Borrelia burgdorferi IgM ELISA Kit (DEIA1975)

Regulatory status: For research use only, not for use in diagnostic procedures.

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serum, plasma, cerebrospinal fluid
Species Reactivity
Intended Use
The Borrelia burgdorferi IgM ELISA is a device for measurement of human anti-Borrelia burgdorferi-IgM-Antibodies in serum, plasma or cerebrospinal fluid.
Contents of Kit
1. Microtitrer plate
2. Wash buffer, 10X
3. Sample Diluent
4. Positive Control
5. Negative Control
6. HRP Conjugate
7. Substrate Solution
8. Stop Solution
For more detailed information, please download the following document on our website.


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Borrelia burgdorferi protein interactions critical for microbial persistence in mammals


Authors: Bernard, Quentin; Thakur, Meghna; Smith, Alexis A.; Kitsou, Chrysoula; Yang, Xiuli; Pal, Utpal

Borrelia burgdorferi is the causative agent of Lyme disease that persists in a complex enzootic life cycle, involving Ixodes ticks and vertebrate hosts. The microbe invades ticks and vertebrate hosts in spite of active immune surveillance and potent microbicidal responses, and establishes long-term infection utilising mechanisms that are yet to be unravelled. The pathogen can cause multi-system disorders when transmitted to susceptible mammalian hosts, including in humans. In the past decades, several studies identified a limited number of B. burgdorferi gene-products critical for pathogen persistence, transmission between the vectors and the host, and host-pathogen interactions. This review will focus on the interactions between B. burgdorferi proteins, as well as between microbial proteins and host components, protein and non-protein components, highlighting their roles in pathogen persistence in the mammalian host. A better understanding of the contributions of protein interactions in the microbial virulence and persistence of B. burgdorferi would support development of novel therapeutics against the infection.

Non-pathogenic Borrelia burgdorferi expressing Treponema pallidum TprK and Tp0435 antigens as a novel approach to evaluate syphilis vaccine candidates


Authors: Parveen, Nikhat; Fernandez, Mark C.; Haynes, Austin M.; Zhang, Rui-Li; Godornes, B. Charmie; Centurion-Lara, Arturo; Giacani, Lorenzo

Background: Syphilis is resurgent in many developed countries and still prevalent in developing nations. Current and future control campaigns would benefit from the development of a vaccine, but although promising vaccine candidates were identified among the putative surface-exposed integral outer membrane proteins of the syphilis spirochete, immunization experiments in the rabbit model using recombinant antigens have failed to fully protect animals upon infectious challenge. We speculated that such recombinant immunogens, purified under denaturing conditions from Escherichia coli prior to immunization might not necessarily harbor their original structure, and hypothesized that enhanced protection would result from performing similar immunization/challenge experiments with native antigens. Methods: To test our hypothesis, we engineered non-infectious Borrelia burgdorferi strains to express the tp0897 (tprK) and tp0435 genes of Treponema pallidum subsp. pallidum and immunized two groups of rabbits by injecting recombinant strains intramuscularly with no adjuvant. TprK is a putative integral outer membrane protein of the syphilis agent, while tp0435 encodes the highly immunogenic T. pallidum 17-kDa lipoprotein, a periplasmic antigen that was also shown on the pathogen surface. Following development of a specific host immune response to these antigens as the result of immunization, animals were challenged by intradermal inoculation of T. pallidum. Cutaneous lesion development was monitored and treponemal burden within lesions were assessed by dark-field microscopy and RT-qPCR, in comparison to control rabbits. Results: Partial protection was observed in rabbits immunized with B. burgdorferi expressing TprK while immunity to Tp0435 was not protective. Analysis of the humoral response to TprK antigen suggested reactivity to conformational epitopes. Conclusions: Immunization with native antigens might not be sufficient to obtain complete protection to infection. Nonetheless we showed that non-infectious B. burgdorferi can be an effective carrier to deliver and elicit a specific host response to T. pallidum antigens to assess the efficacy of syphilis vaccine candidates. (C) 2019 Elsevier Ltd. All rights reserved.

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