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Related Concept Videos

Microbiota of the Urogenital Tract01:28

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The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

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Related Experiment Video

Updated: May 7, 2026

Multi-locus Variable-number Tandem-repeat Analysis of the Fish-pathogenic Bacterium Yersinia ruckeri by Multiplex PCR and Capillary Electrophoresis
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Development of a multilocus sequence typing scheme for Ureaplasma.

J Zhang1, Y Kong, Y Feng

  • 1Clinical Laboratory, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310016, China.

European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology
|September 28, 2013
PubMed
Summary

A new multilocus sequence typing (MLST) scheme effectively differentiates Ureaplasma strains, revealing distinct population structures and linking specific lineages to Ureaplasma parvum and Ureaplasma urealyticum infections.

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Area of Science:

  • Microbiology
  • Molecular Epidemiology
  • Genetics

Background:

  • Ureaplasma is a common human urogenital commensal.
  • It is linked to various invasive diseases, including non-gonococcal urethritis, infertility, and adverse pregnancy outcomes.
  • Understanding Ureaplasma's molecular epidemiology is crucial for disease control.

Purpose of the Study:

  • To develop and validate a multilocus sequence typing (MLST) scheme for Ureaplasma.
  • To analyze the molecular epidemiology and population structure of Ureaplasma clinical isolates.
  • To correlate genetic lineages with Ureaplasma species and clinical manifestations.

Main Methods:

  • Developed an MLST scheme using four housekeeping genes (ftsH, rpL22, valS, thrS).
  • Validated the scheme on 283 Ureaplasma isolates, including reference strains and clinical samples.
  • Employed eBURST analysis and neighbor-joining tree construction for population structure analysis.

Main Results:

  • Identified 99 unique sequence types (STs), with ST1 and ST22 being predominant.
  • Revealed two major clonal lineages (CC1 and CC2), corresponding to Ureaplasma parvum (UPA) and Ureaplasma urealyticum (UUR) respectively.
  • CC2 (UUR) was more frequently associated with symptomatic vaginitis, tubal obstruction, and cervicitis.

Conclusions:

  • The developed MLST scheme provides high discriminatory power for Ureaplasma molecular epidemiology.
  • The study elucidated distinct population structures and species-specific clonal lineages.
  • Findings highlight the potential of MLST for understanding Ureaplasma-associated diseases.