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https://www.readbyqxmd.com/read/29117430/biological-false-positive-venereal-disease-research-laboratory-test-in-cerebrospinal-fluid-in-the-diagnosis-of-neurosyphilis-a-case-control-study
#1
S Zheng, R J Lin, Y H Chan, Ccl Ngan
BACKGROUND: There is no clear consensus on the diagnosis of neurosyphilis. The Venereal Disease Research Laboratory (VDRL) test from cerebrospinal fluid (CSF) has traditionally been considered the gold standard for diagnosing neurosyphilis, but is widely known to be insensitive. OBJECTIVE: In this study, we compared the clinical and laboratory characteristics of true positive VDRL-CSF cases with biological false positive VDRL-CSF cases. METHODS: We retrospectively identified cases of true and false positive VDRL-CSF across a 3-year period received by the Immunology and Serology Laboratory, Singapore General Hospital...
November 8, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29116294/secondary-syphilis-presenting-as-leucoderma-syphiliticum-case-report-and-review
#2
Walter de Araujo Eyer-Silva, Carlos José Martins, Guilherme Almeida Rosa da Silva, Giresse Acakpovi, Jorge Francisco da Cunha Pinto
Leucoderma syphiliticum (LS), originally described as syphilide pigmentaire, encompasses a spectrum of dyschromic lesions that emerge during the course of secondary syphilis. Very few case reports are available in modern biomedical databases. We present the case of a 57-year-old HIV-infected male patient who presented with several round to oval, non-scaling, slightly raised and well-demarcated hypochromic lesions scattered over the trunk, abdomen, dorsum, and arms. Prior non-treponemal tests were negative for syphilis, but novel studies yielded positive results at high titers...
November 6, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/29073145/the-cost-and-cost-effectiveness-of-rapid-testing-strategies-for-yaws-diagnosis-and-surveillance
#3
Christopher Fitzpatrick, Kingsley Asiedu, Anita Sands, Tita Gonzalez Pena, Michael Marks, Oriol Mitja, Filip Meheus, Patrick Van der Stuyft
BACKGROUND: Yaws is a non-venereal treponemal infection caused by Treponema pallidum subspecies pertenue. The disease is targeted by WHO for eradication by 2020. Rapid diagnostic tests (RDTs) are envisaged for confirmation of clinical cases during treatment campaigns and for certification of the interruption of transmission. Yaws testing requires both treponemal (trep) and non-treponemal (non-trep) assays for diagnosis of current infection. We evaluate a sequential testing strategy (using a treponemal RDT before a trep/non-trep RDT) in terms of cost and cost-effectiveness, relative to a single-assay combined testing strategy (using the trep/non-trep RDT alone), for two use cases: individual diagnosis and community surveillance...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29053397/combined-intravitreal-and-systemic-antibiotic-therapy-in-a-patient-with-syphilitic-uveitis
#4
Arjun B Sood, William A Pearce, Kimberly A Workowski, James Lockwood, Steven Yeh
PURPOSE: To report the novel use of combined intravitreal and systemic antibiotic therapy in a patient with syphilitic panuveitis and discuss the management of ocular syphilis. METHODS: Case report Results: A 45-year old heterosexual male with human immunodeficiency virus (HIV) presented with 1 month of blurry vision in both eyes. Clinical examination revealed a bilateral panuveitis. The patient denied history of genital lesions or rash, but did complain of difficulty hearing bilaterally...
October 20, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29046410/correlation-of-treponemal-immunoassay-signal-strength-values-with-reactivity-of-confirmatory-treponemal-testing
#5
Yetunde F Fakile, Heather Jost, Karen W Hoover, Kathleen J Gustafson, Susan M Novak-Weekley, Jeff M Schapiro, Anthony Tran, Joan M Chow, Ina U Park
Automated treponemal immunoassays are used for syphilis screening with the reverse sequence algorithm; discordant results (e.g., enzyme immunoassay [EIA]-reactive, reactive plasma reagin [RPR]-non-reactive) are resolved with a second treponemal test. We conducted a study to determine automated immunoassay signal strength values consistently correlating with reactive confirmatory treponemal testing.We conducted a cross-sectional analysis of four automated immunoassays: BioPlex 2200 microbead immunoassay (MBIA), LIAISON chemiluminesence immunoassay (CIA), ADVIA-Centaur CIA, and TrepSure EIA, and three manual assays: Treponema Pallidum Particle Agglutination (TP-PA), Fluorescent Treponemal Antibody-Absorption (FTA-ABS) test, INNO-LIA line immunoassay...
October 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29046409/using-treponemal-assay-signal-strength-cut-off-ratios-to-predict-syphilis-infection
#6
Claire C Bristow, Jeffrey D Klausner
Syphilis screening using the reverse algorithm, a treponemal test for screening followed by a non-treponemal test if reactive, is increasingly being used. This algorithm has several advantages including use of an automated screening test, saving on laboratory time and costs as well as detection of very early syphilis infection. However, under this algorithm, in situations where the treponemal result is positive and the non-treponemal result is non-reactive a second treponemal test must be performed, which may actually lead to inefficiencies in the laboratory...
October 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29030100/antimicrobial-susceptibility-profiles-of-oral-treponema-species
#7
Kazuko Okamoto-Shibayama, Jin Sekino, Kouki Yoshikawa, Atsushi Saito, Kazuyuki Ishihara
Treponemes occur in the microflora of the dental plaque. Certain Treponema species that are frequently isolated from chronic periodontitis lesions are involved in its initiation and progression. In addition to mechanical instrumentation, antimicrobial agents are used as an adjunctive treatment modality for periodontitis. Despite its importance for successful antimicrobial treatment, information about susceptibility is limited for Treponema species. The aim of this study was to assess the susceptibility of Treponema denticola strains, Treponema socranskii, and Treponema vincentii to eleven antimicrobial agents...
October 13, 2017: Anaerobe
https://www.readbyqxmd.com/read/29021404/sex-differences-in-the-significance-of-isolated-reactive-treponemal-chemiluminescence-immunoassay-results
#8
Rohan I Bopage, Ute Vollmer-Conna, Antonia W Shand, Jeffrey John Post
OBJECTIVES: The significance of sera with isolated reactive treponemal chemiluminescence immunoassay (IRTCIA) results is unclear. Women have this phenotype more commonly than men. Most cohorts examining this phenotype have included predominantly men and have demonstrated evidence of past or subsequently confirmed syphilis infection in a significant proportion of cases. We hypothesised that a proportion of sera with IRTCIA results would be positive on immunoblot testing and that sera from women with IRTCIA would have different results in immunoblot testing than men...
October 11, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28978606/sclerokeratouveitis-and-lens-dislocation-in-a-patient-with-genital-ulcer-was-the-great-imitator-imitated
#9
Anubha Rathi, Brijesh Takkar, Namrata Sharma
Uveitis is the most common ocular manifestation of syphilis, while scleritis is rare. A case of nodular scleritis, peripheral keratitis and uveitis in a patient with genital ulcer is presented in this report. This patient had a clinical profile suggestive of syphilis, though the serology was negative for treponemal antibodies. Other possible differential diagnosis imitating syphilis are discussed.
October 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28886021/complete-genome-sequences-of-two-strains-of-treponema-pallidum-subsp-pertenue-from-ghana-africa-identical-genome-sequences-in-samples-isolated-more-than-7-years-apart
#10
Michal Strouhal, Lenka Mikalová, Pavla Havlíčková, Paolo Tenti, Darina Čejková, Ivan Rychlík, Sylvia Bruisten, David Šmajs
BACKGROUND: Treponema pallidum subsp. pertenue (TPE) is the causative agent of yaws, a multi-stage disease, endemic in tropical regions of Africa, Asia, Oceania, and South America. To date, four TPE strains have been completely sequenced including three TPE strains of human origin (Samoa D, CDC-2, and Gauthier) and one TPE strain (Fribourg-Blanc) isolated from a baboon. All TPE strains are highly similar to T. pallidum subsp. pallidum (TPA) strains. The mutation rate in syphilis and related treponemes has not been experimentally determined yet...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28878003/evaluation-of-the-lumipulse-g-tp-n-chemiluminescent-immunoassay-as-a-syphilis-screening-test
#11
Daniel A Ortiz, Michael J Loeffelholz
A syphilis diagnosis is often aided by the detection of treponemal and nontreponemal antibodies. Automated treponemal antibody detection systems enable high-volume clinical laboratories to perform syphilis screening at a faster pace with lower labor costs. The Lumipulse G TP-N chemiluminescent immunoassay is an automated system that qualitatively detects IgG and IgM antibodies against Treponema pallidum antigens in human serum and plasma. To assess performance characteristics and workflow efficiency, the Lumipulse G TP-N assay was compared to the Bioplex 2200 Syphilis IgG multiplex flow immunoassay...
November 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28876300/what-is-the-role-of-paired-rapid-plasma-reagin-testing-simultaneous-testing-of-acute-and-convalescent-samples-in-the-diagnosis-of-repeat-syphilis-and-the-follow-up-of-syphilis
#12
Chris R Kenyon, Kara Krista Osbak, Marjan Van Esbroek, Lutgarde Lynen, Tania Crucitti
BACKGROUND: Repeat syphilis is playing an increasing role in syphilis transmission in several populations. The assessment of repeat syphilis and response to treatment depends on accurately measuring intraindividual changes in non-treponemal tests. For a 0- to 6-month delta rapid plasma reagin (RPR) to be determined by routine individual RPR testing, samples are tested 6 months apart with differences in reagent batches, environmental conditions, and observers all leading to measurement errors...
July 20, 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28856228/traditional-versus-reverse-syphilis-algorithms-a-comparison-at-a-large-academic-medical-center
#13
Craig D Dunseth, Bradley A Ford, Matthew D Krasowski
OBJECTIVES: An increasing number of institutions are transitioning from the traditional syphilis testing algorithm (initial screening with nontreponemal tests) to the 'reverse' algorithm (initial screening with treponemal tests such as syphilis IgG). The aim of this study was to evaluate the switch in syphilis algorithm at an academic medical center with a population with low syphilis prevalence. DESIGN AND METHODS: We performed a six-year retrospective study at the University of Iowa Hospitals and Clinics, an academic medical center, comparing the traditional algorithm (n=12,612) with the reverse algorithm (n=10,453)...
August 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28844341/comparing-three-treponemal-tests-for-syphilis-screening
#14
Sean A Buono, Hilary A Godwin, Nicole M Green
We compared the performance and ease of use for three high-throughput treponemal immunoassays: Phoenix Biotech Trep-Sure Total Antibody EIA, Siemens ADVIA® Centaur Syphilis Assay, and DiaSorin LIAISON® Treponema Assay. One thousand serum samples submitted for routine screening were used in this study. Each assay demonstrated comparable sensitivity, specificity, and percent agreement (98-100%) compared with Treponema pallidum particle agglutination (TP-PA). Thus, treponemal immunoassays are an acceptable alternative for syphilis screening or confirmatory testing...
November 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28840989/comparison-of-traditional-and-reverse-syphilis-screening-algorithms-in-medical-health-checkups
#15
Eun Hee Nah, Seon Cho, Suyoung Kim, Han Ik Cho, Jong Yil Chai
BACKGROUND: The syphilis diagnostic algorithms applied in different countries vary significantly depending on the local syphilis epidemiology and other considerations, including the expected workload, the need for automation in the laboratory and budget factors. This study was performed to investigate the efficacy of traditional and reverse syphilis diagnostic algorithms during general health checkups. METHODS: In total, 1,000 blood specimens were obtained from 908 men and 92 women during their regular health checkups...
November 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28820347/association-between-eye-diagnosis-and-positive-syphilis-test-results-in-a-large-urban-sexually-transmitted-infection-primary-care-clinic-population
#16
Ann-Marie Lobo, Yan Gao, Laura Rusie, Magda Houlberg, Supriya D Mehta
In 2015, the Centers for Disease Control and Prevention (CDC) and the American Academy of Ophthalmology (AAO) released clinical advisories on rising cases of ocular syphilis. We examined the association between eye disease and syphilis infection among primary care and sexually transmitted infection (STI) clinic patients attending an urban lesbian, gay, bisexual, transgender (LGBT) health center. We conducted a retrospective medical record review of all patients who underwent syphilis testing at Howard Brown Health between 1 January 2010 and 31 December 2015...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28792374/evaluation-of-an-automated-quantitative-latex-immunoturbidimetric-non-treponemal-assay-for-diagnosis-and-follow-up-of-syphilis-a-prospective-cohort-study
#17
Kara Osbak, Said Abdellati, Achilleas Tsoumanis, Marjan Van Esbroeck, Luc Kestens, Tania Crucitti, Chris Kenyon
PURPOSE: We evaluated the Sekure rapid plasma reagin (RPR-S) (Sekisui Diagnostics) automated quantitative latex immunoturbidimetric assay performed on the SK500 clinical chemistry system for clinical appropriateness. METHODOLOGY: Syphilis-infected individuals and controls were recruited into a prospective cohort study conducted at a sexually transmitted infection clinic in Antwerp, Belgium. Sera collected at diagnosis (baseline) and at 3, 6, 9 and 12 months post-treatment were tested with RPR-S and Macro-Vue RPR card (RPR-C) (Becton Dickinson) assays; RPR-C was considered the reference test...
August 10, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28728181/the-value-of-diagnostic-work-up-in-the-evaluation-of-white-dot-syndromes
#18
MULTICENTER STUDY
Neal V Palejwala, Gagan Sawhney, Matthew Raecker, Chrstina J Flaxel, Steven Yeh
BACKGROUND AND OBJECTIVE: To determine the diagnostic yield of systemic work-up in white dot syndromes. PATIENTS AND METHODS: A retrospective chart review. RESULTS: Eighty-six consecutive patients with a diagnosis of a white dot syndrome were identified. Forty-three had a diagnosis of birdshot chorioretinopathy. Overall, 395 diagnostic tests were performed with a diagnostic yield of 11.9%. The test with the greatest diagnostic yield was HLA-A29 typing (89%)...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28653418/syphilis-testing-practices-in-the-americas
#19
Thuy T Trinh, Mary L Kamb, Minh Luu, D Cal Ham, Freddy Perez
OBJECTIVE: To present the findings of the Pan American Health Organization's 2014 survey on syphilis testing policies and practices in the Americas. METHODS: Representatives of national/regional reference and large, lower-level laboratories from 35 member states were invited to participate. A semi-structured, electronically administered questionnaire collected data on syphilis tests, algorithms, equipment/commodities, challenges faced and basic quality assurance (QA) strategies employed (i...
September 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28642342/survival-of-contagious-ovine-digital-dermatitis-codd-associated-treponemes-on-disposable-gloves-after-handling-codd-affected-feet
#20
J W Angell, S R Clegg, D H Grove-White, R W Blowey, S D Carter, J S Duncan, N J Evans
No abstract text is available yet for this article.
July 22, 2017: Veterinary Record
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