Evidence map›Paper›PMID 18235852›Full record

ArticlePLoS neglected tropical diseases2008

On the origin of the treponematoses: a phylogenetic approach.

Kristin N Harper, Paolo S Ocampo, Bret M Steiner, Robert W George, Michael S Silverman, Shelly Bolotin, Allan Pillay, Nigel J Saunders, George J Armelagos

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
13.5field-weighted citation impact, top 1% of its field
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

49 citing papers in PubMed, 217 citations in OpenAlex.

  1. Review
  2. Article
  3. [Origin of Syphilis in Europe: End of a Controversy?]Medecine tropicale et sante internationale · 2025
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  17. Review
  18. Sexually transmitted infections: old foes on the rise.Microbial cell (Graz, Austria) · 2016
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 3 countries.

Kristin N HarperDepartment of Population Biology, Ecology, and Evolution, Emory University, Atlanta, Georgia, United States of America.
Paolo S Ocampo
Bret M Steiner
Robert W George
Michael S Silverman
Shelly Bolotin
Allan Pillay
Nigel J Saunders
George J Armelagos
Emory University · USNational Center for HIV/AIDS Viral Hepatitis STD and TB Prevention · USCenters for Disease Control and Prevention · USLakeridge Health · CAMount Sinai Hospital · CAUniversity of Oxford · GB

Funding

Howard Hughes Medical InstituteIntramural CDC HHS CC999999
6 · The paper itself

Abstract

backgroundSince the first recorded epidemic of syphilis in 1495, controversy has surrounded the origins of the bacterium Treponema pallidum subsp. pallidum and its relationship to the pathogens responsible for the other treponemal diseases: yaws, endemic syphilis, and pinta. Some researchers have argued that the syphilis-causing bacterium, or its progenitor, was brought from the New World to Europe by Christopher Columbus and his men, while others maintain that the treponematoses, including syphilis, have a much longer history on the European continent. METHODOLOGY/PRINCIPAL

findingsWe applied phylogenetics to this problem, using data from 21 genetic regions examined in 26 geographically disparate strains of pathogenic Treponema. Of all the strains examined, the venereal syphilis-causing strains originated most recently and were more closely related to yaws-causing strains from South America than to other non-venereal strains. Old World yaws-causing strains occupied a basal position on the tree, indicating that they arose first in human history, and a simian strain of T. pallidum was found to be indistinguishable from them. CONCLUSIONS/SIGNIFICANCE: Our results lend support to the Columbian theory of syphilis's origin while suggesting that the non-sexually transmitted subspecies arose earlier in the Old World. This study represents the first attempt to address the problem of the origin of syphilis using molecular genetics, as well as the first source of information regarding the genetic make-up of non-venereal strains from the Western hemisphere.

Indexed as

PhylogenyAnimalsDNA, BacterialEuropeGenome, BacterialHumansMalePintaSequence Analysis, DNASouth AmericaSyphilisTreponemaTreponemal InfectionsTreponema pallidumYawsDNA, Bacterial

Identifiers

PMID18235852
PMCPMC2217670
OpenAlexW2075447938

What OpenQuestion holds

Textmetadata
LicenceCC0
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.