J 2020

No bejel among Surinamese, Antillean and Dutch syphilis diagnosed patients in Amsterdam between 2006-2018 evidenced by multi-locus sequence typing of Treponema pallidum isolates

ZONDAG, Helene C. A., Sylvia M. BRUISTEN, Eliška VRBOVÁ and David ŠMAJS

Basic information

Original name

No bejel among Surinamese, Antillean and Dutch syphilis diagnosed patients in Amsterdam between 2006-2018 evidenced by multi-locus sequence typing of Treponema pallidum isolates

Authors

ZONDAG, Helene C. A. (guarantor), Sylvia M. BRUISTEN, Eliška VRBOVÁ (203 Czech Republic, belonging to the institution) and David ŠMAJS (203 Czech Republic, belonging to the institution)

Edition

PLoS ONE, San Francisco, Public Library of Science, 2020, 1932-6203

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10606 Microbiology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.240

RIV identification code

RIV/00216224:14110/20:00117923

Organization unit

Faculty of Medicine

UT WoS

000535284700077

Keywords in English

Neurosyphilis; Secondary Syphilis; Treponema Pallidum

Tags

Tags

International impact, Reviewed
Změněno: 15/3/2021 10:06, Mgr. Tereza Miškechová

Abstract

V originále

Background Treponema pallidum subspecies pallidum (TPA) and subsp. endemicum (TEN) are the causative agents of syphilis and bejel, respectively. TEN shows similar clinical manifestations and is morphologically and serologically indistinguishable from TPA. Recently, bejel was found outside of its assumed endemic areas. Using molecular typing we aimed to discover bejel and characterize circulating TPA types among syphilis cases with Surinamese, Antillean and Dutch ethnicity in Amsterdam. Methods DNA was extracted from 137 ulcer swabs, which tested positive in the in-house diagnostic PCR targeting the polA gene. Samples were collected between 2006 and 2018 from Surinamese, Antillean and Dutch patients attending the Amsterdam STI clinic. Multilocus sequence typing was performed by partial sequence analysis of the tp0136, tp0548 and tp0705 genes. In addition, the 23S rRNA loci were analyzed for A2058G and A2059G macrolide resistance mutations. Results We found 17 distinct allelic profiles in 103/137 (75%) fully typed samples, which were all TPA and none TEN. Of the strains, 82.5% were SS14-like and 17.5% Nichols-like. The prevalence of Nichols-like strains found in this study is relatively high compared to nearby countries. The most prevalent types were 1.3.1 (42%) and 1.1.1 (19%), in concordance with similar TPA typing studies. The majority of the TPA types found were unique per country. New allelic types (7) and profiles (10) were found. The successfully sequenced 23S rRNA loci from 123/137 (90%) samples showed the presence of 79% A2058G and 2% A2059G mutations. Conclusions No TEN was found in the samples from different ethnicities residing in Amsterdam, the Netherlands, so no misdiagnoses occurred. Bejel has thus not (yet) spread as a sexually transmitted disease in the Netherlands. The strain diversity found in this study reflects the local male STI clinic population which is a diverse, mixed group.

Links

NV17-31333A, research and development project
Name: Vývoj nového typovacího systému pro původce syfilis, Treponema pallidum subsp. pallidum, zaměřeného na proteomické rozdíly