Evidence map›Paper›PMID 26892231›Full record

ArticleJournal of clinical laboratory analysis2016

Detection of Treponema pallidum Sp. Pallidum DNA in Cerebrospinal Fluid (CSF) by Two PCR Techniques.

Rita Castro, Maria João Águas, Teresa Batista, Carlos Araújo, Kamal Mansinho, Filomena da Luz Martins Pereira

Abstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Update on syphilis diagnostics.Current opinion in infectious diseases · 2025
    Review
  5. Review
  6. Canadian Public Health Laboratory Network (CPHLN) Diagnostic Recommendations for Neurosyphilis in Canada.Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada · 2024
    Article
  7. Article
  8. CDC Laboratory Recommendations for Syphilis Testing, United States, 2024.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Molecular and Direct Detection Tests for Treponema pallidum Subspecies pallidum: A Review of the Literature, 1964-2017.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2020
    Review
  16. Laboratory Diagnostic Tools for Syphilis: Current Status and Future Prospects.Frontiers in cellular and infection microbiology · 2020
    Review
  17. PCR detection for syphilis diagnosis: Status and prospects.Journal of clinical laboratory analysis · 2019
    Review
  18. Gene subtype analysis ofExperimental and therapeutic medicine · 2018
    Article
  19. Syphilis.Nature reviews. Disease primers · 2017
    Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Rita CastroInstituto de Higiene e Medicina Tropical, Unidade de Microbiologia Médica, Lisboa, Portugal. ritacastro@ihmt.unl.pt.
Maria João ÁguasServiço de Infecciologia, Hospital Garcia de Orta, Lisboa, Portugal.
Teresa BatistaServiço de Infecciologia e Medicina Tropical, Hospital de Egas Moniz (Centro Hospitalar de Lisboa Ocidental), Lisboa, Portugal.
Carlos AraújoServiço de Infecciologia e Medicina Tropical, Hospital de Egas Moniz (Centro Hospitalar de Lisboa Ocidental), Lisboa, Portugal.
Kamal MansinhoServiço de Infecciologia e Medicina Tropical, Hospital de Egas Moniz (Centro Hospitalar de Lisboa Ocidental), Lisboa, Portugal.
Filomena da Luz Martins PereiraInstituto de Higiene e Medicina Tropical, Unidade de Clínica Tropical, Lisboa, Portugal.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLaboratory diagnosis of neurosyphilis is complicated especially when it is asymptomatic, no single laboratory test result being appropriate to diagnose central nervous system infectivity caused by Treponema pallidum. Our objective was to evaluate two polymerase chain reaction (PCR) techniques for the detection of T. pallidum DNA in the cerebrospinal fluid (CSF) of patients with syphilis.

methodsOne hundred twenty-four CSF samples from patients with reactive blood tests for syphilis were obtained. Two PCR techniques (47-PCR, polA-PCR) were used to detect T. pallidum DNA. The laboratory criteria used for the diagnosis of neurosyphilis to which the PCR techniques were compared were those recommended by the IUSTI: 2008 European guidelines on the management of syphilis.

resultsTreponema pallidum DNA was detected amplified in 37 of 124 (29.8%) and 30 of 124 (24.2%) samples with the 47-PCR and polA-PCR, respectively. Sensitivities were 75.8% and 69.7% and specificities 86.8% and 92.3%, respectively, for 47-PCR and polA-PCR techniques, respectively. The three CSF samples of patients with primary syphilis did not fulfill the criteria of neurosyphilis and DNA was only detected in one by the 47-PCR. In samples from secondary syphilis and neurosyphilis, three of nine and nine of nine respectively, results were coincident for the two PCR techniques and neurosyphilis criteria. Major discrepancies between the two PCR techniques and neurosyphilis diagnostic criteria were observed in latent syphilis.

conclusionBeyond some limitations of the study, which are discussed here, both PCR techniques seem to be useful for the diagnosis of neurosyphilis, although 47-PCR presents a higher sensitivity and polA-PCR a higher specificity.

Indexed as

AdultDNA, ProtozoanHumansPolymerase Chain ReactionSensitivity and SpecificitySyphilisTreponema pallidumDNA, ProtozoanCNS infectionneurosyphilisT. pallidum

Identifiers

PMID26892231
PMCPMC6807054

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.