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https://www.readbyqxmd.com/read/29158430/characterization-of-stress-and-innate-immunity-resistance-of-wild-type-and-%C3%AE-p66-borrelia-burgdorferi
#1
Michael W Curtis, Beth L Hahn, Kai Zhang, Chunhao Li, Richard T Robinson, Jenifer Coburn
Borrelia burgdorferi is a causative agent of Lyme disease, the most common arthropod-borne disease in the United States. B. burgdorferi evades host immune defenses to establish a persistent, disseminated infection. Previous work showed that P66-deficient B. burgdorferi (Δp66) is cleared quickly after inoculation in mice. We demonstrate that Δp66 is rapidly cleared from the skin inoculation site prior to dissemination. The rapid clearance of Δp66 is not due to inherent defects in multiple properties that might affect infectivity: bacterial outer membrane integrity, motility, chemotactic response, or nutrient acquisition...
November 20, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29158428/borrelia-burgdorferi-glycosaminoglycan-binding-protein-bgp-in-the-b31-strain-is-not-essential-for-infectivity-despite-facilitating-adherence-and-tissue-colonization
#2
Samantha Schlachter, Janakiram Seshu, Tao Lin, Steven Norris, Nikhat Parveen
Lyme disease causing Borrelia burgdorferi is transmitted into the mammalian host by an infected tick bite. Successful infection relies on the ability of this extracellular pathogen to persist and colonize different tissues. B. burgdorferi encodes a large number of adhesins that are able to interact with host ligands to facilitate adherence, and tissue colonization. Multiple glycosaminoglycan binding proteins presence in B. burgdorferi offer a degree of redundancy of function during infection, and highlights the importance for glycosaminoglycans as host cell receptors for spirochete adherence...
November 20, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29157649/without-further-delay-lyme-carditis
#3
Ajay K Sharma, Nureddin Almaddah, Kashif Chaudhry, Sarju Ganatra, Ghulam M Chaudhry, Jonathan Silver
No abstract text is available yet for this article.
November 17, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/29157500/unraveling-diagnostic-uncertainty-surrounding-lyme-disease-in-children-with-neuropsychiatric-illness
#4
REVIEW
Michael P Koster, Aris Garro
Lyme disease is endemic in parts of the United States, including New England, the Atlantic seaboard, and Great Lakes region. The presentation has various manifestations, many of which can mimic psychiatric diseases in children. Distinguishing manifestations of Lyme disease from those of psychiatric illnesses is complicated by inexact diagnostic tests and misuse of these tests when they are not clinically indicated. This article aims to describe manifestations of Lyme disease in children with an emphasis on Lyme neuroborreliosis...
January 2018: Child and Adolescent Psychiatric Clinics of North America
https://www.readbyqxmd.com/read/29157278/ticks-and-the-city-are-there-any-differences-between-city-parks-and-natural-forests-in-terms-of-tick-abundance-and-prevalence-of-spirochaetes
#5
Maciej Kowalec, Tomasz Szewczyk, Renata Welc-Falęciak, Edward Siński, Grzegorz Karbowiak, Anna Bajer
BACKGROUND: Ixodes ricinus ticks are commonly encountered in either natural or urban areas, contributing to Lyme disease agents Borreliella [(Borrelia burgdorferi (sensu lato)] spp. and Borrelia miyamotoi enzootic cycles in cities. It is an actual problem whether urbanization affects pathogen circulation and therefore risk of infection. The aim of the study was to evaluate main tick-borne disease risk factors in natural, endemic areas of north-east (NE) Poland (Białowieża) and urban areas of central Poland (Warsaw), measuring tick abundance/density, prevalence of infection with spirochaetes and diversity of these pathogens in spring-early summer and late summer-autumn periods between 2012 and 2015...
November 21, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29155838/the-tick-biocontrol-agent-metarhizium-brunneum-m-anisopliae-strain-f52-does-not-reduce-non-target-arthropods
#6
Ilya R Fischhoff, Felicia Keesing, Richard S Ostfeld
Previous studies have found that Met52®, which contains the entomopathogenic fungus Metarhizium brunneum, is effective in reducing the abundance of Ixodes scapularis, the tick vector for the bacterium causing Lyme disease and for other tick-borne pathogens. Given widespread interest in effective, safe methods for controlling ticks, Met52 has the potential to be used at increasing scales. The non-target impacts of Met52, as applied for tick control, have not yet been assessed. A Before-After-Control-Impact experiment was conducted to assess the effects of Met52 on non-target arthropods in lawn and forest habitats typical of residential yards...
2017: PloS One
https://www.readbyqxmd.com/read/29153461/population-based-borrelia-burgdorferi-sensu-lato-seroprevalence-and-associated-risk-factors-in-finland
#7
Janko van Beek, Eeva Sajanti, Otto Helve, Jukka Ollgren, Mikko J Virtanen, Harri Rissanen, Outi Lyytikäinen, Jukka Hytönen, Jussi Sane
Lyme borreliosis (LB) is caused by Borrelia burgdorferi sensu lato (Bb-sl) and is the most common vector-borne disease in Europe. The objectives of this study were to determine the Bb-sl seroprevalence among the general Finnish adult population and to identify risk factors associated with Bb-sl-seropositive status. Two thousand sera from a nationwide health survey from 2011 were tested by whole-cell sonicate IgG ELISA, C6 peptide ELISA, and recomBead IgG 2.0 and test results were linked to a general health questionnaire...
November 11, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29150518/molecular-characterization-of-an-endozoicomonas-like-organism-causing-infection-in-king-scallop-pecten-maximus-l
#8
Irene Cano, Ronny van Aerle, Stuart Ross, David W Verner-Jeffreys, Richard K Paley, Georgina Rimmer, David Ryder, Patrick Hooper, David Stone, Stephen W Feist
One of the fastest growing fisheries in the UK is the king scallop Pecten maximus L., also currently rated as the second most valuable. Mass mortality events in scallops have been reported world-wide, often with the causative agent(s) remaining uncharacterized. In May 2013 and 2014, two mass mortality events affecting king scallops were recorded in the Lyme Bay Marine Protected Area (MPA), in South West England. Histopathological examination showed gill epithelial tissues infected with intracellular microcolonies of bacteria (IMC), resembling rickettsia-like organisms (RLOs), often with bacteria released in vascular spaces...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29149298/vector-borne-diseases-and-climate-change-a-european-perspective
#9
Jan C Semenza, Jonathan E Suk
Climate change has already impacted the transmission of a wide-range of vector-borne diseases in Europe, and it will continue to do so in the coming decades. Climate change has been implicated in the observed shift of ticks to elevated altitudes and latitudes, notably including the Ixodes ricinus tick species which is a vector for Lyme borreliosis and tick-borne encephalitis. Climate change is also thought to have been a factor in the expansion of other important disease vectors in Europe: Aedes albopictus (the Asian tiger mosquito), which transmits diseases such as Zika, dengue, and chikungunya, and Phlebotomus sandfly species, which transmits diseases including Leishmaniasis...
November 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29149281/seroreactivity-to-the-c6-peptide-in-borrelia-miyamotoi-infections-occurring-in-the-northeastern-united-states
#10
Phillip J Molloy, Karen E Weeks, Brittany Todd, Gary P Wormser
Background: There are no Food and Drug Administration (FDA) approved diagnostic tests for Borrelia miyamotoi infection, an emerging tick-borne illness in the United States. The purpose of this study was to evaluate whether the FDA-approved C6 peptide ELISA currently used to diagnose Lyme disease may potentially serve as a diagnostic test for B. miyamotoi infections. Methods: Serum specimens from 30 patients from the Northeastern United States with B. miyamotoi infection established by a polymerase chain reaction assay of a blood specimen were tested using the C6 ELISA...
November 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29137719/impact-of-patient-age-on-clinical-features-serologic-test-reactivity-and-long-term-outcome-of-culture-confirmed-early-lyme-disease
#11
Erica Weitzner, Paul Visintainer, Gary P Wormser
Whether age at time of diagnosis impacts the clinical presentation or long-term outcome of early Lyme disease is unknown. Subjects enrolled in this study had culture-confirmed early Lyme disease and were followed up annually in a long-term prospective study. Subjects ≤50years of age were compared with those who were ≥51years of age at time of study entry. Of the 283 enrolled subjects, the ≥51year old age group was significantly more likely to be female (P=0.0095) and to be compliant with long-term follow-up of at least 11years duration (P=0...
December 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29133662/a-tiny-tick-can-cause-a-big-health-problem
#12
Manuel John, M Raman, Keith Ryan
Ticks are tiny crawling bugs in the spider family that feed by sucking blood from animals. They are second only to mosquitoes as vectors of human disease, both infectious and toxic. Infected ticks spread over a hundred diseases, some of which are fatal if undetected. They spread the spirochete (which multiplies in the insect's gut) with a subsequent bite to the next host. We describe the only reported cases of peri ocular tick bite from India that presented to us within a span of 3 days and its management. Due suspicion and magnification of the lesions revealed the ticks which otherwise masqueraded as small skin tags/moles on gross examination...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29125008/does-more-favourable-handling-of-the-cerebrospinal-fluid-increase-the-diagnostic-sensitivity-of-borrelia-burgdorferi-sensu-lato-specific-pcr-in-lyme-neuroborreliosis
#13
Kristine J N Forselv, Åslaug R Lorentzen, Unn Ljøstad, Åse Mygland, Randi Eikeland, Vivian Kjelland, Sølvi Noraas, Hanne Quarsten
BACKGROUND: Tests for direct detection of Borrelia burgdorferi sensu lato (Bb) in Lyme neuroborreliosis (LNB) are needed. Detection of Bb DNA using PCR is promising, but clinical utility is hampered by low diagnostic sensitivity. We aimed to examine whether diagnostic sensitivity can be improved by the use of larger cerebrospinal fluid (CSF) volumes and faster handling of samples. METHODS: Patients who underwent CSF examination for LNB were included. We collected two millilitres of CSF for PCR analysis, extracted DNA from the pellets within 24 h and analysed the eluate by two real-time PCR protocols (16S rRNA and OspA)...
November 10, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/29120995/surveillance-for-lyme-disease-united-states-2008-2015
#14
Amy M Schwartz, Alison F Hinckley, Paul S Mead, Sarah A Hook, Kiersten J Kugeler
PROBLEM/CONDITION: Lyme disease is the most commonly reported vectorborne disease in the United States but is geographically focal. The majority of Lyme disease cases occur in the Northeast, mid-Atlantic, and upper Midwest regions. Lyme disease can cause varied clinical manifestations, including erythema migrans, arthritis, facial palsy, and carditis. Lyme disease occurs most commonly among children and older adults, with a slight predominance among males. REPORTING PERIOD: 2008-2015...
November 10, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/29116038/borrelia-burgdorferi-glycosaminoglycan-binding-proteins-a-potential-target-for-new-therapeutics-against-lyme-disease
#15
Yi-Pin Lin, Lingyun Li, Fuming Zhang, Robert J Linhardt
The spirochete bacterium Borrelia burgdorferisensu lato is the causative agent of Lyme disease, the most common vector-borne disease in Europe and the United States. The spirochetes can be transmitted to humans via ticks, and then spread to different tissues, leading to arthritis, carditis and neuroborreliosis. Although antibiotics have commonly been used to treat infected individuals, some treated patients do not respond to antibiotics and experience persistent, long-term arthritis. Thus, there is a need to investigate alternative therapeutics against Lyme disease...
November 8, 2017: Microbiology
https://www.readbyqxmd.com/read/29115676/lyme-disease-presenting-with-raeder-syndrome
#16
A Budhram, C Le, M E Jenkins
No abstract text is available yet for this article.
November 8, 2017: Headache
https://www.readbyqxmd.com/read/29113783/multiple-legumain-isoenzymes-in-ticks
#17
David Hartmann, Radek Šíma, Jitka Konvičková, Jan Perner, Petr Kopáček, Daniel Sojka
By searching nucleotide databases for the North American Lyme disease vector, Ixodes scapularis, we have complemented the previously characterized European Ixodes ricinus legumain IrAE1 with a full set of nine analogous genes (isae1-9). Six of these were PCR confirmed as genes present in all tick genomes tested. The absolute mRNA copy number examined by quantitative (q)PCR enabled expression profiling and an absolute comparison of mRNA levels for individual I. scapularis (Is)AEs in tick tissues. Four IsAEs (1, 2, 4, 9) were expressed solely in the gut and thus are proposed to be involved in host blood digestion...
November 4, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/29109071/health-information-seeking-patterns-of-the-general-public-and-indications-for-disease-surveillance-register-based-study-using-lyme-disease
#18
Samuli Pesälä, Mikko J Virtanen, Jussi Sane, Pekka Mustonen, Minna Kaila, Otto Helve
BACKGROUND: People using the Internet to find information on health issues, such as specific diseases, usually start their search from a general search engine, for example, Google. Internet searches such as these may yield results and data of questionable quality and reliability. Health Library is a free-of-charge medical portal on the Internet providing medical information for the general public. Physician's Databases, an Internet evidence-based medicine source, provides medical information for health care professionals (HCPs) to support their clinical practice...
November 6, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/29105221/analysis-of-recombinational-switching-at-the-antigenic-variation-locus-of-the-lyme-spirochete-using-a-novel-pacbio-sequencing-pipeline
#19
Theodore B Verhey, Mildred Castellanos, George Chaconas
The Lyme disease spirochete evades the host immune system by combinatorial variation of VlsE, a surface antigen. Antigenic variation occurs via segmental gene conversion from contiguous silent cassettes into the vlsE locus. Because of the high degree of similarity between switch variants and the size of vlsE, short-read NGS technologies have been unsuitable for sequencing vlsE populations. Here we use PacBio sequencing technology coupled with the first fully-automated software pipeline (VAST) to accurately process NGS data by minimizing error frequency, eliminating heteroduplex errors and accurately aligning switch variants...
November 4, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/29102094/early-disseminated-lyme-disease-masquerading-as-mononucleosis-a%C3%A2-case-report
#20
Richard Tumminello, Lindsey Glaspey, Anita Bhamidipati, Patrick Sheehan, Sundip Patel
BACKGROUND: Disseminated Lyme disease can be difficult to diagnose, as it begins with nonspecific signs and symptoms, which, if not treated correctly, can lead to atrioventricular conduction blocks and meningitis. In addition, the diagnosis can be further complicated by potentially false-positive test results. CASE REPORT: We report a case of early-disseminated Lyme disease presenting with Borrelia meningitis and concomitant Lyme carditis, which was misdiagnosed as mononucleosis...
October 25, 2017: Journal of Emergency Medicine
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