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Søgeord (borrelia) valgt.
12 emner vises.
Paola Cantero, Laurence Ehret-Sabatier, Cédric Lenormand, Yves Hansmann, Erik Sauleau, Laurence Zilliox, Benoit Westermann, Benoit Jaulhac, Didier Mutter, Cathy Barthel, Pauline Perdu-Alloy, Martin Martinot, Dan Lipsker, Nathalie Boulanger
Clinical Microbiology and Infection, 23.10.2024
Tilføjet 23.10.2024
We have developed targeted proteomics in the context of Lyme borreliosis as a new direct diagnostic tool for detecting Borrelia proteins in the skin of patients with erythema migrans. If satisfactory, this proteomic technique could be used in addition to culture and/or PCR for disseminated infections, where Borrelia detection is essential to demonstrate active infection. In these infections, diagnosis is indirect and relies mainly on serology.
Læs mere Tjek på PubMedAnnabelle Pfeifle Wanyue Zhang Jingxin Cao Sathya N. Thulasi Raman Rose Anderson-Duvall Levi Tamming Caroline Gravel Heather Coatsworth Wangxue Chen Michael J. W. Johnston Simon Sauve Michael Rosu-Myles Lisheng Wang Xuguang Li a Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, Canadab Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canadac National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Canadad Human Health Therapeutics Research Center, National Research Council of Canada, Ottawa, Canadae Department of Chemistry, Carleton University, Ottawa, Canada
Emerg Microbes Infect, 12.10.2024
Tilføjet 12.10.2024
Infection, 2.10.2024
Tilføjet 2.10.2024
Abstract Background Lyme borreliosis is one of the most prevalent tick-borne diseases in Europe. Studies on seroprevalence of Borrelia burgdorferi IgG antibodies in children are rare. The aim of this study was to determine the seroprevalence of B. burgdorferi IgG antibodies in children and adolescents residing in North-Western Switzerland and neighbouring countries. Methods Prospective cross-sectional observational single-centre study using left-over plasma of asymptomatic paediatric patients. Included were children aged 1–17 years living in North-Western Switzerland and bordering areas of France and Germany. Excluded were children with symptoms of Lyme borreliosis or a chronic disease possibly affecting plasma antibodies (immunodeficiency syndrome, systemic lupus erythematosus) or with such medication (e.g., intravenous immunoglobuline treatment, allogenic stem cell transplantation, immunosuppressive treatment) as well as refugees seeking asylum. IgG antibodies against B. burgdorferi were measured by ELISA and positive or borderline results by line blot. Positivity was defined as scenario 1: ELISA positive/line blot positive or borderline OR ELISA borderline/line blot positive. Scenario 2: ELISA positive or borderline/line blot positive. A multivariable logistic regression model for seropositivity was applied. Results 962 children were included (mean age 9.63 years, standard deviation 5.01, 54.5% males). Seroprevalence for scenario 1 was 13.3% (95% CI: 11.2–15.6) and for scenario 2 11.2% (95% CI: 9.3–13.4). Seroprevalence (scenario 1) was comparable for age groups, sex and rural versus urban residence. Conclusion This study shows an increased seroprevalence for B. burgdorferi in the paediatric age compared to previous childhood studies. We also found an increased risk for B. burgdorferi infection at young age.
Læs mere Tjek på PubMedMartin Strnad, Marie Vancová, Ryan O.M. Rego
Trends in Microbiology, 28.09.2024
Tilføjet 28.09.2024
Borrelia (Borreliella) burgdorferi is a bacterial pathogen transmitted by hard ticks of the genus Ixodes; it circulates in nature, through an enzootic cycle, between the ticks and a range of vertebrates that act as reservoirs. It is the causative agent of Lyme disease (LD)/Lyme borreliosis in humans, which is the fastest expanding vector-borne disease in the Northern Hemisphere. Borrelia spirochetes are flat wave in appearance with an undulating cell morphology. B. burgdorferi has a bundle of 7–11 helically shaped periplasmic flagella attached at each end of the cell cylinder.
Læs mere Tjek på PubMedInfection, 26.09.2024
Tilføjet 26.09.2024
Abstract Background Lyme borreliosis is one of the most prevalent tick-borne diseases in Europe. Studies on seroprevalence of Borrelia burgdorferi IgG antibodies in children are rare. The aim of this study was to determine the seroprevalence of B. burgdorferi IgG antibodies in children and adolescents residing in North-Western Switzerland and neighbouring countries. Methods Prospective cross-sectional observational single-centre study using left-over plasma of asymptomatic paediatric patients. Included were children aged 1–17 years living in North-Western Switzerland and bordering areas of France and Germany. Excluded were children with symptoms of Lyme borreliosis or a chronic disease possibly affecting plasma antibodies (immunodeficiency syndrome, systemic lupus erythematosus) or with such medication (e.g., intravenous immunoglobuline treatment, allogenic stem cell transplantation, immunosuppressive treatment) as well as refugees seeking asylum. IgG antibodies against B. burgdorferi were measured by ELISA and positive or borderline results by line blot. Positivity was defined as scenario 1: ELISA positive/line blot positive or borderline OR ELISA borderline/line blot positive. Scenario 2: ELISA positive or borderline/line blot positive. A multivariable logistic regression model for seropositivity was applied. Results 962 children were included (mean age 9.63 years, standard deviation 5.01, 54.5% males). Seroprevalence for scenario 1 was 13.3% (95% CI: 11.2–15.6) and for scenario 2 11.2% (95% CI: 9.3–13.4). Seroprevalence (scenario 1) was comparable for age groups, sex and rural versus urban residence. Conclusion This study shows an increased seroprevalence for B. burgdorferi in the paediatric age compared to previous childhood studies. We also found an increased risk for B. burgdorferi infection at young age.
Læs mere Tjek på PubMedFrederick J. Angulo, Emily Colby, Anne-Mette Lebech, Per-Eric Lindgren, Anna Moniuszko-Malinowska, Franc Strle, Julia Olsen, Gordon Brestrich, Andrew Vyse, Madiha Shafquat, L. Hannah Gould, Patrick H. Kelly, Andreas Pilz, Kate Halsby, Jennifer C. Moïsi, James H. Stark
International Journal of Infectious Diseases, 20.09.2024
Tilføjet 20.09.2024
Lyme borreliosis (LB), an infection caused by the spirochete Borrelia burgdorferi sensu lato complex (Bbsl), is the most common tick-borne disease in Europe [1]. Although LB commonly presents as erythema migrans (EM), Bbsl infection can disseminate resulting in Lyme neuroborreliosis (LNB), arthritis, or carditis [1].
Læs mere Tjek på PubMedAshley M. GroshongNora E. GibbonsBrendan P. MooreWilliam T. BellamyJon S. Blevins1Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA2Department of Medicine, UConn Health, Farmington, Connecticut, USA3Laboratory of Bacteriology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA4Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USAGuy H. Palmer
Infection and Immunity, 10.08.2024
Tilføjet 10.08.2024
Infection, 10.07.2024
Tilføjet 10.07.2024
Abstract Purpose Diagnosis of (European) Lyme neuroborreliosis has been based on clinical presentation, cerebrospinal fluid (CSF) pleocytosis and demonstration of intrathecal borrelial antibody synthesis (ITBAS) to document Borrelia burgdorferi s. l. infection. It is not known if other criteria to document Borrelia infection may contribute to the diagnosis. Methods We compared the sensitivity of three individual criteria (ITBAS, CSF Borrelia culture, and the presence of erythema migrans [EM]) to confirm the diagnosis of early Lyme neuroborreliosis in 280 patients ≥ 15 years of age evaluated at a Lyme borreliosis outpatient clinic in Slovenia. The patients had either radicular pain of new onset or involvement of a cranial nerve but without radicular pain, each in conjunction with CSF pleocytosis. Evaluation was of patients who had each of the three confirmatory criteria assessed, and for whom at least one criterion was positive. Results Analysis of 280 patients, 120 women and 160 men, median age 57 (range 15–84) years, revealed that ITBAS was the most frequently observed positive criterion (85.4%), followed by EM (52.9%), and by a positive CSF Borrelia culture (9.6%). Of the 280 patients, 154 (55%) met only one criterion (43.2% ITBAS only, 10.7% EM only, and 1.1% positive CSF culture only), whereas 42.1% met two criteria. Only 2.9% of patients were positive by all three criteria. Conclusion Although ITBAS was the most frequent criterion for confirmation for Borrelia infection, the presence of EM alone confirmed an additional 10.7% of patients and a positive CSF Borrelia culture alone added another 1.1%.
Læs mere Tjek på PubMedInfection, 9.07.2024
Tilføjet 9.07.2024
Abstract Purpose Diagnosis of (European) Lyme neuroborreliosis has been based on clinical presentation, cerebrospinal fluid (CSF) pleocytosis and demonstration of intrathecal borrelial antibody synthesis (ITBAS) to document Borrelia burgdorferi s. l. infection. It is not known if other criteria to document Borrelia infection may contribute to the diagnosis. Methods We compared the sensitivity of three individual criteria (ITBAS, CSF Borrelia culture, and the presence of erythema migrans [EM]) to confirm the diagnosis of early Lyme neuroborreliosis in 280 patients ≥ 15 years of age evaluated at a Lyme borreliosis outpatient clinic in Slovenia. The patients had either radicular pain of new onset or involvement of a cranial nerve but without radicular pain, each in conjunction with CSF pleocytosis. Evaluation was of patients who had each of the three confirmatory criteria assessed, and for whom at least one criterion was positive. Results Analysis of 280 patients, 120 women and 160 men, median age 57 (range 15–84) years, revealed that ITBAS was the most frequently observed positive criterion (85.4%), followed by EM (52.9%), and by a positive CSF Borrelia culture (9.6%). Of the 280 patients, 154 (55%) met only one criterion (43.2% ITBAS only, 10.7% EM only, and 1.1% positive CSF culture only), whereas 42.1% met two criteria. Only 2.9% of patients were positive by all three criteria. Conclusion Although ITBAS was the most frequent criterion for confirmation for Borrelia infection, the presence of EM alone confirmed an additional 10.7% of patients and a positive CSF Borrelia culture alone added another 1.1%.
Læs mere Tjek på PubMedLuo, S., Bao, F., Wu, H., Ma, W., Zhu, L., Huang, X., Yang, R., Peng, L., Gao, L., Wu, X., Zhong, L., Dong, Y., Li, B., Ma, W., Liu, A.
BMJ Open, 11.06.2024
Tilføjet 11.06.2024
Introduction Ixodes ticks are pivotal in transmitting diseases like Lyme disease and human granulocytic anaplasmosis, caused by Borrelia burgdorferi and Anaplasma phagocytophilum, respectively. These pathogens not only affect humans through single or multiple tick bites but also pose risks to animal hosts, leading to potential coinfections. Despite regional studies indicating significant prevalence, their global coinfection data remain sparse. This study aims to bridge this gap through a systematic review and meta-analysis of B. burgdorferi and A. phagocytophilum coinfections in Ixodes ticks worldwide. Addressing data limitations and study variability, it seeks to provide a nuanced understanding of coinfection patterns, their epidemiological implications and inform targeted prevention strategies. Methods and analysisFollowing Preferred Reporting Items for Systematic Review and Meta-analysis Protocols 2015 guidelines and PROSPERO registration, this study will undertake a thorough database search without constraints on language or publication date, using standardised screening and data extraction protocols. The quality and bias of studies will be evaluated using Joanna Briggs Institute tools. In the statistical analysis phase, conducted in R, we will initially determine the use of fixed or random-effects models based on the assessment of data heterogeneity. This choice will guide the framework for subsequent analyses. Within the selected model’s framework, we will perform subgroup analyses and meta-regression to investigate the effects of various factors, ensuring that each step is tailored to the initial model selection to maintain analytical consistency. Ethics and disseminationAs this study does not involve clinical research or data collection from subjects, ethical approval is not required. We will uphold ethical standards in synthesising and reporting data. Study outcomes will be published in peer-reviewed journals, communicating findings to the scientific community and contributing to the understanding of Ixodes tickborne diseases. PROSPERO registration numberCRD42023449735.
Læs mere Tjek på PubMedTian Tang, Ying Zhu, Yuan-Yuan Zhang, Jin-Jin Chen, Jian-Bo Tian, Qiang Xu, Bao-Gui Jiang, Guo-Lin Wang, Nick Golding, Max L Mehlman, Chen-Long Lv, Simon I Hay, Li-Qun Fang, Wei Liu
Lancet Microbe, 16.05.2024
Tilføjet 16.05.2024
The predicted high-risk regions are considerably larger than in previous reports. Identification, surveillance, and diagnosis of RFGB infections should be prioritised in high-risk areas, especially within low-income regions.
Læs mere Tjek på PubMedTian Tang, Ying Zhu, Yuan-Yuan Zhang, Jin-Jin Chen, Jian-Bo Tian, Qiang Xu, Bao-Gui Jiang, Guo-Lin Wang, Nick Golding, Max L Mehlman, Chen-Long Lv, Simon I Hay, Li-Qun Fang, Wei Liu
Lancet Microbe, 8.05.2024
Tilføjet 8.05.2024
The predicted high-risk regions are considerably larger than in previous reports. Identification, surveillance, and diagnosis of RFGB infections should be prioritised in high-risk areas, especially within low-income regions.
Læs mere Tjek på PubMed