We studied 48 Borrelia isolates that were associated with Lyme borreliosis or were isolated from ticks and identified three DNA relatedness groups by using the S1 nuclease method. The three DNA groups (genospecies) were associated with specific rRNA gene restriction patterns, protein electrophoresis patterns, and patterns of reactivity with murine monoclonal antibodies. Genospecies I correspond...

The aim of our studies was to invent a reliable method for detection of the bactericidal activity of disinfectants against Borrelia burgdorferi in suspension (in vitro) and in cell line cultures (in vivo). In the suspension method, 0.01% octenidine at 20°C and 35°C was bactericidal to Borrelia afzeli; Borrelia garini, B. burgdorferi sensu stricto after 5 minutes treatment. Increase of the tempe...

The tick-borne disease found in Brazil, initially discovered in 1992, has been named Lyme Disease like syndrome (LDLS), because the clinical manifestations are similar with those observed in the Northern hemisphere, but the etiological agent was never isolated and polymerase chain reactions (PCR) with specific or broad recognizing primers of genera Borrelia were always negative in patients and ...

Abstract In the present study, effectiveness of six antimicrobial agents have been tested against 24 borrelia strains isolated from Ixodes ricinus ticks (11 Borrelia lusitaniae , eight afzelii three garinii and two valaisiana ) one B. strain human skin. The minimum inhibitory concentration range was as follows: amoxicillin, 0.125–2 mg/L; doxycycline, 0.125–1 mg/L, ceftriaxone, 0.016–0.063 cefur...

Lyme disease Borrelia are invasive, nontoxigenic, persistent pathogens, and little is known about their mechanisms of pathogenesis. In our laboratory, a signature-tagged mutagenesis (STM) library of over 4,000 Borrelia burgdorferi transposon mutants has been constructed and is being screened for infectivity in mice. In this manner, a global view of the virulence determinants (factors required f...

background: endemic relapsing fever remains under diagnosed in our area according to a low index of suspicion among clinicians, as well as its difficult diagnosis. the goal of this study was to present the epidemiological aspects of the disease in western iran. methods: in this analytical-descriptive cross-sectional study, the epidemiological and clinical aspects of relapsing fever were investi...

to carry out the immunological experiments on the serum of multiple sclerosis (ms) patients, based on a correlation between borrelia burgdorferi infection and contracting ms autoimmune disease the outer surface protein d (ospd) of the bacterium was expressed and purified. a clone containing the ospd gene in pet11a expression vector under the control of t7 promoter was transformed to the bacteri...

Objective: We examined the blood of 48 North American Chronic Fatigue Syndrome (CFS) patients subsequently diagnosed with Lyme Disease Borrelia burgdorferi and compared these to 50 North American CFS patients without evidence of Borrelia burgdorferi infections for presence of Mycoplasma spp. co-infections using forensic polymerase chain reaction. Results: We found that 68.75% of CFS/Lyme patien...