Identification of a defined linear epitope in the OspA protein of the Lyme disease spirochetes that elicits bactericidal antibody responses: Implications for vaccine development.

Identification of a defined linear epitope in the OspA protein of the Lyme disease spirochetes that elicits bactericidal antibody responses: Implications for vaccine development. Vaccine. 2017 May 04;: Authors: Izac JR, Oliver LD, Earnhart CG, Marconi RT Abstract The lipoprotein OspA is produced by the Lyme disease spirochetes primarily in unfed ticks. OspA production is down-regulated by the blood meal and it is not produced in mammals except for possible transient production during late stage infection in patients with Lyme arthritis. Vaccination with OspA elicits antibody (Ab) that can target spirochetes in the tick midgut during feeding and inhibit transmission to mammals. OspA was the primary component of the human LYMErix™ vaccine. LYMErix™ was available from 1998 to 2002 but then pulled from the market due to declining sales as a result of unsubstantiated concerns about vaccination induced adverse events and poor efficacy. It was postulated that a segment of OspA that shares sequence similarity with a region in human LFA-1 and may trigger putative autoimmune events. While evidence supporting such a link has not been demonstrated, most efforts to move forward with OspA as a vaccine component have sought to eliminate this region of concern. Here we identify an OspA linear epitope localized within OspA amino acid residues 221-240 (OspA221-240) that lacks the OspA region suggested to elicit autoimmunity. A peptide consisting of residues 22...
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research

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Amy B. Scher’s “This Is How I Save My Life” is the true story of a fiery young woman diagnosed with late-stage, chronic Lyme disease whose journey takes her from near-death in California to a trip around the world in search of her ultimate salvation. This excerpt coincides with the book’s release in paperback from Gallery Books, an imprint CBS sister company Simon &Schuster. I am twenty-eight years old when I arrive in magnificent India. I am here with my parents, an updated vaccine record, and a visa, searching for something I cannot find at home: a cure. In a tiny hospital on the outskirts of ...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Health Simon and Schuster Source Type: news
Patient Presentation A 9-year-old male came to clinic with a 1 month history of painful joint swelling. One month ago he started having right ankle pain that was intermittent but consistent. One day ago his right wrist, right ankle and bilateral knees had some swelling but no erythema or warmth. He says that he has pain in them when he moves but not when he is resting and he denies any joint stiffness or gelling. He also had 1-2 days of multiple red skin lesions on his extremities and trunk, not overlying the affected joints. The skin lesions do not come and go and do not itch. They are mainly discrete circular lesions wi...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
Abstract 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. Eicosanoids are powerful lipid mediators of inflammation and are known to regulate multiple asp...
Source: Biochimie - Category: Biochemistry Authors: Tags: Biochimie Source Type: research
No abstract available
Source: Lippincott's Bone and Joint Newsletter - Category: Orthopaedics Tags: Snapshot Source Type: news
ConclusionSystemic autoimmune joint diseases (i.e., RA, PsA, SpA) may follow Lyme disease. Development of polyarthritis after antibiotic‐treated EM, previous psoriasis, or low‐titer B burgdorferi antibodies may provide insight into the correct diagnosis.
Source: Arthritis and Rheumatism - Category: Rheumatology Authors: Tags: Lyme Disease Source Type: research
SPECIAL FROM Next Avenue Whether it came on suddenly when you were playing tennis or more gradually over many years, knee pain can keep you from doing even the most basic of activities. At the very least, it can limit your ability to move as easily or quickly, or sit in one place for an extended time.   Arthritis is the most common cause of knee pain for older adults, said Dr. Julie Switzer, an orthopedic surgeon at Regions Hospital in St. Paul, Minn. Arthritis comes in three main forms, she said: osteoarthritis, inflammatory arthritis and post-traumatic arthritis. We’ll examine these types, as well as other ...
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(MedPage Today) -- Persistent joint symptoms may represent a new-onset autoimmune disease
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Conclusion: Systemic autoimmune joint diseases, RA, PsA/SpA, may follow Lyme disease. Development of polyarthritis after antibiotic‐treated erythema migrans, previous psoriasis, or low‐titer B. burgdorferi antibodies are clues to the correct diagnosis. This article is protected by copyright. All rights reserved.
Source: Arthritis and Rheumatism - Category: Rheumatology Authors: Tags: Full Length Source Type: research
Growing up a musically-obsessed child in the 80's, Daryl Hall was one of my biggest inspirations. A masterful, inventive songwriter with an ocean of soul, he set me on the path to being an artist, to never waste a word, and to sing because I mean it. With six number ones and five additional top ten hits throughout the 70's and 80's Daryl Hall and John Oates are the number one duo in music history. Still at the top of his game at 69 years old, Daryl has won legions of new fans with his hit MTV Live show Live From Daryl's House. In February of 2015, at my very sickest from chronic Lyme and Bartonella, after it was missed b...
Source: Science - The Huffington Post - Category: Science Source Type: news
ConclusionWe identified restriction and clonotypic expansions in the JIA Treg cell repertoire with sharing of Treg cell clonotypes across patients. These findings suggest that abnormalities in the Treg cell repertoire, possibly engendered by shared antigenic triggers, may contribute to disease pathogenesis in JIA.
Source: Arthritis and Rheumatism - Category: Rheumatology Authors: Tags: Pediatric Rheumatology Source Type: research
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