J 2024

Treponema pallidum subsp. pallidum strains DAL-1 and Philadelphia 1 differ in generation times in vitro as well as during experimental rabbit infection

BOSÁK, Juraj; Lenka MIKALOVÁ; Matěj HRALA; Petra POSPÍŠILOVÁ; Martin FALDYNA et. al.

Basic information

Original name

Treponema pallidum subsp. pallidum strains DAL-1 and Philadelphia 1 differ in generation times in vitro as well as during experimental rabbit infection

Authors

BOSÁK, Juraj; Lenka MIKALOVÁ; Matěj HRALA; Petra POSPÍŠILOVÁ; Martin FALDYNA and David ŠMAJS

Edition

PLoS ONE, San Francisco, Public Library of Science, 2024, 1932-6203

Other information

Language

English

Type of outcome

Article in a journal

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

Organization

Lékařská fakulta – Repository – Repository

UT WoS

001276406500058

EID Scopus

2-s2.0-85194196334

Keywords in English

Treponema pallidum subsp. pallidum

Links

GA23-07021S, research and development project. LX22NPO5103, research and development project.
Changed: 20/3/2025 00:51, RNDr. Daniel Jakubík

Abstract

V originále

lt; 0.01). To minimize the confounding conditions during rabbit experiments, the growth characteristics of DAL-1 and Philadelphia 1 strains were determined during TPA co-infection of rabbit testes (n = 20, including controls). During two weeks of intratesticular co-infection, DAL-1 overgrew Philadelphia 1 in all twelve testes, regardless of inoculation ratio and dose (median of relative excess DAL-1 multiplication = 84.85×). Moreover, higher DAL-1 to Philadelphia 1 inoculum ratios appeared to increase differences in growth rates, suggesting direct competition between strains for available nutrients during co-infection. These experiments indicate important physiological differences between the two TPA strains and suggest growth differences between Nichols-like and SS14-like strains that are potentially linked to their virulence and pathogenicity.

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