there are some aspects that need to be considered. Areas covered: This review represent summary and discussion of the published data obtained from literature searches from PubMed and The National Library of Medicine (USA) together with our own experience on molecular diagnosis of Lyme disease...
November 28, 2016: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/27891258/lyme-carditis-an-interesting-trip-to-third-degree-heart-block-and-back
#6
Maxwell Eyram Afari, Fady Marmoush, Mobeen Ur Rehman, Umama Gorsi, Joseph F Yammine
Carditis is an uncommon presentation of the early disseminated phase of Lyme disease. We present the case of a young female who presented with erythema migrans and was found to have first-degree heart block which progressed to complete heart block within hours. After receiving ceftriaxone, there was complete resolution of the heart block in sequential fashion. Our case illustrates the importance of early recognition and anticipation of progressive cardiac conduction abnormalities in patients presenting with Lyme disease...
2016: Case Reports in Cardiology
https://www.readbyqxmd.com/read/27887625/the-impact-of-temperature-and-precipitation-on-blacklegged-tick-activity-and-lyme-disease-incidence-in-endemic-and-emerging-regions
#7
James C Burtis, Patrick Sullivan, Taal Levi, Kelly Oggenfuss, Timothy J Fahey, Richard S Ostfeld
BACKGROUND: The incidence of Lyme disease shows high degrees of inter-annual variation in the northeastern United States, but the factors driving this variation are not well understood. Complicating matters, it is also possible that these driving factors may vary in regions with differing histories of Lyme disease endemism. We evaluated the effect of the number of hot (T > 25 °C), dry (precipitation = 0) days during the questing periods of the two immature Ixodes scapularis life stages (larval and nymphal) on inter-annual variation in Lyme disease incidence between 2000 and 2011 in long-term endemic versus recently endemic areas...
November 25, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27885483/neuroborreliosis
#8
John J Halperin
Appropriate, critical application of evidence-based diagnostic criteria enables both a clear definition of what constitutes neuroborreliosis-nervous system infection with Borrelia burgdorferi sensu stricto in the US, B garinii and less commonly B. afzelii and other species in Europe-and recognition that this disorder is quite similar in Europe and the US. Most commonly evidenced by lymphocytic meningitis and/or multifocal inflammation of the peripheral (common; cranial neuropathy, radiculopathy, mononeuropathy multiplex) or central (rare) nervous system, it is readily diagnosed and highly antibiotic responsive...
November 24, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27883377/borrelia-burgdorferi-%C3%A2-morphological-structure-and-motility-as-adaptation-for-transmission-and-survival-in-the-habitat-of-a-tick-vertebrate-setup
#9
Paweł Penza, Anna Moniuszko-Malinowska, Piotr Czupryna, Sławomir Pancewicz, Joanna Zajkowska
Lyme borreliosis is a multisystem chronic disease caused by Borrelia burgdorferi sensu lato (s.l.) spirochete transmitted by Ixodes. This bacterium has a remarkable ability to survive in tick-vertebrate setup. Its infection causes diagnostic and clinical difficulties. It was distinguished as a separate disease entity over 30 years ago. Observations made by Steere et al. proved to be a milestone since they found correlation between the occurrence of skin and joint lesions with tick bites. Further studies showed that the disease affects not only joints and skin, but also nervous and circulatory systems...
2016: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/27877080/established-population-of-blacklegged-ticks-with-high-infection-prevalence-for-the-lyme-disease-bacterium-borrelia-burgdorferi-sensu-lato-on-corkscrew-island-kenora-district-ontario
#10
John D Scott, Janet E Foley, Kerry L Clark, John F Anderson, Lance A Durden, Jodi M Manord, Morgan L Smith
We document an established population of blacklegged ticks, Ixodes scapularis, on Corkscrew Island, Kenora District, Ontario, Canada. Primers of the outer surface protein A (OspA) gene, the flagellin (fla) gene, and the flagellin B (flaB) gene were used in the PCR assays to detect Borrelia burgdorferi sensu lato (s.l.), the Lyme disease bacterium. In all, 60 (73%) of 82 adult I. scapularis, were infected with B. burgdorferi s.l. As well, 6 (43%) of 14 unfed I. scapularis nymphs were positive for B. burgdorferi s...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27876087/heterogeneity-in-the-abundance-and-distribution-of-ixodes-ricinus-and-borrelia-burgdorferi-sensu-lato-in-scotland-implications-for-risk-prediction
#11
Caroline Millins, Lucy Gilbert, Paul Johnson, Marianne James, Elizabeth Kilbride, Richard Birtles, Roman Biek
BACKGROUND: Cases of Lyme borreliosis, a vector-borne zoonosis caused by bacteria in the Borrelia burgdorferi (sensu lato) species group, have increased in recent years in Europe. Knowledge of environmental factors associated with abundance of the tick vector Ixodes ricinus and the pathogen B. burgdorferi (s.l.) is of interest to understand responses to environmental changes, predict variation in risk and to inform management interventions. METHODS: Nineteen woodland sites across Scotland were surveyed in 2012 for B...
November 22, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27871570/peroperative-cardiogenic-shock-suggesting-acute-coronary-syndrome-as-initial-manifestation-of-lyme-carditis
#12
C Clinckaert, S Bidgoli, T Verbeet, R Attou, P Gottignies, J Massaut, P Reper
Carditis can complicate Lyme disease in an estimated <5% of cases, and cardiogenic shock and severe cardiac arrhythmias are described with electrocardiographic abnormalities that could be suggestive of coronary manifestations. We report a case of severe persistent biventricular heart failure complicated by cardiac arrhythmias as initial manifestation of a Lyme disease developing peroperatively electrocardiographic abnormalities suggesting acute transmural myocardial infarction.
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27870540/lyme-disease-in-poland-in-2014
#13
Iwona Paradowska-Stankiewicz, Irena Chrześcijańska
INTRODUCTION: Lyme disease is the most common tick-borne disease, caused by spirochetes of the Borrelia genus transmitted by ticks of the Ixodes genus. Infection caused by Borrelia burgdorferi occur throughout Poland and therefore, according also to ECDC description, the whole country should be considered as an endemic area. OBJECTIVES: The aim of this study was to assess the epidemiological situation of Lyme disease in Poland in 2014 in comparison to the previous years...
2016: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/27869793/lyme-disease-spirochaete-borrelia-burgdorferi-does-not-require-thiamin
#14
Kai Zhang, Jiang Bian, Yijie Deng, Alexis Smith, Roy E Nunez, Michael B Li, Utpal Pal, Ai-Ming Yu, Weigang Qiu, Steven E Ealick, Chunhao Li
Thiamin pyrophosphate (ThDP), the active form of thiamin (vitamin B1), is believed to be an essential cofactor for all living organisms(1,2). Here, we report the unprecedented result that thiamin is dispensable for the growth of the Lyme disease pathogen Borrelia burgdorferi (Bb)(3). Bb lacks genes for thiamin biosynthesis and transport as well as known ThDP-dependent enzymes(4), and we were unable to detect thiamin or its derivatives in Bb cells. We showed that eliminating thiamin in vitro and in vivo using BcmE, an enzyme that degrades thiamin, has no impact on Bb growth and survival during its enzootic infectious cycle...
November 21, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27867375/ceftriaxone-pulse-dosing-fails-to-eradicate-biofilm-like-microcolony-b-burgdorferi-persisters-which-are-sterilized-by-daptomycin-doxycycline-cefuroxime-without-pulse-dosing
#15
Jie Feng, Shuo Zhang, Wanliang Shi, Ying Zhang
Although the majority of Lyme disease patients can be cured, at least 10-20% of the patients continue to suffer from persisting symptoms such as fatigue, muscular and joint pain, and neurologic impairment after standard 2-4 week antibiotic treatment. While the causes for this post-treatment Lyme disease symptoms are unclear, one possibility is due to Borrelia burgdorferi persisters that are not effectively killed by current antibiotics such as doxycycline or amoxicillin used to treat Lyme disease. A previous study showed that four rounds of ceftriaxone pulse dosing treatment eradicated B...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27866446/clinical-and-serological-one-year-follow-up-of-patients-after-the-bite-of-ixodes-ricinus-ticks-infected-with-borrelia-burgdorferi-sensu-lato
#16
Violeta T Briciu, Mirela Flonta, Doina F Ţăţulescu, Fabian Meyer, Daniela Sebah, Dumitru Cârstina, Andrei D Mihalca, Călin M Gherman, Cecilia Hizo-Teufel, Ingrid Huber, Volker Fingerle, Mihaela Lupșe
BACKGROUND: The risk of developing Lyme borreliosis (LB) after the bite of a Borrelia (B.) burgdorferi sensu lato (s.l.) infected tick in Romania is unknown. METHODS: The present prospective study, performed in 2010-2011 in a hospital in Romania, has followed-up clinical and serological outcome of patients that presented with B. burgdorferi positive Ixodes (I.) ricinus bite. A second group of patients, including age, sex and residence-matched individuals bitten by B...
November 21, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27860010/detection-of-lyme-disease-and-anaplasmosis-pathogens-via-pcr-in-pennsylvania-deer-ked
#17
M Buss, L Case, B Kearney, C Coleman, J D Henning
Borrelia burgdorferi and Anaplasma phagocytophilum are obligate intracellular parasites that maintain their life cycles in enzoonotic vector-host cycles with Ixodes scapularis as a vector. In addition to ticks, the hosts are commonly infested with insects from the Hippoboscidae family. This study confirms the presence of B. burgdorferi and A. phagocytophilum in deer keds (Lipoptena cervi) removed from white-tailed deer using PCR. Detection of these pathogens in deer ked represents a potential novel susceptibility of wildlife and also suggests the risk of transmission of these pathogens to humans and animals alike through the bite of an infected ectoparasite...
December 2016: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/27859766/structural-and-molecular-analysis-of-a-protective-epitope-of-lyme-disease-antigen-ospa-and-antibody-interactions
#18
Shivender Shandilya, Nese Kurt Yilmaz, Andrew Sadowski, Ejemel Monir, Zachary A Schiller, William D Thomas, Mark S Klempner, Celia A Schiffer, Yang Wang
The murine monoclonal antibody LA-2 recognizes a clinically protective epitope on outer surface protein (OspA) of Borrelia burgdorferi, the causative agent of Lyme disease in North America. Human antibody equivalence to LA-2 is the best serologic correlate of protective antibody responses following OspA vaccination. Understanding the structural and functional basis of the LA-2 protective epitope is important for developing OspA-based vaccines and discovering prophylactic antibodies against Lyme disease. Here, we present a detailed structure-based analysis of the LA-2/OspA interaction interface and identification of residues mediating antibody recognition...
November 16, 2016: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/27858931/tick-microbiome-and-pathogen-acquisition-altered-by-host-blood-meal
#19
Andrea Swei, Jessica Y Kwan
Lyme disease, a zoonotic disease, is the most prevalent vector-borne disease in the Northern Hemisphere. Diversity of the vector (tick) microbiome can impact pathogen transmission, yet the biotic and abiotic factors that drive microbiome diversity are largely unresolved, especially under natural, field conditions. We describe the microbiome of Ixodes pacificus ticks, the vector for Lyme disease in the western United States, and show a strong impact of host blood meal identity on tick microbiome species richness and composition...
November 18, 2016: ISME Journal
https://www.readbyqxmd.com/read/27857714/t-cells-exacerbate-lyme-borreliosis-in-tlr2-deficient-mice
#20
Carrie E Lasky, Carmela L Pratt, Kinsey A Hilliard, John L Jones, Charles R Brown
Infection of humans with the spirochete, Borrelia burgdorferi, causes Lyme borreliosis and can lead to clinical manifestations such as arthritis, carditis, and neurological conditions. Experimental infection of mice recapitulates many of these symptoms and serves as a model system for the investigation of disease pathogenesis and immunity. Innate immunity is known to drive the development of Lyme arthritis and carditis, but the mechanisms driving this response remain unclear. Innate immune cells recognize B...
2016: Frontiers in Immunology
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